2.5.0

update dependencies
use new title popover

.github/workflows/build.yml

@@ -1,6 +1,12 @@
 name: Build
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - v*
+  pull_request:
 
 jobs:
   build:
@@ -8,9 +14,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 🚚 Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: 🐍 Use Python 3.x
-        uses: actions/setup-python@v3.1.4
+        uses: actions/setup-python@v5
         with:
           python-version: 3.x
           cache: pip
@@ -20,11 +26,11 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: 9
+          version: 10
-      - name: 🐉 Use Node.js 22.4.x
+      - name: 🐉 Use Node.js 22.14.x
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
-          node-version: 22.4.x
+          node-version: 22.14.x
           cache: "pnpm"
       - name: ⏬ Install Node dependencies
         run: pnpm install
@@ -41,10 +47,11 @@ jobs:
           echo "${{ secrets.DEPLOY_KNOWN_HOSTS }}" > ~/.ssh/known_hosts
 
       - name: Publish Stable
-        if: ${{ github.ref == 'refs/tags/v*' }}
+        if: ${{ github.ref == 'refs/tags/v*' && !github.event.pull_request.head.repo.fork }}
         run: rsync -rav --mkpath --delete build/ deploy@charachorder.io:/home/deploy/www/
 
       - name: Publish Branch
+        if: ${{ !github.event.pull_request.head.repo.fork }}
         run: rsync -rav --mkpath --delete build/ deploy@charachorder.io:/home/deploy/ref/${GITHUB_REF##*/}
       - name: Publish Commit
         run: rsync -rav --mkpath --delete build/ deploy@charachorder.io:/home/deploy/ref/${{ github.sha }}

.prettierignore

@@ -7,6 +7,8 @@ node_modules
 .env.*
 !.env.example
 /src-tauri/target
+/openssl*
+/src/i18n/i18n*
 
 # Ignore files for PNPM, NPM and YARN
 pnpm-lock.yaml

.prettierrc

@@ -1,4 +1,4 @@
 {
-  "plugins": ["prettier-plugin-svelte"],
+  "plugins": ["prettier-plugin-svelte", "prettier-plugin-css-order"],
   "overrides": [{ "files": "*.svelte", "options": { "parser": "svelte" } }]
 }

.stylelintrc.json

@@ -3,7 +3,6 @@
     "stylelint-config-standard-scss",
     "stylelint-config-recommended-scss",
     "stylelint-config-html/svelte",
-    "stylelint-config-clean-order",
     "stylelint-config-prettier-scss"
   ],
   "rules": {

CONTRIBUTING.md

@@ -35,3 +35,9 @@ way to subset variable woff2 fonts with ligatures.
 
 In other words, either have python as a development dependency or
 serve a 3.5MB icons font of which 99.5% is completely unused.
+
+To generate the icons use the following command:
+
+```shell
+npm run minify-icons
+```

flake.lock

@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1710146030,
+        "lastModified": 1731533236,
-        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1722415718,
+        "lastModified": 1743259260,
-        "narHash": "sha256-5US0/pgxbMksF92k1+eOa8arJTJiPvsdZj9Dl+vJkM4=",
+        "narHash": "sha256-ArWLUgRm1tKHiqlhnymyVqi5kLNCK5ghvm06mfCl4QY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "c3392ad349a5227f4a3464dce87bcc5046692fce",
+        "rev": "eb0e0f21f15c559d2ac7633dc81d079d1caf5f5f",
         "type": "github"
       },
       "original": {
@@ -36,11 +36,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1718428119,
+        "lastModified": 1736320768,
-        "narHash": "sha256-WdWDpNaq6u1IPtxtYHHWpl5BmabtpmLnMAx0RdJ/vo8=",
+        "narHash": "sha256-nIYdTAiKIGnFNugbomgBJR+Xv5F1ZQU+HfaBqJKroC0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e6cea36f83499eb4e9cd184c8a8e823296b50ad5",
+        "rev": "4bc9c909d9ac828a039f288cf872d16d38185db8",
         "type": "github"
       },
       "original": {
@@ -62,11 +62,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1722391647,
+        "lastModified": 1743388531,
-        "narHash": "sha256-JTi7l1oxnatF1uX/gnGMlRnyFMtylRw4MqhCUdoN2K4=",
+        "narHash": "sha256-OBcNE+2/TD1AMgq8HKMotSQF8ZPJEFGZdRoBJ7t/HIc=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "0fd4a5d2098faa516a9b83022aec7db766cd1de8",
+        "rev": "011de3c895927300651d9c2cb8e062adf17aa665",
         "type": "github"
       },
       "original": {

flake.nix

@@ -14,7 +14,13 @@
     flake-utils.lib.eachDefaultSystem (
       system:
       let
-        overlays = [ (import rust-overlay) ];
+        overlays = [
+          (import rust-overlay)
+          (final: prev: {
+            nodejs = prev.nodejs_22;
+            corepack = prev.corepack_22;
+          })
+        ];
         pkgs = import nixpkgs { inherit system overlays; };
         rust-bin = pkgs.rust-bin.stable.latest.default.override {
           extensions = [
@@ -46,8 +52,8 @@
         ];
         packages =
           (with pkgs; [
-            nodejs_22
+            nodejs
-            nodePackages.pnpm
+            pnpm
             rust-bin
             fontMin
           ])
@@ -59,7 +65,7 @@
             openssl_3
             glib
             gtk3
-            libsoup
+            libsoup_2_4
             webkitgtk
             librsvg
             # serial plugin
@@ -70,7 +76,7 @@
         devShell = pkgs.mkShell {
           buildInputs = packages;
           shellHook = ''
-            export LD_LIBRARY_PATH=${pkgs.lib.makeLibraryPath libraries}:$LD_LIBRARY_PATH
+            #export LD_LIBRARY_PATH=${pkgs.lib.makeLibraryPath libraries}:$LD_LIBRARY_PATH
           '';
         };
       }

icons.config.js

@@ -4,6 +4,7 @@ const config = {
     "node_modules/@fontsource-variable/material-symbols-rounded/files/material-symbols-rounded-latin-full-normal.woff2",
   outputPath: "src/lib/assets/icons.min.woff2",
   icons: [
+    "rocket_launch",
     "deployed_code_update",
     "adjust",
     "add",
@@ -42,7 +43,23 @@ const config = {
     "arrow_back",
     "arrow_back_ios_new",
     "save",
+    "step_over",
+    "step_into",
+    "step_out",
     "settings_backup_restore",
+    "sound_detection_loud_sound",
+    "ring_volume",
+    "wifi",
+    "power_settings_circle",
+    "graphic_eq",
+    "mail",
+    "calculate",
+    "open_in_browser",
+    "chevron_backward",
+    "chevron_forward",
+    "bookmark",
+    "drag_pan",
+    "markdown_copy",
     "sort",
     "shopping_bag",
     "filter_list",
@@ -66,16 +83,24 @@ const config = {
     "delete",
     "remove_selection",
     "bolt",
+    "thunderstorm",
+    "join_inner",
+    "uppercase",
     "undo",
     "redo",
     "replay",
     "reply",
     "navigate_before",
     "navigate_next",
+    "library_add",
+    "reset_wrench",
+    "reset_settings",
+    "delete_sweep",
     "print",
     "restore_from_trash",
     "history",
     "history_toggle_off",
+    "text_to_speech",
     "sentiment_satisfied",
     "sentiment_dissatisfied",
     "sentiment_very_satisfied",
@@ -89,6 +114,7 @@ const config = {
     "sentiment_sad",
     "sentiment_content",
     "sentiment_worried",
+    "construction",
     "timer",
     "target",
     "download",

package.json

@@ -1,11 +1,11 @@
 {
   "name": "charachorder-device-manager",
-  "version": "2.2.3",
+  "version": "2.5.0",
   "license": "AGPL-3.0-or-later",
   "private": true,
   "engines": {
-    "node": ">=22.4",
+    "node": ">=22.14",
-    "pnpm": ">=9.4"
+    "pnpm": ">=10.7"
   },
   "repository": {
     "type": "git",
@@ -34,62 +34,64 @@
     "typesafe-i18n": "typesafe-i18n"
   },
   "devDependencies": {
-    "@codemirror/autocomplete": "^6.18.2",
+    "@codemirror/autocomplete": "^6.18.6",
-    "@codemirror/commands": "^6.7.1",
+    "@codemirror/commands": "^6.8.1",
-    "@codemirror/lang-javascript": "^6.2.2",
+    "@codemirror/lang-javascript": "^6.2.4",
-    "@codemirror/language": "^6.10.3",
+    "@codemirror/language": "^6.11.2",
-    "@codemirror/state": "^6.4.1",
+    "@codemirror/state": "^6.5.2",
-    "@codemirror/view": "^6.34.1",
+    "@codemirror/view": "^6.38.1",
-    "@fontsource-variable/material-symbols-rounded": "^5.1.3",
+    "@fontsource-variable/material-symbols-rounded": "^5.2.17",
-    "@fontsource-variable/noto-sans-mono": "^5.1.0",
+    "@fontsource-variable/noto-sans-mono": "^5.2.7",
     "@lezer/highlight": "^1.2.1",
     "@material/material-color-utilities": "^0.3.0",
     "@melt-ui/pp": "^0.3.2",
-    "@melt-ui/svelte": "^0.86.0",
+    "@melt-ui/svelte": "^0.86.6",
-    "@modyfi/vite-plugin-yaml": "^1.1.0",
+    "@modyfi/vite-plugin-yaml": "^1.1.1",
-    "@sveltejs/adapter-static": "^3.0.6",
+    "@sveltejs/adapter-static": "^3.0.8",
-    "@sveltejs/kit": "^2.7.5",
+    "@sveltejs/kit": "^2.26.1",
-    "@sveltejs/vite-plugin-svelte": "^4.0.0",
+    "@sveltejs/vite-plugin-svelte": "^6.1.0",
     "@tauri-apps/api": "^1.6.0",
     "@tauri-apps/cli": "^1.6.0",
-    "@types/dom-view-transitions": "^1.0.5",
+    "@types/dom-view-transitions": "^1.0.6",
-    "@types/flexsearch": "^0.7.6",
+    "@types/semver": "^7.7.0",
-    "@types/w3c-web-serial": "^1.0.7",
+    "@types/w3c-web-serial": "^1.0.8",
     "@types/w3c-web-usb": "^1.0.10",
-    "@types/wicg-file-system-access": "^2023.10.5",
+    "@types/wicg-file-system-access": "^2023.10.6",
-    "@vite-pwa/sveltekit": "^0.6.6",
+    "@vite-pwa/sveltekit": "^1.0.0",
-    "autoprefixer": "^10.4.20",
+    "autoprefixer": "^10.4.21",
-    "codemirror": "^6.0.1",
+    "codemirror": "^6.0.2",
-    "cypress": "^13.13.2",
+    "cypress": "^14.5.3",
     "d3": "^7.9.0",
-    "esptool-js": "^0.4.7",
+    "esptool-js": "^0.5.6",
-    "flexsearch": "^0.7.43",
+    "flexsearch": "^0.8.205",
     "fontkit": "^2.0.4",
-    "glob": "^11.0.0",
+    "glob": "^11.0.3",
-    "jsdom": "^25.0.1",
+    "jsdom": "^26.1.0",
-    "matrix-js-sdk": "^34.9.0",
+    "matrix-js-sdk": "^37.12.0",
     "npm-run-all": "^4.1.5",
-    "prettier": "^3.3.3",
+    "prettier": "^3.6.2",
-    "prettier-plugin-svelte": "^3.2.7",
+    "prettier-plugin-css-order": "^2.1.2",
-    "rxjs": "^7.8.1",
+    "prettier-plugin-svelte": "^3.4.0",
-    "sass": "^1.80.6",
+    "rxjs": "^7.8.2",
+    "sass": "^1.89.2",
+    "semver": "^7.7.2",
     "socket.io-client": "^4.8.1",
-    "stylelint": "^16.10.0",
+    "stylelint": "^16.23.0",
-    "stylelint-config-clean-order": "^6.1.0",
+    "stylelint-config-clean-order": "^7.0.0",
     "stylelint-config-html": "^1.1.0",
     "stylelint-config-prettier-scss": "^1.0.0",
-    "stylelint-config-recommended-scss": "^14.1.0",
+    "stylelint-config-recommended-scss": "^15.0.1",
-    "stylelint-config-standard-scss": "^13.1.0",
+    "stylelint-config-standard-scss": "^15.0.1",
-    "svelte": "5.1.9",
+    "svelte": "5.37.1",
-    "svelte-check": "^4.0.5",
+    "svelte-check": "^4.3.0",
     "svelte-preprocess": "^6.0.3",
     "tippy.js": "^6.3.7",
     "typesafe-i18n": "^5.26.2",
-    "typescript": "^5.6.3",
+    "typescript": "^5.8.3",
-    "vite": "^5.4.10",
+    "vite": "^7.0.6",
-    "vite-plugin-mkcert": "^1.17.6",
+    "vite-plugin-mkcert": "^1.17.8",
-    "vite-plugin-pwa": "^0.20.5",
+    "vite-plugin-pwa": "^1.0.2",
-    "vitest": "^2.1.4",
+    "vitest": "^3.2.4",
     "web-serial-polyfill": "^1.0.15",
     "workbox-window": "^7.3.0"
   },

src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "app"
-version = "2.2.3"
+version = "2.5.0"
 description = "A Tauri App"
 authors = ["Thea Schöbl <dev@theaninova.de>"]
 license = "AGPL-3"

src-tauri/tauri.conf.json

@@ -6,7 +6,7 @@
     "devPath": "http://localhost:5173",
     "distDir": "../build"
   },
-  "package": { "productName": "amacc1ng", "version": "2.2.3" },
+  "package": { "productName": "amacc1ng", "version": "2.5.0" },
   "tauri": {
     "allowlist": { "all": false },
     "bundle": {

src/i18n/de/index.ts

@@ -18,10 +18,10 @@ const de = {
   },
   backup: {
     TITLE: "Backup",
-    AUTO_BACKUP: "Auto-backup",
+    AUTO_BACKUP: "Beschleunigtes Verbinden",
     DISCLAIMER:
-      "Das Backup in diesem Browser gespeichert und bleibt nur auf diesem Computer.",
+      "<b>Nicht auf öffentlichen oder geteilten Computern einschalten.</b> Gerätedaten werden für schnelleren Zugriff lokal zwischengespeichert.",
-    DOWNLOAD: "Alles",
+    DOWNLOAD: "Komplettes Profil",
     RESTORE: "Wiederherstellen",
   },
   modal: {

src/i18n/en/index.ts

@@ -14,10 +14,10 @@ const en = {
   },
   backup: {
     TITLE: "Backup",
-    AUTO_BACKUP: "Auto-backup",
+    AUTO_BACKUP: "Fast Connect",
     DISCLAIMER:
-      "Whenever you connect this device to browser, a backup is made locally and kept only on your computer.",
+      "<b>Turn off if using a shared or public computer.</b> Caches your device's data locally for quick access next time you connect.",
-    DOWNLOAD: "Everything",
+    DOWNLOAD: "Full profile",
     RESTORE: "Restore",
   },
   sync: {

src/lib/PageTransition.svelte

@@ -4,7 +4,7 @@
   import { expoIn, expoOut } from "svelte/easing";
   import type { Snippet } from "svelte";
 
-  let { children, routeOrder }: { children: Snippet; routeOrder: string[]; direction: } =
+  let { children, routeOrder }: { children: Snippet; routeOrder: string[] } =
     $props();
 
   let inDirection = $state(0);

src/lib/assets/CC1_Default_Chord_Library.csv

@@ -1,497 +0,0 @@
-s + Dup,say
-y + b,by
-y + Dup,why
-n + Dup,no
-n + f,find
-l + f,life
-l + p,people
-l + s + p,spell
-l + n,line
-l + n + p,plant
-t + h,that
-t + n + h,than
-t + n + p,plant
-t + l + f,left
-a + f,after
-a + d,add
-a + d + f,had
-a + h,has
-a + s,as
-a + s + h,has
-a + y + d,day
-a + y + s,say
-a + n,an
-a + n + d,and
-a + n + d + f,hand
-a + n + h,hand
-a + n + y,any
-a + l,all
-a + l + d,land
-a + l + p,plant
-a + l + s,last
-a + l + y + p,play
-a + l + n + d,land
-a + t,at
-a + t + h,that
-a + t + n + h,than
-a + t + l + s,last
-a + t + l + n + p,plant
-- + ?,question
-w + h,who
-w + s,saw
-w + y + h,why
-w + t,without
-w + t + h,watch
-w + t + n,went
-w + a,was
-w + a + h,what
-w + a + s,saw
-w + a + y,way
-w + a + y + Dup,away
-w + a + n,want
-w + a + l + f,walk
-w + a + l + y,always
-w + a + l + y + s,always
-w + a + t,watch
-w + a + t + h,watch
-w + a + t + n,want
-g + b,begin
-g + Dup,question
-g + h,here
-g + p,page
-g + l + n,long
-g + t,get
-k + q,quick
-k + f,and
-k + l + y + q,quickly
-k + t + l,talk
-k + a + b,back
-k + a + s,ask
-k + a + t + l,talk
-k + w + a + l,walk
-m + f,form
-m + y,my
-m + t + Dup,mountain
-m + a + f,family
-m + a + s,small
-m + a + y,may
-m + a + n,man
-m + a + n + y,many
-m + a + l,almost
-m + a + l + s,small
-m + a + l + s + Dup,small
-c + b,because
-c + Dup,sea
-c + h,head
-c + a + n,can
-c + a + n + h,change
-c + a + l,call
-c + a + l + p,place
-c + k + a + b,back
-u + p,us
-u + y,you
-u + j,just
-u + j + s,just
-u + t + b,but
-u + t + p,put
-u + t + s + d,study
-u + t + n,until
-u + t + j + s,just
-u + a + l,last
-u + k + q,quick
-u + k + l + y + q,quickly
-u + m + h,much
-u + m + n,number
-u + m + t + s,must
-u + m + c + h,much
-u + c + s + h,such
-u + c + t,cut
-u + c + t + n,country
-' + a + s,say
-' + a + n,any
-' + m + a + n,many
-o + Dup,off
-o + f,of
-o + f + f,food
-o + d,do
-o + s,so
-o + y + b,boy
-o + n,on
-o + n + s + Dup,soon
-o + l,line
-o + l + Dup,oil
-o + l + d,old
-o + l + y,only
-o + l + n + y,only
-o + t,to
-o + t + b,both
-o + t + Dup,too
-o + t + s,stop
-o + t + s + p,stop
-o + t + n,not
-o + t + n + f,often
-o + t + n + d,don't
-o + t + n + p,point
-o + a + n + h,another
-o + a + l,also
-o + a + l + s,also
-o + w,own
-o + w + h,how
-o + w + s + h,show
-o + w + n,now
-o + w + n + d,down
-o + w + l + f,follow
-o + w + t,two
-o + g,go
-o + g + Dup,good
-o + g + n + s,song
-o + g + l + n,long
-o + g + t,got
-o + g + a + l,along
-o + g + a + l + n,along
-o + k + b,book
-o + k + n,know
-o + k + l,look
-o + k + t,took
-o + k + t + Dup,took
-o + k + w + n,know
-o + v + a + b,above
-o + v + k,move
-o + m + s,some
-o + m + t + s,most
-o + m + a + l,almost
-o + m + a + l + s,almost
-o + m + a + t + l + s,almost
-o + c + f,food
-o + c + l + s + h,school
-o + u,our
-o + u + f,four
-o + u + s + h,should
-o + u + y,you
-o + u + n + f,found
-o + u + n + f + f,found
-o + u + n + s,sound
-o + u + n + s + d,sound
-o + u + l + s + d + f,should
-o + u + l + s + h,should
-o + u + t,out
-o + u + a + b,about
-o + u + a + t + b,about
-o + u + w + l + d,would
-o + u + g + n + y,young
-o + u + g + t + h,thought
-o + u + m + t + n,mountain
-o + u + m + t + n + Dup,mountain
-o + u + c + l + d,could
-o + ' + t + n + d,don't
-o + o + l,oil
-o + o + t + n,into
-o + o + t + n + p,point
-o + o + u + w + t + h,without
-o + o + u + m + a + t + n,mountain
-i + f,if
-i + f + f,different
-i + d,did
-i + RH_Thumb_1_Center,different
-i + s,is
-i + s + d,side
-i + s + h,his
-i + n,in
-i + n + f + f,find
-i + l,list
-i + l + n,line
-i + t,it
-i + t + s + Dup,still
-i + t + s + h,this
-i + t + n,into
-i + t + l + s,list
-i + t + l + s + Dup,still
-i + a + s,said
-i + a + s + d,said
-i + a + n,animal
-i + w + h,which
-i + w + h + Dup,which
-i + w + l,will
-i + w + l + Dup,will
-i + w + l + h,while
-i + w + t + h,with
-i + g,give
-i + g + b,big
-i + g + h,high
-i + g + n + h,night
-i + g + l + h,light
-i + g + t + n + h,thing
-i + g + t + l + h,light
-i + g + a + n,again
-i + g + a + n + Dup,again
-i + k + n + d,kind
-i + k + l,like
-i + k + t + n + h,think
-i + v + l,live
-i + m + h,him
-i + m + p,important
-i + m + s,miss
-i + m + s + Dup,miss
-i + m + l,mile
-i + m + t,time
-i + m + t + h,might
-i + m + a + n,animal
-i + m + a + n + Dup,animal
-i + m + a + l + n,another
-i + m + g + t + h,might
-i + c + p,picture
-i + c + t + y,city
-i + u + t + l + n,until
-i + u + w + t + h,without
-i + u + k + q,quick
-i + u + k + l + y + q,quickly
-i + u + c + k + q,quick
-i + u + c + k + l + y + q,quickly
-i + ' + t,it's
-i + ' + t + s,it's
-e + b,be
-e + Dup,earth
-e + x,example
-e + f + b,before
-e + h,he
-e + h + Dup,here
-e + s,state
-e + s + Dup,see
-e + s + h,she
-e + y + Dup,eye
-e + n,name
-e + n + b,been
-e + n + Dup,need
-e + n + d,end
-e + l + h,help
-e + l + h + f,help
-e + l + s + p,spell
-e + t,the
-e + t + Dup,eat
-e + t + f,feet
-e + t + h,there
-e + t + s,set
-e + t + s + h,these
-e + t + y + h,they
-e + t + n + x,next
-e + t + n + h,then
-e + t + l,let
-e + t + l + Dup,tell
-e + t + l + f,left
-e + a,at
-e + a + f,father
-e + a + d + f,head
-e + a + h,hear
-e + a + p,paper
-e + a + s,sea
-e + a + y,year
-e + a + n,name
-e + a + t,eat
-e + a + t + s + Dup,state
-e + w,we
-e + w + f,few
-e + w + n,new
-e + w + n + h,when
-e + w + l,well
-e + w + l + Dup,well
-e + w + t + b,between
-e + w + t + n,went
-e + w + t + n + b,between
-e + g + h,here
-e + g + t,get
-e + g + a + p,page
-e + g + a + n + b,began
-e + k,keep
-e + k + p,keep
-e + k + t,take
-e + k + a + t,take
-e + v + y,every
-e + v + n,even
-e + v + a + h,have
-e + v + a + l,leave
-e + v + a + l + Dup,leave
-e + m,me
-e + m + s,seem
-e + m + s + Dup,seem
-e + m + n,men
-e + m + t + h,them
-e + m + a,make
-e + m + a + d,made
-e + m + a + s,same
-e + m + a + n,mean
-e + m + a + l + p + x,example
-e + m + c + a,came
-e + c + s,second
-e + c + t + n + s,sentence
-e + c + a,came
-e + c + a + f,face
-e + c + a + h,each
-e + c + a + l + p,place
-e + LH_Thumb_1_Center + a,make
-e + u + s,use
-e + u + s + q,question
-e + u + n + d,under
-e + u + t + q,quite
-e + u + c + a + s + b,because
-e + o + p,open
-e + o + s + d,does
-e + o + n,one
-e + o + n + p,open
-e + o + l + b,below
-e + o + l + h,hello
-e + o + l + h + Dup,hello
-e + o + l + p,people
-e + o + t + f,often
-e + o + t + h,other
-e + o + t + s + h,those
-e + o + t + n + f,often
-e + o + w + l + b,below
-e + o + g + t + h,together
-e + o + v,over
-e + o + v + a + b,above
-e + o + v + k,move
-e + o + m,move
-e + o + m + h,home
-e + o + m + s,some
-e + o + m + t + s,sometime
-e + o + m + t + s + h,something
-e + o + m + g + t + n + s + h,something
-e + o + m + c,come
-e + o + c,come
-e + o + c + n,once
-e + o + c + n + s + d,second
-e + o + c + l + s,close
-e + o + u + s + h,house
-e + o + u + n,enough
-e + o + u + g + n + h,enough
-e + i + s + d,side
-e + i + l + f,life
-e + i + l + n,line
-e + i + t + q,quite
-e + i + t + l,little
-e + i + t + l + Dup,little
-e + i + a + d,idea
-e + i + w + l + h,while
-e + i + w + t + h,white
-e + i + g,give
-e + i + g + p,give
-e + i + g + n + b,begin
-e + i + k + l,like
-e + i + v + l,live
-e + i + m + l,mile
-e + i + m + t,time
-e + i + u + t + q,quite
-e + i + u + u + t + n + s + q,question
-r + e + h,her
-r + e + t + Dup,tree
-r + e + t + h,there
-r + e + t + h + Dup,three
-r + e + t + l,letter
-r + e + a,are
-r + e + a + d,read
-r + e + a + h,hear
-r + e + a + p,paper
-r + e + a + n,near
-r + e + a + l + y,really
-r + e + a + l + y + Dup,really
-r + e + a + t + f,after
-r + e + a + t + h,earth
-r + e + a + t + RH_Thumb_1_Center,father
-r + e + a + t + l,learn
-r + e + w,were
-r + e + w + Dup,were
-r + e + w + h,where
-r + e + w + a + n + s,answer
-r + e + w + a + t,water
-r + e + g + h,here
-r + e + g + a + l,large
-r + e + g + a + t,great
-r + e + v + y,very
-r + e + v + y + Dup,every
-r + e + v + n,never
-r + e + u + n + d,under
-r + e + u + m + n + b,number
-r + e + o + f + b,before
-r + e + o + t + h,other
-r + e + o + g + t + h,together
-r + e + o + v,over
-r + e + o + m,more
-r + e + o + m + t + h,mother
-r + e + i + t + h,their
-r + e + i + t + n + f + f,different
-r + e + i + v,river
-r + e + i + c + l + d + f,children
-r + e + i + u + c + t + p,picture
-r + f,for
-r + h,her
-r + y,your
-r + n,near
-r + l,learn
-r + t + Dup,tree
-r + t + f,father
-r + t + s + Dup,start
-r + t + y,try
-r + t + l,letter
-r + t + l + Dup,letter
-r + a,are
-r + a + f,far
-r + a + d,read
-r + a + d + f,hard
-r + a + h,hard
-r + a + p,part
-r + a + l + y,really
-r + a + l + y + Dup,really
-r + a + t + p,part
-r + a + t + s + Dup,start
-r + w,were
-r + w + h,where
-r + w + t,water
-r + w + a + n + s,answer
-r + g + t,great
-r + g + a + l,large
-r + v + y,very
-r + v + n,never
-r + v + l,later
-r + m + f,form
-r + c + a,car
-r + c + a + y,carry
-r + c + a + y + Dup,carry
-r + u + n,run
-r + u + t + h,through
-r + u + t + n,turn
-r + ' + t + s,story
-r + o,or
-r + o + f,for
-r + o + t + y + s,story
-r + o + a + n + h,another
-r + o + w,work
-r + o + w + d,word
-r + o + w + l + d,world
-r + o + g,grow
-r + o + LeftDoubleClick,grow
-r + o + k + w,work
-r + o + m,more
-r + o + m + f,from
-r + o + m + t + h,mother
-r + o + u,our
-r + o + u + f,four
-r + o + u + y,your
-r + o + u + a,around
-r + o + u + a + n,around
-r + o + u + a + n + d,around
-r + o + u + g,group
-r + o + u + g + p,group
-r + o + u + g + t + h,through
-r + o + u + c + t + n,country
-r + o + u + c + t + n + y,country
-r + i + t + h,their
-r + i + t + s + f,first
-r + i + a,air
-r + i + w + t,write
-r + i + g + h,right
-r + i + g + l,girl
-r + i + g + t + h,right
-r + i + v,river
-r + i + v + Dup,river
-r + i + m + t + n + p,important
-r + i + c + l + h,children

