2.7.0

refactor: remove old editor/chat/learn links

.github/workflows/build.yml

@@ -4,6 +4,8 @@ on:
   push:
     branches:
       - master
+    tags:
+      - v*
   pull_request:
 
 jobs:

.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

@@ -40,4 +40,4 @@ To generate the icons use the following command:
 
 ```shell
 npm run minify-icons
-```
+```

icons.config.js

@@ -34,6 +34,7 @@ const config = {
     "abc",
     "function",
     "cloud_done",
+    "counter_4",
     "backup",
     "cloud_download",
     "cloud_off",
@@ -43,14 +44,20 @@ const config = {
     "arrow_back",
     "arrow_back_ios_new",
     "save",
+    "step_over",
+    "step_into",
+    "step_out",
+    "timer_play",
     "settings_backup_restore",
     "sound_detection_loud_sound",
     "ring_volume",
+    "skillet",
     "wifi",
     "power_settings_circle",
     "graphic_eq",
     "mail",
     "calculate",
+    "playground_2",
     "open_in_browser",
     "chevron_backward",
     "chevron_forward",
@@ -72,17 +79,25 @@ const config = {
     "light_mode",
     "palette",
     "translate",
+    "smart_toy",
+    "visibility_off",
     "play_arrow",
     "extension",
     "upload_file",
+    "file_export",
+    "file_save",
     "commit",
     "bug_report",
     "delete",
     "remove_selection",
     "bolt",
+    "thunderstorm",
+    "join_inner",
+    "uppercase",
     "undo",
     "redo",
     "replay",
+    "clock_loader_80",
     "reply",
     "navigate_before",
     "navigate_next",
@@ -133,15 +148,29 @@ const config = {
     "developer_board",
     "developer_board_off",
     "memory",
+    "gamepad_circle_up",
+    "gamepad_circle_left",
+    "gamepad_circle_down",
+    "gamepad_circle_right",
+    "trail_length_medium",
+    "blur_short",
+    "combine_columns",
+    "animation",
+    "text_select_move_back_word",
   ],
   codePoints: {
     speed: "e9e4",
     arrow_split: "e985",
     arrow_circle_down: "f181",
     arrow_circle_up: "f182",
+    gamepad_circle_up: "eecd",
+    gamepad_circle_right: "eece",
+    gamepad_circle_left: "eecf",
+    gamepad_circle_down: "eed0",
     counter_1: "f784",
     counter_2: "f783",
     counter_3: "f782",
+    counter_4: "f781",
     ios_share: "e6b8",
     light_mode: "e518",
     upload_file: "e9fc",
@@ -154,6 +183,8 @@ const config = {
     routine: "e20c",
     experiment: "e686",
     dictionary: "f539",
+    visibility_off: "e8f5",
+    file_save: "f17f",
   },
 };
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "charachorder-device-manager",
-  "version": "2.2.3",
+  "version": "2.7.0",
   "license": "AGPL-3.0-or-later",
   "private": true,
   "engines": {
@@ -34,61 +34,68 @@
     "typesafe-i18n": "typesafe-i18n"
   },
   "devDependencies": {
-    "@codemirror/autocomplete": "^6.18.6",
+    "@codemirror/autocomplete": "^6.20.0",
-    "@codemirror/commands": "^6.8.1",
+    "@codemirror/commands": "^6.10.1",
-    "@codemirror/lang-javascript": "^6.2.3",
+    "@codemirror/lang-javascript": "^6.2.4",
-    "@codemirror/language": "^6.11.0",
+    "@codemirror/language": "^6.11.3",
+    "@codemirror/merge": "^6.11.2",
     "@codemirror/state": "^6.5.2",
-    "@codemirror/view": "^6.36.5",
+    "@codemirror/view": "^6.39.4",
-    "@fontsource-variable/material-symbols-rounded": "^5.2.8",
+    "@fontsource-variable/material-symbols-rounded": "^5.2.30",
-    "@fontsource-variable/noto-sans-mono": "^5.2.6",
+    "@fontsource-variable/noto-sans-mono": "^5.2.10",
-    "@lezer/highlight": "^1.2.1",
+    "@lezer/common": "^1.4.0",
+    "@lezer/generator": "^1.8.0",
+    "@lezer/highlight": "^1.2.3",
+    "@lezer/lr": "^1.4.5",
     "@material/material-color-utilities": "^0.3.0",
     "@melt-ui/pp": "^0.3.2",
     "@melt-ui/svelte": "^0.86.6",
     "@modyfi/vite-plugin-yaml": "^1.1.1",
-    "@sveltejs/adapter-static": "^3.0.8",
+    "@sveltejs/adapter-static": "^3.0.10",
-    "@sveltejs/kit": "^2.20.2",
+    "@sveltejs/kit": "^2.49.2",
-    "@sveltejs/vite-plugin-svelte": "^5.0.3",
+    "@sveltejs/vite-plugin-svelte": "^6.2.1",
     "@tauri-apps/api": "^1.6.0",
     "@tauri-apps/cli": "^1.6.0",
     "@types/dom-view-transitions": "^1.0.6",
+    "@types/js-yaml": "^4.0.9",
+    "@types/semver": "^7.7.1",
     "@types/w3c-web-serial": "^1.0.8",
-    "@types/w3c-web-usb": "^1.0.10",
+    "@types/w3c-web-usb": "^1.0.13",
-    "@types/wicg-file-system-access": "^2023.10.5",
+    "@types/wicg-file-system-access": "^2023.10.7",
-    "@vite-pwa/sveltekit": "^1.0.0",
+    "@vite-pwa/sveltekit": "^1.1.0",
-    "autoprefixer": "^10.4.21",
+    "autoprefixer": "^10.4.23",
-    "codemirror": "^6.0.1",
+    "codemirror": "^6.0.2",
-    "cypress": "^14.2.1",
+    "cypress": "^14.5.3",
     "d3": "^7.9.0",
-    "esptool-js": "^0.5.4",
+    "esptool-js": "^0.5.7",
-    "flexsearch": "^0.8.147",
+    "flexsearch": "^0.8.212",
     "fontkit": "^2.0.4",
-    "glob": "^11.0.1",
+    "glob": "^11.0.3",
-    "jsdom": "^26.0.0",
+    "js-yaml": "^4.1.1",
-    "matrix-js-sdk": "^37.2.0",
+    "jsdom": "^26.1.0",
     "npm-run-all": "^4.1.5",
-    "prettier": "^3.5.3",
+    "prettier": "^3.7.4",
-    "prettier-plugin-svelte": "^3.3.3",
+    "prettier-plugin-css-order": "^2.1.2",
+    "prettier-plugin-svelte": "^3.4.1",
     "rxjs": "^7.8.2",
-    "sass": "^1.86.0",
+    "sass": "^1.97.0",
+    "semver": "^7.7.3",
     "socket.io-client": "^4.8.1",
-    "stylelint": "^16.17.0",
+    "stylelint": "^16.26.1",
-    "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": "^16.0.2",
-    "stylelint-config-standard-scss": "^14.0.0",
+    "stylelint-config-standard-scss": "^16.0.0",
-    "svelte": "5.25.3",
+    "svelte": "5.37.1",
-    "svelte-check": "^4.1.5",
+    "svelte-check": "^4.3.4",
     "svelte-preprocess": "^6.0.3",
     "tippy.js": "^6.3.7",
     "typesafe-i18n": "^5.26.2",
-    "typescript": "^5.8.2",
+    "typescript": "^5.8.3",
-    "vite": "^6.2.4",
+    "vite": "^7.0.6",
-    "vite-plugin-mkcert": "^1.17.8",
+    "vite-plugin-mkcert": "^1.17.9",
-    "vite-plugin-pwa": "^1.0.0",
+    "vite-plugin-pwa": "^1.0.2",
-    "vitest": "^3.1.1",
+    "vitest": "^4.0.16",
     "web-serial-polyfill": "^1.0.15",
     "workbox-window": "^7.3.0"
   },

pnpm-workspace.yaml

@@ -0,0 +1,2 @@
+onlyBuiltDependencies:
+  - svelte-preprocess

src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "app"
-version = "2.2.3"
+version = "2.7.0"
 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": "2.7.0" },
   "tauri": {
     "allowlist": { "all": false },
     "bundle": {

src/i18n/de/index.ts

@@ -6,7 +6,7 @@ const de = {
   saveActions: {
     UNDO: "Rückgängig (<kbd class='icon'>shift</kbd> halten um alle Änderungen rückgängig zu machen)",
     REDO: "Wiederholen",
-    SAVE: "Speichern",
+    SAVE: "Anwended",
   },
   update: {
     TITLE: "Gerät aktualisieren",
@@ -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

@@ -7,17 +7,17 @@ const en = {
   saveActions: {
     UNDO: "Undo (hold <kbd class='icon'>shift</kbd> to undo all changes)",
     REDO: "Redo",
-    SAVE: "Save",
+    SAVE: "Apply",
   },
   update: {
     TITLE: "Update your device",
   },
   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/ProgressButton.svelte

@@ -0,0 +1,121 @@
+<script lang="ts">
+  import type { Snippet } from "svelte";
+  import type { HTMLButtonAttributes } from "svelte/elements";
+
+  let {
+    onclick,
+    children,
+    working,
+    progress,
+    error,
+    disabled = false,
+    element = $bindable(),
+    ...restProps
+  }: {
+    onclick: () => void;
+    children: Snippet;
+    working: boolean;
+    progress: number;
+    error?: string;
+    disabled?: boolean;
+    element?: HTMLButtonElement;
+  } & HTMLButtonAttributes = $props();
+</script>
+
+<button
+  class:working={working && (progress <= 0 || progress >= 1)}
+  class:progress={working && progress > 0 && progress < 1}
+  style:--progress="{progress * 100}%"
+  class:primary={!error}
+  class:error={!!error}
+  disabled={disabled || working}
+  bind:this={element}
+  {...restProps}
+  {onclick}>{@render children()}</button
+>
+
+<style lang="scss">
+  @keyframes rotate {
+    0% {
+      transform: rotate(120deg);
+      opacity: 0;
+    }
+
+    20% {
+      transform: rotate(120deg);
+      opacity: 0;
+    }
+
+    60% {
+      opacity: 1;
+    }
+
+    100% {
+      transform: rotate(270deg);
+      opacity: 0;
+    }
+  }
+
+  button {
+    --height: 42px;
+    --border-radius: calc(var(--height) / 2);
+
+    position: relative;
+    transition:
+      border 200ms ease,
+      color 200ms ease;
+
+    margin: 6px;
+
+    outline: 2px dashed currentcolor;
+    outline-offset: 4px;
+
+    border: 2px solid currentcolor;
+    border-radius: var(--border-radius);
+
+    background: var(--md-sys-color-background);
+    height: var(--height);
+    overflow: hidden;
+
+    &.primary {
+      background: none;
+      color: var(--md-sys-color-primary);
+    }
+
+    &.progress,
+    &.working {
+      border-color: transparent;
+    }
+
+    &.working::before {
+      position: absolute;
+      z-index: -1;
+      border-radius: calc(var(--border-radius) - 2px);
+      background: var(--md-sys-color-background);
+      width: calc(100% - 4px);
+      height: calc(100% - 4px);
+      content: "";
+    }
+
+    &.working::after {
+      position: absolute;
+      z-index: -2;
+      animation: rotate 1s ease-out forwards infinite;
+      background: var(--md-sys-color-primary);
+      width: 120%;
+      height: 30%;
+      content: "";
+    }
+
+    &.progress::after {
+      position: absolute;
+      left: 0;
+      opacity: 0.2;
+      z-index: -2;
+      background: var(--md-sys-color-primary);
+      width: var(--progress);
+      height: 100%;
+      content: "";
+    }
+  }
+</style>

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/layout.d.ts

@@ -0,0 +1,19 @@
+export interface CompiledLayout {
+  name: string;
+  size: [number, number];
+  keys: CompiledLayoutKey[];
+}
+
+export interface CompiledLayoutKey {
+  id: number;
+  shape: "quarter-circle" | "square";
+  cornerRadius: number;
+  size: [number, number];
+  pos: [number, number];
+  rotate: number;
+}
+
+declare module "*.layout.yml" {
+  const layout: CompiledLayout;
+  export default layout;
+}

src/lib/assets/layouts/t4g.layout.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/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[],
-    ],
   };
 }
 
@@ -70,26 +68,30 @@ 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) ?? [],
   };
 }
 
-export async function restoreBackup(event: Event) {
+export async function restoreBackup(
+  event: Event,
+  only?: "chords" | "layout" | "settings",
+) {
   const input = (event.target as HTMLInputElement).files![0];
   if (!input) return;
   const text = await input.text();
   if (input.name.endsWith(".json")) {
-    restoreFromFile(JSON.parse(text));
+    restoreFromFile(JSON.parse(text), only);
   } else if (isCsvLayout(text)) {
-    restoreFromFile(csvLayoutToJson(text));
+    restoreFromFile(csvLayoutToJson(text), only);
   } else if (isCsvChords(text)) {
-    restoreFromFile(csvChordsToJson(text));
+    restoreFromFile(csvChordsToJson(text), only);
   } else {
   }
 }
 
 export function restoreFromFile(
   file: CharaBackupFile | CharaSettingsFile | CharaLayoutFile | CharaChordFile,
+  only?: "chords" | "layout" | "settings",
 ) {
   if (file.charaVersion !== 1) throw new Error("Incompatible backup");
   switch (file.type) {
@@ -97,9 +99,15 @@ 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";
+      else if (backupDevice === "ZERO" || backupDevice === "ENGINE")
+        backupDevice = "X";
       let currentDevice = get(serialPort)?.device;
-      if (currentDevice === "TWO") currentDevice = "ONE";
+      if (currentDevice === "TWO" || currentDevice === "M4G")
+        currentDevice = "ONE";
+      else if (currentDevice === "ZERO" || currentDevice === "ENGINE")
+        currentDevice = "X";
 
       if (backupDevice !== currentDevice) {
         alert("Backup is incompatible with this device");
@@ -108,33 +116,45 @@ export function restoreFromFile(
 
       changes.update((changes) => {
         changes.push([
-          ...getChangesFromChordFile(recent[0]),
+          ...(!only || only === "chords"
-          ...getChangesFromLayoutFile(recent[1]),
+            ? getChangesFromChordFile(recent[0])
-          ...getChangesFromSettingsFile(recent[2]),
+            : []),
+          ...(!only || only === "layout"
+            ? getChangesFromLayoutFile(recent[1])
+            : []),
+          ...(!only || only === "settings"
+            ? getChangesFromSettingsFile(recent[2])
+            : []),
         ]);
         return changes;
       });
       break;
     }
     case "chords": {
-      changes.update((changes) => {
+      if (!only || only === "chords") {
-        changes.push(getChangesFromChordFile(file));
+        changes.update((changes) => {
-        return changes;
+          changes.push(getChangesFromChordFile(file));
-      });
+          return changes;
+        });
+      }
       break;
     }
     case "layout": {
-      changes.update((changes) => {
+      if (!only || only === "layout") {
-        changes.push(getChangesFromLayoutFile(file));
+        changes.update((changes) => {
-        return changes;
+          changes.push(getChangesFromLayoutFile(file));
-      });
+          return changes;
+        });
+      }
       break;
     }
     case "settings": {
-      changes.update((changes) => {
+      if (!only || only === "settings") {
-        changes.push(getChangesFromSettingsFile(file));
+        changes.update((changes) => {
-        return changes;
+          changes.push(getChangesFromSettingsFile(file));
-      });
+          return changes;
+        });
+      }
       break;
     }
     default: {
@@ -167,12 +187,13 @@ 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 +204,13 @@ 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 +1,35 @@
+import type { Attachment } from "svelte/attachments";
+import type { CharaDevice } from "$lib/serial/device";
+import type { CCOS, CCOSKeyboardEvent } from "./ccos";
+import type { ReplayRecorder } from "$lib/charrecorder/core/recorder";
+
+export function ccosKeyInterceptor(
+  port: CharaDevice | undefined,
+  recorder: ReplayRecorder,
+) {
+  return ((element: HTMLElement) => {
+    const ccos =
+      port?.port && "handleKeyEvent" in port?.port
+        ? (port.port as CCOS)
+        : undefined;
+    console.log("Attaching CCOS key interceptor", ccos);
+
+    function onEvent(event: KeyboardEvent) {
+      ccos?.handleKeyEvent(event);
+      if (!event.defaultPrevented) {
+        recorder.next(event);
+      }
+    }
+
+    if (ccos) {
+      element.addEventListener("keydown", onEvent, true);
+      element.addEventListener("keyup", onEvent, true);
+      element.add;
+    }
+
+    return () => {
+      element.removeEventListener("keydown", onEvent, true);
+      element.removeEventListener("keyup", onEvent, true);
+    };
+  }) satisfies Attachment<HTMLElement>;
+}

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: Uint8Array;
+}
+
+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 +1,269 @@
+import { getMeta } from "$lib/meta/meta-storage";
+import type { SerialPortLike } from "$lib/serial/device";
+import type {
+  CCOSInitEvent,
+  CCOSKeyPressEvent,
+  CCOSKeyReleaseEvent,
+  CCOSOutEvent,
+} from "./ccos-events";
+import { KEYCODE_TO_SCANCODE, SCANCODE_TO_KEYCODE } from "./ccos-interop";
+
+const device = "zero_wasm";
+
+export 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 implements SerialPortLike {
+  private readonly currKeys = new Set<number>();
+
+  private readonly layout = new Map<string, string>([
+    ...Array.from(
+      { length: 26 },
+      (_, i) =>
+        [
+          JSON.stringify([`Key${String.fromCharCode(65 + i)}`, "Shift"]),
+          String.fromCharCode(65 + i),
+        ] as const,
+    ),
+    ...Array.from(
+      { length: 10 },
+      (_, i) => [JSON.stringify([`Key${i}`]), i.toString()] as const,
+    ),
+
+    [JSON.stringify(["Space"]), " "],
+    [JSON.stringify(["Backquote"]), "`"],
+    [JSON.stringify(["Minus"]), "-"],
+    [JSON.stringify(["Comma"]), ","],
+    [JSON.stringify(["Period"]), "."],
+    [JSON.stringify(["Semicolon"]), ";"],
+    [JSON.stringify(["Equal"]), "="],
+
