search-with-chatgpt-powered-by-openai-extension/docs/superpowers/plans/2026-07-30-extension-options-panel.md

# Extension Options Panel Implementation Plan

> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

**Goal:** Add an options panel to this Firefox extension, reachable from `about:addons`, configuring two new entry points — a context-menu item on selected text and an `Alt+Shift+G` shortcut that acts on the selection.

**Architecture:** The extension is currently manifest-only with no JavaScript. This adds an MV2 ES-module background script (`background.type: "module"`, supported from Firefox 112) that registers a context menu and a keyboard command, three pure-logic modules under `lib/`, and an options page rendered inline in `about:addons`. All URL-building logic is pure and unit-tested with `node:test`; the browser-facing code is a thin wiring layer around it.

**Tech Stack:** Firefox WebExtension Manifest V2, vanilla ES modules (no bundler, no framework), `node:test` for unit tests, `web-ext` 10.5.0 for lint and packaging.

**Spec:** `docs/superpowers/specs/2026-07-29-extension-options-design.md` (committed at `3d5ce6a`). Read it before starting. **Appendix B is a rejection record, not a backlog** — do not implement auto-submit.

**Branch:** `feat/extension-options-panel`, already cut from `develop` @ `5edb288`.

## Global Constraints

Every task's requirements implicitly include this section. Values are copied verbatim from the spec.

- **Firefox Desktop only.** Do not add Chrome/Chromium packaging or touch any sibling repository.
- **Manifest stays V2.** Do not migrate to MV3. Keep the code MV3-portable: ES-module background, `persistent: false`, never `browser_style: true`.
- **Permissions are exactly `["storage", "menus", "activeTab"]`.** Do not add host permissions, `optional_permissions`, `tabs`, `webNavigation`, `notifications`, or `contentScripts`. All three chosen permissions add no install-prompt line; `tabs` and `notifications` do.
- **Never read `tab.url`, `tab.title`, or `tab.favIconUrl`.** Reading them requires the `tabs` permission. Only `tab.id` may be read.
- **`strict_min_version` is `"112.0"`.**
- **No new runtime or dev dependencies.** `node:test` is built in.
- **`lint.warningsAsErrors: true`** — a single addons-linter warning fails the build. `npx web-ext lint` must stay at 0 errors / 0 warnings / 0 notices.
- **Two-space indentation** in JSON, YAML, and JavaScript. Lowercase, hyphenated filenames.
- **Base URL is the root path `https://chatgpt.com/`.** Never `chatgpt.com/search`, which returns 404.
- **Send the `q` parameter only.** Never `prompt`, never both.
- **`MAX_URL_CHARS = 8000`.**
- **`hints` is hard-coded to the value `search`.** No mode dropdown.
- **Copy rule:** no user-facing text may say the query is *searched*, *sent*, or *asked* — only that ChatGPT opens **with the query filled in**. ChatGPT stopped auto-submitting URL-passed prompts; this is verified, not speculative.
- **Copy rule:** the words *private*, *incognito*, and *secure* must never appear near the temporary-chat setting.
- **No user-facing error notifications.** Every failure path degrades silently to something useful.
- **Commit format:** `<type>: <concise summary>`, lowercase type (`feat:`, `test:`, `doc:`, `build:`).

---

## File Structure

| File | Responsibility |
|---|---|
| `lib/defaults.js` | **Create.** `DEFAULT_SETTINGS` and `OPEN_IN_VALUES` — the single source of truth for shape and defaults. No imports. |
| `lib/settings.js` | **Create.** Pure `mergeSettings()` (validation + defaulting) plus `load()`/`save()` wrapping `browser.storage.sync`. Only the pure part is unit-tested. |
| `lib/build-url.js` | **Create.** Pure `buildChatGptUrl(settings, rawQuery)`. Zero browser APIs. The tested core. |
| `background/background.js` | **Create.** Registers the context menu and command; reads the selection; opens the tab/window. Thin wiring only — no URL logic. |
| `options/options.html` | **Create.** The five controls plus Restore defaults. |
| `options/options.css` | **Create.** Hand-styled, responsive to ~400 px, light and dark via `prefers-color-scheme`. |
| `options/options.js` | **Create.** Renders settings, debounced auto-save, live re-sync on `storage.onChanged`. |
| `test/build-url.test.js` | **Create.** Unit tests for the URL builder. |
| `test/settings.test.js` | **Create.** Unit tests for `mergeSettings`. |
| `manifest.json` | **Modify.** Add `permissions`, `background`, `options_ui`, `commands`, `strict_min_version`; bump version. |
| `package.json` | **Modify.** Add `"type": "module"`, a `test:unit` script; bump version. |
| `README.md` | **Modify.** Options section, the double-Enter limitation, revised privacy wording. |
| `AGENTS.md` | **Modify.** Project structure, commands, manual test checklist. |
| `CHANGELOG.md` | **Modify.** 1.1.0 entry. |