src/lib/assets/keymaps/keymap.d.ts

@@ -16,4 +16,7 @@ export interface ActionInfo {
   variant: "left" | "right";
   variantOf: number;
   keyCode: string;
+  printable?: boolean;
+  separator?: boolean;
+  breaking?: boolean;
 }

src/lib/assets/layouts/t4g.yml

@@ -0,0 +1,10 @@
+name: T4G
+col:
+  - row:
+      - switch: { e: 3, n: 5, w: 4, s: 6 }
+  - offset: [0.5, 0]
+    row:
+      - key: 2
+  - row:
+      - key: 0
+      - key: 1

src/lib/assets/settings.yml

@@ -1,118 +1,154 @@
-settings:
+- name: spurring
-  0x1:
+  description: |
-    title: Enable Serial Header
+    "Chording only" mode which tells your device to output chords on a press
-    description: boolean 0 or 1, default is 0
+    rather than a press & release. It also enables you to jump from one
-  0x2:
+    chord to another without releasing everything and can be activated in
-    title: Enable Serial Logging
+    GTM or by chording both mirror keys. It can provide significant speed
-    description: boolean 0 or 1, default is 0
+    gains with chording, but also takes away the flexibility of character
-  0x3:
+    entry.
-    title: Enable Serial Debugging
+  items:
-    description: boolean 0 or 1, default is 0
+    - id: 0x41
-  0x4:
+      name: enable
-    title: Enable Serial Raw
+      range: [0, 1]
-    description: boolean 0 or 1, default is 0
+    - id: 0x43
-  0x5:
+      name: character counter timeout
-    title: Enable Serial Chord
+      range: [0, 240000]
-    description: boolean 0 or 1, default is 0
+      step: 1000
-  0x6:
+      scale: 0.001
-    title: Enable Serial Keyboard
+      unit: s
-    description: boolean 0 or 1, default is 0
+- name: arpeggiates
-  0x7:
+  description: |
-    title: Enable Serial Mouse
+    Allows chord modifiers to be hit after instead of with a chord,
-    description: boolean 0 or 1, default is 0
+    and enables select keys to be placed before auto-spaces.
-  0x11:
+  items:
-    title: Enable USB HID Keyboard
+    - id: 0x51
-    description: boolean 0 or 1, default is 1
+      name: enable
-  0x12:
+      range: [0, 1]
-    title: Enable Character Entry
+    - id: 0x54
-    description: boolean 0 or 1
+      name: timeout
-  0x13:
+      range: [0, 2550]
-    title: GUI-CTRL Swap Mode
+      step: 10
-    description: boolean 0 or 1; 1 swaps keymap 0 and 1. (CCL only)
+      unit: ms
-  0x14:
+- name: keyboard
-    title: Key Scan Duration
+  items:
-    description: scan rate described in milliseconds; default is 2ms = 500Hz
+    - id: 0x11
-  0x15:
+      name: enable
-    title: Key Debounce Press Duration
+      range: [0, 1]
-    description: debounce time in milliseconds; default is 7ms on the One and 20ms on the Lite
+    - id: 0x12
-  0x16:
+      name: character entry
-    title: Key Debounce Release Duration
+      range: [0, 1]
-    description: debounce time in milliseconds; default is 7ms on the One and 20ms on the Lite
+    - id: 0x13
-  0x17:
+      name: command option swap
-    title: Keyboard Output Character Microsecond Delays
+      range: [0, 1]
-    description: delay time in microseconds (one delay for press and again for release); default is 480us; max is 10240us; increments of 40us
+      description: |
-  0x21:
+        Swaps ⌥ and ⌘ to make transitioning between Mac and other systems easier.
-    title: Enable USB HID Mouse
+    - id: 0x14
-    description: boolean 0 or 1; default is 1
+      name: poll rate
-  0x22:
+      range: [0, 255]
-    title: Slow Mouse Speed
+      unit: Hz
-    description: pixels to move at the mouse poll rate; default for CC1 is 5 = 250px/s
+      inverse: 1000
-  0x23:
+    - id: 0x15
-    title: Fast Mouse Speed
+      name: debounce press
-    description: pixels to move at the mouse poll rate; default for CC1 is 25 = 1250px/s
+      range: [0, 255]
-  0x24:
+      unit: ms
-    title: Enable Active Mouse
+    - id: 0x16
-    description: boolean 0 or 1; moves mouse back and forth every 60s
+      name: debounce release
-  0x25:
+      range: [0, 255]
-    title: Mouse Scroll Speed
+      unit: ms
-    description: default is 1; polls at 1/4th the rate of the mouse move updates
+    - id: 0x17
-  0x26:
+      name: output delay
-    title: Mouse Poll Duration
+      range: [0, 10200]
-    description: poll rate described in milliseconds; default is 20ms = 50Hz
+      step: 40
-  0x31:
+      unit: µs
-    title: Enable Chording
+- name: mouse
-    description: boolean 0 or 1
+  items:
-  0x32:
+    - id: 0x21
-    title: Enable Chording Character Counter Timeout
+      name: enable
-    description: boolean 0 or 1; default is 1
+      range: [0, 1]
-  0x33:
+    - id: 0x22
-    title: Chording Character Counter Timeout Timer
+      name: slow speed
-    description: 0-255 deciseconds; default is 40 or 4.0 seconds
+      range: [0, 255]
-  0x34:
+      unit: px
-    title: Chord Detection Press Tolerance(ms)
+    - id: 0x23
-    description: 1-50 milliseconds
+      name: fast speed
-  0x35:
+      range: [0, 255]
-    title: Chord Detection Release Tolerance(ms)
+      unit: px
-    description: 1-50 milliseconds
+    - id: 0x24
-  0x41:
+      name: caffeine
-    title: Enable Spurring
+      range: [0, 1]
-    description: boolean 0 or 1; default is 1
+      description: |
-  0x42:
+        Keeps computer alive by moving the mouse back and forth one pixel every 60s
-    title: Enable Spurring Character Counter Timeout
+    - id: 0x25
-    description: boolean 0 or 1; default is 1
+      name: scroll speed
-  0x43:
+      range: [0, 255]
-    title: Spurring Character Counter Timeout Timer
+      unit: pg
-    description: 0-255 seconds; default is 240
+    - id: 0x26
-  0x51:
+      name: poll rate
-    title: Enable Arpeggiates
+      range: [0, 255]
-    description: boolean 0 or 1; default is 1
+      unit: Hz
-  0x54:
+      inverse: 1000
-    title: Arpeggiate Tolerance
+- name: chording
-    description: in milliseconds; default 800ms
+  items:
-  0x61:
+    - id: 0x31
-    title: Enable Compound Chording (coming soon)
+      name: enable
-    description: boolean 0 or 1; default is 0
+      range: [0, 1]
-  0x64:
+    - id: 0x33
-    title: Compound Tolerance
+      name: auto delete timeout
-    description: in milliseconds; default 1500ms
+      range: [0, 25500]
-  0x81:
+      step: 100
-    title: LED Brightness
+    - id: 0x34
-    description: 0-50 (CCL only); default is 5, which draws around 100 mA of current
+      name: press tolerance
-  0x82:
+      description: |
-    title: LED Color Code
+        Scales with the number of chord inputs.
-    description: Color Codes to be listed (CCL only)
+      range: [0, 255]
-  0x83:
+      unit: ms
-    title: Enable LED Key Highlight (coming soon)
+    - id: 0x35
-    description: boolean 0 or 1 (CCL only)
+      name: release tolerance
-  0x84:
+      description: |
-    title: Enable LEDs
+        Scales with the number of chord inputs.
-    description: boolean 0 or 1; default is 1 (CCL only)
+      range: [0, 255]
-  0x91:
+      unit: ms
-    title: Operating System
+- name: leds
-    description: Operating system codes listed below
+  items:
-  0x92:
+    - id: 0x84
-    title: Enable Realtime Feedback
+      name: enable
-    description: boolean 0 or 1; default is 1
+      range: [0, 1]
-  0x93:
+    - id: 0x81
-    title: Enable CharaChorder Ready on startup
+      name: brightness
-    description: boolean 0 or 1; default is 1
+      range: [0, 50]
+    - id: 0x82
+      name: base color code
+      enum:
+        white: 0
+        red: 1
+        orange: 2
+        yellow: 3
+        charteuse: 4
+        green: 5
+        spring green: 6
+        cyan: 7
+        azure: 8
+        blue: 9
+        violet: 10
+        magenta: 11
+        rose: 12
+        rainbow: 13
+    - id: 0x83
+      name: highlight
+      range: [0, 1]
+- name: misc
+  items:
+    - id: 0x91
+      name: operating system
+      enum:
+        windows: 0
+        mac: 1
+        linux: 2
+        ios: 3
+        android: 4
+    - id: 0x92
+      name: GTM realtime feedback
+      range: [0, 1]
+    - id: 0x93
+      name: startup message
+      range: [0, 1]

src/lib/backup/backup.ts

@@ -14,7 +14,7 @@ import {
   settings,
 } from "$lib/undo-redo.js";
 import { get } from "svelte/store";
-import { serialPort } from "../serial/connection";
+import { activeProfile, serialPort } from "../serial/connection";
 import { csvLayoutToJson, isCsvLayout } from "$lib/backup/compat/legacy-layout";
 import { isCsvChords, csvChordsToJson } from "./compat/legacy-chords";
 
@@ -50,11 +50,9 @@ export function createLayoutBackup(): CharaLayoutFile {
     charaVersion: 1,
     type: "layout",
     device: get(serialPort)?.device,
-    layout: get(layout).map((it) => it.map((it) => it.action)) as [
+    layout: (get(layout)[get(activeProfile)]?.map((it) =>
-      number[],
+      it.map((it) => it.action),
-      number[],
+    ) ?? []) as [number[], number[], number[]],
-      number[],
-    ],
   };
 }
 
@@ -70,7 +68,7 @@ export function createSettingsBackup(): CharaSettingsFile {
   return {
     charaVersion: 1,
     type: "settings",
-    settings: get(settings).map((it) => it.value),
+    settings: get(settings)[get(activeProfile)]?.map((it) => it.value) ?? [],
   };
 }
 
@@ -97,9 +95,11 @@ export function restoreFromFile(
       const recent = file.history[0];
       if (!recent) return;
       let backupDevice = recent[1].device;
-      if (backupDevice === "TWO") backupDevice = "ONE";
+      if (backupDevice === "TWO" || backupDevice === "M4G")
+        backupDevice = "ONE";
       let currentDevice = get(serialPort)?.device;
-      if (currentDevice === "TWO") currentDevice = "ONE";
+      if (currentDevice === "TWO" || backupDevice === "M4G")
+        currentDevice = "ONE";
 
       if (backupDevice !== currentDevice) {
         alert("Backup is incompatible with this device");
@@ -107,32 +107,32 @@ export function restoreFromFile(
       }
 
       changes.update((changes) => {
-        changes.push(
+        changes.push([
           ...getChangesFromChordFile(recent[0]),
           ...getChangesFromLayoutFile(recent[1]),
           ...getChangesFromSettingsFile(recent[2]),
-        );
+        ]);
         return changes;
       });
       break;
     }
     case "chords": {
       changes.update((changes) => {
-        changes.push(...getChangesFromChordFile(file));
+        changes.push(getChangesFromChordFile(file));
         return changes;
       });
       break;
     }
     case "layout": {
       changes.update((changes) => {
-        changes.push(...getChangesFromLayoutFile(file));
+        changes.push(getChangesFromLayoutFile(file));
         return changes;
       });
       break;
     }
     case "settings": {
       changes.update((changes) => {
-        changes.push(...getChangesFromSettingsFile(file));
+        changes.push(getChangesFromSettingsFile(file));
         return changes;
       });
       break;
@@ -167,12 +167,13 @@ export function getChangesFromChordFile(file: CharaChordFile) {
 export function getChangesFromSettingsFile(file: CharaSettingsFile) {
   const changes: Change[] = [];
   for (const [id, value] of file.settings.entries()) {
-    const setting = get(settings)[id];
+    const setting = get(settings)[get(activeProfile)]?.[id];
     if (setting !== undefined && setting.value !== value) {
       changes.push({
         type: ChangeType.Setting,
         id,
         setting: value,
+        profile: get(activeProfile),
       });
     }
   }
@@ -183,12 +184,13 @@ export function getChangesFromLayoutFile(file: CharaLayoutFile) {
   const changes: Change[] = [];
   for (const [layer, keys] of file.layout.entries()) {
     for (const [id, action] of keys.entries()) {
-      if (get(layout)[layer]?.[id]?.action !== action) {
+      if (get(layout)[get(activeProfile)]?.[layer]?.[id]?.action !== action) {
         changes.push({
           type: ChangeType.Layout,
           layer,
           id,
           action,
+          profile: get(activeProfile),
         });
       }
     }

src/lib/ccos/attachment.ts

@@ -0,0 +1,26 @@
+import type { Attachment } from "svelte/attachments";
+import { browser } from "$app/environment";
+import { persistentWritable } from "$lib/storage";
+
+export const emulatedCCOS = persistentWritable("emulatedCCOS", false);
+
+export function ccosKeyInterceptor() {
+  return ((element: Window) => {
+    const ccos = browser
+      ? import("./ccos").then((module) => module.fetchCCOS(".test"))
+      : Promise.resolve(undefined);
+
+    function onEvent(event: KeyboardEvent) {
+      ccos.then((it) => it?.handleKeyEvent(event));
+    }
+
+    element.addEventListener("keydown", onEvent, true);
+    element.addEventListener("keyup", onEvent, true);
+
+    return () => {
+      ccos.then((it) => it?.destroy());
+      element.removeEventListener("keydown", onEvent, true);
+      element.removeEventListener("keyup", onEvent, true);
+    };
+  }) satisfies Attachment<Window>;
+}

src/lib/ccos/ccos-events.ts

@@ -0,0 +1,37 @@
+export interface CCOSInitEvent {
+  type: "init";
+  url: string;
+}
+
+export interface CCOSKeyPressEvent {
+  type: "press";
+  code: number;
+}
+
+export interface CCOSKeyReleaseEvent {
+  type: "release";
+  code: number;
+}
+
+export interface CCOSSerialEvent {
+  type: "serial";
+  data: number;
+}
+
+export type CCOSInEvent =
+  | CCOSInitEvent
+  | CCOSKeyPressEvent
+  | CCOSKeyReleaseEvent
+  | CCOSSerialEvent;
+
+export interface CCOSReportEvent {
+  type: "report";
+  modifiers: number;
+  keys: number[];
+}
+
+export interface CCOSReadyEvent {
+  type: "ready";
+}
+
+export type CCOSOutEvent = CCOSReportEvent | CCOSReadyEvent | CCOSSerialEvent;

src/lib/ccos/ccos-interop.ts

@@ -0,0 +1,111 @@
+export const KEYCODE_TO_SCANCODE = new Map<string, number | undefined>(
+  Object.entries({
+    KeyA: 0x04,
+    KeyB: 0x05,
+    KeyC: 0x06,
+    KeyD: 0x07,
+    KeyE: 0x08,
+    KeyF: 0x09,
+    KeyG: 0x0a,
+    KeyH: 0x0b,
+    KeyI: 0x0c,
+    KeyJ: 0x0d,
+    KeyK: 0x0e,
+    KeyL: 0x0f,
+    KeyM: 0x10,
+    KeyN: 0x11,
+    KeyO: 0x12,
+    KeyP: 0x13,
+    KeyQ: 0x14,
+    KeyR: 0x15,
+    KeyS: 0x16,
+    KeyT: 0x17,
+    KeyU: 0x18,
+    KeyV: 0x19,
+    KeyW: 0x1a,
+    KeyX: 0x1b,
+    KeyY: 0x1c,
+    KeyZ: 0x1d,
+    Digit1: 0x1e,
+    Digit2: 0x1f,
+    Digit3: 0x20,
+    Digit4: 0x21,
+    Digit5: 0x22,
+    Digit6: 0x23,
+    Digit7: 0x24,
+    Digit8: 0x25,
+    Digit9: 0x26,
+    Digit0: 0x27,
+    Enter: 0x28,
+    Escape: 0x29,
+    Backspace: 0x2a,
+    Tab: 0x2b,
+    Space: 0x2c,
+    Minus: 0x2d,
+    Equal: 0x2e,
+    BracketLeft: 0x2f,
+    BracketRight: 0x30,
+    Backslash: 0x31,
+    Semicolon: 0x33,
+    Quote: 0x34,
+    Backquote: 0x35,
+    Comma: 0x36,
+    Period: 0x37,
+    Slash: 0x38,
+    CapsLock: 0x39,
+    F1: 0x3a,
+    F2: 0x3b,
+    F3: 0x3c,
+    F4: 0x3d,
+    F5: 0x3e,
+    F6: 0x3f,
+    F7: 0x40,
+    F8: 0x41,
+    F9: 0x42,
+    F10: 0x43,
+    F11: 0x44,
+    F12: 0x45,
+    PrintScreen: 0x46,
+    ScrollLock: 0x47,
+    Pause: 0x48,
+    Insert: 0x49,
+    Home: 0x4a,
+    PageUp: 0x4b,
+    Delete: 0x4c,
+    End: 0x4d,
+    PageDown: 0x4e,
+    ArrowRight: 0x4f,
+    ArrowLeft: 0x50,
+    ArrowDown: 0x51,
+    ArrowUp: 0x52,
+    NumLock: 0x53,
+    NumpadDivide: 0x54,
+    NumpadMultiply: 0x55,
+    NumpadSubtract: 0x56,
+    NumpadAdd: 0x57,
+    NumpadEnter: 0x58,
+    Numpad1: 0x59,
+    Numpad2: 0x5a,
+    Numpad3: 0x5b,
+    Numpad4: 0x5c,
+    Numpad5: 0x5d,
+    Numpad6: 0x5e,
+    Numpad7: 0x5f,
+    Numpad8: 0x60,
+    Numpad9: 0x61,
+    Numpad0: 0x62,
+    NumpadDecimal: 0x63,
+    ControlLeft: 0xe0,
+    ShiftLeft: 0xe1,
+    AltLeft: 0xe2,
+    MetaLeft: 0xe3,
+    ControlRight: 0xe4,
+    ShiftRight: 0xe5,
+    AltRight: 0xe6,
+    MetaRight: 0xe7,
+  }),
+);
+
+export const SCANCODE_TO_KEYCODE = new Map<number, string>(
+  KEYCODE_TO_SCANCODE.entries().map(([key, value]) => [value!, key]),
+);

src/lib/ccos/ccos.ts

@@ -0,0 +1,210 @@
+import { getMeta } from "$lib/meta/meta-storage";
+import { connectable, from, multicast, Subject } from "rxjs";
+import type {
+  CCOSInitEvent,
+  CCOSKeyPressEvent,
+  CCOSKeyReleaseEvent,
+  CCOSOutEvent,
+} from "./ccos-events";
+import { KEYCODE_TO_SCANCODE, SCANCODE_TO_KEYCODE } from "./ccos-interop";
+
+const device = ".zero_wasm";
+
+class CCOSKeyboardEvent extends KeyboardEvent {
+  constructor(...params: ConstructorParameters<typeof KeyboardEvent>) {
+    super(...params);
+  }
+}
+
+const MASK_CTRL = 0b0001_0001;
+const MASK_SHIFT = 0b0010_0010;
+const MASK_ALT = 0b0100_0100;
+const MASK_ALT_GRAPH = 0b0000_0100;
+const MASK_GUI = 0b1000_1000;
+
+export class CCOS {
+  private readonly currKeys = new Set<number>();
+
+  private readonly layout = new Map<string, string>();
+
+  private readonly worker = new Worker("/ccos-worker.js", { type: "module" });
+
+  private ready = false;
+
+  private lastEvent?: KeyboardEvent;
+
+  private onKey(
+    type: ConstructorParameters<typeof KeyboardEvent>[0],
+    modifiers: number,
+    scanCode: number,
+  ) {
+    if (!this.lastEvent) {
+      return;
+    }
+
+    const code = SCANCODE_TO_KEYCODE.get(scanCode);
+    if (code === undefined) {
+      return;
+    }
+
+    const layoutKey = [code];
+    if (modifiers & MASK_SHIFT) {
+      layoutKey.push("Shift");
+    }
+    if (modifiers & MASK_ALT_GRAPH) {
+      layoutKey.push("AltGraph");
+    }
+    const key = this.layout.get(JSON.stringify(layoutKey)) ?? code;
+
+    const params: Required<KeyboardEventInit> = {
+      bubbles: true,
+      cancelable: true,
+      location: this.lastEvent.location,
+      repeat: this.lastEvent.repeat,
+      detail: this.lastEvent.detail,
+      view: this.lastEvent.view,
+      isComposing: this.lastEvent.isComposing,
+      which: this.lastEvent.which,
+      composed: this.lastEvent.composed,
+      key,
+      code,
+      charCode: key.charCodeAt(0),
+      keyCode: this.lastEvent.keyCode,
+      shiftKey: (modifiers & MASK_SHIFT) !== 0,
+      ctrlKey: (modifiers & MASK_CTRL) !== 0,
+      metaKey: (modifiers & MASK_GUI) !== 0,
+      altKey: (modifiers & MASK_ALT) !== 0,
+      modifierAltGraph: (modifiers & MASK_ALT_GRAPH) !== 0,
+      modifierCapsLock: this.lastEvent.getModifierState("CapsLock"),
+      modifierFn: this.lastEvent.getModifierState("Fn"),
+      modifierFnLock: this.lastEvent.getModifierState("FnLock"),
+      modifierHyper: this.lastEvent.getModifierState("Hyper"),
+      modifierNumLock: this.lastEvent.getModifierState("NumLock"),
+      modifierSuper: (modifiers & MASK_GUI) !== 0,
+      modifierSymbol: this.lastEvent.getModifierState("Symbol"),
+      modifierSymbolLock: this.lastEvent.getModifierState("SymbolLock"),
+      modifierScrollLock: this.lastEvent.getModifierState("ScrollLock"),
+    };
+
+    this.lastEvent.target?.dispatchEvent(new CCOSKeyboardEvent(type, params));
+  }
+
+  private onReport(modifiers: number, keys: number[]) {
+    const nextKeys = new Set<number>(keys);
+    nextKeys.delete(0);
+    for (const key of this.currKeys) {
+      if (!nextKeys.has(key)) {
+        this.onKey("keyup", modifiers, key);
+      }
+    }
+    for (const key of nextKeys) {
+      if (!this.currKeys.has(key)) {
+        this.onKey("keydown", modifiers, key);
+      }
+    }
+    this.currKeys.clear();
+    for (const key of keys) {
+      this.currKeys.add(key);
+    }
+    this.currKeys.delete(0);
+  }
+
+  private outStream = new Subject<number>();
+
+  private readonly buffer: number[] = [];
+  private readonly outStream = new WritableStream<number>({
+    start(controller) {},
+  });
+
+  readonly readable = connectable()
+  readonly writable = new WritableStream<string>();
+
+  constructor(url: string) {
+    this.worker.addEventListener(
+      "message",
+      (event: MessageEvent<CCOSOutEvent>) => {
+        switch (event.data.type) {
+          case "ready": {
+            this.ready = true;
+            break;
+          }
+          case "report": {
+            this.onReport(event.data.modifiers, event.data.keys);
+            break;
+          }
+          case "serial": {
+            this.outStream.next(event.data.data);
+            break;
+          }
+        }
+      },
+    );
+    (navigator as any).keyboard
+      ?.getLayoutMap()
+      ?.then((it: Map<string, string>) =>
+        it.entries().forEach(([key, value]) => {
+          this.layout.set(JSON.stringify([key]), value);
+        }),
+      );
+    this.worker.postMessage({
+      type: "init",
+      url,
+    } satisfies CCOSInitEvent);
+  }
+
+  async destroy() {
+    this.worker.terminate();
+  }
+
+  async handleKeyEvent(event: KeyboardEvent) {
+    if (
+      event.target instanceof HTMLInputElement ||
+      event.target instanceof HTMLTextAreaElement
+    ) {
+      console.error("CCOS does not support input elements");
+      return;
+    }
+
+    if (!this.ready || event instanceof CCOSKeyboardEvent) {
+      return;
+    }
+    event.stopImmediatePropagation();
+    event.preventDefault();
+    this.lastEvent = event;
+
+    const layoutKey = [event.code];
+    if (event.getModifierState("Shift")) {
+      layoutKey.push("Shift");
+    }
+    if (event.getModifierState("AltGraph")) {
+      layoutKey.push("AltGraph");
+    }
+    this.layout.set(JSON.stringify(layoutKey), event.key);
+
+    const scanCode = KEYCODE_TO_SCANCODE.get(event.code);
+    if (scanCode === undefined) return;
+    if (event.type === "keydown") {
+      this.worker.postMessage({
+        type: "press",
+        code: scanCode,
+      } satisfies CCOSKeyPressEvent);
+    } else {
+      this.worker.postMessage({
+        type: "release",
+        code: scanCode,
+      } satisfies CCOSKeyReleaseEvent);
+    }
+  }
+}
+
+export async function fetchCCOS(
+  version = ".test",
+  fetch: typeof window.fetch = window.fetch,
+): Promise<CCOS | undefined> {
+  const meta = await getMeta(device, version, fetch);
+  if (!meta?.update.js || !meta?.update.wasm) {
+    return undefined;
+  }
+
+  return new CCOS(`${meta.path}/${meta.update.js}`);
+}

src/lib/charrecorder/CharRecorder.svelte

@@ -113,15 +113,15 @@
     position: absolute;
     top: 0;
     left: 0;
-    font-family: inherit;
-    font-size: inherit;
     color: inherit;
+    font-size: inherit;
+    font-family: inherit;
     user-select: none;
   }
 
   svg > :global(text) {
-    font-family: inherit;
     font-size: inherit;
+    font-family: inherit;
     fill: currentColor;
     dominant-baseline: middle;
   }

src/lib/charrecorder/ChordHud.svelte

@@ -83,24 +83,24 @@
 
 <style>
   section {
+    display: grid;
     position: relative;
     margin: 1em;
     margin-bottom: 0;
-    display: grid;
     height: 3em;
     font-size: 2em;
   }
 