+    [JSON.stringify(["Backquote", "Shift"]), "~"],
+    [JSON.stringify(["Minus", "Shift"]), "_"],
+    [JSON.stringify(["Comma", "Shift"]), "<"],
+    [JSON.stringify(["Period", "Shift"]), ">"],
+    [JSON.stringify(["Semicolon", "Shift"]), ":"],
+    [JSON.stringify(["Equal", "Shift"]), "+"],
+
+    [JSON.stringify(["Digit0", "Shift"]), ")"],
+    [JSON.stringify(["Digit1", "Shift"]), "!"],
+    [JSON.stringify(["Digit2", "Shift"]), "@"],
+    [JSON.stringify(["Digit3", "Shift"]), "#"],
+    [JSON.stringify(["Digit4", "Shift"]), "$"],
+    [JSON.stringify(["Digit5", "Shift"]), "%"],
+    [JSON.stringify(["Digit6", "Shift"]), "^"],
+    [JSON.stringify(["Digit7", "Shift"]), "&"],
+    [JSON.stringify(["Digit8", "Shift"]), "*"],
+    [JSON.stringify(["Digit9", "Shift"]), "("],
+  ]);
+
+  private readonly worker = new Worker("/ccos-worker.js", { type: "module" });
+
+  private resolveReady!: () => void;
+  private ready = new Promise<void>((resolve) => {
+    this.resolveReady = resolve;
+  });
+
+  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 controller?: ReadableStreamDefaultController<Uint8Array>;
+
+  readable!: ReadableStream<Uint8Array>;
+  writable!: WritableStream<Uint8Array>;
+
+  constructor(url: string) {
+    this.worker.addEventListener(
+      "message",
+      (event: MessageEvent<CCOSOutEvent>) => {
+        if (event.data instanceof Uint8Array) {
+          this.controller?.enqueue(event.data);
+          return;
+        }
+        switch (event.data.type) {
+          case "ready": {
+            this.resolveReady();
+            break;
+          }
+          case "report": {
+            this.onReport(event.data.modifiers, event.data.keys);
+            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);
+  }
+
+  getInfo(): SerialPortInfo {
+    return {};
+  }
+
+  async open(_options: SerialOptions) {
+    this.readable = new ReadableStream<Uint8Array>({
+      start: (controller) => {
+        this.controller = controller;
+      },
+    });
+    this.writable = new WritableStream<Uint8Array>({
+      write: (chunk) => {
+        this.worker.postMessage(chunk, [chunk.buffer]);
+      },
+    });
+    return this.ready;
+  }
+  async close() {
+    await this.ready;
+  }
+  async forget() {
+    await this.ready;
+    this.close();
+    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 = "3.0.0-rc.0",
+  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

@@ -10,14 +10,18 @@
     replay,
     cursor = false,
     keys = false,
+    paused = false,
     children,
     ondone,
+    ontick,
   }: {
     replay: ReplayPlayer | Replay;
     cursor?: boolean;
     keys?: boolean;
+    paused?: boolean;
     children?: Snippet;
     ondone?: () => void;
+    ontick?: (time: number) => void;
   } = $props();
 
   let replayPlayer: ReplayPlayer | undefined = $state();
@@ -45,6 +49,10 @@
 
   $effect(() => {
     if (!svg || !text) return;
+    if (paused) {
+      text.textContent = finalText ?? "";
+      return;
+    }
     const player =
       replay instanceof ReplayPlayer ? replay : new ReplayPlayer(replay);
     replayPlayer = player;
@@ -63,6 +71,7 @@
     const unsubscribePlayer = player.subscribe(apply);
     textRenderer = renderer;
 
+    player.onTick = ontick;
     player.onDone = ondone;
     player.start();
     apply();
@@ -70,8 +79,11 @@
       renderer.animated = true;
     });
     return () => {
+      textRenderer = undefined;
+      replayPlayer = undefined;
       unsubscribePlayer();
-      player?.destroy();
+      player.destroy();
+      renderer.destroy();
     };
   });
 
@@ -88,7 +100,7 @@
 {#key replay}
   <svg bind:this={svg}></svg>
   {#if browser}
-    <span use:innerText={text}></span>
+    <span use:innerText={text} style:opacity={paused ? 1 : 0}></span>
   {:else if !(replay instanceof ReplayPlayer)}
     {finalText}
   {/if}
@@ -104,7 +116,6 @@
   }
 
   span {
-    opacity: 0;
     white-space: pre-wrap;
     overflow-wrap: break-word;
   }
@@ -113,15 +124,15 @@
     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/core/player.ts

@@ -12,7 +12,10 @@ export class ReplayPlayer {
 
   startTime = performance.now();
 
-  private animationFrameId: number | null = null;
+  private animationFrameId: ReturnType<typeof requestAnimationFrame> | null =
+    null;
+
+  private timeoutId: ReturnType<typeof setTimeout> | null = null;
 
   timescale = 1;
 
@@ -20,6 +23,8 @@ export class ReplayPlayer {
 
   onDone?: () => void;
 
+  onTick?: (time: number) => void;
+
   constructor(
     readonly replay: Replay,
     plugins: ReplayPlugin[] = [],
@@ -47,6 +52,7 @@ export class ReplayPlayer {
     }
 
     const now = performance.now() - this.startTime;
+    this.onTick?.(now);
 
     while (
       this.replayCursor < this.replay.keys.length &&
@@ -131,7 +137,7 @@ export class ReplayPlayer {
       }
       return this;
     }
-    setTimeout(() => {
+    this.timeoutId = setTimeout(() => {
       this.startTime = performance.now();
       this.animationFrameId = requestAnimationFrame(this.updateLoop.bind(this));
     }, delay);
@@ -139,6 +145,9 @@ export class ReplayPlayer {
   }
 
   destroy() {
+    if (this.timeoutId) {
+      clearTimeout(this.timeoutId);
+    }
     if (this.animationFrameId) {
       cancelAnimationFrame(this.animationFrameId);
     }

src/lib/charrecorder/core/recorder.ts

@@ -56,7 +56,7 @@ export class ReplayRecorder {
 
   finish(trim = true, round = true) {
     return {
-      start: maybeRound(trim ? this.replay[0]?.[2] : this.start, round),
+      start: maybeRound(trim ? this.replay[0]?.[2] : this.start, round) ?? 0,
       finish: maybeRound(
         trim
           ? Math.max(...this.replay.map((it) => it[2] + it[3]))
@@ -74,6 +74,6 @@ export class ReplayRecorder {
             ] as const,
         )
         .sort((a, b) => a[2] - b[2]),
-    };
+    } satisfies Replay;
   }
 }

src/lib/charrecorder/renderer/renderer.ts

@@ -279,6 +279,18 @@ export class TextRenderer {
     }
   }
 
+  destroy() {
+    this.cursorNode.remove();
+    for (const node of this.nodes.values()) {
+      node.remove();
+    }
+    for (const node of this.heldNodes.values()) {
+      node.remove();
+    }
+    this.nodes.clear();
+    this.heldNodes.clear();
+  }
+
   private isShiny(char: TextToken, index: number) {
     return (
       this.shiny?.includes(index) ||

src/lib/chat/MatrixRoomMembers.svelte

@@ -1,71 +0,0 @@
-<script lang="ts">
-  import type { RoomMember } from "matrix-js-sdk";
-  import { matrixClient, memberColor } from "./chat";
-  import { theme } from "$lib/preferences";
-  import { hexFromArgb } from "@material/material-color-utilities";
-
-  let { members }: { members: RoomMember[] } = $props();
-</script>
-
-<div class="member-list">
-  {#each members as member (member.userId)}
-    {@const avatar = member.getMxcAvatarUrl()}
-    <div class="member">
-      {#if avatar}
-        <img
-          class="avatar"
-          src={$matrixClient.mxcUrlToHttp(avatar, 32, 32)}
-          alt={member.name}
-          width="32"
-          height="32"
-        />
-      {:else}
-        {@const color = memberColor(member, $theme)}
-        {@const modeColor = $theme.mode === "dark" ? color.dark : color.light}
-        <div
-          style:background={hexFromArgb(modeColor.color)}
-          style:color={hexFromArgb(modeColor.onColor)}
-          class="avatar avatar-placeholder icon"
-        >
-          person
-        </div>
-      {/if}
-      <span>{member.name}</span>
-    </div>
-  {/each}
-</div>
-
-<style lang="scss">
-  .avatar {
-    border-radius: 50%;
-    width: 32px;
-    height: 32px;
-    flex-shrink: 0;
-  }
-
-  .avatar-placeholder {
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    font-size: 24px;
-  }
-
-  .member {
-    display: flex;
-    align-items: center;
-    gap: 0.5rem;
-  }
-
-  .member-list {
-    display: flex;
-    flex-direction: column;
-    gap: 0.5rem;
-    padding: 8px;
-    overflow-y: auto;
-    height: 100%;
-  }
-
-  span {
-    word-break: break-all;
-  }
-</style>

src/lib/chat/MatrixRooms.svelte

@@ -1,73 +0,0 @@
-<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;
-    align-items: center;
-    justify-content: flex-start;
-    gap: 0.5rem;
-    cursor: pointer;
-    padding-block: 2px;
-    min-height: 0;
-    height: unset;
-    padding-inline: 16px;
-    padding-block: 4px;
-    border-radius: 8px;
-    width: 100%;
-
-    &.active {
-      background: var(--md-sys-color-primary-container);
-      color: var(--md-sys-color-on-primary-container);
-    }
-  }
-</style>

src/lib/chat/MatrixTimeline.svelte

@@ -1,233 +0,0 @@
-<script lang="ts">
-  import type {
-    EventTimeline,
-    MatrixEvent,
-    MsgType,
-    Room,
-    RoomEvent,
-    RoomMember,
-    RoomMemberEvent,
-  } from "matrix-js-sdk";
-  import { onDestroy, onMount, tick } from "svelte";
-  import { matrixClient } from "./chat";
-  import MatrixEventComponent from "./events/MatrixEvent.svelte";
-  import CharRecorder from "$lib/charrecorder/CharRecorder.svelte";
-  import { ReplayRecorder } from "$lib/charrecorder/core/recorder";
-  import { type Socket, io } from "socket.io-client";
-  import { SvelteMap } from "svelte/reactivity";
-
-  let { timeline }: { timeline: EventTimeline } = $props();
-
-  const excludeEvents = ["m.reaction", "m.room.redaction"];
-
-  let events = $state(
-    timeline
-      .getEvents()
-      .filter((it) => !excludeEvents.includes(it.getType()))
-      .reverse(),
-  );
-
-  let recorder = $state(new ReplayRecorder());
-  let showCursor = $state(false);
-
-  let timelineElement: HTMLElement = $state()!;
-
-  async function onTimeline(
-    event: MatrixEvent,
-    room?: Room,
-    toStartOfTimeline?: boolean,
-  ) {
-    if (room?.roomId !== timeline.getRoomId()) return;
-    const sender = event.getSender();
-    if (sender) {
-      live.delete(sender);
-    }
-    if (excludeEvents.includes(event.getType())) return;
-    if (toStartOfTimeline) {
-      events.push(event);
-    } else {
-      const needScroll = timelineElement.scrollTop < 20;
-      events.unshift(event);
-      if (needScroll) {
-        await tick();
-        timelineElement.scroll({
-          top: 0,
-          behavior: "smooth",
-        });
-      }
-    }
-  }
-
-  let typing = $state<string[]>([]);
-
-  function onTyping(event: MatrixEvent, member: RoomMember) {
-    typing = event.event.content?.["user_ids"] ?? [];
-  }
-
-  async function send() {
-    const roomId = timeline.getRoomId();
-    if (!roomId) return;
-    const finalText = recorder.player.stepper.text
-      .map((token) => token.text)
-      .join("");
-    const finalRecording = recorder.finish();
-    if (!finalText) return;
-    recorder = new ReplayRecorder();
-    await $matrixClient.sendMessage(roomId, {
-      msgtype: "m.text" as MsgType.Text,
-      body: finalText,
-      // @ts-expect-error
-      "m.replay": finalRecording,
-    });
-  }
-
-  function onKey(event: KeyboardEvent) {
-    if (event.type === "keyup" && event.key === "Enter" && !event.shiftKey) {
-      send();
-      return;
-    } else {
-      recorder.next(event);
-    }
-
-    if (event.type === "keyup" && recorder.player.stepper.text.length === 0) {
-      recorder = new ReplayRecorder();
-    } else {
-      socket.emit("message", {
-        timeStamp: event.timeStamp,
-        type: event.type,
-        key: event.key,
-        code: event.code,
-        username: $matrixClient.getUserId(),
-      });
-    }
-  }
-
-  let socket: Socket = $state()!;
-  let live = new SvelteMap<string, ReplayRecorder>();
-
-  onMount(() => {
-    socket = io("https://srv.charachorder.io");
-    socket.emit("join", timeline.getRoomId());
-
-    socket.on("message", async ({ message }) => {
-      let userRecorder = live.get(message.username);
-      if (!userRecorder) {
-        userRecorder = new ReplayRecorder();
-        live.set(message.username, userRecorder);
-      }
-
-      await tick();
-
-      userRecorder.next(message);
-
-      if (userRecorder.player.stepper.text.length === 0) {
-        live.delete(message.username);
-      }
-    });
-
-    $matrixClient.on("Room.timeline" as RoomEvent.Timeline, onTimeline);
-    $matrixClient.on("RoomMember.typing" as RoomMemberEvent.Typing, onTyping);
-  });
-
-  onDestroy(() => {
-    socket?.disconnect();
-    $matrixClient.off("Room.timeline" as RoomEvent.Timeline, onTimeline);
-    $matrixClient.off("RoomMember.typing" as RoomMemberEvent.Typing, onTyping);
-  });
-</script>
-
-<section>
-  <div bind:this={timelineElement} class="timeline">
-    {#each live.entries() as [userId, recorder] (userId)}
-      {@const roomId = timeline.getRoomId()}
-      {#if roomId}
-        {@const room = $matrixClient.getRoom(roomId)}
-        {@const member = room?.getMember(userId)}
-        {#if member}
-          <MatrixEventComponent sender={member} replay={recorder.player} />
-        {/if}
-      {/if}
-    {/each}
-    {#each events as event, i (event.event["event_id"])}
-      {@const prev = events[i + 1]}
-      <MatrixEventComponent {event} sender={event.sender} {prev} {timeline} />
-    {/each}
-  </div>
-
-  <div class="static-elements">
-    <div class="indicators"></div>
-    <div class="input-box">
-      <button class="icon">add</button>
-      <div
-        role="textbox"
-        tabindex="0"
-        class="input"
-        onkeydown={onKey}
-        onkeyup={onKey}
-        onfocusin={() => (showCursor = true)}
-        onfocusout={() => (showCursor = false)}
-      >
-        <CharRecorder replay={recorder.player} cursor={showCursor} />
-      </div>
-      <button class="icon" onclick={send}>send</button>
-    </div>
-  </div>
-</section>
-
-<style lang="scss">
-  $border-radius: 16px;
-
-
-  .input {
-    border: 1px solid var(--md-sys-color-outline);
-    flex-grow: 1;
-    cursor: text;
-    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;
-
-    &:focus-visible {
-      outline: none;
-    }
-  }
-
-  .input-box {
-    display: flex;
-    gap: 4px;
-    padding-block: 8px;
-    flex-shrink: 0;
-    width: 100%;
-  }
-
-  .static-elements {
-    position: relative;
-    width: 100%;
-  }
-
-  .timeline {
-    contain: content;
-    height: auto;
-    display: flex;
-    flex-direction: column-reverse;
-    overflow-y: scroll;
-    overflow-x: hidden;
-    flex-grow: 1;
-    width: 100%;
-  }
-
-
-  section {
-    display: flex;
-    flex-direction: column;
-    overflow: hidden;
-    justify-content: flex-end;
-
-    width: 100%;
-    height: 100%;
-  }
-</style>

src/lib/chat/chat-rx.ts

@@ -1,109 +0,0 @@
-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

@@ -1,35 +0,0 @@
-import { writable, type Writable } from "svelte/store";
-import type { 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";
-
-export const matrixClient: Writable<MatrixClient> = writable();
-
-export const currentRoomId = persistentWritable<string | null>(
-  "currentRoomId",
-  null,
-);
-
-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/events/MatrixEvent.svelte

@@ -1,381 +0,0 @@
-<script lang="ts">
-  import type {
-    EventTimeline,
-    MatrixEvent,
-    MatrixEventEvent,
-    Relations,
-    RelationsEvent,
-    RoomMember,
-  } from "matrix-js-sdk";
-  import MatrixMessageEvent from "./MatrixMessageEvent.svelte";
-  import { matrixClient, memberColor } from "../chat";
-  import { theme } from "$lib/preferences";
-  import { hexFromArgb } from "@material/material-color-utilities";
-  import { fade } from "svelte/transition";
-  import type { Replay } from "$lib/charrecorder/core/types";
-  import CharRecorder from "$lib/charrecorder/CharRecorder.svelte";
-  import type { ReplayPlayer } from "$lib/charrecorder/core/player";
-  import { onDestroy, onMount } from "svelte";
-  import { writable } from "svelte/store";
-
-  let {
-    event,
-    prev,
-    sender,
-    replay: replayPlayer,
-    timeline,
-  }: {
-    event?: MatrixEvent;
-    prev?: MatrixEvent;
-    sender?: RoomMember | null;
-    replay?: Replay | ReplayPlayer;
-    timeline?: EventTimeline;
-  } = $props();
-
-  let toolbarHover = $state(false);
-  let mainHover = $state(false);
-
-  let hover = $derived(toolbarHover || mainHover);
-
-  let replay: Replay | undefined = $state();
-
-  let reactions: Relations | undefined = $state(
-    timeline && event?.event.event_id
-      ? timeline