`web-ext-config.mjs` already excludes `docs/` and `test/` (done alongside the spec commit) — no change needed.

---

### Task 1: Tooling foundation, defaults, and settings validation

Establishes the test runner and the settings contract every later task depends on. `"type": "module"` is **required**: without it `node --test` relies on Node's module-syntax detection, which emits a permanent `MODULE_TYPELESS_PACKAGE_JSON` warning and **fails outright on Node 22.0–22.6**, and CI pins the bare major `"22"`.

**Files:**
- Modify: `package.json`
- Create: `lib/defaults.js`
- Create: `lib/settings.js`
- Test: `test/settings.test.js`

**Interfaces:**
- Consumes: nothing.
- Produces:
  - `DEFAULT_SETTINGS: { model: string, temporaryChat: boolean, webSearch: boolean, openIn: string, promptTemplate: string }` from `lib/defaults.js`
  - `OPEN_IN_VALUES: string[]` from `lib/defaults.js`
  - `mergeSettings(stored: unknown) => Settings` from `lib/settings.js`
  - `load() => Promise<Settings>` from `lib/settings.js`
  - `save(partial: Partial<Settings>) => Promise<void>` from `lib/settings.js`

- [ ] **Step 1: Add `"type": "module"` and the unit-test script to `package.json`**

Replace the `"private"`, `"version"`, and `"scripts"` region so the file reads:

```json
{
  "name": "search-with-chatgpt-powered-by-openai-extension",
  "version": "1.1.0",
  "private": true,
  "type": "module",
  "description": "Development tooling for the Search with ChatGPT Firefox extension.",
  "engines": {
    "node": ">=22"
  },
  "scripts": {
    "dev": "web-ext run",
    "lint": "web-ext lint",
    "test:unit": "node --test",
    "build": "web-ext build",
    "test": "npm run lint && npm run test:unit && npm run build"
  },
  "devDependencies": {
    "web-ext": "10.5.0"
  }
}
```