   .rating {
-    font-weight: bold;
     font-style: italic;
+    font-weight: bold;
     text-transform: uppercase;
   }
 
   .tile {
+    border-radius: 0.1em;
     width: 100%;
     height: 0.2em;
-    border-radius: 0.1em;
   }
 
   kbd {
@@ -112,19 +112,19 @@
   }
 
   .chord {
-    will-change: transform, opacity, scale;
+    display: flex;
     position: absolute;
     top: 0;
     left: 50%;
-    display: flex;
     flex-direction: column;
-    margin-inline-end: 1em;
-    padding-inline: 0.1em;
     justify-content: center;
     align-items: center;
     transition:
       opacity 0.3s ease,
       translate 0.3s ease,
       scale 0.3s ease;
+    will-change: transform, opacity, scale;
+    margin-inline-end: 1em;
+    padding-inline: 0.1em;
   }
 </style>

src/lib/charrecorder/TrackText.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+  import { getContext } from "svelte";
+  import type { ReplayPlayer } from "./core/player";
+  import { TextPlugin } from "./core/plugins/text";
+
+  const player: { player: ReplayPlayer | undefined } = getContext("replay");
+
+  let { text = $bindable("") } = $props();
+
+  $effect(() => {
+    if (!player.player) return;
+    const tracker = new TextPlugin();
+    tracker.register(player.player);
+    const unsubscribe = tracker.subscribe((value) => {
+      text = value;
+    });
+
+    return unsubscribe;
+  });
+</script>

src/lib/charrecorder/TrackWpm.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+  import { getContext } from "svelte";
+  import { WpmReplayPlugin } from "./core/plugins/wpm";
+  import type { ReplayPlayer } from "./core/player";
+
+  const player: { player: ReplayPlayer | undefined } = getContext("replay");
+
+  let { wpm = $bindable(0) } = $props();
+
+  $effect(() => {
+    if (!player.player) return;
+    const tracker = new WpmReplayPlugin();
+    tracker.register(player.player);
+    const unsubscribe = tracker.subscribe((value) => {
+      wpm = value;
+    });
+
+    return unsubscribe;
+  });
+</script>

src/lib/charrecorder/core/plugins/chords.ts

@@ -85,7 +85,6 @@ export class ChordsReplayPlugin
           }
         }
       }
-      console.log(this.tokens);
 
       clearTimeout(this.timeout);
       if (replay.stepper.held.size === 0) {

src/lib/charrecorder/core/plugins/text.ts

@@ -0,0 +1,23 @@
+import type { ReplayPlayer } from "../player";
+import type { ReplayPlugin, StoreContract } from "../types";
+
+export class TextPlugin implements StoreContract<string>, ReplayPlugin {
+  private subscribers = new Set<(value: string) => void>();
+
+  register(replay: ReplayPlayer) {
+    replay.subscribe(() => {
+      if (this.subscribers.size === 0) return;
+      const text = replay.stepper.text
+        .filter((it) => it.source !== "ghost")
+        .map((it) => it.text)
+        .join("");
+      for (const subscription of this.subscribers) {
+        subscription(text);
+      }
+    });
+  }
+  subscribe(subscription: (value: string) => void) {
+    this.subscribers.add(subscription);
+    return () => this.subscribers.delete(subscription);
+  }
+}

src/lib/charrecorder/renderer/renderer.ts

@@ -36,6 +36,7 @@ export class TextRenderer {
     );
     this.cursorNode.setAttribute("x", "0");
     this.cursorNode.setAttribute("y", "0");
+    this.cursorNode.setAttribute("class", "cursor");
     this.svg.appendChild(this.cursorNode);
   }
 

src/lib/chat/MatrixRoomMembers.svelte

@@ -37,16 +37,16 @@
 
 <style lang="scss">
   .avatar {
+    flex-shrink: 0;
     border-radius: 50%;
     width: 32px;
     height: 32px;
-    flex-shrink: 0;
   }
 
   .avatar-placeholder {
     display: flex;
-    align-items: center;
     justify-content: center;
+    align-items: center;
     font-size: 24px;
   }
 
@@ -61,8 +61,8 @@
     flex-direction: column;
     gap: 0.5rem;
     padding: 8px;
-    overflow-y: auto;
     height: 100%;
+    overflow-y: auto;
   }
 
   span {

src/lib/chat/MatrixRooms.svelte

@@ -0,0 +1,73 @@
+<script lang="ts">
+  import type { Room } from "matrix-js-sdk";
+  import { matrixClient, currentRoomId } from "./chat";
+
+  let { rooms }: { rooms: Room[] } = $props();
+</script>
+
+<div class="rooms">
+  {#each $matrixClient.getRooms() as room}
+    {@const avatar = room.getMxcAvatarUrl()}
+    <button
+      class:active={$currentRoomId === room.roomId}
+      class="room"
+      onclick={() => ($currentRoomId = room.roomId)}
+    >
+      {#if avatar}
+        <img
+          alt={room.name}
+          src={$matrixClient.mxcUrlToHttp(avatar, 16, 16)}
+          width="16"
+          height="16"
+        />
+      {:else}
+        <div>#</div>
+      {/if}
+      <div>{room.name}</div>
+    </button>
+  {/each}
+
+  {#await $matrixClient.publicRooms()}
+    <div>Loading...</div>
+  {:then rooms}
+    {#each rooms.chunk as room}
+      <button class="room" onclick={() => ($currentRoomId = room.roomId)}>
+        <div>#</div>
+        <div>{room.name}</div>
+      </button>
+    {/each}
+  {:catch error}
+    <div>{error.message}</div>
+  {/await}
+</div>
+
+<style lang="scss">
+  .rooms {
+    display: flex;
+    flex-direction: column;
+    gap: 4px;
+    padding: 8px;
+    padding-left: 0;
+    width: 100%;
+  }
+
+  .room {
+    display: flex;
+    justify-content: flex-start;
+    align-items: center;
+    gap: 0.5rem;
+    cursor: pointer;
+    border-radius: 8px;
+    padding-inline: 16px;
+    padding-block: 2px;
+    padding-block: 4px;
+    width: 100%;
+    height: unset;
+    min-height: 0;
+
+    &.active {
+      background: var(--md-sys-color-primary-container);
+      color: var(--md-sys-color-on-primary-container);
+    }
+  }
+</style>

src/lib/chat/MatrixTimeline.svelte

@@ -177,22 +177,18 @@
 <style lang="scss">
   $border-radius: 16px;
 
-  h2 {
-    height: min-content;
-  }
-
   .input {
-    border: 1px solid var(--md-sys-color-outline);
     flex-grow: 1;
     cursor: text;
+    border: 1px solid var(--md-sys-color-outline);
+    border-radius: $border-radius;
     padding: 0.5em;
     font-size: 1rem;
-    border-radius: $border-radius;
 
     text-wrap: wrap;
     white-space: pre-wrap;
-    overflow-wrap: break-word;
     word-break: break-word;
+    overflow-wrap: break-word;
 
     &:focus-visible {
       outline: none;
@@ -201,9 +197,9 @@
 
   .input-box {
     display: flex;
+    flex-shrink: 0;
     gap: 4px;
     padding-block: 8px;
-    flex-shrink: 0;
     width: 100%;
   }
 
@@ -213,39 +209,23 @@
   }
 
   .timeline {
-    contain: content;
-    height: auto;
     display: flex;
-    flex-direction: column-reverse;
-    overflow-y: scroll;
-    overflow-x: hidden;
     flex-grow: 1;
+    flex-direction: column-reverse;
+    contain: content;
     width: 100%;
-  }
+    height: auto;
-
+    overflow-x: hidden;
-  .back-to-present {
+    overflow-y: scroll;
-    position: fixed;
-    bottom: 0;
-  }
-
-  .scroll-controls {
-    position: sticky;
-    bottom: 0;
-    min-height: 16px;
-    background: linear-gradient(
-      to bottom,
-      transparent,
-      var(--md-sys-color-background)
-    );
   }
 
   section {
     display: flex;
     flex-direction: column;
-    overflow: hidden;
     justify-content: flex-end;
 
     width: 100%;
     height: 100%;
+    overflow: hidden;
   }
 </style>

src/lib/chat/chat-rx.ts

@@ -0,0 +1,109 @@
+import { derived, writable, type Writable } from "svelte/store";
+import type {
+  ClientEvent,
+  LoginResponse,
+  MatrixClient,
+  RoomMember,
+} from "matrix-js-sdk";
+import { persistentWritable } from "$lib/storage";
+import {
+  themeFromSourceColor,
+  argbFromHex,
+  type CustomColorGroup,
+} from "@material/material-color-utilities";
+import type { UserTheme } from "$lib/preferences";
+import { MatrixRx } from "./matrix-rx/client";
+
+export const matrixClient: Writable<MatrixClient> = writable();
+
+export const isLoggedIn: Writable<boolean> = writable(false);
+
+export const matrix = derived(
+  [matrixClient, isLoggedIn],
+  ([matrixClient, isLoggedIn]) =>
+    isLoggedIn ? new MatrixRx(matrixClient) : undefined,
+);
+
+export const currentRoomId = persistentWritable<string | null>(
+  "currentRoomId",
+  null,
+);
+
+function getStoredLogin(): LoginResponse | undefined {
+  try {
+    return JSON.parse(localStorage.getItem("matrix-login")!);
+  } catch {
+    return undefined;
+  }
+}
+
+export function storeLogin(response: LoginResponse) {
+  localStorage.setItem("matrix-login", JSON.stringify(response));
+}
+
+export async function initMatrixClient() {
+  const { createClient, IndexedDBStore, IndexedDBCryptoStore } = await import(
+    "matrix-js-sdk"
+  );
+
+  const storedLogin = getStoredLogin();
+
+  const store = new IndexedDBStore({
+    dbName: "matrix",
+    indexedDB: window.indexedDB,
+  });
+  const cryptoStore = new IndexedDBCryptoStore(
+    window.indexedDB,
+    "matrix-crypto",
+  );
+
+  const client = createClient({
+    baseUrl: import.meta.env.VITE_MATRIX_URL,
+    userId: storedLogin?.user_id,
+    accessToken: storedLogin?.access_token,
+    timelineSupport: true,
+    store,
+    cryptoStore,
+  });
+
+  console.log("store");
+  await store.startup();
+  console.log("cryptoStore");
+  await cryptoStore.startup();
+  console.log("client");
+  await client.startClient();
+  client.once("sync" as ClientEvent.Sync, () => {
+    isLoggedIn.set(client.isLoggedIn());
+  });
+
+  const loginToken = new URLSearchParams(window.location.search).get(
+    "loginToken",
+  );
+  if (loginToken) {
+    storeLogin(await client.loginWithToken(loginToken));
+    window.history.replaceState({}, document.title, window.location.pathname);
+    isLoggedIn.set(client.isLoggedIn());
+  }
+
+  matrixClient.set(client);
+  console.log("done");
+}
+
+export function memberColor(
+  member: RoomMember,
+  theme: UserTheme,
+): CustomColorGroup {
+  let hash = 0;
+  member.userId.split("").forEach((char) => {
+    hash = char.charCodeAt(0) + ((hash << 5) - hash);
+  });
+  let color = "#";
+  for (let i = 0; i < 3; i++) {
+    const value = (hash >> (i * 8)) & 0xff;
+    color += value.toString(16).padStart(2, "0");
+  }
+
+  return themeFromSourceColor(argbFromHex(theme.color), [
+    { value: argbFromHex(color), name: "member", blend: true },
+  ]).customColors.find((c) => c.color.name === "member")!;
+}

src/lib/chat/chat.ts

@@ -1,10 +1,5 @@
-import { derived, writable, type Writable } from "svelte/store";
+import { writable, type Writable } from "svelte/store";
-import type {
+import type { MatrixClient, RoomMember } from "matrix-js-sdk";
-  ClientEvent,
-  LoginResponse,
-  MatrixClient,
-  RoomMember,
-} from "matrix-js-sdk";
 import { persistentWritable } from "$lib/storage";
 import {
   themeFromSourceColor,
@@ -12,83 +7,14 @@ import {
   type CustomColorGroup,
 } from "@material/material-color-utilities";
 import type { UserTheme } from "$lib/preferences";
-import { MatrixRx } from "./matrix-rx/client";
 
 export const matrixClient: Writable<MatrixClient> = writable();
 
-export const isLoggedIn: Writable<boolean> = writable(false);
-
-export const matrix = derived(
-  [matrixClient, isLoggedIn],
-  ([matrixClient, isLoggedIn]) =>
-    isLoggedIn ? new MatrixRx(matrixClient) : undefined,
-);
-
 export const currentRoomId = persistentWritable<string | null>(
   "currentRoomId",
   null,
 );
 
-function getStoredLogin(): LoginResponse | undefined {
-  try {
-    return JSON.parse(localStorage.getItem("matrix-login")!);
-  } catch {
-    return undefined;
-  }
-}
-
-export function storeLogin(response: LoginResponse) {
-  localStorage.setItem("matrix-login", JSON.stringify(response));
-}
-
-export async function initMatrixClient() {
-  const { createClient, IndexedDBStore, IndexedDBCryptoStore } = await import(
-    "matrix-js-sdk"
-  );
-
-  const storedLogin = getStoredLogin();
-
-  const store = new IndexedDBStore({
-    dbName: "matrix",
-    indexedDB: window.indexedDB,
-  });
-  const cryptoStore = new IndexedDBCryptoStore(
-    window.indexedDB,
-    "matrix-crypto",
-  );
-
-  const client = createClient({
-    baseUrl: import.meta.env.VITE_MATRIX_URL,
-    userId: storedLogin?.user_id,
-    accessToken: storedLogin?.access_token,
-    timelineSupport: true,
-    store,
-    cryptoStore,
-  });
-
-  console.log("store");
-  await store.startup();
-  console.log("cryptoStore");
-  await cryptoStore.startup();
-  console.log("client");
-  await client.startClient();
-  client.once("sync" as ClientEvent.Sync, () => {
-    isLoggedIn.set(client.isLoggedIn());
-  });
-
-  const loginToken = new URLSearchParams(window.location.search).get(
-    "loginToken",
-  );
-  if (loginToken) {
-    storeLogin(await client.loginWithToken(loginToken));
-    window.history.replaceState({}, document.title, window.location.pathname);
-    isLoggedIn.set(client.isLoggedIn());
-  }
-
-  matrixClient.set(client);
-  console.log("done");
-}
-
 export function memberColor(
   member: RoomMember,
   theme: UserTheme,

src/lib/chat/events/MatrixEvent.svelte

@@ -191,6 +191,14 @@
       onmouseout={() => (toolbarHover = false)}
       onblur={() => (toolbarHover = false)}
     >
+      {#if event.getType() === "m.room.message"}
+        {@const message = event.event.content?.["body"]}
+        <a
+          class="icon rocket"
+          href="/learn/sentence/?sentence={encodeURIComponent(message)}"
+          >rocket_launch</a
+        >
+      {/if}
       <button class="icon">add_reaction</button>
       <button class="icon">reply</button>
       {#if event.event.content?.["m.replay"]}
@@ -231,21 +239,37 @@
     word-wrap: break-word;
   }
 
+  @keyframes rocket {
+    0% {
+      transform: translate(0, 0);
+    }
+    90% {
+      transform: translate(4px, -4px);
+    }
+    100% {
+      transform: translate(0, 0);
+    }
+  }
+  .icon.rocket {
+    animation: rocket 2s;
+  }
+
   .toolbar {
+    display: flex;
     position: absolute;
     top: -26px;
     right: 0;
-    background: var(--md-sys-color-secondary-container);
-    color: var(--md-sys-color-on-secondary-container);
-    padding: 4px;
-    border-radius: 4px;
-    display: flex;
     z-index: 100;
+    border-radius: 4px;
+    background: var(--md-sys-color-secondary-container);
+    padding: 4px;
+    color: var(--md-sys-color-on-secondary-container);
 
+    a,
     button {
-      font-size: 16px;
       width: 24px;
       height: 24px;
+      font-size: 16px;
     }
   }
 
@@ -265,10 +289,10 @@
   }
 
   .dot {
+    animation: bounce 1s infinite;
+    border-radius: 50%;
     width: 6px;
     height: 6px;
-    border-radius: 50%;
-    animation: bounce 1s infinite;
   }
 
   .sender,
@@ -278,10 +302,10 @@
 
   .avatar {
     grid-area: avatar;
+    translate: 0 2px;
+    border-radius: 50%;
     width: 32px;
     height: 32px;
-    border-radius: 50%;
-    translate: 0 2px;
   }
 
   div.avatar {
@@ -298,18 +322,18 @@
   }
 
   .reactions {
-    grid-area: reactions;
-    margin-top: 2px;
     display: flex;
+    grid-area: reactions;
     gap: 4px;
+    margin-top: 2px;
   }
 
   .reaction {
-    border: 1px solid var(--md-sys-color-outline);
-    padding: 6px;
-    border-radius: 6px;
-    height: 24px;
     display: flex;
+    border: 1px solid var(--md-sys-color-outline);
+    border-radius: 6px;
+    padding: 6px;
+    height: 24px;
     font-size: 12px;
 
     > .count {
@@ -320,16 +344,16 @@
   .event {
     display: grid;
     position: relative;
-    padding-inline: 0.5em;
+    grid-template-columns: 32px 1fr auto;
-    margin-inline: 0.5em;
-    padding-block: 0.25em;
-    border-radius: 4px;
 
     grid-template-areas:
       "avatar sender date"
       "avatar content content"
       "none reactions reactions";
-    grid-template-columns: 32px 1fr auto;
+    margin-inline: 0.5em;
+    border-radius: 4px;
+    padding-inline: 0.5em;
+    padding-block: 0.25em;
   }
 
   .content {
@@ -346,12 +370,12 @@
 
   .backdrop {
     position: absolute;
-    inset: 0;
-    z-index: -1;
     opacity: 0.25;
-
+    z-index: -1;
-    background: var(--md-sys-color-surface-variant);
+    inset: 0;
 
     border-radius: 8px;
+
+    background: var(--md-sys-color-surface-variant);
   }
 </style>

src/lib/chat/events/MatrixMessageEvent.svelte

@@ -39,9 +39,9 @@
   }
 
   img {
+    border-radius: 8px;
     max-width: 100%;
     max-height: 16em;
-    border-radius: 8px;
   }
 
   .content {

src/lib/components/Action.svelte

@@ -1,8 +1,8 @@
 <script lang="ts">
   import { KEYMAP_CODES } from "$lib/serial/keymap-codes";
   import type { KeyInfo } from "$lib/serial/keymap-codes";
-  import { action as title } from "$lib/title";
   import { osLayout } from "$lib/os-layout";
+  import { tooltip } from "$lib/hover-popover";
 
   let {
     action,
@@ -11,47 +11,56 @@
 
   let info = $derived(
     typeof action === "number"
-      ? (KEYMAP_CODES.get(action) ?? { code: action })
+      ? ($KEYMAP_CODES.get(action) ?? { code: action })
       : action,
   );
   let dynamicMapping = $derived(info.keyCode && $osLayout.get(info.keyCode));
 
-  let tooltip = $derived(
+  let popover: HTMLElement | undefined = $state(undefined);
-    `&lt;${info.id ?? `0x${info.code.toString(16)}`}&gt; ` +
-      (info.title ?? "") +
-      (info.variant === "left"
-        ? " (left)"
-        : info.variant === "right"
-          ? " (right)"
-          : ""),
-  );
 </script>
 
+{#snippet popoverSnippet()}
+  <div bind:this={popover} popover="hint">
+    &lt;{info.id ?? `0x${info.code.toString(16)}`}&gt;
+    {#if info.title}
+      {info.title}
+    {/if}
+    {#if info.variant === "left"}
+      (Left)
+    {:else if info.variant === "right"}
+      (Right)
+    {/if}
+  </div>
+{/snippet}
+
 {#if display === "keys"}
   <kbd
     class:icon={!!info.icon}
     class:left={info.variant === "left"}
     class:right={info.variant === "right"}
-    use:title={{ title: tooltip }}
+    {@attach tooltip(popover)}
   >
     {dynamicMapping ??
       info.icon ??
       info.display ??
       info.id ??
       `0x${info.code.toString(16)}`}
+    {@render popoverSnippet()}
   </kbd>
 {:else if display === "inline-keys"}
   {#if !info.icon && dynamicMapping?.length === 1}
     <span
-      use:title={{ title: tooltip }}
+      {@attach tooltip(popover)}
       class:left={info.variant === "left"}
-      class:right={info.variant === "right"}>{dynamicMapping}</span
+      class:right={info.variant === "right"}
+      >{dynamicMapping}{@render popoverSnippet()}</span
     >
   {:else if !info.icon && info.id?.length === 1}
     <span
-      use:title={{ title: tooltip }}
+      {@attach tooltip(popover)}
       class:left={info.variant === "left"}
-      class:right={info.variant === "right"}>{info.id}</span
+      class:right={info.variant === "right"}
+      >{info.id}{@render popoverSnippet()}</span
     >
   {:else}
     <kbd
@@ -59,22 +68,22 @@
       class:left={info.variant === "left"}
       class:right={info.variant === "right"}
       class:icon={!!info.icon}
-      use:title={{ title: tooltip }}
+      {@attach tooltip(popover)}
     >
       {dynamicMapping ??
         info.icon ??
         info.display ??
         info.id ??
-        `0x${info.code.toString(16)}`}</kbd
+        `0x${info.code.toString(16)}`}{@render popoverSnippet()}</kbd
     >
   {/if}
 {/if}
 
 <style lang="scss">
   kbd:not(.inline-kbd) {
-    height: 24px;
-    padding-block: auto;
     transition: color 250ms ease;
+    padding-block: auto;
+    height: 24px;
   }
 
   .left {
@@ -84,17 +93,6 @@
     border-right-width: 3px;
   }
 
-  .dynamic {
-    padding: 4px;
-    border-radius: 1px;
-    min-width: 8px;
-    background: var(--md-sys-color-surface-variant);
-
-    &.inline {
-      padding: 0px;
-    }
-  }
-
   .inline-kbd {
     margin-inline-end: 2px;
   }

src/lib/components/ActionListItem.svelte

@@ -12,7 +12,7 @@
     $props();
 
   let key = $derived(
-    (typeof id === "number" ? KEYMAP_CODES.get(id) ?? id : id) as
+    (typeof id === "number" ? ($KEYMAP_CODES.get(id) ?? id) : id) as
       | number
       | KeyInfo,
   );
@@ -48,33 +48,33 @@
 <style lang="scss">
   button {
     display: flex;
-    gap: 4px;
     align-items: center;
+    gap: 4px;
+    margin: 0;
+    border-radius: 8px;
+    padding: 8px;
 
     width: 100%;
     height: auto;
-    margin: 0;
-    padding: 8px;
 
     font-family: "Noto Sans Mono", monospace;
-    border-radius: 8px;
 