-          .getTimelineSet()
-          .relations.getChildEventsForEvent(
-            event.event.event_id,
-            "m.annotation",
-            "m.reaction",
-          )
-      : undefined,
-  );
-  let annotations = writable<[string, Set<MatrixEvent>][] | null | undefined>();
-
-  function createRelations() {
-    if (!timeline || !event?.event.event_id) return;
-    reactions?.off("Relations.add" as RelationsEvent.Add, createRelations);
-    reactions?.off(
-      "Relations.remove" as RelationsEvent.Remove,
-      createRelations,
-    );
-    reactions = timeline
-      .getTimelineSet()
-      .relations.getChildEventsForEvent(
-        event.event.event_id,
-        "m.annotation",
-        "m.reaction",
-      );
-    reactions?.on("Relations.add" as RelationsEvent.Add, createRelations);
-    reactions?.on("Relations.remove" as RelationsEvent.Remove, createRelations);
-    reactions?.on(
-      "Relations.redaction" as RelationsEvent.Redaction,
-      createRelations,
-    );
-    annotations.set(
-      reactions?.getSortedAnnotationsByKey()?.filter(([, it]) => it.size > 0),
-    );
-    console.log("create");
-  }
-
-  onMount(() => {
-    createRelations();
-    event?.on(
-      "Event.relationsCreated" as MatrixEventEvent.RelationsCreated,
-      createRelations,
-    );
-  });
-
-  onDestroy(() => {
-    event?.off(
-      "Event.relationsCreated" as MatrixEventEvent.RelationsCreated,
-      createRelations,
-    );
-    reactions?.off("Relations.add" as RelationsEvent.Remove, createRelations);
-    reactions?.off(
-      "Relations.remove" as RelationsEvent.Remove,
-      createRelations,
-    );
-    reactions?.off(
-      "Relations.redaction" as RelationsEvent.Redaction,
-      createRelations,
-    );
-  });
-</script>
-
-<div
-  class="event"
-  role="log"
-  onmouseover={() => (mainHover = true)}
-  onfocus={() => (mainHover = true)}
-  onmouseout={() => (mainHover = false)}
-  onblur={() => (mainHover = false)}
->
-  {#if event && hover}
-    <div class="backdrop" transition:fade={{ duration: 100 }}></div>
-  {/if}
-
-  {#if sender && !(prev && prev?.getType() === event?.getType() && prev.sender?.userId === event.sender?.userId)}
-    {@const color = memberColor(sender, $theme)}
-    {@const avatarMxc = sender.getMxcAvatarUrl()}
-    {#if avatarMxc}
-      {@const avatar = $matrixClient.mxcUrlToHttp(avatarMxc, 32, 32)}
-      <img
-        class="avatar"
-        src={avatar}
-        alt={sender.name}
-        width="32"
-        height="32"
-      />
-    {:else}
-      <div
-        class="avatar avatar-placeholder icon"
-        style:background={hexFromArgb(
-          $theme.mode === "dark" ? color.dark.color : color.light.color,
-        )}
-        style:color={hexFromArgb(
-          $theme.mode === "dark" ? color.dark.onColor : color.light.onColor,
-        )}
-      >
-        person
-      </div>
-    {/if}
-
-    <div
-      class="sender"
-      style:color={hexFromArgb(
-        $theme.mode === "dark" ? color.dark.color : color.light.color,
-      )}
-    >
-      <strong>{sender.name}</strong>
-      {#if replay || replayPlayer}
-        <div class="dots">
-          {#each new Array(3) as _, i}
-            <div
-              style:animation-delay={i * 0.2 + "s"}
-              style:background={hexFromArgb(
-                $theme.mode === "dark" ? color.dark.color : color.light.color,
-              )}
-              class="dot"
-            ></div>
-          {/each}
-        </div>
-      {/if}
-    </div>
-  {/if}
-
-  <div class="content">
-    {#if event}
-      {#if event.getType() === "m.room.message"}
-        <MatrixMessageEvent {event} bind:replay />
-      {:else}
-        <details>
-          <summary>{event.getType()}</summary>
-          <pre>{JSON.stringify(event.event, null, 2)}</pre>
-        </details>
-      {/if}
-    {/if}
-    {#if replayPlayer}
-      <CharRecorder replay={replayPlayer} cursor={true} keys={true} />
-    {/if}
-  </div>
-
-  {#if event && hover}
-    <div
-      role="toolbar"
-      tabindex="0"
-      class="toolbar"
-      transition:fade={{ duration: 100 }}
-      onmouseover={() => (toolbarHover = true)}
-      onfocus={() => (toolbarHover = true)}
-      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"]}
-        {#if replay}
-          <button class="icon" onclick={() => (replay = undefined)}>stop</button
-          >
-        {:else}
-          <button
-            class="icon"
-            onclick={() => (replay = event.event.content?.["m.replay"])}
-            >replay</button
-          >
-        {/if}
-      {/if}
-      <button class="icon">more_horiz</button>
-    </div>
-  {/if}
-
-  {#if $annotations && $annotations.length > 0}
-    <div class="reactions">
-      {#each $annotations as [reaction, events]}
-        <button class="reaction"
-          >{reaction} <span class="count">{events.size}</span></button
-        >
-      {/each}
-    </div>
-  {/if}
-</div>
-
-<style lang="scss">
-  details {
-    opacity: 0.5;
-    word-wrap: break-word;
-  }
-
-  pre {
-    text-wrap: wrap;
-    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 {
-    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;
-
-    a,
-    button {
-      font-size: 16px;
-      width: 24px;
-      height: 24px;
-    }
-  }
-
-  .dots {
-    display: flex;
-    gap: 2px;
-  }
-
-  @keyframes bounce {
-    0%,
-    100% {
-      transform: translateY(0);
-    }
-    50% {
-      transform: translateY(-4px);
-    }
-  }
-
-  .dot {
-    width: 6px;
-    height: 6px;
-    border-radius: 50%;
-    animation: bounce 1s infinite;
-  }
-
-  .sender,
-  .avatar {
-    margin-block: 2px 4px;
-  }
-
-  .avatar {
-    grid-area: avatar;
-    width: 32px;
-    height: 32px;
-    border-radius: 50%;
-    translate: 0 2px;
-  }
-
-  div.avatar {
-    display: flex;
-    justify-content: center;
-    align-items: center;
-  }
-
-  .sender {
-    display: flex;
-    grid-area: sender;
-    align-items: center;
-    gap: 8px;
-  }
-
-  .reactions {
-    grid-area: reactions;
-    margin-top: 2px;
-    display: flex;
-    gap: 4px;
-  }
-
-  .reaction {
-    border: 1px solid var(--md-sys-color-outline);
-    padding: 6px;
-    border-radius: 6px;
-    height: 24px;
-    display: flex;
-    font-size: 12px;
-
-    > .count {
-      font-size: 10px;
-    }
-  }
-
-  .event {
-    display: grid;
-    position: relative;
-    padding-inline: 0.5em;
-    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;
-  }
-
-  .content {
-    grid-area: content;
-    text-wrap: wrap;
-    word-wrap: break-word;
-  }
-
-  .reactions,
-  .content,
-  .sender {
-    margin-inline: 8px;
-  }
-
-  .backdrop {
-    position: absolute;
-    inset: 0;
-    z-index: -1;
-    opacity: 0.25;
-
-    background: var(--md-sys-color-surface-variant);
-
-    border-radius: 8px;
-  }
-</style>

src/lib/chat/events/MatrixMessageEvent.svelte

@@ -1,56 +0,0 @@
-<script lang="ts">
-  import CharRecorder from "$lib/charrecorder/CharRecorder.svelte";
-  import type { Replay } from "$lib/charrecorder/core/types";
-  import type { MatrixClient, MatrixEvent } from "matrix-js-sdk";
-  import { fade } from "svelte/transition";
-  import { matrixClient } from "../chat";
-
-  let { event, replay = $bindable() }: { event: MatrixEvent; replay?: Replay } =
-    $props();
-</script>
-
-<div>
-  {#if event.event.content?.msgtype === "m.image"}
-    <img
-      src={$matrixClient.mxcUrlToHttp(event.event.content["url"])}
-      alt={event.event.content["body"]}
-    />
-  {:else}
-    <span class="content" style:opacity={replay && 0}
-      >{event.event.content?.["body"]}</span
-    >
-  {/if}
-  {#if replay}
-    <div class="replay" out:fade>
-      <CharRecorder
-        {replay}
-        cursor={true}
-        keys={true}
-        ondone={() => (replay = undefined)}
-      />
-    </div>
-  {/if}
-</div>
-
-<style lang="scss">
-  div {
-    position: relative;
-    min-height: 1.5em;
-  }
-
-  img {
-    max-width: 100%;
-    max-height: 16em;
-    border-radius: 8px;
-  }
-
-  .content {
-    transition: opacity 0.2s;
-  }
-
-  .replay {
-    position: absolute;
-    top: 0;
-    left: 0;
-  }
-</style>

src/lib/chat/matrix-rx/client.ts

@@ -1,71 +0,0 @@
-import type { Direction, MatrixClient, Room } from "matrix-js-sdk";
-import {
-  filter,
-  map,
-  type Observable,
-  of,
-  distinctUntilChanged,
-  merge,
-} from "rxjs";
-import { fromMatrixClientEvent } from "./events";
-
-function roomListDistinct(prev: Room[], curr: Room[]) {
-  if (prev.length !== curr.length) return false;
-  for (let i = 0; i < prev.length; i++) {
-    if (prev[i]!.roomId !== curr[i]!.roomId) return false;
-  }
-  return true;
-}
-
-export class MatrixRx {
-  topLevelRooms$: Observable<Room[]>;
-
-  topLevelSpaces$: Observable<Room[]>;
-
-  topLevelChats$: Observable<Room[]>;
-
-  constructor(private client: MatrixClient) {
-    this.topLevelRooms$ = merge(
-      of([]),
-      fromMatrixClientEvent(client, "Room"),
-      fromMatrixClientEvent(client, "deleteRoom"),
-      fromMatrixClientEvent(client, "Room.myMembership"),
-      fromMatrixClientEvent(client, "Room.CurrentStateUpdated").pipe(
-        filter(
-          ([_room, prev, curr]) =>
-            prev.getStateEvents("m.space.parent").length !==
-            curr.getStateEvents("m.space.parent").length,
-        ),
-      ),
-    ).pipe(
-      map(() =>
-        this.client.getVisibleRooms().filter(
-          (room) =>
-            room.getMyMembership() !== "leave" &&
-            room
-              .getLiveTimeline()
-              .getState("f" as Direction.Forward)
-              ?.getStateEvents("m.space.parent").length === 0,
-        ),
-      ),
-      distinctUntilChanged(roomListDistinct),
-    );
-
-    this.topLevelSpaces$ = this.topLevelRooms$.pipe(
-      map((rooms) => rooms.filter((room) => room.isSpaceRoom())),
-      distinctUntilChanged(roomListDistinct),
-    );
-
-    this.topLevelChats$ = this.topLevelRooms$.pipe(
-      map((rooms) => rooms.filter((room) => !room.isSpaceRoom())),
-      distinctUntilChanged(roomListDistinct),
-    );
-  }
-}
-
-export class SpaceRx {
-  constructor(
-    private client: MatrixClient,
-    private space: Room,
-  ) {}
-}

src/lib/chat/matrix-rx/events.ts

@@ -1,11 +0,0 @@
-import type { ClientEventHandlerMap, MatrixClient } from "matrix-js-sdk";
-import { fromEvent, type Observable } from "rxjs";
-
-export function fromMatrixClientEvent<T extends keyof ClientEventHandlerMap>(
-  client: MatrixClient,
-  eventName: `${T}`, // hack so we can use strings instead of enums
-): Observable<Parameters<ClientEventHandlerMap[T]>> {
-  return fromEvent(client, eventName) as Observable<
-    Parameters<ClientEventHandlerMap[T]>
-  >;
-}

src/lib/chat/matrix-rx/rooms.ts

@@ -1,85 +0,0 @@
-import type {
-  MatrixClient,
-  MatrixEvent,
-  Room,
-  Direction,
-  RoomState,
-  RoomStateEventHandlerMap,
-  EventType,
-} from "matrix-js-sdk";
-import { fromMatrixClientEvent } from "./events";
-import {
-  map,
-  filter,
-  merge,
-  startWith,
-  Observable,
-  of,
-  fromEvent,
-  concat,
-  defer,
-} from "rxjs";
-
-export function matrixRoom$(
-  client: MatrixClient,
-  roomId: string | undefined,
-): Observable<Room | undefined> {
-  return merge([
-    fromMatrixClientEvent(client, "Room").pipe(
-      filter(([room]) => room.roomId === roomId),
-    ),
-    fromMatrixClientEvent(client, "deleteRoom").pipe(
-      filter(([id]) => id === roomId),
-    ),
-  ]).pipe(
-    startWith([]),
-    map(() => client.getRoom(roomId) ?? undefined),
-  );
-}
-
-export function roomTimeline$(
-  client: MatrixClient,
-  room: Room | undefined,
-): Observable<MatrixEvent[] | undefined> {
-  if (!room) return of(undefined);
-  const eventTimeline = room.getLiveTimeline();
-
-  return fromMatrixClientEvent(client, "Room.timeline").pipe(
-    filter(
-      ([, eventRoom]) =>
-        eventRoom !== undefined && eventRoom.roomId === room.roomId,
-    ),
-    startWith([]),
-    map(() => eventTimeline.getEvents()),
-  );
-}
-
-export function roomCurrentStateEvents$(
-  client: MatrixClient,
-  room: Room,
-  eventType: EventType | string,
-): Observable<MatrixEvent[]> {
-  return concat(
-    defer(() =>
-      of(
-        room
-          .getLiveTimeline()
-          .getState("f" as Direction.Forward)
-          ?.getStateEvents(eventType) ?? [],
-      ),
-    ),
-    fromMatrixClientEvent(client, "Room.CurrentStateUpdated").pipe(
-      filter(([room]) => room.roomId === room.roomId),
-      map(([_room, _prev, curr]) => curr.getStateEvents(eventType)),
-    ),
-  );
-}
-
-export function fromRoomStateEvent<T extends keyof RoomStateEventHandlerMap>(
-  state: RoomState,
-  eventName: `${T}`,
-): Observable<Parameters<RoomStateEventHandlerMap[T]>> {
-  return fromEvent(state, eventName) as Observable<
-    Parameters<RoomStateEventHandlerMap[T]>
-  >;
-}

src/lib/chat/matrix-rx/timeline.ts

@@ -1,19 +0,0 @@
-import type { EventTimeline, MatrixClient, MatrixEvent } from "matrix-js-sdk";
-import { filter, map, of, startWith, type Observable } from "rxjs";
-import { fromMatrixClientEvent } from "./events";
-
-export function roomTimeline(
-  client: MatrixClient,
-  roomId: string | undefined,
-): Observable<MatrixEvent[]> {
-  if (!roomId) return of([]);
-  const room = client.getRoom(roomId);
-  if (!room) return of([]);
-  const eventTimeline = room.getLiveTimeline();
-
-  return fromMatrixClientEvent(client, "Room.timeline").pipe(
-    filter(([, room]) => room?.roomId === roomId),
-    startWith([]),
-    map(() => eventTimeline.getEvents()),
-  );
-}

src/lib/chord-editor/AutospaceSelector.svelte

@@ -0,0 +1,54 @@
+<script lang="ts">
+  import { actionTooltip } from "$lib/title";
+
+  let {
+    onchange,
+    value,
+    variant,
+  }: {
+    value: boolean;
+    variant: "start" | "end";
+    onchange: (
+      event: Event & { currentTarget: EventTarget & HTMLInputElement },
+    ) => void;
+  } = $props();
+</script>
+
+{#snippet tooltip()}
+  {#if value}
+    {#if variant === "start"}
+      <b>Remove</b> preceding space
+    {:else}
+      <b>Add</b> trailing space
+    {/if}
+  {:else if variant === "start"}
+    <b>Keep</b> preceding space
+  {:else}
+    <b>Add</b> trailing space
+  {/if}
+{/snippet}
+<label class="autospace" {@attach actionTooltip(tooltip)}
+  ><span class="icon">space_bar</span><input
+    checked={!value}
+    {onchange}
+    type="checkbox"
+  /></label
+>
+
+<style lang="scss">
+  label.autospace {
+    display: inline-flex;
+    vertical-align: middle;
+    margin-inline: 8px;
+    border-radius: 4px;
+    background: var(--md-sys-color-tertiary-container);
+    padding-inline: 0;
+    height: 1em;
+    color: var(--md-sys-color-on-tertiary-container);
+    font-size: 1.3em;
+
+    &:has(:checked) {
+      opacity: var(--auto-space-show, 0);
+    }
+  }
+</style>

src/lib/chord-editor/action-plugin.ts

@@ -0,0 +1,107 @@
+import {
+  Decoration,
+  EditorView,
+  ViewPlugin,
+  ViewUpdate,
+  WidgetType,
+} from "@codemirror/view";
+import { mount, unmount } from "svelte";
+import Action from "$lib/components/Action.svelte";
+import { syntaxTree } from "@codemirror/language";
+import type { Range } from "@codemirror/state";
+
+export class ActionWidget extends WidgetType {
+  component?: {};
+  element?: HTMLElement;
+
+  constructor(readonly id: string | number) {
+    super();
+    this.id = id;
+  }
+
+  override eq(other: ActionWidget) {
+    return this.id == other.id;
+  }
+
+  toDOM() {
+    if (!this.element) {
+      this.element = document.createElement("span");
+      this.element.style.paddingInline = "2px";
+
+      this.component = mount(Action, {
+        target: this.element,
+        props: { action: this.id, display: "keys", inText: true },
+      });
+    }
+    return this.element;
+  }
+
+  override ignoreEvent() {
+    return true;
+  }
+
+  override destroy() {
+    if (this.component) {
+      unmount(this.component);
+    }
+  }
+}
+
+function actionWidgets(view: EditorView) {
+  const widgets: Range<Decoration>[] = [];
+  for (const { from, to } of view.visibleRanges) {
+    syntaxTree(view.state).iterate({
+      from,
+      to,
+      enter: (node) => {
+        if (node.name !== "ExplicitAction") return;
+        const value =
+          node.node.getChild("ActionId") ??