- [ ] **Step 2: Write the failing test**

Create `test/settings.test.js`:

```js
import test from "node:test";
import assert from "node:assert/strict";

import { DEFAULT_SETTINGS } from "../lib/defaults.js";
import { mergeSettings } from "../lib/settings.js";

test("empty object yields the defaults", () => {
  assert.deepEqual(mergeSettings({}), DEFAULT_SETTINGS);
});

test("null and undefined yield the defaults", () => {
  assert.deepEqual(mergeSettings(null), DEFAULT_SETTINGS);
  assert.deepEqual(mergeSettings(undefined), DEFAULT_SETTINGS);
});

test("a non-object yields the defaults", () => {
  assert.deepEqual(mergeSettings("nonsense"), DEFAULT_SETTINGS);
  assert.deepEqual(mergeSettings(42), DEFAULT_SETTINGS);
});

test("valid stored values are preserved", () => {
  assert.deepEqual(
    mergeSettings({
      model: "auto",
      temporaryChat: true,
      webSearch: true,
      openIn: "new-window",
      promptTemplate: "Explain: {query}",
    }),
    {
      model: "auto",
      temporaryChat: true,
      webSearch: true,
      openIn: "new-window",
      promptTemplate: "Explain: {query}",
    },
  );
});

test("missing keys fall back individually", () => {
  const merged = mergeSettings({ model: "auto" });
  assert.equal(merged.model, "auto");
  assert.equal(merged.temporaryChat, DEFAULT_SETTINGS.temporaryChat);
  assert.equal(merged.promptTemplate, DEFAULT_SETTINGS.promptTemplate);
});

test("unknown keys are dropped", () => {
  const merged = mergeSettings({ model: "auto", nope: "gone", openInn: "typo" });
  assert.deepEqual(Object.keys(merged).sort(), Object.keys(DEFAULT_SETTINGS).sort());
  assert.equal("nope" in merged, false);
});

test("wrong types fall back to the default", () => {
  const merged = mergeSettings({
    model: 123,
    temporaryChat: "yes",
    webSearch: 1,
    promptTemplate: [],
  });
  assert.equal(merged.model, DEFAULT_SETTINGS.model);
  assert.equal(merged.temporaryChat, DEFAULT_SETTINGS.temporaryChat);
  assert.equal(merged.webSearch, DEFAULT_SETTINGS.webSearch);
  assert.equal(merged.promptTemplate, DEFAULT_SETTINGS.promptTemplate);
});

test("an out-of-range openIn falls back to the default", () => {
  assert.equal(mergeSettings({ openIn: "teleport" }).openIn, DEFAULT_SETTINGS.openIn);
  assert.equal(mergeSettings({ openIn: "" }).openIn, DEFAULT_SETTINGS.openIn);
});

test("each documented openIn value is accepted", () => {
  for (const value of ["new-tab", "background-tab", "new-window"]) {
    assert.equal(mergeSettings({ openIn: value }).openIn, value);
  }
});

test("mergeSettings does not mutate DEFAULT_SETTINGS", () => {
  mergeSettings({ model: "mutated" });
  assert.equal(DEFAULT_SETTINGS.model, "");
});
```

- [ ] **Step 3: Run the test to verify it fails**

Run: `npm run test:unit`

Expected: FAIL — `Cannot find module .../lib/defaults.js`. Confirm the summary reports a non-zero `fail` count.

- [ ] **Step 4: Create `lib/defaults.js`**

```js
// Single source of truth for the settings shape and their defaults.
// Defaults reproduce the extension's pre-1.1 behaviour exactly: an empty model
// and both toggles off mean the only URL parameter sent is `q`.

export const OPEN_IN_VALUES = ["new-tab", "background-tab", "new-window"];

export const DEFAULT_SETTINGS = {
  model: "",
  temporaryChat: false,
  webSearch: false,
  openIn: "new-tab",
  promptTemplate: "{query}",
};
```

- [ ] **Step 5: Create `lib/settings.js`**

```js
import { DEFAULT_SETTINGS, OPEN_IN_VALUES } from "./defaults.js";

// Pure. Layers stored values over the defaults, dropping unknown keys and
// falling back on wrong types or out-of-range values. A fresh or signed-out
// profile returns {} from storage, which yields the defaults.
export function mergeSettings(stored) {
  const merged = { ...DEFAULT_SETTINGS };
  if (stored === null || typeof stored !== "object") {
    return merged;
  }
  if (typeof stored.model === "string") {
    merged.model = stored.model;
  }
  if (typeof stored.temporaryChat === "boolean") {
    merged.temporaryChat = stored.temporaryChat;
  }
  if (typeof stored.webSearch === "boolean") {
    merged.webSearch = stored.webSearch;
  }
  if (OPEN_IN_VALUES.includes(stored.openIn)) {
    merged.openIn = stored.openIn;
  }
  if (typeof stored.promptTemplate === "string") {
    merged.promptTemplate = stored.promptTemplate;
  }
  return merged;
}

// storage.sync works with no Mozilla account (it behaves as local storage and
// syncs later if the user signs in), so no capability probe is needed. Any
// rejection falls back to defaults rather than blocking the user's action.
// Firefox sanitises all non-quota backend errors to a single generic string, so
// there is nothing useful to branch on.
export async function load() {
  try {
    const stored = await browser.storage.sync.get(Object.keys(DEFAULT_SETTINGS));
    return mergeSettings(stored);
  } catch {
    return mergeSettings(null);
  }
}

export async function save(partial) {
  await browser.storage.sync.set(partial);
}
```

- [ ] **Step 6: Run the test to verify it passes**

Run: `npm run test:unit`

Expected: PASS, all 10 tests. Confirm the output shows `# fail 0` **and a non-zero `# tests` count** — `node --test` exits 0 when it discovers zero test files, so a zero count means the runner is misconfigured, not that everything passed.