     @media not (forced-colors: active) {
-      color: inherit;
-
-      background: transparent;
       border: none;
 
+      background: transparent;
+      color: inherit;
+
       &:focus-visible {
-        color: var(--md-sys-color-on-surface-variant);
-        background: var(--md-sys-color-surface-variant);
         outline: none;
+        background: var(--md-sys-color-surface-variant);
+        color: var(--md-sys-color-on-surface-variant);
       }
     }
 
     @media (forced-colors: active) {
-      border: 1px solid ButtonBorder;
       margin-block: 4px;
+      border: 1px solid ButtonBorder;
 
       &:hover {
         color: ActiveText;
@@ -86,8 +86,8 @@
     display: flex;
     flex: 1;
     flex-direction: column;
-    align-items: flex-start;
     justify-content: flex-start;
+    align-items: flex-start;
 
     text-align: start;
   }

src/lib/components/AnimatedNumber.svelte

@@ -0,0 +1,51 @@
+<script lang="ts">
+  import { fade, slide } from "svelte/transition";
+
+  let { value }: { value: number } = $props();
+
+  let digits: number[] = $derived(value.toString().split("").map(Number));
+  const nums = Array.from({ length: 10 }, (_, i) => i);
+</script>
+
+<div class="digits" style:width="{digits.length}ch">
+  {#each digits as digit, i (digits.length - i)}
+    <div
+      class="digit-wrapper"
+      style:right="{digits.length - 1 - i}ch"
+      transition:fade
+    >
+      {#each nums as num (num)}
+        <div
+          class="digit"
+          style:transform="translateY({(digit - num) / 4}em)"
+          style:opacity={digit === num ? 1 : 0}
+        >
+          {num}
+        </div>
+      {/each}
+    </div>
+  {/each}
+</div>
+
+<style lang="scss">
+  .digits {
+    display: inline-block;
+    position: relative;
+    transition: width 500ms ease;
+  }
+
+  .digit-wrapper {
+    display: inline-grid;
+    width: 1ch;
+    height: 1em;
+  }
+
+  .digit {
+    display: inline-block;
+    grid-row: 1;
+    grid-column: 1;
+    transition:
+      transform 500ms ease,
+      opacity 500ms ease;
+  }
+</style>

src/lib/components/PwaStatus.svelte

@@ -16,8 +16,8 @@
 <style lang="scss">
   button {
     cursor: pointer;
-    color: var(--md-sys-color-on-background);
-    background: transparent;
     border: none;
+    background: transparent;
+    color: var(--md-sys-color-on-background);
   }
 </style>

src/lib/components/Terminal.svelte

@@ -33,63 +33,61 @@
 
 <style lang="scss">
   form {
+    display: flex;
     position: relative;
+    flex-direction: column;
 
     contain: strict;
-    overflow: hidden;
+
-    display: flex;
+    border-radius: 16px;
-    flex-direction: column;
 
     width: 100%;
     height: 100%;
+    overflow: hidden;
+    color: var(--md-sys-color-on-secondary);
+    font-size: 0.75rem;
 
     font-family: "Noto Sans Mono", monospace;
-    font-size: 0.75rem;
-    color: var(--md-sys-color-on-secondary);
-
-    border-radius: 16px;
   }
 
   fieldset::before {
-    content: "$";
-
     position: absolute;
     bottom: 8px;
     left: 8px;
+    content: "$";
 
     font-weight: 900;
   }
 
   input {
-    width: 100%;
+    appearance: none;
     margin-block-start: -16px;
+    border: none;
+    background: var(--md-sys-color-secondary);
     padding: 8px;
-    padding-block-start: 24px;
     padding-inline-start: calc(8px + 1.5ch);
+    padding-block-start: 24px;
+    width: 100%;
+    color: var(--md-sys-color-on-secondary);
+    font-weight: 600;
 
     font-family: "Noto Sans Mono", monospace;
-    font-weight: 600;
-    color: var(--md-sys-color-on-secondary);
-
-    appearance: none;
-    background: var(--md-sys-color-secondary);
-    border: none;
   }
 
   .io {
     --scrollbar-color: var(--md-sys-color-secondary);
+    flex: 1;
 
     z-index: 1;
+    border-radius: 0 0 16px 16px;
 
-    overflow-y: auto;
+    background: var(--md-sys-color-secondary-container);
-    flex: 1;
 
     padding: 12px;
 
-    color: var(--md-sys-color-on-secondary-container);
+    overflow-y: auto;
 
-    background: var(--md-sys-color-secondary-container);
+    color: var(--md-sys-color-on-secondary-container);
-    border-radius: 0 0 16px 16px;
   }
 
   :focus-visible {
@@ -99,10 +97,10 @@
   fieldset {
     all: unset;
 
-    position: relative;
-
     display: block;
 
+    position: relative;
+
     opacity: 0.8;
 
     transition: opacity 250ms ease;
@@ -113,16 +111,16 @@
   }
 
   .anchor {
-    overflow-anchor: auto;
     height: 1px;
+    overflow-anchor: auto;
   }
 
   code,
   samp,
   p {
     display: block;
-    overflow-anchor: none;
     margin-block: 0.15rem;
+    overflow-anchor: none;
   }
 
   p {
@@ -130,24 +128,24 @@
     justify-content: center;
 
     margin-block-end: 1rem;
+    border-radius: 8px;
+
+    background: var(--md-sys-color-secondary);
     padding: 0.25rem;
 
     color: var(--md-sys-color-on-secondary);
-
-    background: var(--md-sys-color-secondary);
-    border-radius: 8px;
   }
 
   code::before {
-    content: "> ";
     margin-block-end: 0.25rem;
-    font-weight: 900;
+    content: "> ";
     color: var(--md-sys-color-primary);
+    font-weight: 900;
   }
 
   ::selection {
-    color: var(--md-sys-color-background);
     background: var(--md-sys-color-on-background);
+    color: var(--md-sys-color-background);
   }
 
   @keyframes blink {

src/lib/components/Tooltip.svelte

@@ -20,8 +20,8 @@
 
     :global(kbd.icon) {
       display: inline-flex;
-      font-size: inherit;
       translate: 0 0.2em;
+      font-size: inherit;
     }
   }
 </style>

src/lib/components/layout/ActionSelector.svelte

@@ -3,12 +3,14 @@
     KEYMAP_CATEGORIES,
     KEYMAP_CODES,
     KEYMAP_IDS,
+    type KeyInfo,
   } from "$lib/serial/keymap-codes";
   import FlexSearch from "flexsearch";
   import { onMount } from "svelte";
   import ActionListItem from "$lib/components/ActionListItem.svelte";
   import LL from "$i18n/i18n-svelte";
   import { action } from "$lib/title";
+  import { get } from "svelte/store";
 
   let {
     currentAction = undefined,
@@ -27,10 +29,13 @@
   });
 
   const index = new FlexSearch.Index({ tokenize: "full" });
-  createIndex();
 
-  async function createIndex() {
+  $effect(() => {
-    for (const [, action] of KEYMAP_CODES) {
+    createIndex($KEYMAP_CODES);
+  });
+
+  async function createIndex(codes: Map<number, KeyInfo>) {
+    for (const [, action] of codes) {
       await index?.addAsync(
         action.code,
         `${action.title || ""} ${action.variant || ""} ${action.category} ${action.id || ""} ${
@@ -42,7 +47,7 @@
 
   async function search() {
     results = (await index!.searchAsync(searchBox.value)) as number[];
-    exact = KEYMAP_IDS.get(searchBox.value)?.code;
+    exact = get(KEYMAP_IDS).get(searchBox.value)?.code;
     code = Number(searchBox.value);
   }
 
@@ -82,7 +87,7 @@
 
   let searchBox: HTMLInputElement;
   let resultList: HTMLUListElement;
-  let filter = $state(new Set<number>());
+  let filter: Set<number> | undefined = $state(undefined);
 </script>
 
 <svelte:window on:keydown={keyboardNavigation} />
@@ -127,7 +132,7 @@
           bind:group={filter}
         /></label
       >
-      {#each KEYMAP_CATEGORIES as category}
+      {#each $KEYMAP_CATEGORIES as category}
         <label
           >{category.name}<input
             name="category"
@@ -167,7 +172,7 @@
       {#if filter !== undefined || results.length > 0}
         {@const resultValue =
           results.length === 0
-            ? Array.from(KEYMAP_CODES, ([it]) => it)
+            ? Array.from($KEYMAP_CODES, ([it]) => it)
             : results}
         {#each filter ? resultValue.filter( (it) => filter.has(it), ) : resultValue as id (id)}
           <li><ActionListItem {id} onclick={() => select(id)} /></li>
@@ -184,18 +189,17 @@
     border: none;
 
     label {
-      height: unset;
+      border: 1px solid currentcolor;
-      padding-block: 2px;
+      border-radius: 6px;
       padding-inline: 4px;
+      padding-block: 2px;
+      height: unset;
 
       font-size: 14px;
 
-      border: 1px solid currentcolor;
-      border-radius: 6px;
-
       &:has(:checked) {
-        color: var(--md-sys-color-on-secondary);
         background: var(--md-sys-color-secondary);
+        color: var(--md-sys-color-on-secondary);
       }
 
       input {
@@ -206,34 +210,33 @@
 
   dialog {
     display: flex;
-    align-items: center;
     justify-content: center;
+    align-items: center;
 
-    width: 100%;
+    border: none;
-    height: 100%;
 
     background: rgba(0 0 0 / 60%);
 
-    border: none;
+    width: 100%;
+    height: 100%;
   }
 
   aside {
-    pointer-events: none;
+    opacity: 0.4;
 
     margin: 8px;
-
-    opacity: 0.4;
     border: 1px dashed var(--md-sys-color-outline);
     border-radius: 8px;
+    pointer-events: none;
 
     > h3 {
-      width: fit-content;
+      margin-inline-start: 16px;
       margin-block-start: -13px;
       margin-block-end: 0;
-      margin-inline-start: 16px;
-      padding-inline: 8px;
 
       background: var(--md-sys-color-background);
+      padding-inline: 8px;
+      width: fit-content;
     }
 
     @media (prefers-contrast: more) {
@@ -248,26 +251,26 @@
 
   .search-row {
     display: flex;
-    gap: 4px;
     align-items: center;
+    gap: 4px;
     margin-inline: 16px;
   }
 
   .content {
-    position: relative;
-    transform-origin: top left;
-
-    overflow: hidden;
     display: flex;
+    position: relative;
     flex-direction: column;
+    transform-origin: top left;
+    border-radius: 16px;
+
+    background: var(--md-sys-color-background);
 
     width: calc(min(30cm, 90%));
     height: calc(min(100% - 128px, 90%));
 
-    color: var(--md-sys-color-on-background);
+    overflow: hidden;
 
-    background: var(--md-sys-color-background);
+    color: var(--md-sys-color-on-background);
-    border-radius: 16px;
 
     @media (forced-colors: active) {
       border: 1px solid CanvasText;
@@ -275,39 +278,38 @@
   }
 
   input[type="search"] {
-    width: 100%;
+    transition: all 250ms ease;
-    height: 64px;
     margin-block-end: 8px;
-    padding-inline: 16px;
-
-    font-family: inherit;
-    font-size: 16px;
-    color: currentcolor;
-
-    background: none;
     border: none;
     border-bottom: 1px solid var(--md-sys-color-surface-variant);
 
-    transition: all 250ms ease;
+    background: none;
+    padding-inline: 16px;
+    width: 100%;
+    height: 64px;
+    color: currentcolor;
+    font-size: 16px;
+
+    font-family: inherit;
 
     &:focus {
-      border-bottom: 1px solid var(--md-sys-color-primary);
       outline: none;
+      border-bottom: 1px solid var(--md-sys-color-primary);
     }
   }
 
   ul {
     --scrollbar-color: var(--md-sys-color-surface-variant);
 
-    scrollbar-gutter: both-edges stable;
-
-    overflow-y: auto;
-
     box-sizing: border-box;
-    height: 100%;
     margin: 0;
     padding: 0;
     padding-inline: 4px;
+    height: 100%;
+
+    overflow-y: auto;
+
+    scrollbar-gutter: both-edges stable;
   }
 
   li {
@@ -317,27 +319,27 @@
   .exact {
     display: flex;
     flex-direction: column;
-    align-items: center;
     justify-content: center;
-
+    align-items: center;
-    width: 100%;
     margin-block-start: 8px;
 
     border: 1px solid var(--md-sys-color-primary);
     border-radius: 8px;
 
+    width: 100%;
+
     > i {
       display: flex;
-      gap: 4px;
-      align-items: center;
       justify-content: center;
+      align-items: center;
+      gap: 4px;
+      border-radius: 0 0 8px 8px;
+
+      background: var(--md-sys-color-primary);
 
       padding-inline: 6px;
 
       color: var(--md-sys-color-on-primary);
-
-      background: var(--md-sys-color-primary);
-      border-radius: 0 0 8px 8px;
     }
 
     @media (forced-colors: active) {

src/lib/components/layout/GenericLayout.svelte

@@ -8,17 +8,16 @@
   import { dev } from "$app/environment";
   import ActionSelector from "$lib/components/layout/ActionSelector.svelte";
   import { get } from "svelte/store";
-  import type { Writable } from "svelte/store";
   import KeyboardKey from "$lib/components/layout/KeyboardKey.svelte";
   import { getContext, mount, unmount } from "svelte";
   import type { VisualLayoutConfig } from "./visual-layout.js";
   import { changes, ChangeType, layout } from "$lib/undo-redo";
   import { fly } from "svelte/transition";
   import { expoOut } from "svelte/easing";
+  import { activeLayer, activeProfile } from "$lib/serial/connection";
 
   const { scale, margin, strokeWidth, fontSize, iconFontSize } =
     getContext<VisualLayoutConfig>("visual-layout-config");
-  const activeLayer = getContext<Writable<number>>("active-layer");
 
   if (dev) {
     // you have absolutely no idea what a difference this makes for performance
@@ -125,8 +124,10 @@
     const keyInfo = layoutInfo.keys[index];
     if (!keyInfo) return;
     const clickedGroup = groupParent.children.item(index) as SVGGElement;
-    const nextAction = get(layout)[get(activeLayer)]?.[keyInfo.id];
+    const nextAction =
-    const currentAction = get(deviceLayout)[get(activeLayer)]?.[keyInfo.id];
+      get(layout)[get(activeProfile)]![get(activeLayer)]?.[keyInfo.id];
+    const currentAction =
+      get(deviceLayout)[get(activeProfile)]![get(activeLayer)]?.[keyInfo.id];
     const component = mount(ActionSelector, {
       target: document.body,
       props: {
@@ -137,12 +138,15 @@
         },
         onselect(action) {
           changes.update((changes) => {
-            changes.push({
+            changes.push([
-              type: ChangeType.Layout,
+              {
-              id: keyInfo.id,
+                type: ChangeType.Layout,
-              layer: get(activeLayer),
+                id: keyInfo.id,
-              action,
+                layer: get(activeLayer),
-            });
+                profile: get(activeProfile),
+                action,
+              },
+            ]);
             return changes;
           });
           closed();
@@ -215,9 +219,9 @@
 
 <style lang="scss">
   svg {
-    overflow: visible;
     grid-area: "d";
     width: calc(min(100%, 35cm));
     max-height: calc(100% - 170px);
+    overflow: visible;
   }
 </style>

src/lib/components/layout/KeyText.svelte

@@ -1,5 +1,4 @@
 <script lang="ts">
-  import { getContext } from "svelte";
   import type { Writable } from "svelte/store";
   import type { VisualLayoutConfig } from "$lib/components/layout/visual-layout";
   import type { CompiledLayoutKey } from "$lib/serialization/visual-layout";
@@ -7,10 +6,14 @@
   import { osLayout } from "$lib/os-layout.js";
   import { KEYMAP_CODES } from "$lib/serial/keymap-codes";
   import { action } from "$lib/title";
+  import { activeProfile, activeLayer } from "$lib/serial/connection";
+  import { getContext } from "svelte";
 
   const { fontSize, margin, inactiveOpacity, inactiveScale, iconFontSize } =
     getContext<VisualLayoutConfig>("visual-layout-config");
-  const activeLayer = getContext<Writable<number>>("active-layer");
+  const currentAction = getContext<Writable<Set<number>> | undefined>(
+    "highlight-action",
+  );
 
   let {
     key,
@@ -30,12 +33,14 @@
 </script>
 
 {#each positions as position, layer}
-  {@const { action: actionId, isApplied } = $layout[layer]?.[key.id] ?? {
+  {@const { action: actionId, isApplied } = $layout[$activeProfile]?.[layer]?.[
+    key.id
+  ] ?? {
     action: 0,
     isApplied: true,
   }}
   {@const { code, icon, id, display, title, keyCode, variant } =
-    KEYMAP_CODES.get(actionId) ?? { code: actionId }}
+    $KEYMAP_CODES.get(actionId) ?? { code: actionId }}
   {@const dynamicMapping = keyCode && $osLayout.get(keyCode)}
   {@const tooltip =
     (title ?? id ?? `0x${code.toString(16)}`) +
@@ -47,6 +52,7 @@
   ]}
   {@const hasIcon = !dynamicMapping && !!icon}
   <text
+    class:hidden={$currentAction?.has(actionId) === false}
     fill={isApplied ? "currentcolor" : "var(--md-sys-color-primary)"}
     font-weight={isApplied ? "" : "bold"}
     text-anchor="middle"
@@ -77,15 +83,15 @@
   $transition: 200ms;
 
   text {
-    will-change: translate, scale;
-    user-select: none;
-    transform-origin: center;
     transform-box: fill-box;
+    transform-origin: center;
     transition:
       fill #{$focus-transition} ease,
       opacity #{$transition} ease,
       translate #{$transition} ease,
       scale #{$transition} ease;
+    will-change: translate, scale;
+    user-select: none;
 
     @media (prefers-contrast: more) {
       --inactive-opacity: 0.8;
@@ -96,4 +102,8 @@
   text:focus-within {
     outline: none;
   }
+
+  text.hidden {
+    opacity: 0.2;
+  }
 </style>

src/lib/components/layout/KeyboardKey.svelte

@@ -8,11 +8,14 @@
     KeyboardEventHandler,
     MouseEventHandler,
   } from "svelte/elements";
+  import { type Writable } from "svelte/store";
 
   const { scale, margin, strokeWidth } = getContext<VisualLayoutConfig>(
     "visual-layout-config",
   );
 
+  const highlight = getContext<Writable<Set<number>> | undefined>("highlight");
+
   let {
     i,
     key,
@@ -35,6 +38,8 @@
 
 <g
   class="key-group"
+  class:highlight={$highlight?.has(key.id) === true}
+  class:faded={$highlight?.has(key.id) === false}
   {onclick}
   {onkeypress}
   {onfocusin}
@@ -108,14 +113,14 @@
   $transition: 200ms;
 
   rect {
-    transform-origin: center;
     transform-box: fill-box;
+    transform-origin: center;
   }
 
   path,
   g {
-    transform-origin: top left;
     transform-box: fill-box;
+    transform-origin: top left;
   }
 
   path,
@@ -131,15 +136,17 @@
     stroke-opacity: 0.3;
   }
 
+  g.faded,
   g:hover {
-    cursor: default;
     opacity: 0.6;
     transition: opacity #{$transition} ease;
+    cursor: default;
   }
 
+  g.highlight,
   g:focus-within {
-    color: var(--md-sys-color-primary);
     outline: none;
+    color: var(--md-sys-color-primary);
 
     > path,
     > rect {

src/lib/components/layout/Layout.svelte

@@ -1,20 +1,11 @@
 <script lang="ts">
-  import { serialPort } from "$lib/serial/connection";
+  import { deviceMeta, serialPort } from "$lib/serial/connection";
   import { action } from "$lib/title";
   import GenericLayout from "$lib/components/layout/GenericLayout.svelte";
-  import { getContext } from "svelte";
+  import { activeProfile, activeLayer } from "$lib/serial/connection";
-  import type { Writable } from "svelte/store";
   import type { VisualLayout } from "$lib/serialization/visual-layout";
-  import { fade } from "svelte/transition";
+  import { fade, fly } from "svelte/transition";
-
+  import { restoreFromFile } from "$lib/backup/backup";
-  let device = $derived($serialPort?.device);
-  const activeLayer = getContext<Writable<number>>("active-layer");
-
-  const layers = [
-    ["Numeric Layer", "123", 1],
-    ["Primary Layer", "abc", 0],
-    ["Function Layer", "function", 2],
-  ] as const;
 
   const layouts = {
     ONE: () =>
@@ -41,23 +32,43 @@
       import("$lib/assets/layouts/m4gr.yml").then(
         (it) => it.default as VisualLayout,
       ),
+    T4G: () =>
+      import("$lib/assets/layouts/t4g.yml").then(
+        (it) => it.default as VisualLayout,
+      ),
   };
 </script>
 
 <div class="container">
-  {#if device}
+  {#if $serialPort}
-    {#await layouts[device]() then visualLayout}
+    {#await layouts[$serialPort.device]() then visualLayout}
       <fieldset transition:fade>
-        {#each layers as [title, icon, value]}
+        <div class="layers">
+          {#each Array.from({ length: $serialPort.layerCount }, (_, i) => i) as layer}
+            <label>
+              <input
+                type="radio"
+                onclick={() => ($activeLayer = layer)}
+                name="layer"
+                value={layer}
+                checked={$activeLayer === layer}
+              />
+              {String.fromCodePoint(
+                "A".codePointAt(0)! + $activeProfile,
+              )}{layer + 1}
+            </label>
+          {/each}
+        </div>
+        {#if $deviceMeta?.factoryDefaults?.layout}
           <button
-            class="icon"
+            use:action={{ title: "Reset Layout" }}
-            use:action={{ title, shortcut: `alt+${value + 1}` }}
+            transition:fly={{ x: -8 }}
-            onclick={() => ($activeLayer = value)}
+            class="icon reset-layout"
-            class:active={$activeLayer === value}
+            onclick={() =>
+              restoreFromFile($deviceMeta!.factoryDefaults!.layout)}
+            >reset_wrench</button
           >
-            {icon}
+        {/if}
-          </button>
-        {/each}
       </fieldset>
 
       <GenericLayout {visualLayout} />
@@ -69,8 +80,8 @@
   .container {
     display: flex;
     flex-direction: column;
-    align-items: center;
     justify-content: center;
+    align-items: center;
 
     width: 100%;
     height: 100%;
@@ -78,62 +89,23 @@
   }
 
   fieldset {
-    position: relative;
-
     display: flex;
-    align-items: center;
+    position: relative;
     justify-content: center;
+    align-items: center;
+
+    border: none;
 
     padding: 8px;
-
-    border: none;
   }
 
-  button.icon {
+  .layers {
-    cursor: pointer;
+    display: flex;
+    justify-content: center;
+    align-items: center;
 
-    z-index: 1;
+    gap: 2px;
 