+          node.node.getChild("HexNumber") ??
+          node.node.getChild("DecimalNumber");
+        if (!value) return;
+        if (!node.node.getChild("ExplicitDelimEnd")) {
+          return;
+        }
+
+        const id = view.state.doc.sliceString(value.from, value.to);
+        let deco = Decoration.replace({
+          widget: new ActionWidget(
+            value.name === "ActionId" ? id : parseInt(id),
+          ),
+        });
+        widgets.push(deco.range(node.from, node.to));
+      },
+    });
+  }
+  return Decoration.set(widgets);
+}
+
+export const actionPlugin = ViewPlugin.fromClass(
+  class {
+    decorations = Decoration.none;
+
+    constructor(view: EditorView) {
+      this.decorations = actionWidgets(view);
+    }
+
+    update(update: ViewUpdate) {
+      if (
+        update.docChanged ||
+        update.viewportChanged ||
+        syntaxTree(update.startState) != syntaxTree(update.state)
+      )
+        this.decorations = actionWidgets(update.view);
+    }
+  },
+  {
+    decorations(instance) {
+      return instance.decorations;
+    },
+    provide(plugin) {
+      return EditorView.atomicRanges.of(
+        (view) => view.plugin(plugin)?.decorations ?? Decoration.none,
+      );
+    },
+  },
+);

src/lib/chord-editor/action-serializer.ts

@@ -0,0 +1,16 @@
+import { KEYMAP_CODES, type KeyInfo } from "$lib/serial/keymap-codes";
+import { get } from "svelte/store";
+
+export function canUseIdAsString(info: KeyInfo): boolean {
+  return !!info.id && /^[a-zA-Z_][a-zA-Z0-9_]*$/.test(info.id);
+}
+
+export function actionToValue(action: number | KeyInfo) {
+  const info =
+    typeof action === "number" ? get(KEYMAP_CODES).get(action) : action;
+  if (info && info.id?.length === 1)
+    return /^[<>\\\s]$/.test(info.id) ? `\\${info.id}` : info.id;
+  if (!info || !canUseIdAsString(info))
+    return `<0x${(info?.code ?? action).toString(16).padStart(2, "0")}>`;
+  return `<${info.id}>`;
+}

src/lib/chord-editor/autocomplete.ts

@@ -0,0 +1,72 @@
+import { KEYMAP_CATEGORIES, KEYMAP_CODES } from "$lib/serial/keymap-codes";
+import type {
+  Completion,
+  CompletionSection,
+  CompletionSource,
+} from "@codemirror/autocomplete";
+import { derived, get } from "svelte/store";
+import { actionToValue, canUseIdAsString } from "./action-serializer";
+
+const completionSections = derived(
+  KEYMAP_CATEGORIES,
+  (categories) =>
+    new Map(
+      categories.map(
+        (category) =>
+          [
+            category,
+            {
+              name: category.name,
+            } satisfies CompletionSection,
+          ] as const,
+      ),
+    ),
+);
+
+export const actionAutocompleteItems = derived(
+  [KEYMAP_CODES, completionSections],
+  ([codes, sections]) =>
+    codes
+      .values()
+      .map((info) => {
+        const canUseId = canUseIdAsString(info);
+        const completionValue =
+          (canUseId && info.id) ||
+          `0x${info.code.toString(16).padStart(2, "0")}`;
+        return {
+          label:
+            [
+              canUseId || !info.id ? undefined : `"${info.id}"`,
+              info.title,
+              info.variant?.replace(/^[a-z]/g, (c) => c.toUpperCase()),
+            ]
+              .filter(Boolean)
+              .join(" ") || completionValue,
+          detail: actionToValue(info),
+          section: info.category ? sections.get(info.category) : undefined,
+          info: info.description,
+          type: "keyword",
+          apply: completionValue + ">",
+        } satisfies Completion;
+      })
+      .filter(
+        (item) => typeof item.label === "string" && item.apply !== undefined,
+      )
+      .toArray(),
+);
+
+export const actionAutocomplete = ((context) => {
+  let word = context.tokenBefore([
+    "ExplicitDelimStart",
+    "ActionId",
+    "HexNumber",
+    "DecimalNumber",
+  ]);
+  if (!word) return null;
+  console.log(get(actionAutocompleteItems));
+  return {
+    from: word.type.name === "ExplicitDelimStart" ? word.to : word.from,
+    validFor: /^<?[a-zA-Z0-9_]*$/,
+    options: get(actionAutocompleteItems),
+  };
+}) satisfies CompletionSource;

src/lib/chord-editor/changes-plugin.ts

@@ -0,0 +1,17 @@
+import {
+  EditorView,
+  ViewPlugin,
+  ViewUpdate,
+  type PluginValue,
+} from "@codemirror/view";
+
+export const changesPlugin = ViewPlugin.fromClass(
+  class implements PluginValue {
+    constructor(readonly view: EditorView) {}
+
+    update(update: ViewUpdate) {}
+  },
+  {
+    eventHandlers: {},
+  },
+);

src/lib/chord-editor/chord-delim-plugin.ts

@@ -0,0 +1,157 @@
+import {
+  Decoration,
+  EditorView,
+  ViewPlugin,
+  ViewUpdate,
+  WidgetType,
+} from "@codemirror/view";
+import { syntaxTree } from "@codemirror/language";
+import type { Range } from "@codemirror/state";
+import { mount, unmount } from "svelte";
+import Action from "../components/Action.svelte";
+import type { SyntaxNodeRef } from "@lezer/common";
+import classNames from "./concatenator-button.module.scss";
+
+export class DelimWidget extends WidgetType {
+  component?: {};
+  element?: HTMLElement;
+
+  constructor(readonly hasConcatenator: boolean) {
+    super();
+  }
+
+  override eq(other: DelimWidget) {
+    return this.hasConcatenator == other.hasConcatenator;
+  }
+
+  toDOM() {
+    if (!this.element) {
+      this.element = document.createElement("span");
+      this.element.innerHTML =
+        " ⇛" + (this.hasConcatenator ? "" : " ");
+      this.element.style.scale = "1.8";
+      this.element.style.color =
+        "color-mix(in srgb, currentColor 50%, transparent)";
+
+      if (this.hasConcatenator) {
+        const button = document.createElement("button");
+        button.className = classNames["concatenator-button"]!;
+        this.component = mount(Action, {
+          target: button,
+          props: { action: 574, display: "keys", inText: true, ghost: true },
+        });
+        this.element.appendChild(button);
+      }
+    }
+    return this.element;
+  }
+
+  override ignoreEvent() {
+    return false;
+  }
+
+  override destroy() {
+    if (this.component) {
+      unmount(this.component);
+    }
+  }
+}
+
+function getJoinNode(
+  view: EditorView,
+  phraseDelimNode: SyntaxNodeRef,
+): SyntaxNodeRef | null | undefined {
+  const firstPhraseAction = phraseDelimNode.node.nextSibling
+    ?.getChild("ActionString")
+    ?.node.firstChild?.node.getChild("ExplicitAction");
+  const idNode = firstPhraseAction?.node.getChild("ActionId");
+  const actionId = idNode
+    ? view.state.doc.sliceString(idNode.from, idNode.to)
+    : null;
+  const isJoinAction =
+    actionId === "JOIN" &&
+    !!firstPhraseAction!.node.getChild("ExplicitDelimEnd");
+  return isJoinAction ? firstPhraseAction : null;
+}
+
+function actionWidgets(view: EditorView) {
+  const widgets: Range<Decoration>[] = [];
+  for (const { from, to } of view.visibleRanges) {
+    syntaxTree(view.state).iterate({
+      from,
+      to,
+      enter: (node) => {
+        if (node.name !== "PhraseDelim") return;
+        const joinNode = getJoinNode(view, node);
+
+        let deco = Decoration.replace({
+          widget: new DelimWidget(!joinNode),
+        });
+        widgets.push(deco.range(node.from, node.to));
+      },
+    });
+  }
+  return Decoration.set(widgets);
+}
+
+export const delimPlugin = ViewPlugin.fromClass(
+  class {
+    decorations = Decoration.none;
+
+    constructor(view: EditorView) {
+      this.decorations = actionWidgets(view);
+    }
+
+    update(update: ViewUpdate) {
+      if (
+        update.docChanged ||
+        update.viewportChanged ||
+        syntaxTree(update.startState) != syntaxTree(update.state)
+      )
+        this.decorations = actionWidgets(update.view);
+    }
+  },
+  {
+    decorations(instance) {
+      return instance.decorations;
+    },
+    provide(plugin) {
+      return EditorView.atomicRanges.of(
+        (view) => view.plugin(plugin)?.decorations ?? Decoration.none,
+      );
+    },
+    eventHandlers: {
+      click: (event, view) => {
+        if (!(event.target instanceof HTMLElement)) return;
+        if (
+          !(
+            event.target instanceof HTMLButtonElement ||
+            (event.target as HTMLElement).parentElement instanceof
+              HTMLButtonElement
+          )
+        )
+          return;
+
+        const chordNode = syntaxTree(view.state).resolve(
+          view.posAtDOM(event.target),
+        );
+        const delimNode = (
+          chordNode.name === "ActionString"
+            ? chordNode.parent?.parent
+            : chordNode
+        )?.getChild("PhraseDelim");
+        if (!delimNode) return;
+        const joinNode = getJoinNode(view, delimNode);
+        if (!event.target.checked && !joinNode) {
+          view.dispatch({
+            changes: {
+              from: delimNode.to,
+              insert: "<JOIN>",
+            },
+            selection: { anchor: delimNode.to + "<JOIN>".length },
+          });
+        }
+      },
+    },
+  },
+);

src/lib/chord-editor/chords-grammar-plugin.ts

@@ -0,0 +1,57 @@
+import { parser } from "./chords.grammar";
+import {
+  LRLanguage,
+  LanguageSupport,
+  HighlightStyle,
+} from "@codemirror/language";
+import { styleTags, tags } from "@lezer/highlight";
+import { actionAutocomplete } from "./autocomplete";
+
+export const chordHighlightStyle = HighlightStyle.define([
+  {
+    tag: tags.keyword,
+    paddingInline: "2px",
+    opacity: "0.5",
+  },
+  {
+    tag: tags.className,
+    backgroundColor:
+      "color-mix(in srgb, var(--md-sys-color-surface-variant) 50%, transparent)",
+    borderRadius: "4px",
+    paddingInline: "4px",
+    marginInline: "-4px",
+  },
+  {
+    tag: tags.integer,
+    color: "var(--md-sys-color-tertiary)",
+  },
+  {
+    tag: tags.angleBracket,
+    opacity: "0.5",
+  },
+  { tag: tags.modifier, opacity: "0.25" },
+  { tag: tags.escape, color: "var(--md-sys-color-primary)" },
+  { tag: tags.strong, fontWeight: "bold" },
+]);
+
+export const chordLanguage = LRLanguage.define({
+  name: "chords",
+  parser: parser.configure({
+    props: [
+      styleTags({
+        "PhraseDelim CompoundDelim": [tags.keyword, tags.strong],
+        "HexNumber DecimalNumber": [tags.className, tags.integer],
+        "ExplicitDelimStart ExplicitDelimEnd": tags.angleBracket,
+        ActionId: tags.className,
+        EscapedLetter: tags.escape,
+        Escape: [tags.escape, tags.modifier],
+      }),
+    ],
+  }),
+});
+
+export function chordLanguageSupport() {
+  return new LanguageSupport(chordLanguage, [
+    chordLanguage.data.of({ autocomplete: actionAutocomplete }),
+  ]);
+}

src/lib/chord-editor/chords.grammar

@@ -0,0 +1,27 @@
+@top Program { Chord* }
+
+ExplicitAction { ExplicitDelimStart (HexNumber | DecimalNumber | ActionId) ExplicitDelimEnd }
+EscapedSingleAction { Escape EscapedLetter }
+Action { SingleLetter | ExplicitAction | EscapedSingleAction }
+ActionString { Action* }
+ChordInput { (ActionString CompoundDelim)* ActionString }
+ChordPhrase { ActionString }
+Chord { ChordInput PhraseDelim ChordPhrase ChordDelim }
+
+@tokens {
+  @precedence {HexNumber, DecimalNumber}
+  @precedence {CompoundDelim, PhraseDelim, ExplicitDelimStart, ChordDelim, SingleLetter}
+  @precedence {EscapedLetter}
+  ExplicitDelimStart {"<"}
+  ExplicitDelimEnd {">"}
+  CompoundDelim {"+>"}
+  PhraseDelim {"=>"}
+  Escape { "\\" }
+  HexNumber { "0x" $[a-fA-F0-9]+ }
+  DecimalNumber { $[0-9]+ }
+  ActionId { $[a-zA-Z_]$[a-zA-Z0-9_]* }
+  SingleLetter { ![\\] }
+  EscapedLetter { ![] }
+  ChordDelim { ($[\n] | @eof) }
+}
+

src/lib/chord-editor/concatenator-button.module.scss

@@ -0,0 +1,13 @@
+.concatenator-button {
+  display: inline;
+  opacity: calc(var(--auto-space-show, 0) * 0.7);
+  margin: 0;
+  padding: 4px;
+  height: auto;
+
+  > :global(kbd) {
+    outline: 1px dashed var(--md-sys-color-outline);
+    outline-offset: -1px;
+    background: none;
+  }
+}

src/lib/chord-editor/grammar.d.ts

@@ -0,0 +1,3 @@
+declare module "*.grammar" {
+  export const parser: import("@lezer/lr").LRParser;
+}

src/lib/chord-editor/test.txt

@@ -0,0 +1,16 @@
+.=<LEFT_SHIFT> => =>
+;ims => <0x219><IMPULSE>
+-;<KSC_2C><LEFT_SHIFT> => <0x23e>_<0x23e>
+.;g => <0x23e>...<0x23e><LH_THUMB_3_3D>
+'dg => <0x23e>'<0x23e>
+'gl => <0x23e>'ll<0x23e>
+'ar => <0x23e>'re<0x23e>
+'gs => <0x23e>'s<0x23e>
+'ev => <0x23e>'ve<0x23e>
+<SPACE>-; => <0x23e><0x223>-<0x223><KSC_00>
+<SPACE>;<LEFT_SHIFT> => <0x23e><0x223><0x23d><0x223><KSC_00>
+<SPACE>;g => <0x23e><0x223><SPACE><0x223><KSC_00>
+deg => <0x23e>ed<0x23e>
+;gr => <0x23e>er<0x23e>
+;es => <0x23e>es<0x23e>
+;est => <0x23e>est<0x23e>

src/lib/components/Action.svelte

@@ -1,95 +1,219 @@
 <script lang="ts">
-  import { KEYMAP_CODES } from "$lib/serial/keymap-codes";
+  import { KEYMAP_CODES, KEYMAP_IDS } from "$lib/serial/keymap-codes";
   import type { KeyInfo } from "$lib/serial/keymap-codes";
-  import { action as title } from "$lib/title";
   import { osLayout } from "$lib/os-layout";
+  import { isVerbose } from "./verbose-action";
+  import { actionTooltip } from "$lib/title";
 
   let {
     action,
     display,
-  }: { action: number | KeyInfo; display: "inline-keys" | "keys" } = $props();
+    inText = false,
+  }: {
+    action: string | number | KeyInfo;
+    display: "inline-keys" | "keys" | "verbose";
+    inText?: boolean;
+  } = $props();
 
-  let info = $derived(
+  let retrievedInfo = $derived(
     typeof action === "number"
-      ? ($KEYMAP_CODES.get(action) ?? { code: action })
+      ? $KEYMAP_CODES.get(action)
-      : action,
+      : typeof action === "string"
+        ? $KEYMAP_IDS.get(action)
+        : action,
+  );
+  let info = $derived(
+    retrievedInfo ??