- [ ] **Step 7: Confirm the full pipeline is green and no stderr warning appeared**

Run: `npm test 2>&1 | grep -i 'MODULE_TYPELESS\|warning' ; npm test`

Expected: no `MODULE_TYPELESS_PACKAGE_JSON` line; lint reports `0 errors / 0 warnings / 0 notices`; unit tests pass; build writes the ZIP; exit code 0.

- [ ] **Step 8: Verify `test/` is excluded from the package**

Run: `unzip -l web-ext-artifacts/search-with-chatgpt-firefox-1.0.zip | grep -c 'test\|docs' || echo "0 matches - correct"`

Expected: `0 matches - correct`. (The ZIP is still named `1.0` until Task 3 bumps the manifest version.) `lib/` legitimately appears once the background script imports it in Task 3.

- [ ] **Step 9: Commit**

```bash
git add package.json lib/defaults.js lib/settings.js test/settings.test.js
git commit -m "feat: add settings defaults and validation with unit tests"
```

---

### Task 2: The pure URL builder

The core logic, isolated so it is fully testable without a browser. Every ChatGPT parameter here is undocumented and unreliable — the builder's job is to emit them cleanly and never depend on them being honoured.

**Files:**
- Create: `lib/build-url.js`
- Test: `test/build-url.test.js`

**Interfaces:**
- Consumes: `DEFAULT_SETTINGS` from `lib/defaults.js` (tests only).
- Produces:
  - `buildChatGptUrl(settings: Settings, rawQuery: unknown) => string` from `lib/build-url.js`
  - `MAX_URL_CHARS: number` (8000) from `lib/build-url.js`