-    font-size: 24px;
+    margin-inline: auto;
-    color: var(--md-sys-color-on-surface-variant);
-
-    background: var(--md-sys-color-surface-variant);
-    border: none;
-
-    transition: all 250ms ease;
-
-    &:nth-child(2) {
-      z-index: 2;
-
-      aspect-ratio: 1;
-
-      font-size: 32px;
-
-      border-radius: 50%;
-    }
-
-    &:first-child,
-    &:last-child {
-      aspect-ratio: unset;
-      height: unset;
-    }
-
-    &:first-child {
-      margin-inline-end: -8px;
-      padding-inline: 4px 24px;
-      border-radius: 16px 0 0 16px;
-    }
-
-    &:last-child {
-      margin-inline-start: -8px;
-      padding-inline: 24px 4px;
-      border-radius: 0 16px 16px 0;
-    }
-
-    &.active {
-      font-weight: 900;
-      color: var(--md-sys-color-on-tertiary);
-      background: var(--md-sys-color-tertiary);
-    }
   }
 </style>

src/lib/dialogs/ConfirmDialog.svelte

@@ -1,13 +1,14 @@
 <script lang="ts">
   import Dialog from "$lib/dialogs/Dialog.svelte";
-  import ActionString from "$lib/components/ActionString.svelte";
+  import type { Chord } from "$lib/serial/chord";
+  import ChordActionEdit from "../../routes/(app)/config/chords/ChordActionEdit.svelte";
 
   let {
     title,
     message,
     abortTitle,
     confirmTitle,
-    actions = [],
+    chord,
     onabort,
     onconfirm,
   }: {
@@ -15,7 +16,7 @@
     message?: string;
     abortTitle: string;
     confirmTitle: string;
-    actions: number[];
+    chord: Chord & { deleted: boolean };
     onabort: () => void;
     onconfirm: () => void;
   } = $props();
@@ -26,7 +27,20 @@
   {#if message}
     <p>{@html message}</p>
   {/if}
-  <p><ActionString {actions} /></p>
+  <p>
+    <ChordActionEdit
+      chord={{
+        ...chord,
+        isApplied: false,
+        phraseChanged: false,
+        actionsChanged: false,
+        sortBy: "",
+        id: chord.actions,
+      }}
+      interactive={false}
+      onsubmit={() => {}}
+    />
+  </p>
   <div class="buttons">
     <button onclick={onabort}>{abortTitle}</button>
     <button class="primary" onclick={onconfirm}>{confirmTitle}</button>

src/lib/dialogs/ConnectionFailed.svelte

@@ -0,0 +1,106 @@
+<script lang="ts">
+  import Dialog from "$lib/dialogs/Dialog.svelte";
+  import LL from "$i18n/i18n-svelte";
+
+  let {
+    message,
+    onclose,
+  }: {
+    message: string;
+    onclose: () => void;
+  } = $props();
+</script>
+
+<Dialog>
+  {#if !navigator.serial}
+    <h1>Incompatible Browser</h1>
+    <p>Your browser does not support the Web Serial API.</p>
+    <p>Supported browsers are any Chromium based Browsers, such as</p>
+    <ul>
+      <li>Google Chrome</li>
+      <li>Microsoft Edge</li>
+      <li>Opera</li>
+      <li>Brave</li>
+    </ul>
+  {:else}
+    <h1>Connection Failed</h1>
+    <pre>{message}</pre>
+    <h2>Troubleshooting Steps</h2>
+    <ul>
+      {#if navigator.userAgent.includes("Linux")}
+        <li>
+          <p>{@html $LL.deviceManager.LINUX_PERMISSIONS()}</p>
+          <p>
+            In most cases you can simply follow the <a
+              target="_blank"
+              href="https://docs.arduino.cc/software/ide-v1/tutorials/Linux#please-read"
+              >Arduino Guide</a
+            > on serial port permissions.
+          </p>
+          <p>Special systems:</p>
+          <ul>
+            <li>
+              <a
+                target="_blank"
+                href="https://wiki.archlinux.org/title/Arduino#Accessing_serial"
+                >Arch and Arch-based like Manjaro or EndeavourOS</a
+              >
+            </li>
+            <li>
+              <a
+                target="_blank"
+                href="https://gist.github.com/CMCDragonkai/d00201ec143c9f749fc49533034e5009?permalink_comment_id=4670311#gistcomment-4670311"
+                >NixOS</a
+              >
+            </li>
+            <li>
+              <a
+                target="_blank"
+                href="https://wiki.gentoo.org/wiki/Arduino#Grant_access_to_non-root_users"
+                >Gentoo</a
+              >
+            </li>
+          </ul>
+        </li>
+      {/if}
+      <li>
+        You device may be pre-CCOS. refer to <a
+          target="_blank"
+          href="https://docs.charachorder.com/CCOS.html#upgrade-to-ccos"
+          >Upgrade to CCOS</a
+        > on how to upgrade your device.
+      </li>
+      <li>
+        Some USB cables or hubs can cause issues, try directly connecting to a
+        port on your computer with the included cable.
+      </li>
+    </ul>
+  {/if}
+  <div class="buttons">
+    <button class="primary" onclick={onclose}>Close</button>
+  </div>
+</Dialog>
+
+<style lang="scss">
+  h1 {
+    color: var(--md-sys-color-error);
+    font-size: 2em;
+    text-align: center;
+  }
+
+  .buttons {
+    display: flex;
+    justify-content: flex-end;
+    width: 100%;
+  }
+
+  pre {
+    color: var(--md-sys-color-error);
+  }
+
+  a {
+    display: inline;
+    padding: 0;
+    color: var(--md-sys-color-primary);
+  }
+</style>

src/lib/dialogs/Dialog.svelte

@@ -16,15 +16,15 @@
 
 <style lang="scss">
   dialog {
+    box-shadow: 0 0 48px rgba(0 0 0 / 60%);
+    border: none;
+    border-radius: 38px;
+
+    background: var(--md-sys-color-background);
     min-width: 300px;
     max-width: 512px;
 
     color: var(--md-sys-color-on-background);
-
-    background: var(--md-sys-color-background);
-    border: none;
-    border-radius: 38px;
-    box-shadow: 0 0 48px rgba(0 0 0 / 60%);
   }
 
   dialog::backdrop {

src/lib/dialogs/confirm-dialog.ts

@@ -1,33 +1,34 @@
 import ConfirmDialog from "$lib/dialogs/ConfirmDialog.svelte";
+import { mount, unmount } from "svelte";
+import type { Chord } from "$lib/serial/chord";
 
 export async function askForConfirmation(
   title: string,
   message: string,
   confirmTitle: string,
   abortTitle: string,
-  actions: number[],
+  chord: Chord,
 ): Promise<boolean> {
-  const dialog = new ConfirmDialog({
+  let resolvePromise: (value: boolean) => void;
+  const resultPromise = new Promise<boolean>((resolve) => {
+    resolvePromise = resolve;
+  });
+
+  const dialog = mount(ConfirmDialog, {
     target: document.body,
     props: {
       title,
       message,
       confirmTitle,
       abortTitle,
-      actions,
+      chord,
+      onabort: () => resolvePromise(false),
+      onconfirm: () => resolvePromise(true),
     },
   });
 
-  let resolvePromise: (value: boolean) => void;
-  const resultPromise = new Promise<boolean>((resolve) => {
-    resolvePromise = resolve;
-  });
-
-  dialog.$on("abort", () => resolvePromise(false));
-  dialog.$on("confirm", () => resolvePromise(true));
-
   const result = await resultPromise;
-  dialog.$destroy();
+  unmount(dialog);
 
   return result;
 }

src/lib/dialogs/connection-failed-dialog.ts

@@ -0,0 +1,24 @@
+import ConnectionFailed from "$lib/dialogs/ConnectionFailed.svelte";
+import { mount, unmount } from "svelte";
+
+export async function showConnectionFailedDialog(
+  message: string,
+): Promise<void> {
+  let resolvePromise: (value: void) => void;
+  const resultPromise = new Promise<void>((resolve) => {
+    resolvePromise = resolve;
+  });
+
+  const dialog = mount(ConnectionFailed, {
+    target: document.body,
+    props: {
+      message,
+      onclose: () => resolvePromise(),
+    },
+  });
+
+  const result = await resultPromise;
+  unmount(dialog);
+
+  return result;
+}

src/lib/fonts/material-symbols-rounded.scss

@@ -1,33 +1,33 @@
 @font-face {
-  font-family: "Material Symbols Rounded";
-  font-weight: 100 700;
   font-style: normal;
+  font-weight: 100 700;
   src: url("$lib/assets/icons.min.woff2") format("woff2");
+  font-family: "Material Symbols Rounded";
 }
 
 .icon {
-  user-select: none;
-
-  direction: ltr;
   display: inline-block;
+  font-style: normal;
+  font-weight: normal;
+  font-size: 24px;
+  line-height: 1;
 
   /* stylelint-disable-next-line */
   font-family: "Material Symbols Rounded";
-  font-size: 24px;
-  font-feature-settings: "liga";
   font-variation-settings:
     "FILL" var(--icon-fill, 0),
     "wght" var(--icon-weigth, 400),
     "GRAD" var(--icon-grade, 0);
-  font-weight: normal;
+  font-feature-settings: "liga";
-  font-style: normal;
-  line-height: 1;
-  text-transform: none;
   letter-spacing: normal;
+
+  direction: ltr;
+  user-select: none;
+  text-transform: none;
   word-wrap: normal;
-  white-space: nowrap;
 
   transition: font-variation-settings 250ms ease;
+  white-space: nowrap;
 
   -moz-osx-font-smoothing: grayscale;
 }

src/lib/fonts/noto-sans-mono.scss

@@ -66,28 +66,30 @@
 
 /* noto-sans-mono-latin-ext-wght-normal */
 @font-face {
-  font-family: "Noto Sans Mono Variable";
-  font-weight: 100 900;
   font-style: normal;
-  font-display: swap;
+  font-weight: 100 900;
   font-stretch: 62.5% 100%;
   src: url("@fontsource-variable/noto-sans-mono/files/noto-sans-mono-latin-ext-wght-normal.woff2")
     format("woff2-variations");
-  unicode-range: U+0100-02AF, U+0300-0301, U+0303-0304, U+0308-0309, U+0323,
+  font-family: "Noto Sans Mono Variable";
-    U+0329, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F,
+  font-display: swap;
+  unicode-range:
+    U+0100-02AF, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329,
+    U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F,
     U+A720-A7FF;
 }
 
 /* noto-sans-mono-latin-wght-normal */
 @font-face {
-  font-family: "Noto Sans Mono";
-  font-weight: 100 900;
   font-style: normal;
-  font-display: swap;
+  font-weight: 100 900;
   font-stretch: 62.5% 100%;
   src: url("@fontsource-variable/noto-sans-mono/files/noto-sans-mono-latin-wght-normal.woff2")
     format("woff2-variations");
-  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
+  font-family: "Noto Sans Mono";
-    U+02DC, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+2000-206F,
+  font-display: swap;
-    U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
+  unicode-range:
+    U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
+    U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+2000-206F, U+2074,
+    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
 }

src/lib/hover-popover.ts

@@ -0,0 +1,39 @@
+import type { Attachment } from "svelte/attachments";
+
+export const hotkeys = new Map<string, HTMLElement>();
+
+export function tooltip(
+  target: HTMLElement | undefined,
+  shortcut?: string,
+): Attachment<HTMLElement> {
+  return (node: HTMLElement) => {
+    function show() {
+      if (!target) return;
+      target.showPopover({ source: node });
+    }
+    function hide() {
+      if (!target) return;
+      target.hidePopover();
+    }
+
+    node.addEventListener("mouseenter", show);
+    node.addEventListener("focus", show);
+    node.addEventListener("mouseout", hide);
+    node.addEventListener("blur", hide);
+
+    if (shortcut && node instanceof HTMLElement) {
+      hotkeys.set(shortcut, node);
+    }
+
+    return () => {
+      node.removeEventListener("mouseenter", show);
+      node.removeEventListener("focus", show);
+      node.removeEventListener("mouseout", hide);
+      node.removeEventListener("blur", hide);
+
+      if (shortcut && node instanceof HTMLElement) {
+        hotkeys.delete(shortcut);
+      }
+    };
+  };
+}

src/lib/meta/meta-storage.ts

@@ -0,0 +1,150 @@
+import type { RawVersionMeta, SettingsMeta, VersionMeta } from "./types/meta";
+import type { Listing } from "./types/listing";
+import type { KeymapCategory } from "./types/actions";
+import { browser } from "$app/environment";
+
+let lock: Promise<void> | undefined = undefined;
+
+export async function getMeta(
+  device: string,
+  version: string,
+  fetch: typeof window.fetch = window.fetch,
+): Promise<VersionMeta> {
+  while (lock) await lock;
+  let resolveLock!: () => void;
+  lock = new Promise((resolve) => (resolveLock = resolve));
+
+  try {
+    if (!browser) return fetchMeta(device, version, fetch);
+
+    const dbRequest = indexedDB.open("version-meta", 4);
+    const db = await new Promise<IDBDatabase>((resolve, reject) => {
+      dbRequest.onsuccess = () => resolve(dbRequest.result);
+      dbRequest.onerror = () => reject(dbRequest.error);
+      dbRequest.onupgradeneeded = () => {
+        const db = dbRequest.result;
+        if (db.objectStoreNames.contains("meta")) {
+          db.deleteObjectStore("meta");
+        }
+        db.createObjectStore("meta", { keyPath: ["device", "version"] });
+      };
+    });
+    console.log("upgrading version meta db");
+
+    try {
+      const readTransaction = db.transaction(["meta"], "readonly");
+      const store = readTransaction.objectStore("meta");
+      const itemRequest = store.get([device, version]);
+      const item = await new Promise<VersionMeta | undefined>((resolve) => {
+        itemRequest.onsuccess = () => resolve(itemRequest.result);
+        itemRequest.onerror = () => resolve(undefined);
+      });
+
+      if (item) return item;
+
+      const meta = await fetchMeta(device, version);
+
+      const putTransaction = db.transaction(["meta"], "readwrite");
+      const putStore = putTransaction.objectStore("meta");
+      const putRequest = putStore.put(meta);
+      await new Promise<void>((resolve, reject) => {
+        putRequest.onsuccess = () => resolve();
+        putRequest.onerror = () => reject(putRequest.error);
+      });
+      putTransaction.commit();
+
+      return meta;
+    } finally {
+      db.close();
+    }
+  } catch (error) {
+    console.error(error);
+  } finally {
+    resolveLock();
+    lock = undefined;
+  }
+  return fetchMeta(device, version, fetch);
+}
+
+async function fetchMeta(
+  device: string,
+  version: string,
+  fetch: typeof window.fetch = window.fetch,
+): Promise<VersionMeta> {
+  const path = `${import.meta.env.VITE_FIRMWARE_URL}/${device}/${version}`;
+  const files: Listing[] = await fetch(`${path}/`)
+    .then((res) => res.json())
+    .catch(() => []);
+  const meta: Partial<RawVersionMeta> | undefined = files.some(
+    (entry) => entry.type === "file" && entry.name === "meta.json",
+  )
+    ? await fetch(`${path}/meta.json`).then((res) => res.json())
+    : undefined;
+
+  return {
+    version: meta?.version ?? version,
+    device: meta?.target ?? device,
+    date: new Date(meta?.git_date ?? files[0]?.mtime ?? ""),
+    path,
+    commit: meta?.git_commit ?? undefined,
+    dirty: meta?.git_is_dirty ?? false,
+    public: meta?.public_build ?? !version.includes("+"),
+    developmentBuild: (meta?.development_mode ?? 0) === 1,
+    factoryDefaults: meta?.factory_defaults
+      ? {
+          layout: await fetch(`${path}/${meta.factory_defaults.layout}`).then(
+            (it) => it.json(),
+          ),
+          settings: await fetch(
+            `${path}/${meta.factory_defaults.settings}`,
+          ).then((it) => it.json()),
+          chords: Object.fromEntries(
+            await Promise.all(
+              Object.entries(meta.factory_defaults.chords).map(
+                async ([name, file]) => [
+                  name,
+                  await fetch(`${path}/${file}`).then((it) => it.json()),
+                ],
+              ),
+            ),
+          ),
+        }
+      : undefined,
+    settings: await (meta?.settings
+      ? fetch(`${path}/${meta.settings}`).then((it) => it.json())
+      : import("$lib/assets/settings.yml")
+          .then((it) => (it as any).default)
+          .then((settings: SettingsMeta[]) => {
+            if (!device.startsWith("lite_")) {
+              settings = settings.filter((it) => it.name !== "leds");
+            }
+            return settings;
+          })),
+    changelog: await (meta?.changelog
+      ? fetch(`${path}/${meta.changelog}`).then((it) => it.json())
+      : {}),
+    actions: await (meta?.actions
+      ? fetch(`${path}/${meta.actions}`).then((it) => it.json())
+      : Promise.all<KeymapCategory[]>(
+          Object.values(import.meta.glob("$lib/assets/keymaps/*.yml")).map(
+            async (load) => load().then((it) => (it as any).default),
+          ),
+        )),
+    update: {
+      uf2:
+        meta?.update?.uf2 ??
+        files.find(
+          (entry) => entry.type === "file" && entry.name === "CURRENT.UF2",
+        )?.name ??
+        undefined,
+      ota:
+        meta?.update?.ota ??
+        files.find(
+          (entry) => entry.type === "file" && entry.name === "firmware.bin",
+        )?.name ??
+        undefined,
+      esptool: meta?.update?.esptool ?? undefined,
+    },
+    spiFlash: meta?.spi_flash ?? undefined,
+  };
+}

src/lib/meta/types/actions.ts

@@ -0,0 +1,19 @@
+export interface KeymapCategory {
+  name: string;
+  description: string;
+  icon?: string;
+  display?: string;
+  type?: "unassigned";
+  actions: Record<number, Partial<ActionInfo>>;
+}
+
+export interface ActionInfo {
+  id: string;
+  title: string;
+  icon: string;
+  display: string;
+  description: string;
+  variant: "left" | "right";
+  variantOf: number;
+  keyCode: string;
+}

src/lib/meta/types/meta.ts

@@ -0,0 +1,108 @@
+import type {
+  CharaChordFile,
+  CharaLayoutFile,
+  CharaSettingsFile,
+} from "$lib/share/chara-file";
+import type { KeymapCategory } from "./actions";
+
+export interface SettingsMeta {
+  name: string;
+  description?: string;
+  items: SettingsItemMeta[];
+}
+
+export interface SettingsItemMeta {
+  id: number;
+  description?: string;
+  enum?: string[];
+  range: [number, number];
+  step?: number;
+  unit?: string;
+  inverse?: number;
+  scale?: number;
+}
+
+export interface ChangelogEntry {
+  summary: string;
+  description: string;
+}
+
+export interface Changelog {
+  features: ChangelogEntry[];
+  fixes: ChangelogEntry[];
+}
+
+export interface RawVersionMeta {
+  version: string;
+  target: string;
+  git_commit: string;
+  git_is_dirty: boolean;
+  git_date: string;
+  public_build: boolean;
+  development_mode: number;
+  actions: string;
+  settings: string;
+  changelog: string;
+  factory_defaults: {
+    layout: string;
+    settings: string;
+    chords: Record<string, string>;
+  };
+  update: {
+    ota: string | null;
+    uf2: string | null;
+    esptool: EspToolData | null;
+  };
+  files: string[];
+  spi_flash: SPIFlashInfo | null;
+}
+
+export interface VersionMeta {
+  version: string;
+  device: string;
+  path: string;
+  date: Date;
+  public: boolean;
+  commit?: string;
+  dirty: boolean;
+  developmentBuild: boolean;
+  actions: KeymapCategory[];
+  settings: SettingsMeta[];
+  changelog: Changelog;
+  factoryDefaults?: {
+    layout: CharaLayoutFile;
+    settings: CharaSettingsFile;
+    chords: Record<string, CharaChordFile>;
+  };
+  update: {
+    ota?: string;
+    uf2?: string;
+    esptool?: EspToolData;
+  };
+  spiFlash?: SPIFlashInfo;
+}
+
+export interface SPIFlashInfo {
+  type: string;
+  size: string;
+  connection: SPIConnection;
+}
+
+export interface SPIConnection {
+  clk: number;
+  q: number;
+  d: number;
+  hd: number;
+  cs: number;
+}
+
+export interface EspToolData {
+  chip: string;
+  baud: string;
+  before: string;
+  after: string;
+  flash_mode: string;
+  flash_freq: string;
+  flash_size: string;
+  files: Record<string, string>;
+}

src/lib/serial/chord.ts

@@ -69,5 +69,8 @@ export function hashChord(actions: number[]) {
   for (let i = 0; i < 16; i++) {
     hash = Math.imul(hash ^ view.getUint8(i), 16777619);
   }
+  if ((hash & 0xff) === 0xff) {
+    hash ^= 0xff;
+  }
   return hash & 0x3fff_ffff;
 }

src/lib/serial/connection.ts

@@ -5,7 +5,8 @@ import type { Writable } from "svelte/store";
 import type { CharaLayout } from "$lib/serialization/layout";
 import { persistentWritable } from "$lib/storage";
 import { userPreferences } from "$lib/preferences";
-import settingInfo from "$lib/assets/settings.yml";
+import { getMeta } from "$lib/meta/meta-storage";
+import type { VersionMeta } from "$lib/meta/types/meta";
 
 export const serialPort = writable<CharaDevice | undefined>();
 
@@ -28,25 +29,30 @@ export const deviceChords = persistentWritable<Chord[]>(
 /**
  * Layout as read from the device
  */
-export const deviceLayout = persistentWritable<CharaLayout>(
+export const deviceLayout = persistentWritable<CharaLayout[]>(
-  "layout",
+  "layout-profiles",
-  [[], [], []],
+  [],
   () => get(userPreferences).backup,
 );
 
 /**
  * Settings as read from the device
  */
-export const deviceSettings = persistentWritable<number[]>(
+export const deviceSettings = persistentWritable<number[][]>(
-  "device-settings",
+  "settings-profiles",
   [],
   () => get(userPreferences).backup,
 );
 
+export const activeProfile = persistentWritable<number>("active-profile", 0);
+export const activeLayer = persistentWritable<number>("active-profile", 0);
+
 export const syncStatus: Writable<
   "done" | "error" | "downloading" | "uploading"
 > = writable("done");
 
+export const deviceMeta = writable<VersionMeta | undefined>(undefined);
+
 export interface ProgressInfo {
   max: number;
   current: number;
@@ -65,36 +71,61 @@ export async function initSerial(manual = false, withSync = true) {
 export async function sync() {
   const device = get(serialPort);
   if (!device) return;
-  const chordCount = await device.getChordCount();
   syncStatus.set("downloading");
+  const meta = await getMeta(
+    `${device.device}_${device.chipset}`.toLowerCase(),
+    device.version.toString(),
+  );
+  deviceMeta.set(meta);
+  const chordCount = await device.getChordCount();
+
+  const maxSettings = meta.settings
+    .map((it) => it.items.length)
+    .reduce((a, b) => a + b, 0);
 
   const max =
-    Object.keys(settingInfo["settings"]).length +
+    (maxSettings + device.keyCount * device.layerCount) * device.profileCount +
-    device.keyCount * 3 +
     chordCount;
   let current = 0;
+  activeProfile.update((it) => Math.min(it, device.profileCount - 1));
+  activeLayer.update((it) => Math.min(it, device.layerCount - 1));
   syncProgress.set({ max, current });
   function progressTick() {
     current++;
     syncProgress.set({ max, current });
   }
 
-  const parsedSettings: number[] = [];
+  const parsedSettings: number[][] = Array.from(
-  for (const key in settingInfo["settings"]) {
+    { length: device.profileCount },
-    try {
+    () => [],
-      parsedSettings[Number.parseInt(key)] = await device.getSetting(
+  );
-        Number.parseInt(key),
+  for (const [profile, settings] of parsedSettings.entries()) {
-      );
+    for (const category of meta.settings) {
-    } catch {}
+      for (const setting of category.items) {
-    progressTick();
+        try {
+          settings[setting.id] = await device.getSetting(profile, setting.id);
+        } catch {}
+      }
+      progressTick();
+    }
   }
   deviceSettings.set(parsedSettings);
 
-  const parsedLayout: CharaLayout = [[], [], []];
+  const parsedLayout: CharaLayout[] = Array.from(
-  for (let layer = 1; layer <= 3; layer++) {
+    { length: device.profileCount },
-    for (let i = 0; i < device.keyCount; i++) {
+    () =>
-      parsedLayout[layer - 1]![i] = await device.getLayoutKey(layer, i);
+      Array.from({ length: device.layerCount }, () =>
-      progressTick();
+        Array.from({ length: device.keyCount }, () => 0),
+      ),
+  );
+  for (const [profile, layout] of parsedLayout.entries()) {
+    for (const [layer, keys] of layout.entries()) {
+      for (let i = 0; i < keys.length; i++) {
+        try {
+          keys[i] = await device.getLayoutKey(profile, layer + 1, i);
+        } catch {}
+        progressTick();
+      }
     }
   }
   deviceLayout.set(parsedLayout);

src/lib/serial/device.ts

@@ -1,7 +1,6 @@
 import { LineBreakTransformer } from "$lib/serial/line-break-transformer";
 import { serialLog } from "$lib/serial/connection";
 import type { Chord } from "$lib/serial/chord";
-import { SemVer } from "$lib/serial/sem-ver";
 import {
   parseChordActions,
   parsePhrase,
@@ -9,15 +8,18 @@ import {
   stringifyPhrase,
 } from "$lib/serial/chord";
 import { browser } from "$app/environment";
+import { showConnectionFailedDialog } from "$lib/dialogs/connection-failed-dialog";
+import semverGte from "semver/functions/gte";
 
 const PORT_FILTERS: Map<string, SerialPortFilter> = new Map([
   ["ONE M0", { usbProductId: 32783, usbVendorId: 9114 }],
-  ["TWO S3 (pre-production)", { usbProductId: 0x8252, usbVendorId: 0x303a }], // TODO: remove this after everyone has migrated
+  ["TWO S3 (pre-production)", { usbProductId: 0x8252, usbVendorId: 0x303a }],
   ["TWO S3", { usbProductId: 0x8253, usbVendorId: 0x303a }],
-  ["LITE S2", { usbProductId: 33070, usbVendorId: 12346 }],
+  ["LITE S2", { usbProductId: 0x812e, usbVendorId: 0x303a }],
   ["LITE M0", { usbProductId: 32796, usbVendorId: 9114 }],
-  ["X", { usbProductId: 33163, usbVendorId: 12346 }],
+  ["X", { usbProductId: 0x818b, usbVendorId: 0x303a }],
-  ["M4G S3", { usbProductId: 4097, usbVendorId: 12346 }],
+  ["M4G S3 (pre-production)", { usbProductId: 0x1001, usbVendorId: 0x303a }],
+  ["M4G S3", { usbProductId: 0x829a, usbVendorId: 0x303a }],
 ]);
 
 const KEY_COUNTS = {
@@ -27,6 +29,7 @@ const KEY_COUNTS = {
   X: 256,
   M4G: 90,
   M4GR: 90,
+  T4G: 7,
 } as const;
 
 if (
@@ -98,11 +101,13 @@ export class CharaDevice {
   private readonly suspendDebounce = 100;
   private suspendDebounceId?: number;
 
-  version!: SemVer;
+  version!: string;
   company!: "CHARACHORDER" | "FORGE";
   device!: "ONE" | "TWO" | "LITE" | "X" | "M4G";
   chipset!: "M0" | "S2" | "S3";
   keyCount!: 90 | 67 | 256;
+  layerCount = 3;
+  profileCount = 1;
 
   get portInfo() {
     return this.port.getInfo();
@@ -133,18 +138,20 @@ export class CharaDevice {
       });
       await this.port.close();
 
-      this.version = new SemVer(
+      this.version = await this.send(1, ["VERSION"]).then(
-        await this.send(1, "VERSION").then(([version]) => version),
+        ([version]) => version,
       );
-      const [company, device, chipset] = await this.send(3, "ID");
+      if (semverGte(this.version, "2.2.0-beta.4")) {
+        this.profileCount = 3;
+      }
+      const [company, device, chipset] = await this.send(3, ["ID"]);
       this.company = company as typeof this.company;
       this.device = device as typeof this.device;
       this.chipset = chipset as typeof this.chipset;
       this.keyCount = KEY_COUNTS[this.device];
     } catch (e) {
-      alert(e);
       console.error(e);
-      throw e;
+      await showConnectionFailedDialog(String(e));
     }
   }
 