+      (typeof action === "number"
+        ? ({ code: action } satisfies KeyInfo)
+        : typeof action === "string"
+          ? ({ code: 1024, id: action } satisfies KeyInfo)
+          : action),
   );
   let dynamicMapping = $derived(info.keyCode && $osLayout.get(info.keyCode));
-
+  let hasPopover = $derived(
-  let tooltip = $derived(
+    !retrievedInfo || !info.id || info.title || info.description,
-    `&lt;${info.id ?? `0x${info.code.toString(16)}`}&gt; ` +
-      (info.title ?? "") +
-      (info.variant === "left"
-        ? " (left)"
-        : info.variant === "right"
-          ? " (right)"
-          : ""),
   );
 </script>
 
-{#if display === "keys"}
+{#snippet popover()}
+  {#if retrievedInfo}
+    {#if info.icon || info.display || !info.id}
+      &lt;<b>{info.id ?? `0x${info.code.toString(16)}`}</b>&gt;
+    {/if}
+    {#if info.title}
+      {info.title}
+    {/if}
+    {#if info.variant === "left"}
+      (Left)
+    {:else if info.variant === "right"}
+      (Right)
+    {/if}
+    {#if info.description}
+      <br />
+      <small>{info.description}</small>
+    {/if}
+    {#if info.breaking}
+      <br />&nbsp;<i>Prevents prepended autospaces</i>
+    {/if}
+    {#if info.separator || info.breaking}
+      <br />&nbsp;<i>Stops autocorrect</i>
+    {/if}
+  {:else}
+    <b>Unknown Action</b><br />
+    {#if info.code > 1023}
+      This action cannot be translated and will be ingored.
+    {/if}
+  {/if}
+{/snippet}
+
+{#snippet kbdText()}
+  {dynamicMapping ??
+    info.icon ??
+    info.display ??
+    info.id ??
+    `0x${info.code.toString(16)}`}
+{/snippet}
+{#snippet kbdSnippet(withPopover = true)}
   <kbd
+    class:in-text={inText}
     class:icon={!!info.icon}
     class:left={info.variant === "left"}
     class:right={info.variant === "right"}
-    use:title={{ title: tooltip }}
+    class:error={info.code > 1023}
+    class:warn={!retrievedInfo}
+    {@attach withPopover && hasPopover ? actionTooltip(popover) : null}
   >
-    {dynamicMapping ??
+    {@render kbdText()}
-      info.icon ??
-      info.display ??
-      info.id ??
-      `0x${info.code.toString(16)}`}
   </kbd>
-{:else if display === "inline-keys"}
+{/snippet}
+{#snippet inlineKbdSnippet()}
   {#if !info.icon && dynamicMapping?.length === 1}
     <span
-      use:title={{ title: tooltip }}
+      {@attach hasPopover ? actionTooltip(popover) : null}
+      class:in-text={inText}
+      class:error={info.code > 1023}
+      class:warn={!retrievedInfo}
       class:left={info.variant === "left"}
       class:right={info.variant === "right"}>{dynamicMapping}</span
     >
   {:else if !info.icon && info.id?.length === 1}
     <span
-      use:title={{ title: tooltip }}
+      {@attach hasPopover ? actionTooltip(popover) : null}
+      class:in-text={inText}
+      class:error={info.code > 1023}
+      class:warn={!retrievedInfo}
       class:left={info.variant === "left"}
       class:right={info.variant === "right"}>{info.id}</span
     >
   {:else}
     <kbd
       class="inline-kbd"
+      class:in-text={inText}
       class:left={info.variant === "left"}
       class:right={info.variant === "right"}
       class:icon={!!info.icon}
-      use:title={{ title: tooltip }}
+      class:warn={!retrievedInfo}
-    >
+      class:error={info.code > 1023}
-      {dynamicMapping ??
+      {@attach hasPopover ? actionTooltip(popover) : null}
-        info.icon ??
-        info.display ??
-        info.id ??
-        `0x${info.code.toString(16)}`}</kbd
     >
+      {@render kbdText()}
+    </kbd>
   {/if}
+{/snippet}
+
+{#if display === "keys"}
+  {@render kbdSnippet()}
+{:else if display === "verbose"}
+  {#if isVerbose(info)}
+    <div class="verbose" {@attach hasPopover ? actionTooltip(popover) : null}>
+      {@render kbdSnippet(false)}
+      <div class="verbose-title">{info.title}</div>
+    </div>
+  {:else}
+    {@render inlineKbdSnippet()}
+  {/if}
+{:else if display === "inline-keys" || display === "inline-text"}
+  {@render inlineKbdSnippet()}
 {/if}
 
 <style lang="scss">
   kbd:not(.inline-kbd) {
-    height: 24px;
-    padding-block: auto;
     transition: color 250ms ease;
+    padding-block: auto;
+    height: 24px;
+
+    &.in-text {
+      display: inline-flex;
+      vertical-align: middle;
+      margin-block: auto;
+      padding-block: revert;
+    }
   }
 
+  .warn:not(.error) {
+    border-color: var(--md-sys-color-error);
+    color: var(--md-sys-color-error);
+  }
+
+  .error {
+    opacity: 0.6;
+    text-decoration: line-through;
+  }
+
+  $variant-offset: 12px;
+  $variant-padding: calc(2px + $variant-offset);
+  $variant-color: color-mix(
+    in srgb,
+    var(--md-sys-color-on-surface) 50%,
+    transparent
+  );
+
   .left {
-    border-left-width: 3px;
+    padding-inline-end: $variant-padding;
+    text-shadow: $variant-offset 0 2px $variant-color;
   }
   .right {
-    border-right-width: 3px;
+    padding-inline-start: $variant-padding;
+    text-shadow: -$variant-offset 0 2px $variant-color;
   }
 
-
   .inline-kbd {
     margin-inline-end: 2px;
+
+    &.in-text.icon {
+      translate: 0 -4em;
+    }
   }
 
   :global(span) + .inline-kbd {
     margin-inline-start: 2px;
   }
+
+  .verbose {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    margin-inline: 2px;
+    min-width: 160px;
+    height: 32px;
+
+    kbd {
+      justify-content: flex-start;
+    }
+
+    .verbose-title {
+      display: -webkit-box;
+      opacity: 0.9;
+      max-width: 15ch;
+      -webkit-line-clamp: 2; /* number of lines to show */
+      line-clamp: 2;
+      overflow: hidden;
+      font-style: italic;
+      font-size: 12px;
+      text-align: left;
+      text-overflow: ellipsis;
+      -webkit-box-orient: vertical;
+    }
+  }
 </style>

src/lib/components/ActionListItem.svelte

@@ -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

@@ -1,5 +1,5 @@
 <script lang="ts">
-  import { fade, slide } from "svelte/transition";
+  import { fade } from "svelte/transition";
 
   let { value }: { value: number } = $props();
 
@@ -29,15 +29,15 @@
 
 <style lang="scss">
   .digits {
-    position: relative;
     display: inline-block;
+    position: relative;
     transition: width 500ms ease;
   }
 
   .digit-wrapper {
     display: inline-grid;
-    height: 1em;
     width: 1ch;
+    height: 1em;
   }
 
   .digit {

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

@@ -1,10 +1,15 @@
 <script lang="ts">
   import { serialLog, serialPort } from "$lib/serial/connection";
+  import { onMount } from "svelte";
   import { slide } from "svelte/transition";
 
+  onMount(() => {
+    io.scrollTo({ top: io.scrollHeight });
+  });
+
   function submit(event: Event) {
     event.preventDefault();
-    $serialPort?.send(0, value.trim());
+    $serialPort?.send(0, [value.trim()]);
     value = "";
     io.scrollTo({ top: io.scrollHeight });
   }
@@ -33,63 +38,61 @@
 
 <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 +102,10 @@
   fieldset {
     all: unset;
 
-    position: relative;
-
     display: block;
 
+    position: relative;
+
     opacity: 0.8;
 
     transition: opacity 250ms ease;
@@ -113,16 +116,16 @@
   }
 
   .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 +133,24 @@
     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

@@ -1,9 +1,14 @@
 <script lang="ts">
-  let { title, shortcut }: { title?: string; shortcut?: string } = $props();
+  import type { Snippet } from "svelte";
+
+  let { title, shortcut }: { title?: string | Snippet; shortcut?: string } =
+    $props();
 </script>
 
-{#if title}
+{#if typeof title === "string"}
   <p>{@html title}</p>
+{:else}
+  {@render title?.()}
 {/if}
 
 {#if shortcut}
@@ -20,8 +25,8 @@
 
     :global(kbd.icon) {
       display: inline-flex;
-      font-size: inherit;
       translate: 0 0.2em;
+      font-size: inherit;
     }
   }
 </style>

src/lib/components/layout/ActionList.svelte

@@ -0,0 +1,357 @@
+<script lang="ts">
+  import {
+    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 "$i18n/i18n-svelte";
+  import { actionTooltip } from "$lib/title";
+  import { get } from "svelte/store";
+  import type { KeymapCategory } from "$lib/meta/types/actions";
+  import Action from "../Action.svelte";
+  import { isVerbose } from "../verbose-action";
+  import { actionToValue } from "$lib/chord-editor/action-serializer";
+
+  let {
+    currentAction = undefined,
+    nextAction = undefined,
+    autofocus = false,
+    onselect,
+    onclose,
+  }: {
+    currentAction?: number;
+    nextAction?: number;
+    autofocus?: boolean;
+    onselect?: (id: number) => void;
+    onclose?: () => void;
+  } = $props();
+
+  onMount(() => {
+    search();
+    if (autofocus) {
+      searchBox.focus();
+    }
+  });
+
+  const index = new FlexSearch.Index({ tokenize: "full" });
+
+  $effect(() => {
+    createIndex($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 || ""} ${
+          action.description || ""
+        }`,
+      );
+    }
+  }
+
+  async function search() {
+    const groups = new Map(
+      $KEYMAP_CATEGORIES.map(
+        (category) => [category, []] as [KeymapCategory, KeyInfo[]],
+      ),
+    );
+    const result =
+      searchBox.value === ""
+        ? Array.from($KEYMAP_CODES.keys())
+        : await index!.searchAsync(searchBox.value);
+    for (const id of result) {
+      const action = $KEYMAP_CODES.get(id as number);
+      if (action?.category) {
+        groups.get(action.category)?.push(action);
+      }
+    }
+
+    function sortValue(action: KeyInfo): number {
+      return isVerbose(action) ? 0 : action.id?.length === 1 ? 2 : 1;
+    }
+    for (const actions of groups.values()) {
+      actions.sort((a, b) => sortValue(b) - sortValue(a));
+    }
+    results = groups;
+    exact = get(KEYMAP_IDS).get(searchBox.value)?.code;
+    code = Number(searchBox.value);
+  }
+
+  function select(id?: number) {
+    if (id !== undefined) {
+      onselect?.(id);
+    }
+  }
+
+  function keyboardNavigation(event: KeyboardEvent) {
+    if (event.shiftKey && event.key === "Enter" && exact !== undefined) {
+      onselect?.(exact);
+    } else if (event.key === "ArrowDown") {
+      const element =
+        resultList.querySelector("li:focus-within")?.nextSibling ??
+        resultList.querySelector("li:not(.exact)");
+      if (element instanceof HTMLLIElement) {
+        element.querySelector("button")?.focus();
+      }
+    } else if (event.key === "ArrowUp") {
+      const element =
+        resultList.querySelector("li:focus-within")?.previousSibling ??
+        resultList.querySelector("li:not(.exact)");
+      if (element instanceof HTMLLIElement) {
+        element.querySelector("button")?.focus();
+      }
+    } else {
+      searchBox.focus();
+      return;
+    }
+    event.preventDefault();
+  }
+
+  let results: Map<KeymapCategory, KeyInfo[]> = $state(new Map());
+  let exact: number | undefined = $state(undefined);
+  let code: number = $state(Number.NaN);
+
+  let searchBox: HTMLInputElement;
+  let resultList: HTMLUListElement;
+</script>
+
+<div class="content">
+  <div class="search-row">
+    <!-- svelte-ignore a11y_autofocus -->
+    <input
+      type="search"
+      bind:this={searchBox}
+      oninput={search}
+      onkeypress={keyboardNavigation}
+      placeholder={$LL.actionSearch.PLACEHOLDER()}
+    />
+    {#if onclose}
+      <button onclick={() => select(0)} {@attach actionTooltip("", "shift+esc")}
+        >{$LL.actionSearch.DELETE()}</button
+      >
+      <button
+        {@attach actionTooltip($LL.modal.CLOSE(), "esc")}
+        class="icon"
+        onclick={onclose}>close</button
+      >
+    {/if}
+  </div>
+  {#if currentAction !== undefined}
+    <aside>
+      <h3>{$LL.actionSearch.CURRENT_ACTION()}</h3>
+      <ActionListItem id={currentAction} />
+    </aside>
+    {#if nextAction}
+      <aside>
+        <h3>{$LL.actionSearch.NEXT_ACTION()}</h3>
+        <ActionListItem id={nextAction} />
+      </aside>
+    {/if}
+  {/if}
+  <ul bind:this={resultList}>
+    {#if exact !== undefined}
+      <li class="exact">
+        <i>Exact match</i>
+        <ActionListItem id={exact} onclick={() => select(exact)} />
+      </li>
+    {/if}
+    {#if !exact && code}
+      {#if code >= 2 ** 5 && code < 2 ** 13}
+        <li><button onclick={() => select(code)}>USE CODE</button></li>
+      {:else}
+        <li>Action code is out of range</li>
+      {/if}
+    {/if}
+    {#each results as [category, actions] (category)}
+      {#if actions.length > 0}
+        <div class="category">
+          <h3>{category.name}</h3>
+          <div class="description">{category.description}</div>
+          <ul>
+            {#each actions as action (action.code)}
+              <button
+                class="action-item"
+                draggable={!onclose}
+                onclick={() => select(action.code)}
+                ondragstart={onclose === undefined
+                  ? (event) => {
+                      if (!event.dataTransfer) return;
+                      event.stopPropagation();
+                      event.dataTransfer.dropEffect = "copy";
+                      event.dataTransfer.clearData();
+                      event.dataTransfer.setData(
+                        "text/plain",
+                        actionToValue(action.code),
+                      );
+                    }
+                  : undefined}
+              >
+                <Action {action} display="verbose"></Action>
+              </button>
+            {/each}
+          </ul>
+        </div>
+      {/if}
+    {/each}
+  </ul>
+</div>
+
+<style lang="scss">
+  .action-item {
+    margin: 0;
+    padding: 0;
+    height: auto;
+    font: inherit;
+
+    &[draggable="true"] {
+      cursor: grab;
+    }
+  }
+
+  aside {
+    opacity: 0.4;
+
+    margin: 8px;
+    border: 1px dashed var(--md-sys-color-outline);
+    border-radius: 8px;
+    pointer-events: none;
+
+    > h3 {
+      margin-inline-start: 16px;
+      margin-block-start: -13px;
+      margin-block-end: 0;
+
+      background: var(--md-sys-color-background);
+      padding-inline: 8px;
+      width: fit-content;
+    }
+
+    @media (prefers-contrast: more) {
+      opacity: 0.8;
+    }
+
+    @media (forced-colors: active) {
+      opacity: 1;
+      color: GrayText;
+    }
+  }
+
+  .search-row {
+    display: flex;
+    align-items: center;
+    gap: 4px;
+    margin-inline: 16px;
+  }
+
+  .content {
+    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%));
+
+    overflow: hidden;
+
+    color: var(--md-sys-color-on-background);
+
+    @media (forced-colors: active) {
+      border: 1px solid CanvasText;
+    }
+  }
+
+  input[type="search"] {
+    transition: all 250ms ease;
+    margin-block-end: 8px;
+    border: none;
+    border-bottom: 1px solid var(--md-sys-color-surface-variant);
+
+    background: none;
+    padding-inline: 16px;
+    width: 100%;
+    height: 64px;
+    color: currentcolor;
+    font-size: 16px;
+
+    font-family: inherit;
+
+    &:focus {
+      outline: none;
+      border-bottom: 1px solid var(--md-sys-color-primary);
+    }
+  }
+
+  ul {
+    --scrollbar-color: var(--md-sys-color-surface-variant);
+
+    box-sizing: border-box;
+    margin: 0;
+    padding: 0;
+    padding-inline: 4px;
+    height: 100%;
+
+    overflow-y: auto;
+
+    scrollbar-gutter: both-edges stable;
+  }
+
+  .category {
+    .description {
+      opacity: 0.8;
+      margin-block-start: -16px;
+      font-style: italic;
+      font-size: 14px;
+    }
+    ul {
+      display: flex;
+      flex-wrap: wrap;
+      gap: 10px;
+      margin-block: 24px;
+      overflow: hidden;
+    }
+  }
+
+  li {
+    display: contents;
+  }
+
+  .exact {
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    margin-block-start: 8px;
+
+    border: 1px solid var(--md-sys-color-primary);
+    border-radius: 8px;
+
+    width: 100%;
+
+    > i {
+      display: flex;
+      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);
+    }
+
+    @media (forced-colors: active) {
+      background: Mark;
+    }
+  }
+</style>

src/lib/components/layout/ActionSelector.svelte

@@ -1,16 +1,5 @@
 <script lang="ts">
-  import {
+  import ActionList from "./ActionList.svelte";
-    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,
@@ -23,330 +12,34 @@
     onselect: (id: number) => void;
     onclose: () => void;
   } = $props();
-
-  onMount(() => {
-    searchBox.focus();
-  });
-
-  const index = new FlexSearch.Index({ tokenize: "full" });
-
-  $effect(() => {
-    createIndex($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 || ""} ${
-          action.description || ""
-        }`,
-      );
-    }
-  }
-
-  async function search() {
-    results = (await index!.searchAsync(searchBox.value)) as number[];
-    exact = get(KEYMAP_IDS).get(searchBox.value)?.code;
-    code = Number(searchBox.value);
-  }
-
-  function select(id?: number) {
-    if (id !== undefined) {
-      onselect(id);
-    }
-  }
-
-  function keyboardNavigation(event: KeyboardEvent) {
-    if (event.shiftKey && event.key === "Enter" && exact !== undefined) {
-      onselect(exact);
-    } else if (event.key === "ArrowDown") {
-      const element =
-        resultList.querySelector("li:focus-within")?.nextSibling ??
-        resultList.querySelector("li:not(.exact)");
-      if (element instanceof HTMLLIElement) {
-        element.querySelector("button")?.focus();
-      }
-    } else if (event.key === "ArrowUp") {
-      const element =
-        resultList.querySelector("li:focus-within")?.previousSibling ??
-        resultList.querySelector("li:not(.exact)");
-      if (element instanceof HTMLLIElement) {
-        element.querySelector("button")?.focus();
-      }
-    } else {
-      searchBox.focus();
-      return;
-    }
-    event.preventDefault();
-  }
-
-  let results: number[] = $state([]);
-  let exact: number | undefined = $state(undefined);
-  let code: number = $state(Number.NaN);
-
-  let searchBox: HTMLInputElement;
-  let resultList: HTMLUListElement;
-  let filter: Set<number> | undefined = $state(undefined);
 </script>
 
-<svelte:window on:keydown={keyboardNavigation} />
-
-<!-- svelte-ignore a11y_click_events_have_key_events -->
-<!-- svelte-ignore a11y_no_noninteractive_element_interactions -->
 <dialog
   open
   onclick={(event) => {
     if (event.target === event.currentTarget) onclose();
   }}
 >
-  <div class="content">
+  <ActionList
-    <div class="search-row">
+    autofocus={true}
-      <input
+    {currentAction}
-        type="search"
+    {nextAction}
-        bind:this={searchBox}
+    {onselect}
-        oninput={search}
+    {onclose}
-        onkeypress={(event) => {
+  />
-          if (event.key === "Enter") {
-            select(exact);
-          }
-        }}
-        placeholder={$LL.actionSearch.PLACEHOLDER()}
-      />
-      <button onclick={() => select(0)} use:action={{ shortcut: "shift+esc" }}
-        >{$LL.actionSearch.DELETE()}</button
-      >
-      <button
-        use:action={{ title: $LL.modal.CLOSE(), shortcut: "esc" }}
-        class="icon"
-        onclick={onclose}>close</button
-      >
-    </div>
-    <fieldset class="filters">
-      <label
-        >{$LL.actionSearch.filter.ALL()}<input
-          checked
-          name="category"
-          type="radio"
-          value={undefined}
-          bind:group={filter}
-        /></label
-      >
-      {#each $KEYMAP_CATEGORIES as category}
-        <label
-          >{category.name}<input
-            name="category"
-            type="radio"
-            value={new Set(Object.keys(category.actions).map(Number))}
-            bind:group={filter}
-          /></label
-        >
-      {/each}
-    </fieldset>
-    {#if currentAction !== undefined}
-      <aside>
-        <h3>{$LL.actionSearch.CURRENT_ACTION()}</h3>
-        <ActionListItem id={currentAction} />
-      </aside>
-      {#if nextAction}
-        <aside>
-          <h3>{$LL.actionSearch.NEXT_ACTION()}</h3>
-          <ActionListItem id={nextAction} />
-        </aside>
-      {/if}
-    {/if}
-    <ul bind:this={resultList}>
-      {#if exact !== undefined}
-        <li class="exact">
-          <i>Exact match</i>
-          <ActionListItem id={exact} onclick={() => select(exact)} />
-        </li>
-      {/if}
-      {#if !exact && code}
-        {#if code >= 2 ** 5 && code < 2 ** 13}
-          <li><button onclick={() => select(code)}>USE CODE</button></li>
-        {:else}
-          <li>Action code is out of range</li>
-        {/if}
-      {/if}
-      {#if filter !== undefined || results.length > 0}
-        {@const resultValue =
-          results.length === 0
-            ? Array.from($KEYMAP_CODES, ([it]) => it)
-            : results}
-        {#each filter ? resultValue.filter( (it) => filter.has(it), ) : resultValue as id (id)}
-          <li><ActionListItem {id} onclick={() => select(id)} /></li>
-        {/each}
-      {/if}
-    </ul>
-  </div>
 </dialog>
 
 <style lang="scss">
-  .filters {
-    display: flex;
-    gap: 4px;
-    border: none;
-
-    label {
-      height: unset;
-      padding-block: 2px;
-      padding-inline: 4px;
-
-      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);
-      }
-
-      input {
-        display: none;
-      }
-    }
-  }
-
   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;
-  }
-
-  aside {
-    pointer-events: none;
-
-    margin: 8px;
-
-    opacity: 0.4;
-    border: 1px dashed var(--md-sys-color-outline);
-    border-radius: 8px;
-
-    > h3 {
-      width: fit-content;
-      margin-block-start: -13px;
-      margin-block-end: 0;
-      margin-inline-start: 16px;
-      padding-inline: 8px;
-
-      background: var(--md-sys-color-background);
-    }
-
-    @media (prefers-contrast: more) {
-      opacity: 0.8;
-    }
-
-    @media (forced-colors: active) {
-      opacity: 1;
-      color: GrayText;
-    }
-  }
-
-  .search-row {
-    display: flex;
-    gap: 4px;
-    align-items: center;
-    margin-inline: 16px;
-  }
-
-  .content {
-    position: relative;
-    transform-origin: top left;
-
-    overflow: hidden;
-    display: flex;
-    flex-direction: column;
-
-    width: calc(min(30cm, 90%));
-    height: calc(min(100% - 128px, 90%));
-
-    color: var(--md-sys-color-on-background);
-
-    background: var(--md-sys-color-background);
-    border-radius: 16px;
-
-    @media (forced-colors: active) {
-      border: 1px solid CanvasText;
-    }
-  }
-
-  input[type="search"] {
     width: 100%;
-    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;
-
-    &:focus {
-      border-bottom: 1px solid var(--md-sys-color-primary);
-      outline: none;
-    }
-  }
-
-  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;
-  }
-
-  li {
-    display: contents;
-  }
-
-  .exact {
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    justify-content: center;
-
-    width: 100%;
-    margin-block-start: 8px;
-
-    border: 1px solid var(--md-sys-color-primary);
-    border-radius: 8px;
-
-    > i {
-      display: flex;
-      gap: 4px;
-      align-items: center;
-      justify-content: center;
-
-      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) {
-      background: Mark;
-    }
   }
 </style>

src/lib/components/layout/GenericLayout.svelte

@@ -1,24 +1,22 @@
 <script lang="ts">
-  import { compileLayout } from "$lib/serialization/visual-layout";
-  import type {
-    VisualLayout,
-    CompiledLayoutKey,
-  } from "$lib/serialization/visual-layout";
   import { deviceLayout } from "$lib/serial/connection";
   import { dev } from "$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";
+  import type {
+    CompiledLayout,
+    CompiledLayoutKey,
+  } from "$lib/assets/layouts/layout.d.ts";
 
   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
@@ -30,8 +28,7 @@
     console.assert(iconFontSize % 1 === 0, "Icon font size must be an integer");
   }
 
-  let { visualLayout }: { visualLayout: VisualLayout } = $props();
+  let { layoutInfo }: { layoutInfo: CompiledLayout } = $props();
-  let layoutInfo = $state(compileLayout(visualLayout));
 
   function getCenter(key: CompiledLayoutKey): [x: number, y: number] {
     return [key.pos[0] + key.size[0] / 2, key.pos[1] + key.size[1] / 2];
@@ -125,8 +122,10 @@
     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: {
@@ -142,6 +141,7 @@
                 type: ChangeType.Layout,
                 id: keyInfo.id,
                 layer: get(activeLayer),
+                profile: get(activeProfile),
                 action,
               },
             ]);
@@ -217,9 +217,9 @@
 
 <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

@@ -1,16 +1,16 @@
 <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";
+  import type { CompiledLayoutKey } from "$lib/assets/layouts/layout.d.ts";
   import { layout } from "$lib/undo-redo.js";
   import { osLayout } from "$lib/os-layout.js";
   import { KEYMAP_CODES } from "$lib/serial/keymap-codes";
-  import { action } from "$lib/title";
+  import { actionTooltip } from "$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",
   );
@@ -28,12 +28,19 @@
     middle: [number, number];
     pos: [number, number];
     rotate: number;
-    positions: [[number, number], [number, number], [number, number]];
+    positions: [
+      [number, number],
+      [number, number],
+      [number, number],
+      [number, number],
+    ];
   } = $props();
 </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,
   }}
@@ -65,9 +72,9 @@
       ? "0 0 0"
       : `${direction[0]?.toPrecision(2)}px ${direction[1]?.toPrecision(2)}px 0`}
     style:rotate="{rotate}deg"
-    use:action={{ title: tooltip }}
+    {@attach actionTooltip(tooltip)}
   >
-    {#if code !== 0}
+    {#if code !== 0 && code != 1023}
       {dynamicMapping || icon || display || id || `0x${code.toString(16)}`}
     {/if}
     {#if !isApplied}
@@ -81,15 +88,15 @@
   $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;

src/lib/components/layout/KeyboardKey.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-  import type { CompiledLayoutKey } from "$lib/serialization/visual-layout";
+  import type { CompiledLayoutKey } from "$lib/assets/layouts/layout.d.ts";
   import { getContext } from "svelte";
   import type { VisualLayoutConfig } from "./visual-layout.js";
   import KeyText from "$lib/components/layout/KeyText.svelte";
@@ -64,6 +64,7 @@
         [-1, 1],
         [-1, -1],
         [1, -1],
+        [1, 1],
       ]}
     />
   {:else if key.shape === "quarter-circle"}
@@ -103,6 +104,7 @@
         [-rotY, -rotX],
         [-rotX, -rotY],
         [rotX, rotY],
+        [rotY, rotX],
       ]}
     />
   {/if}
@@ -113,14 +115,14 @@
   $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,
@@ -138,15 +140,15 @@
 