@@ -185,9 +192,12 @@ export class CharaDevice {
     });
   }
 
-  private async internalRead() {
+  private async internalRead(timeoutMs: number | undefined) {
     try {
-      const { value } = await timeout(this.reader.read(), 5000);
+      const { value } =
+        timeoutMs !== undefined
+          ? await timeout(this.reader.read(), timeoutMs)
+          : await this.reader.read();
       serialLog.update((it) => {
         it.push({
           type: "output",
@@ -278,14 +288,15 @@ export class CharaDevice {
    */
   async send<T extends number>(
     expectedLength: T,
-    ...command: string[]
+    command: string[],
+    timeout: number | undefined = 5000,
   ): Promise<LengthArray<string, T>> {
     return this.runWith(async (send, read) => {
       await send(...command);
       const commandString = command
         .join(" ")
         .replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
-      const readResult = await read();
+      const readResult = await read(timeout);
       if (readResult === undefined) {
         console.error("No response");
         return Array(expectedLength).fill("NO_RESPONSE") as LengthArray<
@@ -307,7 +318,7 @@ export class CharaDevice {
   }
 
   async getChordCount(): Promise<number> {
-    const [count] = await this.send(1, "CML C0");
+    const [count] = await this.send(1, ["CML", "C0"]);
     return Number.parseInt(count);
   }
 
@@ -315,7 +326,11 @@ export class CharaDevice {
    * Retrieves a chord by index
    */
   async getChord(index: number | number[]): Promise<Chord> {
-    const [actions, phrase] = await this.send(2, `CML C1 ${index}`);
+    const [actions, phrase] = await this.send(2, [
+      "CML",
+      "C1",
+      index.toString(),
+    ]);
     return {
       actions: parseChordActions(actions),
       phrase: parsePhrase(phrase),
@@ -326,29 +341,30 @@ export class CharaDevice {
    * Retrieves the phrase for a set of actions
    */
   async getChordPhrase(actions: number[]): Promise<number[] | undefined> {
-    const [phrase] = await this.send(
+    const [phrase] = await this.send(1, [
-      1,
+      "CML",
-      `CML C2 ${stringifyChordActions(actions)}`,
+      "C2",
-    );
+      stringifyChordActions(actions),
+    ]);
     return phrase === "2" ? undefined : parsePhrase(phrase);
   }
 
   async setChord(chord: Chord) {
-    const [status] = await this.send(
+    const [status] = await this.send(1, [
-      1,
       "CML",
       "C3",
       stringifyChordActions(chord.actions),
       stringifyPhrase(chord.phrase),
-    );
+    ]);
     if (status !== "0") console.error(`Failed with status ${status}`);
   }
 
   async deleteChord(chord: Pick<Chord, "actions">) {
-    const status = await this.send(
+    const status = await this.send(1, [
-      1,
+      "CML",
-      `CML C4 ${stringifyChordActions(chord.actions)}`,
+      "C4",
-    );
+      stringifyChordActions(chord.actions),
+    ]);
     if (status?.at(-1) !== "2" && status?.at(-1) !== "0")
       throw new Error(`Failed with status ${status}`);
   }
@@ -359,8 +375,19 @@ export class CharaDevice {
    * @param id id of the key, refer to the individual device for where each key is
    * @param action the assigned action id
    */
-  async setLayoutKey(layer: number, id: number, action: number) {
+  async setLayoutKey(
-    const [status] = await this.send(1, `VAR B4 A${layer} ${id} ${action}`);
+    profile: number,
+    layer: number,
+    id: number,
+    action: number,
+  ) {
+    const [status] = await this.send(1, [
+      "VAR",
+      "B4",
+      `${String.fromCodePoint("A".codePointAt(0)! + profile)}${layer}`,
+      id.toString(),
+      action.toString(),
+    ]);
     if (status !== "0") throw new Error(`Failed with status ${status}`);
   }
 
@@ -370,8 +397,13 @@ export class CharaDevice {
    * @param id id of the key, refer to the individual device for where each key is
    * @returns the assigned action id
    */
-  async getLayoutKey(layer: number, id: number) {
+  async getLayoutKey(profile: number, layer: number, id: number) {
-    const [position, status] = await this.send(2, `VAR B3 A${layer} ${id}`);
+    const [position, status] = await this.send(2, [
+      "VAR",
+      "B3",
+      `${String.fromCodePoint("A".codePointAt(0)! + profile)}${layer}`,
+      id.toString(),
+    ]);
     if (status !== "0") throw new Error(`Failed with status ${status}`);
     return Number(position);
   }
@@ -384,7 +416,7 @@ export class CharaDevice {
    * **This does not need to be called for chords**
    */
   async commit() {
-    const [status] = await this.send(1, "VAR B0");
+    const [status] = await this.send(1, ["VAR", "B0"]);
     if (status !== "0") throw new Error(`Failed with status ${status}`);
   }
 
@@ -394,22 +426,25 @@ export class CharaDevice {
    * Settings are applied until the next reboot or loss of power.
    * To permanently store the settings, you *must* call commit.
    */
-  async setSetting(id: number, value: number) {
+  async setSetting(profile: number, id: number, value: number) {
-    const [status] = await this.send(
+    const [status] = await this.send(1, [
-      1,
+      "VAR",
-      `VAR B2 ${id.toString(16).toUpperCase()} ${value}`,
+      "B2",
-    );
+      (id + profile * 0x100).toString(16).toUpperCase(),
+      value.toString(),
+    ]);
     if (status !== "0") throw new Error(`Failed with status ${status}`);
   }
 
   /**
    * Retrieves a setting from the device
    */
-  async getSetting(id: number): Promise<number> {
+  async getSetting(profile: number, id: number): Promise<number> {
-    const [value, status] = await this.send(
+    const [value, status] = await this.send(2, [
-      2,
+      "VAR",
-      `VAR B1 ${id.toString(16).toUpperCase()}`,
+      "B1",
-    );
+      (id + profile * 0x100).toString(16).toUpperCase(),
+    ]);
     if (status !== "0")
       throw new Error(
         `Setting "0x${id.toString(16)}" doesn't exist (Status code ${status})`,
@@ -421,14 +456,14 @@ export class CharaDevice {
    * Reboots the device
    */
   async reboot() {
-    await this.send(0, "RST");
+    await this.send(0, ["RST"]);
   }
 
   /**
    * Reboots the device to the bootloader
    */
   async bootloader() {
-    await this.send(0, "RST BOOTLOADER");
+    await this.send(0, ["RST", "BOOTLOADER"]);
   }
 
   /**
@@ -437,7 +472,12 @@ export class CharaDevice {
   async reset(
     type: "FACTORY" | "PARAMS" | "KEYMAPS" | "STARTER" | "CLEARCML" | "FUNC",
   ) {
-    await this.send(0, `RST ${type}`);
+    await this.send(0, ["RST", type]);
+  }
+
+  async queryKey(): Promise<number> {
+    const [value] = await this.send(1, ["QRY", "KEY"], undefined);
+    return Number(value);
   }
 
   /**
@@ -446,13 +486,17 @@ export class CharaDevice {
    * This is useful for debugging when there is a suspected heap or stack issue.
    */
   async getRamBytesAvailable(): Promise<number> {
-    return Number(await this.send(1, "RAM").then(([bytes]) => bytes));
+    return Number(await this.send(1, ["RAM"]).then(([bytes]) => bytes));
   }
 
-  async updateFirmware(file: File | Blob): Promise<void> {
+  async updateFirmware(
+    file: ArrayBuffer,
+    progress: (transferred: number, total: number) => void,
+  ): Promise<void> {
     while (this.lock) {
       await this.lock;
     }
+
     let resolveLock: (result: true) => void;
     this.lock = new Promise<true>((resolve) => {
       resolveLock = resolve;
@@ -482,46 +526,46 @@ export class CharaDevice {
           });
           return it;
         });
-      } finally {
-        writer.releaseLock();
-      }
 
-      // Wait for the device to be ready
+        // Wait for the device to be ready
-      const signal = await this.reader.read();
+        const signal = await this.reader.read();
-      serialLog.update((it) => {
+        serialLog.update((it) => {
-        it.push({
+          it.push({
-          type: "output",
+            type: "output",
-          value: signal.value!.trim(),
+            value: signal.value!.trim(),
+          });
+          return it;
         });
-        return it;
-      });
 
-      await file.stream().pipeTo(this.port.writable!);
+        const chunkSize = 128;
+        for (let i = 0; i < file.byteLength; i += chunkSize) {
+          const chunk = file.slice(i, i + chunkSize);
+          await writer.write(new Uint8Array(chunk));
+          progress(i + chunk.byteLength, file.byteLength);
+        }
 
-      serialLog.update((it) => {
+        serialLog.update((it) => {
-        it.push({
+          it.push({
-          type: "input",
+            type: "input",
-          value: `...${file.size} bytes`,
+            value: `...${file.byteLength} bytes`,
+          });
+          return it;
         });
-        return it;
-      });
 
-      const result = (await this.reader.read()).value!.trim();
+        const result = (await this.reader.read()).value!.trim();
-      serialLog.update((it) => {
+        serialLog.update((it) => {
-        it.push({
+          it.push({
-          type: "output",
+            type: "output",
-          value: result!,
+            value: result!,
+          });
+          return it;
         });
-        return it;
-      });
 
-      if (result !== "OTA OK") {
+        if (result !== "OTA OK") {
-        throw new Error(result);
+          throw new Error(result);
-      }
+        }
 
-      const writer2 = this.port.writable!.getWriter();
+        await writer.write(new TextEncoder().encode(`RST RESTART\r\n`));
-      try {
-        await writer2.write(new TextEncoder().encode(`RST RESTART\r\n`));
         serialLog.update((it) => {
           it.push({
             type: "input",
@@ -530,7 +574,7 @@ export class CharaDevice {
           return it;
         });
       } finally {
-        writer2.releaseLock();
+        writer.releaseLock();
       }
 
       await this.suspend();

src/lib/serial/keymap-codes.ts

@@ -1,38 +1,64 @@
 import type { ActionInfo, KeymapCategory } from "$lib/assets/keymaps/keymap";
+import { derived, type Readable } from "svelte/store";
+import { deviceMeta } from "./connection";
 
 export interface KeyInfo extends Partial<ActionInfo> {
   code: number;
   category?: KeymapCategory;
 }
 
-export const KEYMAP_CATEGORIES = (await Promise.all(
+const fallbackActions = await Promise.all<KeymapCategory>(
   Object.values(import.meta.glob("$lib/assets/keymaps/*.yml")).map(
     async (load) => load().then((it) => (it as any).default),
   ),
-)) as KeymapCategory[];
-
-export const KEYMAP_CODES = new Map<number, KeyInfo>(
-  KEYMAP_CATEGORIES.flatMap((category) =>
-    Object.entries(category.actions).map(([code, action]) => [
-      Number(code),
-      { ...action, code: Number(code), category },
-    ]),
-  ),
 );
 
-export const KEYMAP_KEYCODES = new Map<string, number>(
+export let KEYMAP_CATEGORIES: Readable<KeymapCategory[]> = derived(
-  KEYMAP_CATEGORIES.flatMap((category) =>
+  deviceMeta,
-    Object.entries(category.actions).map(
+  (deviceMeta) => deviceMeta?.actions ?? fallbackActions,
-      ([code, action]) => [action.keyCode!, Number(code)] as const,
+);
+
+export const KEYMAP_CODES: Readable<Map<number, KeyInfo>> = derived(
+  KEYMAP_CATEGORIES,
+  (categories) =>
+    new Map<number, KeyInfo>(
+      categories.flatMap((category) =>
+        Object.entries(category.actions).map(([code, action]) => [
+          Number(code),
+          { ...action, code: Number(code), category },
+        ]),
+      ),
     ),
-  ).filter(([keyCode]) => keyCode !== undefined),
 );
 
-export const KEYMAP_IDS = new Map<string, KeyInfo>(
+export const KEYMAP_KEYCODES: Readable<Map<string, number>> = derived(
-  KEYMAP_CATEGORIES.flatMap((category) =>
+  KEYMAP_CATEGORIES,
-    Object.entries(category.actions).map(
+  (categories) =>
-      ([code, action]) =>
+    new Map<string, number>(
-        [action.id!, { ...action, code: Number(code), category }] as const,
+      categories
+        .flatMap((category) =>
+          Object.entries(category.actions).map(
+            ([code, action]) => [action.keyCode!, Number(code)] as const,
+          ),
+        )
+        .filter(([keyCode]) => keyCode !== undefined),
+    ),
+);
+
+export const KEYMAP_IDS: Readable<Map<string, KeyInfo>> = derived(
+  KEYMAP_CATEGORIES,
+  (categories) =>
+    new Map<string, KeyInfo>(
+      categories
+        .flatMap((category) =>
+          Object.entries(category.actions).map(
+            ([code, action]) =>
+              [
+                action.id!,
+                { ...action, code: Number(code), category },
+              ] as const,
+          ),
+        )
+        .filter(([id]) => id !== undefined),
     ),
-  ).filter(([id]) => id !== undefined),
 );

src/lib/serial/sem-ver.ts

@@ -1,32 +0,0 @@
-export class SemVer {
-  major = 0;
-  minor = 0;
-  patch = 0;
-  preRelease?: string;
-  meta?: string;
-
-  constructor(versionString: string) {
-    const result =
-      /^([0-9]+)\.([0-9]+)\.([0-9]+)(?:-([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?(?:\+([0-9A-Za-z-]+))?$/.exec(
-        versionString,
-      );
-    if (!result) {
-      console.error("Invalid version string:", versionString);
-    } else {
-      const [, major, minor, patch, preRelease, meta] = result;
-      this.major = Number.parseInt(major ?? "NaN");
-      this.minor = Number.parseInt(minor ?? "NaN");
-      this.patch = Number.parseInt(patch ?? "NaN");
-      if (preRelease) this.preRelease = preRelease;
-      if (meta) this.meta = meta;
-    }
-  }
-
-  toString() {
-    return (
-      `${this.major}.${this.minor}.${this.patch}` +
-      (this.preRelease ? `-${this.preRelease}` : "") +
-      (this.meta ? `+${this.meta}` : "")
-    );
-  }
-}

src/lib/serialization/layout.ts

@@ -4,13 +4,10 @@ import { fromBase64, toBase64 } from "$lib/serialization/base64";
 export interface NewCharaLayout {
   charaLayoutVersion: 1;
   device: "one" | "lite" | string;
-  /**
+  layers: number[][];
-   * Layers A1-A3, with numeric action codes on each
-   */
-  layers: [number[], number[], number[]];
 }
 
-export type CharaLayout = [number[], number[], number[]];
+export type CharaLayout = number[][];
 
 /**
  * Serialize a layout into a micro package

src/lib/setting.ts

@@ -1,5 +1,88 @@
 import type { Action } from "svelte/action";
 import { changes, ChangeType, settings } from "$lib/undo-redo";
+import { activeProfile } from "./serial/connection";
+import { combineLatest, map } from "rxjs";
+import { fromReadable } from "./util/from-readable";
+import { get } from "svelte/store";
+
+/**
+ * https://gist.github.com/mjackson/5311256
+ */
+function rgbToHsv(r: number, g: number, b: number): [number, number, number] {
+  r /= 255;
+  g /= 255;
+  b /= 255;
+
+  const max = Math.max(r, g, b);
+  const min = Math.min(r, g, b);
+  let h = 0;
+  const v = max;
+
+  const d = max - min;
+  const s = max == 0 ? 0 : d / max;
+
+  if (max == min) {
+    h = 0; // achromatic
+  } else {
+    switch (max) {
+      case r:
+        h = (g - b) / d + (g < b ? 6 : 0);
+        break;
+      case g:
+        h = (b - r) / d + 2;
+        break;
+      case b:
+        h = (r - g) / d + 4;
+        break;
+    }
+
+    h /= 6;
+  }
+
+  return [Math.floor(h * 0xffff), Math.floor(s * 0xff), Math.floor(v * 0xff)];
+}
+
+/**
+ * https://gist.github.com/mjackson/5311256
+ */
+function hsvToRgb(h: number, s: number, v: number): [number, number, number] {
+  h /= 0xffff;
+  s /= 0xff;
+  v /= 0xff;
+
+  let r = 0;
+  let g = 0;
+  let b = 0;
+
+  const i = Math.floor(h * 6);
+  const f = h * 6 - i;
+  const p = v * (1 - s);
+  const q = v * (1 - f * s);
+  const t = v * (1 - (1 - f) * s);
+
+  switch (i % 6) {
+    case 0:
+      ((r = v), (g = t), (b = p));
+      break;
+    case 1:
+      ((r = q), (g = v), (b = p));
+      break;
+    case 2:
+      ((r = p), (g = v), (b = t));
+      break;
+    case 3:
+      ((r = p), (g = q), (b = v));
+      break;
+    case 4:
+      ((r = t), (g = p), (b = v));
+      break;
+    case 5:
+      ((r = v), (g = p), (b = q));
+      break;
+  }
+
+  return [Math.floor(r * 0xff), Math.floor(g * 0xff), Math.floor(b * 0xff)];
+}
 
 export const setting: Action<
   HTMLInputElement | HTMLSelectElement,
@@ -9,7 +92,12 @@ export const setting: Action<
   { id, inverse, scale },
 ) {
   node.setAttribute("disabled", "");
-  const type = node.getAttribute("type") as "number" | "checkbox" | "range";
+  const type = node.getAttribute("type") as
+    | "number"
+    | "checkbox"
+    | "range"
+    | "color";
+  const isColor = type === "color";
   const isNumeric =
     type === "number" || type === "range" || node instanceof HTMLSelectElement;
   const min = node.hasAttribute("min")
@@ -19,36 +107,50 @@ export const setting: Action<
     ? Number(node.getAttribute("max"))
     : undefined;
 
-  const unsubscribe = settings.subscribe(async (settings) => {
+  const subscription = combineLatest([
-    if (id in settings) {
+    fromReadable(settings),
-      const { value, isApplied } = settings[id]!;
+    fromReadable(activeProfile),
-      if (isNumeric) {
+  ])
-        node.value = (
+    .pipe(map(([settings, profile]) => settings[profile]!))
-          inverse !== undefined
+    .subscribe(async (settings) => {
-            ? inverse / value
+      if (id in settings) {
-            : scale !== undefined
+        const { value, isApplied } = settings[id]!;
-              ? scale * value
+        if (isNumeric) {
-              : value
+          node.value = (
-        ).toString();
+            inverse !== undefined
+              ? inverse / value
+              : scale !== undefined
+                ? scale * value
+                : value
+          ).toString();
+        } else if (isColor) {
+          const rgb = hsvToRgb(
+            settings[id]!.value,
+            settings[id + 1]!.value,
+            settings[id + 2]!.value,
+          );
+          node.value = `#${rgb.map((c) => c.toString(16).padStart(2, "0")).join("")}`;
+        } else {
+          node.checked = value !== 0;
+        }
+        if (isApplied) {
+          node.classList.remove("pending-changes");
+        } else {
+          node.classList.add("pending-changes");
+        }
+        node.removeAttribute("disabled");
       } else {
-        node.checked = value !== 0;
+        node.setAttribute("disabled", "");
       }
-      if (isApplied) {
+    });
-        node.classList.remove("pending-changes");
-      } else {
-        node.classList.add("pending-changes");
-      }
-      node.removeAttribute("disabled");
-    } else {
-      node.setAttribute("disabled", "");
-    }
-  });
 
   async function listener() {
     let value: number;
     if (isNumeric) {
       value = Number(node.value);
       if (Number.isNaN(value)) return;
+      if (min !== undefined) value = Math.max(min, value);
+      if (max !== undefined) value = Math.min(max, value);
       value = Math.floor(
         inverse !== undefined
           ? inverse / value
@@ -56,18 +158,36 @@ export const setting: Action<
             ? value / scale
             : value,
       );
-      if (min !== undefined) value = Math.max(min, value);
+    } else if (isColor) {
-      if (max !== undefined) value = Math.min(max, value);
+      const r = parseInt(node.value.slice(1, 3), 16);
+      const g = parseInt(node.value.slice(3, 5), 16);
+      const b = parseInt(node.value.slice(5, 7), 16);
+      const hsv = rgbToHsv(r, g, b);
+      changes.update((changes) => {
+        changes.push(
+          hsv.map((value, i) => ({
+            type: ChangeType.Setting,
+            id: id + i,
+            setting: value,
+            profile: get(activeProfile),
+          })),
+        );
+        return changes;
+      });
+      return;
     } else {
       value = node.checked ? 1 : 0;
     }
 
     changes.update((changes) => {
-      changes.push({
+      changes.push([
-        type: ChangeType.Setting,
+        {
-        id: id,
+          type: ChangeType.Setting,
-        setting: value,
+          id: id,
-      });
+          setting: value,
+          profile: get(activeProfile),
+        },
+      ]);
       return changes;
     });
   }
@@ -77,7 +197,7 @@ export const setting: Action<
   return {
     destroy() {
       node.removeEventListener("change", listener);
-      unsubscribe();
+      subscription.unsubscribe();
     },
   };
 };

src/lib/storage.ts

@@ -17,7 +17,6 @@ export function persistentWritable<T>(
           : writable(value);
     } catch (e) {
       console.error(e);
-    } finally {
       store = writable(value);
     }
     store.subscribe((value) => {

src/lib/style/_kbd.scss

@@ -1,18 +1,18 @@
 kbd {
   display: inline-flex;
-  align-items: center;
   justify-content: center;
-
+  align-items: center;
-  height: 20px;
   margin-block: 6px;
-  padding: 4px;
-
-  font-size: 14px;
-  font-weight: normal;
-  color: currentcolor;
 
   border: 1px solid currentcolor;
   border-radius: 4px;
+  padding: 4px;
+
+  height: 20px;
+  color: currentcolor;
+  font-weight: normal;
+
+  font-size: 14px;
 
   &.icon {
     padding: 2px;
@@ -21,8 +21,8 @@ kbd {
 
   &:has(> kbd) {
     gap: 4px;
-    padding: 0;
     border: none;
+    padding: 0;
   }
 
   > kbd {

src/lib/style/_reset.scss

@@ -1,4 +1,4 @@
 * {
-  box-sizing: border-box;
   appearance: none;
+  box-sizing: border-box;
 }

src/lib/style/elements/_h1.scss

@@ -1,6 +1,6 @@
 h1 {
   margin-block-start: 0;
-  font-size: 4rem;
-  font-weight: 700;
   color: var(--md-sys-color-secondary);
+  font-weight: 700;
+  font-size: 4rem;
 }

src/lib/style/elements/_popover.scss

@@ -0,0 +1,67 @@
+$animation-duration: 150ms;
+$translate: translateY(8px);
+
+[popover] {
+  position: absolute;
+
+  opacity: 0;
+
+  transition:
+    transform $animation-duration ease,
+    opacity $animation-duration linear,
+    overlay $animation-duration allow-discrete,
+    display $animation-duration allow-discrete;
+
+  margin: 0;
+  inset: unset;
+  border: 1px solid var(--md-sys-color-outline);
+  border-radius: 8px;
+  background: var(--md-sys-color-surface);
+  padding: 8px;
+  color: var(--md-sys-color-on-surface);
+  font-weight: initial;
+  font-size: initial;
+
+  font-family: "Noto Sans Mono", monospace;
+
+  position-area: bottom span-all;
+  position-try-fallbacks:
+    top span-all,
+    bottom span-right,
+    top span-right,
+    bottom span-left,
+    top span-left;
+
+  position-visibility: no-overflow;
+
+  &:popover-open {
+    transform: translateY(0);
+    opacity: 1;
+  }
+
+  > h1:first-child,
+  h2:first-child,
+  h3:first-child {
+    margin-top: 0;
+    text-align: center;
+  }
+}
+
+[popover="auto"] {
+  transform: $translate;
+}
+
+[popover="hint"] {
+  margin-top: 0.5rem;
+  font-size: 0.9rem;
+}
+
+@starting-style {
+  [popover]:popover-open {
+    opacity: 0;
+  }
+
+  [popover="auto"] {
+    transform: $translate;
+  }
+}

src/lib/style/form/_button.scss

@@ -5,29 +5,30 @@ a {
 a,
 label:has(input),
 button {
-  cursor: pointer;
-
   display: flex;
-  gap: 4px;
-  align-items: center;
   justify-content: center;
+  align-items: center;
+  gap: 4px;
+  transition: all 250ms ease;
+  cursor: pointer;
+  border-radius: 32px;
+  padding-inline: 16px;
+  padding-block: 8px;
 
   width: max-content;
   height: 48px;
-  padding-block: 8px;
-  padding-inline: 16px;
-
-  font-family: inherit;
   font-weight: 600;
 
+  font-family: inherit;
+
   @media not (forced-colors: active) {
-    color: currentcolor;
-    background: transparent;
     border: none;
+    background: transparent;
+    color: currentcolor;
 
     &.primary {
-      color: var(--md-sys-color-on-primary);
       background: var(--md-sys-color-primary);
+      color: var(--md-sys-color-on-primary);
     }
   }
 
@@ -36,24 +37,19 @@ button {
     color: ButtonText;
   }
 
-  border-radius: 32px;
-
-  transition: all 250ms ease;
-
   &.icon {
     display: inline-flex;
+    border-radius: 50%;
+    padding-inline: 0;
+    padding-block: 0;
 
     aspect-ratio: 1;
-    padding-block: 0;
-    padding-inline: 0;
 
     font-size: 24px;
 
-    border-radius: 50%;
-
     @media (forced-colors: active) {
-      padding: 2px;
       margin: 2px;
+      padding: 2px;
     }
   }
 