   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

@@ -1,67 +1,71 @@
 <script lang="ts">
   import { deviceMeta, serialPort } from "$lib/serial/connection";
-  import { action } from "$lib/title";
+  import { actionTooltip } 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, fly } from "svelte/transition";
   import { restoreFromFile } from "$lib/backup/backup";
+  import type { CompiledLayout } from "$lib/assets/layouts/layout.d.ts";
 
-  let device = $derived($serialPort?.device);
+  const layouts: Record<string, (() => Promise<CompiledLayout>) | undefined> = {
-  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: () =>
-      import("$lib/assets/layouts/one.yml").then(
+      import("$lib/assets/layouts/one.layout.yml").then(
-        (it) => it.default as VisualLayout,
+        (it) => it.default as CompiledLayout,
       ),
     TWO: () =>
-      import("$lib/assets/layouts/one.yml").then(
+      import("$lib/assets/layouts/one.layout.yml").then(
-        (it) => it.default as VisualLayout,
+        (it) => it.default as CompiledLayout,
       ),
     LITE: () =>
-      import("$lib/assets/layouts/lite.yml").then(
+      import("$lib/assets/layouts/lite.layout.yml").then(
-        (it) => it.default as VisualLayout,
+        (it) => it.default as CompiledLayout,
       ),
     X: () =>
-      import("$lib/assets/layouts/generic/103-key.yml").then(
+      import("$lib/assets/layouts/103-key.layout.yml").then(
-        (it) => it.default as VisualLayout,
+        (it) => it.default as CompiledLayout,
+      ),
+    ZERO: () =>
+      import("$lib/assets/layouts/103-key.layout.yml").then(
+        (it) => it.default as CompiledLayout,
       ),
     M4G: () =>
-      import("$lib/assets/layouts/m4g.yml").then(
+      import("$lib/assets/layouts/m4g.layout.yml").then(
-        (it) => it.default as VisualLayout,
+        (it) => it.default as CompiledLayout,
       ),
     M4GR: () =>
-      import("$lib/assets/layouts/m4gr.yml").then(
+      import("$lib/assets/layouts/m4gr.layout.yml").then(
-        (it) => it.default as VisualLayout,
+        (it) => it.default as CompiledLayout,
+      ),
+    T4G: () =>
+      import("$lib/assets/layouts/t4g.layout.yml").then(
+        (it) => it.default as CompiledLayout,
       ),
   };
 </script>
 
 <div class="container">
-  {#if device}
+  {#if $serialPort}
-    {#await layouts[device]() then visualLayout}
+    {#await layouts[$serialPort.device]?.() then layoutInfo}
       <fieldset transition:fade>
-        {#each layers as [title, icon, value]}
+        <div class="layers">
-          <button
+          {#each Array.from({ length: $serialPort.layerCount }, (_, i) => i) as layer}
-            class="icon"
+            <label>
-            use:action={{ title, shortcut: `alt+${value + 1}` }}
+              <input
-            onclick={() => ($activeLayer = value)}
+                type="radio"
-            class:active={$activeLayer === value}
+                onclick={() => ($activeLayer = layer)}
-          >
+                name="layer"
-            {icon}
+                value={layer}
-          </button>
+                checked={$activeLayer === layer}
-        {/each}
+              />
+              {String.fromCodePoint(
+                "A".codePointAt(0)! + $activeProfile,
+              )}{layer + 1}
+            </label>
+          {/each}
+        </div>
         {#if $deviceMeta?.factoryDefaults?.layout}
           <button
-            use:action={{ title: "Reset Layout" }}
+            {@attach actionTooltip("Reset Layout")}
             transition:fly={{ x: -8 }}
             class="icon reset-layout"
             onclick={() =>
@@ -71,7 +75,9 @@
         {/if}
       </fieldset>
 
-      <GenericLayout {visualLayout} />
+      {#if layoutInfo}
+        <GenericLayout {layoutInfo} />
+      {/if}
     {/await}
   {/if}
 </div>
@@ -80,8 +86,8 @@
   .container {
     display: flex;
     flex-direction: column;
-    align-items: center;
     justify-content: center;
+    align-items: center;
 
     width: 100%;
     height: 100%;
@@ -89,71 +95,23 @@
   }
 
   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,
-    &:nth-child(3) {
-      aspect-ratio: unset;
-      height: unset;
-    }
-
-    &:first-child {
-      margin-inline-end: -8px;
-      padding-inline: 4px 24px;
-      border-radius: 16px 0 0 16px;
-    }
-
-    &:nth-child(3) {
-      margin-inline-start: -8px;
-      padding-inline: 24px 4px;
-      border-radius: 0 16px 16px 0;
-    }
-
-    &.reset-layout {
-      position: absolute;
-      top: 50%;
-      right: 0;
-      transform: translate(100%, -50%);
-      background: none;
-      font-size: 24px;
-    }
-
-    &.active {
-      font-weight: 900;
-      color: var(--md-sys-color-on-tertiary);
-      background: var(--md-sys-color-tertiary);
-    }
   }
 </style>

src/lib/components/verbose-action.ts

@@ -0,0 +1,9 @@
+import type { KeyInfo } from "$lib/serial/keymap-codes";
+
+export function isVerbose(info: KeyInfo) {
+  return (
+    info.id?.length !== 1 &&
+    info.title &&
+    (!info.id || /F\d{1,2}/.test(info.id) === false)
+  );
+}

src/lib/dialogs/ConnectionFailed.svelte

@@ -83,9 +83,9 @@
 
 <style lang="scss">
   h1 {
+    color: var(--md-sys-color-error);
     font-size: 2em;
     text-align: center;
-    color: var(--md-sys-color-error);
   }
 
   .buttons {
@@ -100,7 +100,7 @@
 
   a {
     display: inline;
-    color: var(--md-sys-color-primary);
     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/PickChangesDialog.svelte

@@ -1,217 +0,0 @@
-<script lang="ts">
-  import Dialog from "$lib/dialogs/Dialog.svelte";
-  import type {
-    Change,
-    ChordChange,
-    LayoutChange,
-    SettingChange,
-  } from "$lib/undo-redo";
-  import { ChangeType, chords } from "$lib/undo-redo";
-  import ActionString from "$lib/components/ActionString.svelte";
-  import LL from "$i18n/i18n-svelte";
-  import { KEYMAP_IDS } from "$lib/serial/keymap-codes";
-
-  export let changes: Change[] = [
-    { type: ChangeType.Layout, layer: 0, id: 1, action: 1 },
-    { type: ChangeType.Layout, layer: 1, id: 1, action: 1 },
-    { type: ChangeType.Layout, layer: 1, id: 1, action: 1 },
-    { type: ChangeType.Layout, layer: 1, id: 1, action: 1 },
-    { type: ChangeType.Layout, layer: 1, id: 1, action: 1 },
-    { type: ChangeType.Layout, layer: 1, id: 1, action: 1 },
-    { type: ChangeType.Layout, layer: 1, id: 1, action: 1 },
-    { type: ChangeType.Layout, layer: 1, id: 1, action: 1 },
-    { type: ChangeType.Layout, layer: 1, id: 1, action: 1 },
-    { type: ChangeType.Layout, layer: 1, id: 1, action: 1 },
-    { type: ChangeType.Setting, id: 0, setting: 2 },
-    { type: ChangeType.Setting, id: 0, setting: 2 },
-    { type: ChangeType.Setting, id: 0, setting: 2 },
-    { type: ChangeType.Setting, id: 0, setting: 2 },
-    {
-      type: ChangeType.Chord,
-      id: [1],
-      actions: [55],
-      phrase: [55, 63, 37, 36],
-    },
-    {
-      type: ChangeType.Chord,
-      id: [
-        KEYMAP_IDS.get("y")!.code,
-        KEYMAP_IDS.get("r")!.code,
-        KEYMAP_IDS.get("t")!.code,
-      ],
-      actions: [
-        KEYMAP_IDS.get("y")!.code,
-        KEYMAP_IDS.get("r")!.code,
-        KEYMAP_IDS.get("t")!.code,
-      ],
-      phrase: [55, 63, 37, 36],
-    },
-    {
-      type: ChangeType.Chord,
-      id: [
-        KEYMAP_IDS.get("y")!.code,
-        KEYMAP_IDS.get("r")!.code,
-        KEYMAP_IDS.get("t")!.code,
-      ],
-      actions: [
-        KEYMAP_IDS.get("y")!.code,
-        KEYMAP_IDS.get("r")!.code,
-        KEYMAP_IDS.get("t")!.code,
-      ],
-      phrase: [],
-    },
-  ];
-
-  $: existingChords = new Set($chords.map((it) => JSON.stringify(it.id)));
-
-  $: layoutChanges = Array.from(
-    { length: 3 },
-    (_, i) =>
-      changes.filter(
-        (it) => it.type === ChangeType.Layout && it.layer === i,
-      ) as LayoutChange[],
-  );
-  $: settingChanges = changes.filter(
-    (it) => it.type === ChangeType.Setting,
-  ) as SettingChange[];
-  $: chordChanges = {
-    added: changes.filter(
-      (it) =>
-        it.type === ChangeType.Chord &&
-        it.phrase.length > 0 &&
-        !existingChords.has(JSON.stringify(it.id)),
-    ) as ChordChange[],
-    changed: changes.filter(
-      (it) =>
-        it.type === ChangeType.Chord &&
-        it.phrase.length > 0 &&
-        existingChords.has(JSON.stringify(it.id)),
-    ) as ChordChange[],
-    deleted: changes.filter(
-      (it) => it.type === ChangeType.Chord && it.phrase.length === 0,
-    ) as ChordChange[],
-  };
-  $: totalChordChanges = Object.values(chordChanges).reduce(
-    (acc, curr) => acc + curr.length,
-    0,
-  );
-</script>
-
-<Dialog>
-  <h1>{$LL.changes.TITLE()}</h1>
-  <h2>
-    <label
-      ><input
-        type="checkbox"
-        class="checkbox"
-      />{$LL.changes.ALL_CHANGES()}</label
-    >
-  </h2>
-  <ul>
-    {#if layoutChanges.some((it) => it.length > 0)}
-      <li>
-        <h3>
-          <label>
-            <input type="checkbox" class="checkbox" />
-            {$LL.changes.layout.TITLE(
-              layoutChanges.reduce((acc, curr) => acc + curr.length, 0),
-            )}
-          </label>
-        </h3>
-        <ul>
-          {#each layoutChanges as changes, i}
-            {@const layer = i + 1}
-            {#if changes.length > 0}
-              <li>
-                <h4>
-                  <label>
-                    <input type="checkbox" class="checkbox" />
-                    {$LL.changes.layout.LAYER({
-                      changes: changes.length,
-                      layer,
-                    })}
-                  </label>
-                </h4>
-              </li>
-            {/if}
-          {/each}
-        </ul>
-      </li>
-    {/if}
-    {#if settingChanges.length > 0}
-      <li>
-        <h3>
-          <label
-            ><input
-              type="checkbox"
-              class="checkbox"
-            />{$LL.changes.settings.TITLE(settingChanges.length)}</label
-          >
-        </h3>
-      </li>
-    {/if}
-    {#if totalChordChanges > 0}
-      <li>
-        <h3>
-          <label
-            ><input
-              type="checkbox"
-              class="checkbox"
-            />{$LL.changes.chords.TITLE(totalChordChanges)}</label
-          >
-        </h3>
-        <ul>
-          {#each Object.entries(chordChanges) as [category, changes]}
-            {#if changes.length > 0}
-              <li>
-                <h4>
-                  <label
-                    ><input type="checkbox" class="checkbox" />
-                    {#if category === "added"}
-                      {$LL.changes.chords.NEW_CHORDS(changes.length)}
-                    {:else if category === "changed"}
-                      {$LL.changes.chords.CHANGED_CHORDS(changes.length)}
-                    {:else if category === "deleted"}
-                      {$LL.changes.chords.DELETED_CHORDS(changes.length)}
-                    {/if}
-                  </label>
-                </h4>
-                <ul>
-                  {#each changes as change}
-                    <li>
-                      <label>
-                        <input type="checkbox" class="checkbox" />
-                        <ActionString display="keys" actions={change.actions} />
-                        <ActionString actions={change.phrase} />
-                      </label>
-                    </li>
-                  {/each}
-                </ul>
-              </li>
-            {/if}
-          {/each}
-        </ul>
-      </li>
-    {/if}
-  </ul>
-</Dialog>
-
-<style lang="scss">
-  h1 {
-    font-size: 2em;
-    text-align: center;
-  }
-
-  h2 {
-    font-size: 1.5em;
-  }
-
-  ul {
-    padding-inline-start: 0;
-    list-style: none;
-  }
-
-  li {
-    margin-inline-start: 24px;
-  }
-</style>

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("mouseleave", 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("mouseleave", hide);
+      node.removeEventListener("blur", hide);
+
+      if (shortcut && node instanceof HTMLElement) {
+        hotkeys.delete(shortcut);
+      }
+    };
+  };
+}

src/lib/learn/chords.ts

@@ -1,101 +0,0 @@
-import { osLayout } from "$lib/os-layout";
-import { KEYMAP_CODES } from "$lib/serial/keymap-codes";
-import { persistentWritable } from "$lib/storage";
-import { type ChordInfo, chords } from "$lib/undo-redo";
-import { derived } from "svelte/store";
-
-export const words = derived(
-  [chords, osLayout],
-  ([chords, layout]) =>
-    new Map<string, ChordInfo>(
-      chords
-        .map((chord) => ({
-          chord,
-          output: chord.phrase.map((action) =>
-            layout.get(KEYMAP_CODES.get(action)?.keyCode ?? ""),
-          ),
-        }))
-        .filter(({ output }) => output.every((it) => !!it))
-        .map(({ chord, output }) => [output.join("").trim(), chord] as const),
-    ),
-);
-
-interface Score {
-  lastTyped: number;
-  score: number;
-  total: number;
-}
-
-export const scores = persistentWritable<Record<string, Score>>("scores", {});
-
-export const learnConfigDefault = {
-  maxScore: 3,
-  minScore: -3,
-  scoreBlend: 0.5,
-  weakRate: 0.8,
-  weakBoost: 0.5,
-  maxWeak: 3,
-  newRate: 0.3,
-  initialNewRate: 0.9,
-  initialCount: 10,
-};
-export const learnConfigStored = persistentWritable<
-  Partial<typeof learnConfigDefault>
->("learn-config", {});
-export const learnConfig = derived(learnConfigStored, (config) => ({
-  ...learnConfigDefault,
-  ...config,
-}));
-
-let lastWord: string | undefined;
-
-function shuffle<T>(array: T[]): 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]!];
-  }
-  return array;
-}
-
-function randomLog2<T>(array: T[], max = array.length): T | undefined {
-  return array[
-    Math.floor(Math.pow(2, Math.log2(Math.random() * Math.log2(max))))
-  ];
-}
-
-export const nextWord = derived(
-  [words, scores, learnConfig],
-  ([words, scores, config]) => {
-    const values = Object.entries(scores).filter(([it]) => it !== lastWord);
-
-    values.sort(([, a], [, b]) => a.score - b.score);
-    const weakCount =
-      (values.findIndex(([, { score }]) => score > 0) + 1 ||
-        values.length + 1) - 1;
-    const weak = randomLog2(values, weakCount);
-    if (weak && Math.random() / weakCount < config.weakRate) {
-      lastWord = weak[0];
-      return weak[0];
-    }
-
-    values.sort(([, { lastTyped: a }], [, { lastTyped: b }]) => a - b);
-    const recent = randomLog2(values);
-    const newRate =
-      values.length < config.initialCount
-        ? config.initialNewRate
-        : config.newRate;
-    if (
-      recent &&
-      (Math.random() < Math.min(1, Math.max(0, weakCount / config.maxWeak)) ||
-        Math.random() > newRate)
-    ) {
-      lastWord = recent[0];
-      return recent[0];
-    }
-
-    const newWord = shuffle(Array.from(words.keys())).find((it) => !scores[it]);
-    const word = newWord || recent?.[0] || weak?.[0];
-    lastWord = word;
-    return word;
-  },
-);

src/lib/learn/stats.ts

@@ -1,11 +0,0 @@
-import { persistentWritable } from "$lib/storage";
-
-interface ChordStats {
-  level: number;
-  lastUprank: number;
-}
-
-export const chordStats = persistentWritable<Record<string, ChordStats>>(
-  "chord-stats",
-  {},
-);

src/lib/meta/meta-storage.ts

@@ -17,7 +17,7 @@ export async function getMeta(
   try {
     if (!browser) return fetchMeta(device, version, fetch);
 
-    const dbRequest = indexedDB.open("version-meta", 3);
+    const dbRequest = indexedDB.open("version-meta", 6);
     const db = await new Promise<IDBDatabase>((resolve, reject) => {
       dbRequest.onsuccess = () => resolve(dbRequest.result);
       dbRequest.onerror = () => reject(dbRequest.error);
@@ -120,6 +120,9 @@ async function fetchMeta(
             }
             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[]>(
@@ -127,6 +130,9 @@ async function fetchMeta(
             async (load) => load().then((it) => (it as any).default),
           ),
         )),
+    recipes: await (meta?.recipes
+      ? fetch(`${path}/${meta.recipes}`).then((it) => it.json())
+      : undefined),
     update: {
       uf2:
         meta?.update?.uf2 ??
@@ -141,6 +147,10 @@ async function fetchMeta(
         )?.name ??
         undefined,
       esptool: meta?.update?.esptool ?? undefined,
+      js: meta?.update?.js ?? undefined,
+      wasm: meta?.update?.wasm ?? undefined,
+      dll: meta?.update?.dll ?? undefined,
+      so: meta?.update?.so ?? undefined,
     },
     spiFlash: meta?.spi_flash ?? undefined,
   };

src/lib/meta/types/meta.ts

@@ -13,6 +13,7 @@ export interface SettingsMeta {
 
 export interface SettingsItemMeta {
   id: number;
+  name?: string;
   description?: string;
   enum?: string[];
   range: [number, number];
@@ -22,6 +23,16 @@ export interface SettingsItemMeta {
   scale?: number;
 }
 
+export interface ChangelogEntry {
+  summary: string;
+  description: string;
+}
+
+export interface Changelog {
+  features: ChangelogEntry[];
+  fixes: ChangelogEntry[];
+}
+
 export interface RawVersionMeta {
   version: string;
   target: string;
@@ -32,6 +43,8 @@ export interface RawVersionMeta {
   development_mode: number;
   actions: string;
   settings: string;
+  changelog: string;
+  recipes: string;
   factory_defaults: {
     layout: string;
     settings: string;
@@ -41,11 +54,48 @@ export interface RawVersionMeta {
     ota: string | null;
     uf2: string | null;
     esptool: EspToolData | null;
+    js: string | null;
+    wasm: string | null;
+    dll: string | null;
+    so: string | null;
   };
   files: string[];
   spi_flash: SPIFlashInfo | null;
 }
 
+export interface E2eAddChord {
+  input: string[][];
+  output: string[];
+}
+
+export interface E2eTestItem {
+  keys?: string[];
+  modifiers?: Record<string, boolean>;
+  press?: string[];
+  release?: string[];
+  step?: number;
+  skip?: number;
+  idle?: boolean;
+  clearChords?: boolean;
+  addChords?: E2eAddChord[];
+  settings: Record<string, Record<string, string | number>>;
+}
+
+export interface E2eTest {
+  matrix?: string[];
+  test: E2eTestItem[];
+}
+
+export interface E2eDemo {
+  demo?: {
+    id?: string;
+    title?: string;
+    description?: string;
+  };
+  matrix?: string[];
+  tests: E2eTest[];
+}
+
 export interface VersionMeta {
   version: string;
   device: string;
@@ -57,6 +107,8 @@ export interface VersionMeta {
   developmentBuild: boolean;
   actions: KeymapCategory[];
   settings: SettingsMeta[];
+  changelog: Changelog;
+  recipes?: E2eDemo[];
   factoryDefaults?: {
     layout: CharaLayoutFile;
     settings: CharaSettingsFile;
@@ -66,6 +118,10 @@ export interface VersionMeta {
     ota?: string;
     uf2?: string;
     esptool?: EspToolData;
+    js?: string;
+    wasm?: string;
+    dll?: string;
+    so?: string;
   };
   spiFlash?: SPIFlashInfo;
 }

src/lib/os-layout.ts

@@ -11,6 +11,7 @@ async function updateLayout() {
     layout.size !== currentLayout.size ||
     [...layout.keys()].some((key) => layout.get(key) !== currentLayout.get(key))
   ) {
+    console.log(layout);
     osLayout.set(layout);
   }
 }

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

@@ -1,5 +1,5 @@
 import { get, writable } from "svelte/store";
-import { CharaDevice } from "$lib/serial/device";
+import { CharaDevice, type SerialPortLike } from "$lib/serial/device";
 import type { Chord } from "$lib/serial/chord";
 import type { Writable } from "svelte/store";
 import type { CharaLayout } from "$lib/serialization/layout";
@@ -10,6 +10,10 @@ import type { VersionMeta } from "$lib/meta/types/meta";
 
 export const serialPort = writable<CharaDevice | undefined>();
 
+navigator.serial?.addEventListener("disconnect", async (event) => {
+  serialPort.set(undefined);
+});
+
 export interface SerialLogEntry {
   type: "input" | "output" | "system";
   value: string;
@@ -29,21 +33,24 @@ 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");
@@ -56,9 +63,13 @@ export interface ProgressInfo {
 }
 export const syncProgress = writable<ProgressInfo | undefined>(undefined);
 
-export async function initSerial(manual = false, withSync = true) {
+export async function initSerial(port: SerialPortLike, withSync: boolean) {
-  const device = get(serialPort) ?? new CharaDevice();
+  const prev = get(serialPort);
-  await device.init(manual);
+  try {
+    prev?.close();
+  } catch {}
+  const device = new CharaDevice(port);
+  await device.init();
   serialPort.set(device);
   if (withSync) {
     await sync();
@@ -80,30 +91,49 @@ export async function sync() {
     .map((it) => it.items.length)
     .reduce((a, b) => a + b, 0);
 
-  const max = maxSettings + device.keyCount * 3 + chordCount;
+  const max =
+    (maxSettings + device.keyCount * device.layerCount) * device.profileCount +
+    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 category of meta.settings) {
+    { length: device.profileCount },
-    for (const setting of category.items) {
+    () => [],
-      try {
+  );
-        parsedSettings[setting.id] = await device.getSetting(setting.id);
+  for (const [profile, settings] of parsedSettings.entries()) {
-      } catch {}
+    for (const category of meta.settings) {
+      for (const setting of category.items) {
+        try {
+          settings[setting.id] = await device.getSetting(profile, setting.id);
+        } catch {}
+      }
+      progressTick();
     }
-    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,
@@ -10,24 +9,66 @@ import {
 } 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([
+export 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 }],
+  ["T4G S2", { usbProductId: 0x82f2, usbVendorId: 0x303a }],
 ]);
 
+const DEVICE_ALIASES = new Map<string, Set<string>>([
+  ["CC1", new Set(["ONE M0", "one_m0"])],
+  ["CC2", new Set(["TWO S3", "two_s3", "TWO S3 (pre-production)"])],
+  ["Lite (S2)", new Set(["LITE S2", "lite_s2"])],
+  ["Lite (M0)", new Set(["LITE M0", "lite_m0"])],
+  ["CCX", new Set(["X", "ccx"])],
+  ["M4G", new Set(["M4G S3", "m4g_s3", "M4G S3 (pre-production)"])],
+  ["M4G (right)", new Set(["M4GR S3", "m4gr_s3"])],
+  ["T4G", new Set(["T4G S2", "t4g_s2"])],
+]);
+
+export function getName(alias: string): string {
+  for (const [name, aliases] of DEVICE_ALIASES.entries()) {
+    if (aliases.has(alias)) {
+      return name;
+    }
+  }
+  return alias;
+}
+
+export function getPortName(port: SerialPort): string {
+  const { usbProductId, usbVendorId } = port.getInfo();
+  console.log(port.getInfo());
+  for (const [name, filter] of PORT_FILTERS.entries()) {
+    if (
+      filter.usbProductId === usbProductId &&
+      filter.usbVendorId === usbVendorId
+    ) {
+      return getName(name);
+    }
+  }
+  return `Unknown Device (0x${usbVendorId?.toString(
+    16,
+  )}/0x${usbProductId?.toString(16)})`;
+}
+
 const KEY_COUNTS = {
   ONE: 90,
   TWO: 90,
   LITE: 67,
   X: 256,
+  ENGINE: 256,
   M4G: 90,
   M4GR: 90,
+  T4G: 7,
+  ZERO: 256,
 } as const;
 
 if (
@@ -85,8 +126,12 @@ async function timeout<T>(promise: Promise<T>, ms: number): Promise<T> {
   ]).finally(() => clearTimeout(timer));
 }
 
+export type SerialPortLike = Pick<
+  SerialPort,
+  "readable" | "writable" | "open" | "close" | "getInfo" | "forget"
+>;
+
 export class CharaDevice {
-  private port!: SerialPort;
   private reader!: ReadableStreamDefaultReader<string>;
 
   private readonly abortController1 = new AbortController();
@@ -99,28 +144,25 @@ export class CharaDevice {
   private readonly suspendDebounce = 100;
   private suspendDebounceId?: number;
 
-  version!: SemVer;
+  version!: string;
   company!: "CHARACHORDER" | "FORGE";
-  device!: "ONE" | "TWO" | "LITE" | "X" | "M4G";
+  device!: "ONE" | "TWO" | "LITE" | "X" | "M4G" | "ENGINE" | "ZERO";
-  chipset!: "M0" | "S2" | "S3";
+  chipset!: "M0" | "S2" | "S3" | "WASM";
   keyCount!: 90 | 67 | 256;
+  layerCount = 3;
+  profileCount = 1;
 
   get portInfo() {
     return this.port.getInfo();
   }
 
-  constructor(private readonly baudRate = 115200) {}
+  constructor(
+    readonly port: SerialPortLike,
+    public baudRate = 115200,
+  ) {}
 
-  async init(manual = false) {
+  async init() {
     try {
-      const ports = await getViablePorts();
-      this.port =
-        !manual && ports.length === 1
-          ? ports[0]!
-          : await navigator.serial.requestPort({
-              filters: [...PORT_FILTERS.values()],
-            });
-
       await this.port.open({ baudRate: this.baudRate });
       const info = this.port.getInfo();
       serialLog.update((it) => {
@@ -134,13 +176,19 @@ 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"]);
       this.company = company as typeof this.company;
       this.device = device as typeof this.device;
       this.chipset = chipset as typeof this.chipset;
+      if (semverGte(this.version, "2.2.0-beta.4") && this.chipset !== "M0") {
+        this.profileCount = 3;
+      }
+      if (semverGte(this.version, "2.2.0-beta.20") && this.chipset !== "M0") {
+        this.layerCount = 4;
+      }
       this.keyCount = KEY_COUNTS[this.device];
     } catch (e) {
       console.error(e);
@@ -234,6 +282,10 @@ export class CharaDevice {
     await this.port.forget();
   }
 
+  async close() {
+    await this.port.close();
+  }
+
   /**
    * Read/write to serial port
    */
@@ -290,23 +342,24 @@ export class CharaDevice {
         .join(" ")
         .replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
       const readResult = await read(timeout);
-      if (readResult === undefined) {
+      return readResult
+        ?.replace(new RegExp(`^${commandString} `), "")
+        .split(" ");
+    }).then((it) => {
+      if (it === undefined) {
         console.error("No response");
         return Array(expectedLength).fill("NO_RESPONSE") as LengthArray<
           string,
           T
         >;
       }
-      const array = readResult
+      if (it.length < expectedLength) {
-        .replace(new RegExp(`^${commandString} `), "")
-        .split(" ");
-      if (array.length < expectedLength) {
         console.error("Response too short");
-        return array.concat(
+        return it.concat(
-          Array(expectedLength - array.length).fill("TOO_SHORT"),
+          Array(expectedLength - it.length).fill("TOO_SHORT"),
         ) as LengthArray<string, T>;
       }
-      return array as LengthArray<string, T>;
+      return it as LengthArray<string, T>;
     });
   }
 
@@ -349,7 +402,7 @@ export class CharaDevice {
       stringifyChordActions(chord.actions),
       stringifyPhrase(chord.phrase),
     ]);
-    if (status !== "0") console.error(`Failed with status ${status}`);
+    if (status !== "0") throw new Error(`Failed with status ${status}`);
   }
 
   async deleteChord(chord: Pick<Chord, "actions">) {
@@ -368,11 +421,16 @@ 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(
+    profile: number,
+    layer: number,
+    id: number,
+    action: number,
+  ) {
     const [status] = await this.send(1, [
       "VAR",
       "B4",
-      `A${layer}`,
+      `${String.fromCodePoint("A".codePointAt(0)! + profile)}${layer}`,
       id.toString(),
       action.toString(),
     ]);
@@ -385,11 +443,11 @@ export class CharaDevice {
    * @param id id of the key, refer to the individual device for where each key is
    * @returns the assigned action id
    */
-  async getLayoutKey(layer: number, id: number) {
+  async getLayoutKey(profile: number, layer: number, id: number) {
     const [position, status] = await this.send(2, [
       "VAR",
       "B3",
-      `A${layer}`,
+      `${String.fromCodePoint("A".codePointAt(0)! + profile)}${layer}`,
       id.toString(),
     ]);
     if (status !== "0") throw new Error(`Failed with status ${status}`);
@@ -414,11 +472,11 @@ 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(1, [
       "VAR",
       "B2",
-      id.toString(16).toUpperCase(),
+      (id + profile * 0x100).toString(16).toUpperCase(),
       value.toString(),
     ]);
     if (status !== "0") throw new Error(`Failed with status ${status}`);
@@ -427,11 +485,11 @@ export class CharaDevice {
   /**
    * 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(2, [
       "VAR",
       "B1",
-      id.toString(16).toUpperCase(),
+      (id + profile * 0x100).toString(16).toUpperCase(),
     ]);
     if (status !== "0")
       throw new Error(

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/base64.ts

@@ -29,5 +29,10 @@ export async function fromBase64(
       .replaceAll(".", "+")
       .replaceAll("_", "/")
       .replaceAll("-", "=")}`,
-  ).then((it) => it.blob());
+  )
+    .then((it) => {
+      console.log(it);
+      return it;
+    })
+    .then((it) => it.blob());
 }

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")
@@ -19,30 +107,42 @@ 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;
@@ -58,6 +158,23 @@ export const setting: Action<
             ? value / scale
             : value,
       );
+    } else if (isColor) {
+      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;
     }
@@ -68,6 +185,7 @@ export const setting: Action<
           type: ChangeType.Setting,
           id: id,
           setting: value,
+          profile: get(activeProfile),
         },
       ]);
       return changes;
@@ -79,7 +197,7 @@ export const setting: Action<
   return {
     destroy() {
       node.removeEventListener("change", listener);
-      unsubscribe();
+      subscription.unsubscribe();
     },
   };
 };

src/lib/style/_kbd.scss

@@ -1,18 +1,23 @@
 kbd {
   display: inline-flex;
-  align-items: center;
   justify-content: center;
-
+  align-items: center;
-  height: 20px;
   margin-block: 6px;
+  border-radius: 4px;
+
+  //border: 1px solid currentcolor;
+  background: color-mix(
+    in srgb,
+    var(--md-sys-color-surface-variant) 50%,
+    transparent
+  );
   padding: 4px;
 
-  font-size: 14px;
+  height: 20px;
-  font-weight: normal;
   color: currentcolor;
+  font-weight: normal;
 
-  border: 1px solid currentcolor;
+  font-size: 14px;
-  border-radius: 4px;
 
   &.icon {
     padding: 2px;
@@ -21,8 +26,8 @@ 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

@@ -5,31 +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;
+  font-weight: 600;
-  padding-inline: 16px;
 
   font-family: inherit;
-  font-weight: 600;
-  border-radius: 32px;
-  transition: all 250ms ease;
 
   @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);
     }
   }
 
@@ -40,17 +39,17 @@ button {
 
   &.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;
     }
   }
 
@@ -88,8 +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

@@ -2,34 +2,35 @@
 
 @use "form/button";
 @use "form/toggle";
-@use "form/checkbox";
+@use "form/radio";
 
 @use "kbd";
 @use "print";
 
 @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

@@ -1,43 +1,43 @@
-import type { Action } from "svelte/action";
 import tippy from "tippy.js";
-import { mount, unmount, type SvelteComponent } from "svelte";
+import { mount, unmount, type Snippet } from "svelte";
 import Tooltip from "$lib/components/Tooltip.svelte";
+import type { Attachment } from "svelte/attachments";
 
 export const hotkeys = new Map<string, HTMLElement>();
 
-export const action: Action<Element, { title?: string; shortcut?: string }> = (
+export function actionTooltip(
-  node: Element,
+  title: string | Snippet,
-  { title, shortcut },
+  shortcut?: string,
-) => {
+): Attachment<Element> {
-  let component: {} | undefined;
+  return (node: Element) => {
-  const tooltip = tippy(node, {
+    let component: {} | undefined;
-    arrow: false,
+    const tooltip = tippy(node, {
-    theme: "tooltip",
+      arrow: false,
-    animation: "fade",
+      theme: "tooltip",
-    onShow(instance) {
+      animation: "fade",
-      component ??= mount(Tooltip, {
+      onShow(instance) {
-        target: instance.popper.querySelector(".tippy-content") as Element,
+        component ??= mount(Tooltip, {
-        props: { title, shortcut },
+          target: instance.popper.querySelector(".tippy-content") as Element,
-      });
+          props: { shortcut, title },
-    },
+        });
-    onHidden() {
+      },
-      if (component) {
+      onHidden() {
-        unmount(component);
+        if (component) {
-        component = undefined;
+          unmount(component);
-      }
+          component = undefined;
-    },
+        }
-  });
+      },
+    });
 
-  if (shortcut && node instanceof HTMLElement) {
+    if (shortcut && node instanceof HTMLElement) {
-    hotkeys.set(shortcut, node);
+      hotkeys.set(shortcut, node);
-  }
+    }
 
-  return {
+    return () => {
-    destroy() {
       tooltip.destroy();
       if (shortcut && node instanceof HTMLElement) {
         hotkeys.delete(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 {
@@ -45,23 +47,29 @@ export type Change = LayoutChange | ChordChange | SettingChange;
 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 changeset of changes) {
     for (const change of changeset) {
       switch (change.type) {
         case ChangeType.Layout:
-          overlay.layout[change.layer]?.set(change.id, change.action);
+          change.profile ??= 0;
+          overlay.layout[change.profile] ??= [];
+          overlay.layout[change.profile]![change.layer] ??= new Map();
+          overlay.layout[change.profile]![change.layer]!.set(
+            change.id,
+            change.action,
+          );
           break;
         case ChangeType.Chord:
           overlay.chords.set(JSON.stringify(change.id), {
@@ -71,7 +79,9 @@ export const overlay = derived(changes, (changes) => {
           });
           break;
         case ChangeType.Setting:
-          overlay.settings.set(change.id, change.setting);
+          change.profile ??= 0;
+          overlay.settings[change.profile] ??= new Map();
+          overlay.settings[change.profile]!.set(change.id, change.setting);
           break;
       }
     }
@@ -82,21 +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],
+    ),
   ),
 );
 
@@ -165,6 +179,22 @@ export const chords = derived(
   },
 );
 
+export const duplicateChords = derived(chords, (chords) => {
+  const duplicates = new Set<string>();
+  const seen = new Set<string>();
+
+  for (const chord of chords) {
+    const key = JSON.stringify(chord.actions);
+    if (seen.has(key)) {
+      duplicates.add(key);
+    } else {
+      seen.add(key);
+    }
+  }
+
+  return duplicates;
+});
+
 export const chordHashes = derived(
   chords,
   (chords) =>