@@ -91,8 +87,8 @@ button {
     }
     &.active,
     &:active {
-      color: SelectedItemText;
       background: SelectedItem;
+      color: SelectedItemText;
     }
   }
 }

src/lib/style/form/_radio.scss

@@ -0,0 +1,35 @@
+label:has(input[type="radio"]) {
+  z-index: 1;
+
+  transition: all 250ms ease;
+  cursor: pointer;
+  border: none;
+  border-radius: 0;
+
+  background: var(--md-sys-color-surface-variant);
+  padding-inline: 12px;
+
+  aspect-ratio: unset;
+  height: 1.5em;
+  color: var(--md-sys-color-on-surface-variant);
+
+  font-size: 16px;
+
+  > input[type="radio"] {
+    display: none;
+  }
+
+  &:first-child {
+    border-radius: 16px 0 0 16px;
+  }
+
+  &:last-child {
+    border-radius: 0 16px 16px 0;
+  }
+
+  &:has(:checked) {
+    background: var(--md-sys-color-tertiary);
+    color: var(--md-sys-color-on-tertiary);
+    font-weight: 900;
+  }
+}

src/lib/style/form/_toggle.scss

@@ -3,57 +3,55 @@ $border: 2px;
 $height: 1.5em;
 
 label:has(input[type="checkbox"]) {
-  cursor: pointer;
-  user-select: none;
-
   display: flex;
-  gap: $padding;
-  align-items: center;
   justify-content: center;
+  align-items: center;
+  gap: $padding;
+  cursor: pointer;
 
   font-size: 12px;
+  user-select: none;
 
   input[type="checkbox"] {
     $width: calc($height * (5 / 3));
     $diameter: calc($height - ((2 * $padding) + (2 * $border)));
     $radius: calc($diameter / 2);
-
+    display: flex;
-    cursor: pointer;
 
     position: relative;
 
-    overflow: hidden;
+    cursor: pointer;
-    display: flex;
+
+    outline: $border solid currentcolor;
+    outline-offset: calc(-1 * $border);
+    border-radius: calc($height / 2);
 
     width: $width;
     height: $height;
 
-    font-size: inherit;
+    overflow: hidden;
     color: inherit;
 
-    border-radius: calc($height / 2);
+    font-size: inherit;
-    outline: $border solid currentcolor;
-    outline-offset: calc(-1 * $border);
 
     &::after {
-      content: "";
+      display: block;
 
       position: absolute;
       top: calc($padding + $border);
       left: calc($padding + $border);
 
-      display: block;
+      transition: all 250ms ease;
 
-      width: $diameter;
-      height: $diameter;
-
-      border-radius: calc($radius);
       outline-color: inherit;
       outline-style: solid;
       outline-width: $radius;
       outline-offset: calc(-1 * $radius);
+      border-radius: calc($radius);
 
-      transition: all 250ms ease;
+      width: $diameter;
+      height: $diameter;
+      content: "";
     }
 
     &:checked::after {
@@ -62,4 +60,83 @@ label:has(input[type="checkbox"]) {
       outline-offset: calc($padding / 2);
     }
   }
+
+  &:has(span.icon) {
+    $line-width: 10%;
+    $side: calc(($line-width * 2) / sqrt(2));
+    $mid: calc($side / 2);
+
+    > input[type="checkbox"] {
+      display: none;
+    }
+
+    > span.icon {
+      display: block;
+      position: relative;
+
+      clip-path: polygon(
+        0% $side,
+        $mid $mid,
+        calc(100% - $mid) calc(100% - $mid),
+        calc(100% - $side) 100%,
+        0% 100%,
+        0% $side,
+        $side 0%,
+        100% calc(100% - $side),
+        calc(100% - $side) 100%,
+        calc(100% - $side) 100%,
+        100% calc(100% - $side),
+        100% calc(100% - $side),
+        100% 0%,
+        $side 0%
+      );
+
+      transition: all 250ms ease;
+
+      width: 1em;
+      height: 1em;
+
+      font-size: inherit;
+
+      &::before {
+        display: block;
+
+        position: absolute;
+        top: 50%;
+        left: 50%;
+        transform: translate(-50%, 0) rotate(45deg);
+
+        transition: all 250ms ease;
+
+        background-color: currentcolor;
+
+        width: calc(100% * sqrt(2));
+        height: $line-width;
+        content: "";
+      }
+    }
+
+    &:has(:checked) > span.icon {
+      clip-path: polygon(
+        0% $side,
+        $mid $mid,
+        calc(100% - $mid) calc(100% - $mid),
+        calc(100% - $side) 100%,
+        0% 100%,
+        0% $side,
+        $side 0%,
+        100% calc(100% - $side),
+        calc(100% - $side) 100%,
+        0% $side,
+        $side 0%,
+        100% calc(100% - $side),
+        100% 0%,
+        $side 0%
+      );
+
+      &::before {
+        transform: translate(-50%, 0) rotate(45deg) translateX(-100%);
+      }
+    }
+  }
 }

src/lib/style/scrollbar.scss

@@ -1,14 +1,14 @@
 @media not (forced-colors: active) {
   ::-webkit-scrollbar {
-    width: 8px;
-    background: transparent;
     border-radius: 4px;
+    background: transparent;
+    width: 8px;
   }
 
   ::-webkit-scrollbar-thumb {
-    background: var(--scrollbar-color, white);
-    border-radius: 4px;
     transition: all 250ms ease;
+    border-radius: 4px;
+    background: var(--scrollbar-color, white);
 
     &:hover {
       filter: brightness(120%);

src/lib/style/theme.scss

@@ -1,35 +1,36 @@
-@import "./reset";
+@use "reset";
 
-@import "./form/button";
+@use "form/button";
-@import "./form/toggle";
+@use "form/toggle";
-@import "./form/checkbox";
+@use "form/radio";
 
-@import "./kbd";
+@use "kbd";
-@import "./print";
+@use "print";
 
-@import "./elements/h1";
+@use "elements/h1";
+@use "elements/popover";
 
 body {
-  overflow: hidden;
   display: flex;
   flex-direction: column;
+  margin: 0;
+
+  background: var(--md-sys-color-background);
 
   width: 100vw;
   height: 100vh;
-  margin: 0;
+  overflow: hidden;
-
-  font-family: "Noto Sans Mono", monospace;
   color: var(--md-sys-color-on-background);
 
-  background: var(--md-sys-color-background);
+  font-family: "Noto Sans Mono", monospace;
 }
 
 main {
-  contain: strict;
   display: flex;
-  flex-direction: column;
   flex-grow: 1;
+  flex-direction: column;
   align-items: center;
+  contain: strict;
 
   padding-inline: 16px;
 }

src/lib/style/tippy.scss

@@ -1,10 +1,10 @@
 $padding: 16px;
 
 .tippy-box[data-theme~="surface-variant"] {
-  color: var(--md-sys-color-on-surface-variant);
-  background-color: var(--md-sys-color-surface-variant);
   filter: drop-shadow(0 0 12px #000a);
   border-radius: calc(24px + $padding);
+  background-color: var(--md-sys-color-surface-variant);
+  color: var(--md-sys-color-on-surface-variant);
 
   .tippy-content {
     padding: $padding;
@@ -24,10 +24,10 @@ $padding: 16px;
   }
 
   @media (forced-colors: active) {
-    color: CanvasText;
-    background-color: Canvas;
     filter: none;
     border: 1px solid CanvasText;
+    background-color: Canvas;
+    color: CanvasText;
 
     > .tippy-arrow {
       display: none;
@@ -36,16 +36,16 @@ $padding: 16px;
 }
 
 .tippy-box[data-theme~="tooltip"] {
-  color: var(--md-sys-color-on-background);
-  background-color: var(--md-sys-color-background);
   border: 1px solid var(--md-sys-color-outline);
   border-radius: 8px;
+  background-color: var(--md-sys-color-background);
+  color: var(--md-sys-color-on-background);
 }
 
 .tippy-box[data-theme~="search-completion"] {
-  overflow: hidden;
   filter: none;
   border-radius: 0 0 16px 16px;
+  overflow: hidden;
 
   .tippy-content {
     padding: 0;

src/lib/title.ts

@@ -5,6 +5,9 @@ import Tooltip from "$lib/components/Tooltip.svelte";
 
 export const hotkeys = new Map<string, HTMLElement>();
 
+/**
+ * @deprecated Use `tooltip` instead.
+ */
 export const action: Action<Element, { title?: string; shortcut?: string }> = (
   node: Element,
   { title, shortcut },

src/lib/undo-redo.ts

@@ -19,6 +19,7 @@ export interface LayoutChange {
   id: number;
   layer: number;
   action: number;
+  profile?: number;
 }
 
 export interface ChordChange {
@@ -33,6 +34,7 @@ export interface SettingChange {
   type: ChangeType.Setting;
   id: number;
   setting: number;
+  profile?: number;
 }
 
 export interface ChangeInfo {
@@ -42,36 +44,46 @@ export interface ChangeInfo {
 
 export type Change = LayoutChange | ChordChange | SettingChange;
 
-export const changes = persistentWritable<Change[]>("changes", []);
+export const changes = persistentWritable<Change[][]>("changes", []);
 
 export interface Overlay {
-  layout: [Map<number, number>, Map<number, number>, Map<number, number>];
+  layout: Array<Array<Map<number, number> | undefined> | undefined>;
   chords: Map<string, Chord & { deleted: boolean }>;
-  settings: Map<number, number>;
+  settings: Array<Map<number, number> | undefined>;
 }
 
 export const overlay = derived(changes, (changes) => {
   const overlay: Overlay = {
-    layout: [new Map(), new Map(), new Map()],
+    layout: [],
     chords: new Map(),
-    settings: new Map(),
+    settings: [],
   };
 
-  for (const change of changes) {
+  for (const changeset of changes) {
-    switch (change.type) {
+    for (const change of changeset) {
-      case ChangeType.Layout:
+      switch (change.type) {
-        overlay.layout[change.layer]?.set(change.id, change.action);
+        case ChangeType.Layout:
-        break;
+          change.profile ??= 0;
-      case ChangeType.Chord:
+          overlay.layout[change.profile] ??= [];
-        overlay.chords.set(JSON.stringify(change.id), {
+          overlay.layout[change.profile]![change.layer] ??= new Map();
-          actions: change.actions,
+          overlay.layout[change.profile]![change.layer]!.set(
-          phrase: change.phrase,
+            change.id,
-          deleted: change.deleted ?? false,
+            change.action,
-        });
+          );
-        break;
+          break;
-      case ChangeType.Setting:
+        case ChangeType.Chord:
-        overlay.settings.set(change.id, change.setting);
+          overlay.chords.set(JSON.stringify(change.id), {
-        break;
+            actions: change.actions,
+            phrase: change.phrase,
+            deleted: change.deleted ?? false,
+          });
+          break;
+        case ChangeType.Setting:
+          change.profile ??= 0;
+          overlay.settings[change.profile] ??= new Map();
+          overlay.settings[change.profile]!.set(change.id, change.setting);
+          break;
+      }
     }
   }
 
@@ -80,21 +92,25 @@ export const overlay = derived(changes, (changes) => {
 
 export const settings = derived(
   [overlay, deviceSettings],
-  ([overlay, settings]) =>
+  ([overlay, profiles]) =>
-    settings.map<{ value: number } & ChangeInfo>((value, id) => ({
+    profiles.map((settings, profile) =>
-      value: overlay.settings.get(id) ?? value,
+      settings.map<{ value: number } & ChangeInfo>((value, id) => ({
-      isApplied: !overlay.settings.has(id),
+        value: overlay.settings[profile]?.get(id) ?? value,
-    })),
+        isApplied: !overlay.settings[profile]?.has(id),
+      })),
+    ),
 );
 
 export type KeyInfo = { action: number } & ChangeInfo;
-export const layout = derived([overlay, deviceLayout], ([overlay, layout]) =>
+export const layout = derived([overlay, deviceLayout], ([overlay, profiles]) =>
-  layout.map(
+  profiles.map((layout, profile) =>
-    (actions, layer) =>
+    layout.map(
-      actions.map<KeyInfo>((action, id) => ({
+      (actions, layer) =>
-        action: overlay.layout[layer]?.get(id) ?? action,
+        actions.map<KeyInfo>((action, id) => ({
-        isApplied: !overlay.layout[layer]?.has(id),
+          action: overlay.layout[profile]?.[layer]?.get(id) ?? action,
-      })) as [KeyInfo, KeyInfo, KeyInfo],
+          isApplied: !overlay.layout[profile]?.[layer]?.has(id),
+        })) as [KeyInfo, KeyInfo, KeyInfo],
+    ),
   ),
 );
 
@@ -107,57 +123,61 @@ export type ChordInfo = Chord &
     id: number[];
     deleted: boolean;
   };
-export const chords = derived([overlay, deviceChords], ([overlay, chords]) => {
+export const chords = derived(
-  const newChords = new Set(overlay.chords.keys());
+  [overlay, deviceChords, KEYMAP_CODES],
+  ([overlay, chords, codes]) => {
+    const newChords = new Set(overlay.chords.keys());
 
-  const changedChords = chords.map<ChordInfo>((chord) => {
+    const changedChords = chords.map<ChordInfo>((chord) => {
-    const id = JSON.stringify(chord.actions);
+      const id = JSON.stringify(chord.actions);
-    if (overlay.chords.has(id)) {
+      if (overlay.chords.has(id)) {
-      newChords.delete(id);
+        newChords.delete(id);
-      const changedChord = overlay.chords.get(id)!;
+        const changedChord = overlay.chords.get(id)!;
-      return {
+        return {
-        id: chord.actions,
+          id: chord.actions,
-        // use the old phrase for stable editing
+          // use the old phrase for stable editing
-        sortBy: chord.phrase.map((it) => KEYMAP_CODES.get(it)?.id ?? it).join(),
+          sortBy: chord.phrase.map((it) => codes.get(it)?.id ?? it).join(),
-        actions: changedChord.actions,
+          actions: changedChord.actions,
-        phrase: changedChord.phrase,
+          phrase: changedChord.phrase,
-        actionsChanged: id !== JSON.stringify(changedChord.actions),
+          actionsChanged: id !== JSON.stringify(changedChord.actions),
-        phraseChanged:
+          phraseChanged:
-          JSON.stringify(chord.phrase) !== JSON.stringify(changedChord.phrase),
+            JSON.stringify(chord.phrase) !==
-        isApplied: false,
+            JSON.stringify(changedChord.phrase),
-        deleted: changedChord.deleted,
+          isApplied: false,
-      };
+          deleted: changedChord.deleted,
-    } else {
+        };
-      return {
+      } else {
-        id: chord.actions,
+        return {
-        sortBy: chord.phrase.map((it) => KEYMAP_CODES.get(it)?.id ?? it).join(),
+          id: chord.actions,
-        actions: chord.actions,
+          sortBy: chord.phrase.map((it) => codes.get(it)?.id ?? it).join(),
-        phrase: chord.phrase,
+          actions: chord.actions,
-        phraseChanged: false,
+          phrase: chord.phrase,
-        actionsChanged: false,
+          phraseChanged: false,
-        isApplied: true,
+          actionsChanged: false,
-        deleted: false,
+          isApplied: true,
-      };
+          deleted: false,
-    }
+        };
-  });
+      }
-  for (const id of newChords) {
-    const chord = overlay.chords.get(id)!;
-    changedChords.push({
-      sortBy: "",
-      isApplied: false,
-      actionsChanged: true,
-      phraseChanged: false,
-      deleted: chord.deleted,
-      id: JSON.parse(id),
-      phrase: chord.phrase,
-      actions: chord.actions,
     });
-  }
+    for (const id of newChords) {
+      const chord = overlay.chords.get(id)!;
+      changedChords.push({
+        sortBy: "",
+        isApplied: false,
+        actionsChanged: true,
+        phraseChanged: false,
+        deleted: chord.deleted,
+        id: JSON.parse(id),
+        phrase: chord.phrase,
+        actions: chord.actions,
+      });
+    }
 
-  return changedChords.sort(({ sortBy: a }, { sortBy: b }) =>
+    return changedChords.sort(({ sortBy: a }, { sortBy: b }) =>
-    a.localeCompare(b),
+      a.localeCompare(b),
-  );
+    );
-});
+  },
+);
 
 export const chordHashes = derived(
   chords,

src/lib/util/debounce.ts

@@ -0,0 +1,47 @@
+/**
+ * Creates a debounced function that delays invoking the provided function
+ * until after 'wait' milliseconds have elapsed since the last time it was
+ * invoked.
+ *
+ * I could use _.debounce(), but bringing dependency on lodash didn't feel
+ * justified yet.
+ *
+ * @param func The function to debounce
+ * @param wait The number of milliseconds to delay execution
+ * @returns A debounced version of the provided function
+ */
+function debounce<T extends (...args: any[]) => void>(
+  func: T,
+  wait: number,
+): T & { cancel: () => void } {
+  let timeout: ReturnType<typeof setTimeout> | null = null;
+
+  const debounced = function (
+    this: ThisParameterType<T>,
+    ...args: Parameters<T>
+  ): void {
+    const context = this;
+
+    const later = function () {
+      timeout = null;
+      func.apply(context, args);
+    };
+
+    if (timeout) {
+      clearTimeout(timeout);
+    }
+
+    timeout = setTimeout(later, wait);
+  };
+
+  debounced.cancel = function () {
+    if (timeout) {
+      clearTimeout(timeout);
+      timeout = null;
+    }
+  };
+
+  return debounced as T & { cancel: () => void };
+}
+
+export default debounce;

src/lib/util/from-readable.ts

@@ -0,0 +1,10 @@
+import { Observable } from "rxjs";
+import type { Readable } from "svelte/store";
+
+export function fromReadable<T>(store: Readable<T>): Observable<T> {
+  return new Observable((subscriber) =>
+    store.subscribe((value) => {
+      subscriber.next(value);
+    }),
+  );
+}

src/lib/util/shuffle.ts

@@ -0,0 +1,15 @@
+/**
+ * https://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle#The_modern_algorithm
+ */
+export function shuffleInPlace<T>(array: T[]) {
+  for (let i = array.length - 1; i >= 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1));
+    [array[i], array[j]] = [array[j]!, array[i]!];
+  }
+}
+
+export function shuffle<T>(array: T[]): T[] {
+  const result = [...array];
+  shuffleInPlace(result);
+  return result;
+}

src/routes/(app)/+layout.svelte

@@ -131,14 +131,13 @@
 
 <style lang="scss">
   .layout {
-    width: 100vw;
-    height: 100vh;
-
     display: grid;
+    grid-template-rows: 1fr;
+    grid-template-columns: auto 1fr;
     grid-template-areas:
       "sidebar main"
       "sidebar footer";
-    grid-template-columns: auto 1fr;
+    width: 100vw;
-    grid-template-rows: 1fr;
+    height: 100vh;
   }
 </style>

src/routes/(app)/BrowserWarning.svelte

@@ -26,17 +26,17 @@
   dialog {
     display: flex;
     flex-direction: column;
-    align-items: center;
     justify-content: center;
+    align-items: center;
+    border: none;
+
+    background: var(--md-sys-color-error);
 
     width: 100vw;
     height: 100vh;
 
     color: var(--md-sys-color-on-error);
 
-    background: var(--md-sys-color-error);
-    border: none;
-
     > * {
       max-width: 20cm;
     }
@@ -54,8 +54,8 @@
 
   div > p {
     display: flex;
-    gap: 8px;
     align-items: center;
+    gap: 8px;
     list-style: none;
   }
 

src/routes/(app)/Footer.svelte

@@ -16,6 +16,7 @@
     syncStatus,
   } from "$lib/serial/connection";
   import { fade, slide } from "svelte/transition";
+  import { showConnectionFailedDialog } from "$lib/dialogs/connection-failed-dialog";
 
   let locale = $state(
     (browser && (localStorage.getItem("locale") as Locales)) || detectLocale(),
@@ -52,9 +53,7 @@
       await initSerial(true);
     } catch (error) {
       console.error(error);
-      alert(
+      await showConnectionFailedDialog(String(error));
-        "Connection failed. Is your device maybe pre-CCOS? Refer to the doc link in the bottom left for more information on your device.",
-      );
     }
   }
 
@@ -174,16 +173,11 @@
 </footer>
 
 <style lang="scss">
-  select {
-    position: absolute;
-    opacity: 0;
-  }
-
   .sync-box {
     display: flex;
-    align-items: center;
-    justify-content: center;
     position: relative;
+    justify-content: center;
+    align-items: center;
 
     button {
       text-wrap: nowrap;
@@ -192,14 +186,14 @@
 
   progress {
     position: absolute;
-    z-index: -1;
+    right: 16px;
     bottom: 0;
     left: 16px;
-    right: 16px;
+    z-index: -1;
-    overflow: hidden;
+    border-radius: 4px;
     width: calc(100% - 32px);
     height: 8px;
-    border-radius: 4px;
+    overflow: hidden;
   }
 
   progress::-webkit-progress-bar {
@@ -211,32 +205,32 @@
   }
 
   .warning {
-    color: var(--md-sys-color-error);
-    gap: 8px;
     display: flex;
-    align-items: center;
     justify-content: center;
+    align-items: center;
+    gap: 8px;
+    color: var(--md-sys-color-error);
   }
 
   input[type="color"] {
-    cursor: pointer;
-
-    overflow: hidden;
     display: flex;
-    align-items: center;
     justify-content: center;
+    align-items: center;
+    cursor: pointer;
+    margin: 0;
+    border: none;
+    border-radius: 50%;
+
+    background: transparent;
+    padding: 0;
 
     inline-size: 20px;
     block-size: 20px;
-    margin: 0;
+
-    padding: 0;
+    overflow: hidden;
 
     color: inherit;
 
-    background: transparent;
-    border: none;
-    border-radius: 50%;
-
     &::-webkit-color-swatch-wrapper {
       padding: 0;
     }
@@ -248,16 +242,16 @@
 
   footer {
     display: grid;
-    align-items: center;
-    justify-content: center;
     grid-template-columns: 1fr auto 1fr;
+    justify-content: center;
+    align-items: center;
 
-    width: 100%;
+    opacity: 0.4;
     padding: 8px;
     padding-inline-end: 16px;
     padding-block-start: 0;
 
-    opacity: 0.4;
+    width: 100%;
 
     @media (prefers-contrast: more) {
       opacity: 0.8;
@@ -270,8 +264,8 @@
 
   ul {
     display: flex;
-    gap: 8px;
     align-items: center;
+    gap: 8px;
 
     margin: 0;
     padding: 0;
@@ -294,13 +288,13 @@
 
   a {
     display: flex;
-    align-items: center;
     justify-content: center;
+    align-items: center;
+
+    padding-inline: 12px;
 
     font-size: 12px;
     text-decoration: none;
-
-    padding-inline: 12px;
   }
 
   .icon {

src/routes/(app)/Sidebar.svelte

@@ -13,7 +13,6 @@
       { href: "/config/layout/", icon: "keyboard", title: "Layout" },
     ],
     [
-      // { href: "/learn", icon: "school", title: "Learn", wip: true },
       {
         href: import.meta.env.VITE_LEARN_URL,
         icon: "school",
@@ -26,8 +25,17 @@
         title: "Docs",
         external: true,
       },
+      {
+        href: "https://voicebox.charachorder.io/",
+        icon: "text_to_speech",
+        title: "Voicebox",
+        external: true,
+      },
+    ],
+    [
       { href: "/editor", icon: "edit_document", title: "Editor", wip: true },
-      { href: "https://chat.dev.charachorder.io", icon: "chat", title: "Chat", wip: true },
+      { href: "/chat", icon: "chat", title: "Chat", wip: true },
+      { href: "/learn", icon: "school", title: "Learn", wip: true },
     ],
     /*[
       { href: "/plugin", icon: "code", title: "Plugin", wip: true },
@@ -73,15 +81,15 @@
 
 <style lang="scss">
   .sidebar {
-    margin: 8px;
-    padding-inline-end: 8px;
-    width: 64px;
     display: flex;
-    flex-direction: column;
-    justify-content: space-between;
 
     grid-area: sidebar;
+    flex-direction: column;
+    justify-content: space-between;
+    margin: 8px;
     border-right: 1px solid var(--md-sys-color-outline);
+    padding-inline-end: 8px;
+    width: 64px;
   }
 
   li {
@@ -96,18 +104,18 @@
     font-size: 12px;
 
     &.wip {
-      color: var(--md-sys-color-error);
       opacity: 0.5;
+      color: var(--md-sys-color-error);
     }
 
     .icon {
       display: flex;
       justify-content: center;
-      font-size: 24px;
-      padding: 8px;
-      border-radius: 8px;
 
       transition: all 250ms ease;
+      border-radius: 8px;
+      padding: 8px;
+      font-size: 24px;
     }
 
     > .content {
@@ -124,24 +132,24 @@
       }
 
       .icon {
+        border-radius: 50%;
         background: var(--md-sys-color-primary);
         color: var(--md-sys-color-on-primary);
-        border-radius: 50%;
       }
     }
   }
 
   ul {
-    list-style: none;
-    padding: 0;
     margin: 0;
+    padding: 0;
+    list-style: none;
   }
 
   ul + ul::before {
-    content: "";
     display: block;
-    height: 1px;
-    background: var(--md-sys-color-outline);
     margin: 16px 0;
+    background: var(--md-sys-color-outline);
+    height: 1px;
+    content: "";
   }
 </style>

src/routes/(app)/SyncOverlay.svelte

@@ -33,8 +33,8 @@
   .container {
     display: flex;
     flex-direction: column;
-    align-items: center;
     justify-content: center;
+    align-items: center;
   }
 
   div {
@@ -42,10 +42,10 @@
   }
 
   progress {
-    overflow: hidden;
+    border-radius: 4px;
     width: 100%;
     height: 8px;
-    border-radius: 4px;
+    overflow: hidden;
   }
 
   progress::-webkit-progress-bar {
@@ -53,6 +53,7 @@
   }
 
   progress::-webkit-progress-value {
+    transition: width 2s ease;
     background: var(--md-sys-color-primary);
   }
 </style>

src/routes/(app)/api/firmware/+page.json

@@ -1,6 +0,0 @@
-{
-  "CHARACHORDER ONE M0": {
-    "latest": "1.1.3",
-    "next": null
-  }
-}

src/routes/(app)/ccos/+layout.svelte

@@ -1,15 +1,107 @@
 <script lang="ts">
+  import { beforeNavigate } from "$app/navigation";
+  import { page } from "$app/stores";
+  import { serialPort } from "$lib/serial/connection";
+  import { expoOut } from "svelte/easing";
+  import { slide } from "svelte/transition";
+
   let { children } = $props();
+
+  const animationDuration = 400;
+  const stagger = 80;
+
+  let targetDevice = $derived($page.params["device"]);
+  let version = $derived($page.params["version"]);
+
+  let currentDevice = $derived(
+    $serialPort
+      ? `${$serialPort.device.toLowerCase()}_${$serialPort.chipset.toLowerCase()}`
+      : undefined,
+  );
+  let isCorrectDevice = $derived(
+    currentDevice ? currentDevice === targetDevice : undefined,
+  );
+
+  let fullBack = $state(false);
+
+  beforeNavigate(({ from, to, cancel }) => {
+    fullBack = version !== undefined;
+  });
 </script>
 
-<h1><a href="/ccos">Firmware Updates</a></h1>
+<h1>
+  <a class="inline-link" href="/ccos">CCOS</a>
+  {#if targetDevice !== undefined}
+    <div
+      class="uri-fragment"
+      transition:slide={{
+        axis: "x",
+        duration: animationDuration,
+        delay: fullBack ? stagger : 0,
+        easing: expoOut,
+      }}
+    >
+      <span class="separator">/</span>
+      <a
+        href="/ccos/{targetDevice}"
+        class="device inline-link"
+        class:correct-device={isCorrectDevice === true}
+        class:incorrect-device={isCorrectDevice === false}>{targetDevice}</a
+      >
+    </div>
+  {/if}
+  {#if version !== undefined}
+    <div
+      class="uri-fragment"
+      transition:slide={{
+        axis: "x",
+        duration: animationDuration,
+        easing: expoOut,
+      }}
+    >
+      <span class="separator">/</span>
+      <em class="version">{version}</em>
+    </div>
+  {/if}
+</h1>
 
 {@render children()}
 
 <style lang="scss">
   h1 {
+    display: flex;
     margin-block: 1em;
     padding: 0;
-    font-size: 3em;
+    font-size: 2em;
+  }
+
+  .uri-fragment {
+    display: flex;
+  }
+
+  .separator {
+    margin-inline: 0.5em;
+  }
+
+  .version {
+    color: var(--md-sys-color-secondary);
+  }
+
+  .device {
+    opacity: 0.6;
+  }
+
+  .inline-link {
+    display: inline;
+    padding: 0;
+  }
+
+  .correct-device {
+    opacity: 1;
+    color: var(--md-sys-color-primary);
+  }
+
+  .incorrect-device {
+    color: var(--md-sys-color-error);
   }
 </style>

src/routes/(app)/ccos/+page.svelte

@@ -28,8 +28,8 @@
 <style lang="scss">
   ul {
     display: flex;
-    list-style: none;
     gap: 8px;
+    list-style: none;
   }
 
   li {
@@ -38,13 +38,13 @@
   }
 
   a {
-    outline: 1px solid var(--md-sys-color-outline);
-    border-radius: 8px;
     transition:
       background-color 200ms ease,
       color 200ms ease,
       outline-offset 200ms ease,
       outline-color 200ms ease;
+    outline: 1px solid var(--md-sys-color-outline);
+    border-radius: 8px;
   }
 
   @keyframes highlight {
@@ -71,9 +71,9 @@
   }
 
   .highlight {
-    outline-width: 2px;
-    outline-color: var(--md-sys-color-primary);
     animation: wiggle 500ms ease 2 alternate;
+    outline-color: var(--md-sys-color-primary);
+    outline-width: 2px;
     background-color: var(--md-sys-color-primary-container);
     color: var(--md-sys-color-on-primary-container);
   }

src/routes/(app)/ccos/+page.ts

@@ -1,8 +1,8 @@
 import type { PageLoad } from "./$types";
-import type { DirectoryListing } from "./listing";
+import type { DirectoryListing } from "$lib/meta/types/listing";
 
 export const load = (async ({ fetch }) => {
-  const result = await fetch(import.meta.env.VITE_FIRMWARE_URL);
+  const result = await fetch(`${import.meta.env.VITE_FIRMWARE_URL}/`);
   const data = await result.json();
 
   return { devices: data as DirectoryListing[] };

src/routes/(app)/ccos/[device]/+page.svelte

@@ -38,21 +38,21 @@
   }
 
   ul {
-    list-style: none;
     padding: 0;
+    list-style: none;
   }
 
   li {
-    height: 2em;
-    overflow: hidden;
     transition:
       height 200ms ease,
       opacity 200ms ease;
+    height: 2em;
+    overflow: hidden;
   }
 
   label {
-    padding: 0;
     opacity: 0.6;
+    padding: 0;
   }
 
   .title {
@@ -64,8 +64,8 @@
       margin-block-end: 0;
 
       em {
-        font-style: normal;
         color: var(--md-sys-color-primary);
+        font-style: normal;
       }
     }
   }
@@ -73,13 +73,13 @@
   time {
     opacity: 0.5;
     &:before {
-      content: "•";
       padding-inline: 0.4ch;
+      content: "•";
     }
   }
 
   div.title:has(input:not(:checked)) ~ ul .pre-release {
-    height: 0;
     opacity: 0;
+    height: 0;
   }
 </style>

src/routes/(app)/ccos/[device]/+page.ts

@@ -1,5 +1,6 @@
 import type { PageLoad } from "./$types";
-import type { DirectoryListing } from "../listing";
+import type { DirectoryListing } from "$lib/meta/types/listing";
+import { compare } from "semver";
 
 export const load = (async ({ fetch, params }) => {
   const result = await fetch(
@@ -9,7 +10,7 @@ export const load = (async ({ fetch, params }) => {
 
   return {
     versions: (data as DirectoryListing[]).sort((a, b) =>
-      b.name.localeCompare(a.name),
+      compare(b.name, a.name),
     ),
     device: params.device,
   };

src/routes/(app)/ccos/[device]/[version]/+page.svelte

@@ -2,6 +2,7 @@
   import { downloadBackup } from "$lib/backup/backup";
   import { initSerial, serialPort } from "$lib/serial/connection";
   import { fade, slide } from "svelte/transition";
+  import { lt as semverLt } from "semver";
   import type { LoaderOptions, ESPLoader } from "esptool-js";
 
   let { data } = $props();
@@ -10,7 +11,14 @@
   let success = $state(false);
   let error = $state<Error | undefined>(undefined);
 
+  let isTooOld = $derived(
+    $serialPort ? semverLt($serialPort.version, "2.0.0") : false,
+  );
+
+  let unsafeUpdate = $state(false);
+
   let terminalOutput = $state("");
+  let progress = $state(0);
 
   let step = $state(0);
   let eraseAll = $state(false);
@@ -25,10 +33,12 @@
     $serialPort = undefined;
     try {
       const file = await fetch(
-        `${data.meta.path}/${data.meta.update.ota?.name}`,
+        `${data.meta.path}/${data.meta.update.ota}`,
-      ).then((it) => it.blob());
+      ).then((it) => it.arrayBuffer());
 
-      await port.updateFirmware(file);
+      await port.updateFirmware(file, (transferred, total) => {
+        progress = transferred / total;
+      });
 
       success = true;
     } catch (e) {
@@ -44,7 +54,7 @@
       : undefined,
   );
   let isCorrectDevice = $derived(
-    currentDevice ? currentDevice === data.meta.target : undefined,
+    currentDevice ? currentDevice === data.meta.device : undefined,
   );
 
   /**
@@ -82,11 +92,11 @@
 
   async function getFileSystem() {
     if (!data.meta.update.uf2) return;
-    const uf2Promise = fetch(
+    const uf2Promise = fetch(`${data.meta.path}/${data.meta.update.uf2}`).then(
-      `${data.meta.path}/${data.meta.update.uf2.name}`,
+      (it) => it.blob(),
-    ).then((it) => it.blob());
+    );
     const handle = await window.showSaveFilePicker({
-      id: `${data.meta.target}-update`,
+      id: `${data.meta.device}-update`,
       suggestedName: "CURRENT.UF2",
       excludeAcceptAllOption: true,
       types: [
@@ -170,7 +180,7 @@
     const port = await navigator.serial.requestPort();
     try {
       console.log(data.meta);
-      const spiFlash = data.meta.spi_flash!;
+      const spiFlash = data.meta.spiFlash!;
       espLoader = await connectEsp(port);
 
       /*espLoader.flashSpiAttach(
@@ -187,29 +197,28 @@
 </script>
 
 <div class="container">
-  <h2>
+  {#if data.meta.update.ota && !data.meta.device.endsWith("m0")}
-    <a class="inline-link" href="/ccos">CCOS</a> /
-    <a
-      href="/ccos/{data.meta.target}"
-      class="device inline-link"
-      class:correct-device={isCorrectDevice === true}
-      class:incorrect-device={isCorrectDevice === false}>{data.meta.target}</a
-    >
-    / <em class="version">{data.meta.version}</em>
-  </h2>
-
-  {#if data.meta.update.ota && !data.meta.target.endsWith("m0")}
     {@const buttonError = error || (!success && isCorrectDevice === false)}
     <section>
       <button
         class="update-button"
-        class:working
+        class:working={working && (progress <= 0 || progress >= 1)}
+        class:progress={working && progress > 0 && progress < 1}
+        style:--progress="{progress * 100}%"
         class:primary={!buttonError}
         class:error={buttonError}
-        disabled={working || $serialPort === undefined || !isCorrectDevice}
+        disabled={isTooOld ||
+          working ||
+          $serialPort === undefined ||
+          !isCorrectDevice}
         onclick={update}>Apply Update</button
       >
-      {#if $serialPort && isCorrectDevice}
+      {#if isTooOld}
+        <div class="error" transition:slide>
+          Your device's firmware is too old to be updated via OTA. Follow the
+          instruction below to update it manually.
+        </div>
+      {:else if $serialPort && isCorrectDevice}
         <div transition:slide>
           Your
           <b
@@ -237,103 +246,164 @@
       {/if}
     </section>
 
-    <h3>Manual Update</h3>
+    {#if !isTooOld}
+      <label class="unsafe-opt-in"
+        ><input type="checkbox" /> Unsafe recovery options</label
+      >
+    {/if}
   {/if}
 
-  {#if isCorrectDevice === false}
+  <div class="unsafe-updates">
-    <div transition:slide class="incorrect-device">
+    {#if isCorrectDevice === false}
-      These files are incompatible with your device
+      <div transition:slide class="incorrect-device">
-    </div>
+        These files are incompatible with your device
-  {/if}
-
-  <section>
-    <ol>
-      <li>
-        <button class="inline-button" onclick={connect}
-          ><span class="icon">usb</span>Connect</button
-        >
-        your device
-        {#if step >= 1}
-          <span class="icon ok" transition:fade>check_circle</span>
-        {/if}
-      </li>
-
-      <li class:faded={step < 1}>
-        Make a <button class="inline-button" onclick={backup}
-          ><span class="icon">download</span>Backup</button
-        >
-        {#if step >= 2}
-          <span class="icon ok" transition:fade>check_circle</span>
-        {/if}
-      </li>
-
-      <li class:faded={step < 2}>
-        Reboot to <button class="inline-button" onclick={bootloader}
-          ><span class="icon">restart_alt</span>Bootloader</button
-        >
-        {#if step >= 3}
-          <span class="icon ok" transition:fade>check_circle</span>
-        {/if}
-      </li>
-
-      <li class:faded={step < 3}>
-        Replace <button class="inline-button" onclick={getFileSystem}
-          ><span class="icon">deployed_code_update</span>CURRENT.UF2</button
-        >
-        on the new drive
-        {#if step >= 4}
-          <span class="icon ok" transition:fade>check_circle</span>
-        {/if}
-      </li>
-    </ol>
-  </section>
-
-  {#if data.meta.update.esptool}
-    <section>
-      <h3>Factory Flash (WIP)</h3>
-      <p>
-        If everything else fails, you can go through the same process that is
-        being used in the factory.
-      </p>
-      <p>
-        This will temporarily brick your device if the process is not done
-        completely or incorrectly.
-      </p>
-
-      <div class="esp-buttons">
-        <button onclick={espBootloader}
-          ><span class="icon">memory</span>ESP Bootloader</button
-        >
-        <button onclick={flashImages}
-          ><span class="icon">developer_board</span>Flash Images</button
-        >
-        <label
-          ><input type="checkbox" id="erase" bind:checked={eraseAll} />Erase All</label
-        >
-        <button onclick={eraseSPI}
-          ><span class="icon">developer_board</span>Erase SPI Flash</button
-        >
       </div>
+    {/if}
 
-      <pre>{terminalOutput}</pre>
+    <section>
+      <ol>
+        <li>
+          <button class="inline-button" onclick={connect}
+            ><span class="icon">usb</span>Connect</button
+          >
+          your device
+          {#if step >= 1}
+            <span class="icon ok" transition:fade>check_circle</span>
+          {/if}
+        </li>
+
+        <li class:faded={step < 1}>
+          Make a <button class="inline-button" onclick={backup}
+            ><span class="icon">download</span>Backup</button
+          >
+          {#if step >= 2}
+            <span class="icon ok" transition:fade>check_circle</span>
+          {/if}
+        </li>
+
+        <li class:faded={step < 2}>
+          Reboot to <button class="inline-button" onclick={bootloader}
+            ><span class="icon">restart_alt</span>Bootloader</button
+          >
+          {#if step >= 3}
+            <span class="icon ok" transition:fade>check_circle</span>
+          {/if}
+        </li>
+
+        <li class:faded={step < 3}>
+          Replace <button class="inline-button" onclick={getFileSystem}
+            ><span class="icon">deployed_code_update</span>CURRENT.UF2</button
+          >
+          on the new drive
+          {#if step >= 4}
+            <span class="icon ok" transition:fade>check_circle</span>
+          {/if}
+        </li>
+      </ol>
     </section>
-  {/if}
+
+    {#if false && data.meta.update.esptool}
+      <section>
+        <h3>Factory Flash (WIP)</h3>
+        <p>
+          If everything else fails, you can go through the same process that is
+          being used in the factory.
+        </p>
+        <p>
+          This will temporarily brick your device if the process is not done
+          completely or incorrectly.
+        </p>
+
+        <div class="esp-buttons">
+          <button onclick={espBootloader}
+            ><span class="icon">memory</span>ESP Bootloader</button
+          >
+          <button onclick={flashImages}
+            ><span class="icon">developer_board</span>Flash Images</button
+          >
+          <label
+            ><input type="checkbox" id="erase" bind:checked={eraseAll} />Erase
+            All</label
+          >
+          <button onclick={eraseSPI}
+            ><span class="icon">developer_board</span>Erase SPI Flash</button
+          >
+        </div>
+
+        <pre>{terminalOutput}</pre>
+      </section>
+    {/if}
+  </div>
+
+  <section class="changelog">
+    <h2>Changelog</h2>
+    {#if data.meta.changelog.features}
+      <h3>Features</h3>
+      <ul>
+        {#each data.meta.changelog.features as feature}
+          <li>
+            <b>{@html feature.summary}</b>
+            {@html feature.description}
+          </li>
+        {/each}
+      </ul>
+    {/if}
+    {#if data.meta.changelog.fixes}
+      <h3>Fixes</h3>
+      <ul>
+        {#each data.meta.changelog.fixes as fix}
+          <li>
+            <b>{@html fix.summary}</b>
+            {@html fix.description}
+          </li>
+        {/each}
+      </ul>
+    {/if}
+  </section>
 </div>
 
 <style lang="scss">
-  h2 > em {
+  .changelog:empty {
-    font-style: normal;
+    display: none;
-    transition: color 200ms ease;
   }
 
-  h3 {
+  .changelog ul {
-    margin-block-start: 4em;
+    padding-inline-start: 0em;
+    list-style: none;
+  }
+
+  .changelog li {
+    margin-block: 0.2em;
+    padding: 0.5em 1em;
+  }
+
+  .changelog b {
+    display: inline-block;
+    translate: -0.5em -0.2em;
+    border-radius: 8px;
+    background: var(--md-sys-color-tertiary-container);
+    padding: 0.2em 0.5em;
+    color: var(--md-sys-color-on-tertiary-container);
   }
 
   pre {
     overflow: auto;
   }
 
+  .unsafe-opt-in {
+    opacity: 0.6;
+    margin-block: 1em;
+    font-size: 0.7em;
+
+    & + .unsafe-updates {
+      display: none;
+    }
+
+    &:has(input:checked) + .unsafe-updates {
+      display: block;
+    }
+  }
+
   .primary {
     color: var(--md-sys-color-primary);
   }
@@ -370,22 +440,22 @@
 
   button.inline-button {
     display: inline;
-    padding: 0;
     margin: 0;
+    padding: 0;
     height: unset;
-    font-size: inherit;
     color: var(--md-sys-color-primary);
+    font-size: inherit;
 
     .icon {
-      font-size: 1.2em;
       translate: 0 0.1em;
       padding-inline-end: 0.2em;
+      font-size: 1.2em;
     }
   }
 
   .icon.ok {
-    font-size: 1.2em;
     translate: 0 0.1em;
+    font-size: 1.2em;
     --icon-fill: 1;
   }
 
@@ -394,17 +464,7 @@
   }
 
   button.update-button {
-    overflow: hidden;
     position: relative;
-    height: 42px;
-
-    border: 2px solid currentcolor;
-    border-radius: 8px;
-
-    outline: 2px dashed currentcolor;
-    outline-offset: 4px;
-
-    background: var(--md-sys-color-background);
     transition:
       border 200ms ease,
       color 200ms ease;
@@ -412,68 +472,55 @@
     margin: 6px;
     margin-block: 16px;
 
+    outline: 2px dashed currentcolor;
+    outline-offset: 4px;
+
+    border: 2px solid currentcolor;
+    border-radius: 8px;
+
+    background: var(--md-sys-color-background);
+    height: 42px;
+    overflow: hidden;
+
     &.primary {
-      color: var(--md-sys-color-primary);
       background: none;
+      color: var(--md-sys-color-primary);
     }
 
+    &.progress,
     &.working {
       border-color: transparent;
     }
 
     &.working::before {
-      z-index: -1;
       position: absolute;
+      z-index: -1;
+      border-radius: 8px;
       background: var(--md-sys-color-background);
       width: calc(100% - 4px);
       height: calc(100% - 4px);
-      border-radius: 8px;
       content: "";
     }
 
     &.working::after {
-      z-index: -2;
       position: absolute;
-      content: "";
+      z-index: -2;
-      background: var(--md-sys-color-primary);
       animation: rotate 1s ease-out forwards infinite;
-      height: 30%;
+      background: var(--md-sys-color-primary);
       width: 120%;
-    }
+      height: 30%;
-  }
+      content: "";
-
-  hr {
-    color: var(--md-sys-color-outline);
-    margin-block: 3em;
-    margin-inline: 5em;
-    border-style: dashed;
-  }
-
-  .files {
-    list-style: none;
-    display: flex;
-    padding: 0;
-    gap: 8px;
-  }
-
-  a[download] {
-    display: grid;
-    grid-template-columns: 1fr auto;
-    grid-template-rows: 1fr;
-    border: 1px solid var(--md-sys-color-outline);
-    border-radius: 8px;
-    font-size: 0.9em;
-    height: auto;
-
-    .size {
-      font-size: 0.8em;
-      opacity: 0.8;
     }
 
-    .icon {
+    &.progress::after {
-      padding-inline-start: 0.4em;
+      position: absolute;
-      grid-column: 2;
+      left: 0;
-      grid-row: 1 / span 2;
+      opacity: 0.2;
+      z-index: -2;
+      background: var(--md-sys-color-primary);
+      width: var(--progress);
+      height: 100%;
+      content: "";
     }
   }
 
@@ -481,20 +528,6 @@
     color: var(--md-sys-color-secondary);
   }
 
-  .device {
-    opacity: 0.6;
-  }
-
-  .inline-link {
-    display: inline;
-    padding: 0;
-  }
-
-  .correct-device {
-    color: var(--md-sys-color-primary);
-    opacity: 1;
-  }
-
   .incorrect-device {
     color: var(--md-sys-color-error);
   }

src/routes/(app)/ccos/[device]/[version]/+page.ts

@@ -1,50 +1,14 @@
 import type { PageLoad } from "./$types";
-import type { FileListing, Listing } from "../../listing";
+import { getMeta } from "$lib/meta/meta-storage";
-import type { VersionMeta } from "./meta";
+import { error } from "@sveltejs/kit";
 
 export const load = (async ({ fetch, params }) => {
-  const result = await fetch(
+  const meta = await getMeta(params.device, params.version, fetch);
-    `${import.meta.env.VITE_FIRMWARE_URL}/${params.device}/${params.version}/`,
+  if (meta === undefined) {
-  );
+    error(
-  const data: Listing[] = await result.json();
+      404,
-  const meta: VersionMeta | undefined = data.some(
+      `The version ${params.version} for device ${params.device} does not exist.`,
-    (entry) => entry.type === "file" && entry.name === "meta.json",
+    );
-  )
+  }
-    ? await fetch(
+  return { meta };
-        `${import.meta.env.VITE_FIRMWARE_URL}/${params.device}/${params.version}/meta.json`,
-      ).then((res) => res.json())
-    : undefined;
-
-  return {
-    meta: {
-      version: meta?.version ?? params.version,
-      target: meta?.target ?? params.device,
-      path: `${import.meta.env.VITE_FIRMWARE_URL}${params.device}/${params.version}`,
-      git_commit: meta?.git_commit ?? "",
-      git_is_dirty: meta?.git_is_dirty ?? false,
-      git_date: meta?.git_date ?? data[0]?.mtime ?? "",
-      public_build: meta?.public_build ?? !params.version.startsWith("."),
-      development_mode: meta?.development_mode ?? 0,
-      update: {
-        uf2:
-          (data.find(
-            (entry) =>
-              entry.type === "file" &&
-              entry.name === (meta?.update?.uf2 ?? "CURRENT.UF2"),
-          ) as FileListing) ?? undefined,
-        ota:
-          data.find(
-            (entry) =>
-              entry.type === "file" &&
-              entry.name === (meta?.update?.ota ?? "firmware.bin"),
-          ) ?? undefined,
-        esptool: meta?.update?.esptool ?? undefined,
-      },
-      files: data.filter(
-        (entry) =>
-          entry.type === "file" && (!meta?.files || entry.name in meta.files),
-      ) as FileListing[],
-      spi_flash: meta?.spi_flash ?? undefined,
-    },
-  };
 }) satisfies PageLoad;

src/routes/(app)/ccos/[device]/[version]/meta.ts

@@ -1,41 +0,0 @@
-export interface VersionMeta {
-  version: string;
-  target: string;
-  git_commit: string;
-  git_is_dirty: boolean;
-  git_date: string;
-  public_build: boolean;
-  development_mode: number;
-  update: {
-    ota: string | null;
-    uf2: string | null;
-    esptool: EspToolData | null;
-  };
-  files: string[];
-  spi_flash: SPIFlashInfo | null;
-}
-
-export interface SPIFlashInfo {
-  type: string;
-  size: string;
-  connection: SPIConnection;
-}
-
-export interface SPIConnection {
-  clk: number;
-  q: number;
-  d: number;
-  hd: number;
-  cs: number;
-}
-
-export interface EspToolData {
-  chip: string;
-  baud: string;
-  before: string;
-  after: string;
-  flash_mode: string;
-  flash_freq: string;
-  flash_size: string;
-  files: Record<string, string>;
-}

src/routes/(app)/chat-rx/+page.svelte

@@ -0,0 +1,92 @@
+<script lang="ts">
+  import { initMatrixClient, isLoggedIn, matrix } from "$lib/chat/chat-rx";
+  import { flip } from "svelte/animate";
+  import { slide } from "svelte/transition";
+  import Login from "./Login.svelte";
+  import { onMount } from "svelte";
+  import { browser } from "$app/environment";
+
+  onMount(async () => {
+    if (browser) {
+      await initMatrixClient();
+    }
+  });
+
+  let { children } = $props();
+
+  let spaces = $derived($matrix?.topLevelSpaces$);
+
+  function spaceShort(name: string) {
+    return name
+      .split(" ")
+      .map((it) => it[0])
+      .join("");
+  }
+</script>
+
+{#if $isLoggedIn}
+  <div class="layout">
+    <nav class="spaces">
+      <a href="/chat/chats" class="icon chats">chat</a>
+      <hr />
+      {#if $spaces}
+        <ul>
+          {#each $spaces as space (space.roomId)}
+            <li animate:flip transition:slide>
+              <a class="space" href="/chat/space/{space.roomId}">
+                {spaceShort(space.name)}
+              </a>
+            </li>
+          {/each}
+        </ul>
+      {/if}
+      <button class="icon">add</button>
+    </nav>
+  </div>
+{:else}
+  <Login />
+{/if}
+
+<style lang="scss">
+  nav {
+    display: flex;
+    flex-direction: column;
+  }
+
+  .layout {
+    display: flex;
+    width: 100%;
+    height: 100%;
+  }
+
+  hr {
+    width: 60%;
+    height: 1px;
+  }
+
+  ul {
+    margin: 0;
+    padding: 0;
+    list-style: none;
+  }
+
+  button,
+  a {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    background: var(--md-sys-color-surface-variant);
+    width: 56px;
+    height: 56px;
+    overflow: hidden;
+  }
+
+  .chats {
+    font-size: 24px;
+  }
+
+  .space {
+    margin-bottom: 8px;
+    font-size: 20px;
+  }
+</style>