- [ ] **Step 1: Write the failing test**

Create `test/build-url.test.js`:

```js
import test from "node:test";
import assert from "node:assert/strict";

import { DEFAULT_SETTINGS } from "../lib/defaults.js";
import { buildChatGptUrl, MAX_URL_CHARS } from "../lib/build-url.js";

const withSettings = (overrides) => ({ ...DEFAULT_SETTINGS, ...overrides });
const queryOf = (url) => new URL(url).searchParams.get("q");
const paramsOf = (url) => [...new URL(url).searchParams.keys()];

test("defaults produce only the q parameter on the root path", () => {
  assert.equal(
    buildChatGptUrl(DEFAULT_SETTINGS, "hello"),
    "https://chatgpt.com/?q=hello",
  );
});

test("an empty or whitespace-only query omits q entirely", () => {
  for (const raw of ["", "   ", "\n\t", null, undefined]) {
    const url = buildChatGptUrl(DEFAULT_SETTINGS, raw);
    assert.equal(paramsOf(url).includes("q"), false, `raw=${JSON.stringify(raw)}`);
    assert.equal(url, "https://chatgpt.com/");
  }
});

test("model is sent only when non-empty after trimming", () => {
  assert.equal(queryOf(buildChatGptUrl(withSettings({ model: "auto" }), "hi")), "hi");
  assert.equal(new URL(buildChatGptUrl(withSettings({ model: "auto" }), "hi")).searchParams.get("model"), "auto");
  assert.equal(new URL(buildChatGptUrl(withSettings({ model: "  auto  " }), "hi")).searchParams.get("model"), "auto");
  for (const model of ["", "   "]) {
    assert.equal(paramsOf(buildChatGptUrl(withSettings({ model }), "hi")).includes("model"), false);
  }
});

test("temporaryChat and webSearch each appear only when enabled", () => {
  assert.equal(paramsOf(buildChatGptUrl(DEFAULT_SETTINGS, "hi")).includes("temporary-chat"), false);
  assert.equal(paramsOf(buildChatGptUrl(DEFAULT_SETTINGS, "hi")).includes("hints"), false);

  const temp = new URL(buildChatGptUrl(withSettings({ temporaryChat: true }), "hi"));
  assert.equal(temp.searchParams.get("temporary-chat"), "true");

  const search = new URL(buildChatGptUrl(withSettings({ webSearch: true }), "hi"));
  assert.equal(search.searchParams.get("hints"), "search");
});

test("all four URL-affecting settings combine, q first", () => {
  const url = buildChatGptUrl(
    withSettings({
      model: "auto",
      temporaryChat: true,
      webSearch: true,
      promptTemplate: "Explain: {query}",
    }),
    "entropy",
  );
  assert.deepEqual(paramsOf(url), ["q", "model", "temporary-chat", "hints"]);
  assert.equal(queryOf(url), "Explain: entropy");
});

test("openIn never influences the URL", () => {
  const base = buildChatGptUrl(DEFAULT_SETTINGS, "hi");
  for (const openIn of ["new-tab", "background-tab", "new-window"]) {
    assert.equal(buildChatGptUrl(withSettings({ openIn }), "hi"), base);
  }
});

test("special characters survive encoding round-trip", () => {
  const raw = 'a & b # c ? d = e + f "g" <h> 100% 😀 日本語\nnewline';
  const url = buildChatGptUrl(DEFAULT_SETTINGS, raw);
  assert.equal(queryOf(url), raw);
  assert.equal(url.includes(" "), false);
  assert.equal(url.includes("#"), false);
});

test("the template replaces every {query} occurrence", () => {
  const url = buildChatGptUrl(withSettings({ promptTemplate: "{query} / {query}" }), "x");
  assert.equal(queryOf(url), "x / x");
});

test("a template without {query} is treated as a prefix, never dropping the query", () => {
  const url = buildChatGptUrl(withSettings({ promptTemplate: "Be concise:" }), "why");
  assert.equal(queryOf(url), "Be concise: why");
});

test("an empty or whitespace-only template yields the bare query", () => {
  for (const promptTemplate of ["", "   "]) {
    assert.equal(queryOf(buildChatGptUrl(withSettings({ promptTemplate }), "why")), "why");
  }
});

test("a non-string template degrades to the bare query", () => {
  assert.equal(queryOf(buildChatGptUrl(withSettings({ promptTemplate: null }), "why")), "why");
});

test("an over-long prompt is truncated to fit the URL budget", () => {
  const url = buildChatGptUrl(DEFAULT_SETTINGS, "x".repeat(20000));
  assert.ok(url.length <= MAX_URL_CHARS, `length was ${url.length}`);
  assert.ok(queryOf(url).length > 0);
  assert.ok(queryOf(url).length < 20000);
});

test("truncation accounts for the other parameters", () => {
  const settings = withSettings({ model: "some-long-model-slug", temporaryChat: true, webSearch: true });
  const url = buildChatGptUrl(settings, "x".repeat(20000));
  assert.ok(url.length <= MAX_URL_CHARS, `length was ${url.length}`);
  assert.equal(new URL(url).searchParams.get("model"), "some-long-model-slug");
  assert.equal(new URL(url).searchParams.get("hints"), "search");
});

test("truncation never splits a surrogate pair", () => {
  const url = buildChatGptUrl(DEFAULT_SETTINGS, "😀".repeat(9000));
  assert.ok(url.length <= MAX_URL_CHARS);
  const lonelySurrogate = /[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?<![\uD800-\uDBFF])[\uDC00-\uDFFF]/;
  assert.equal(lonelySurrogate.test(queryOf(url)), false);
});

test("truncation never leaves a severed percent-escape", () => {
  const url = buildChatGptUrl(DEFAULT_SETTINGS, "😀 ".repeat(9000));
  assert.equal(/%[0-9A-Fa-f]?$/.test(url), false);
  assert.doesNotThrow(() => decodeURIComponent(new URL(url).search.slice(3)));
});

test("truncation prefers a whitespace boundary, so no word is cut in half", () => {
  const url = buildChatGptUrl(DEFAULT_SETTINGS, "lorem ipsum ".repeat(2000));
  const tokens = queryOf(url).trim().split(/\s+/);
  assert.ok(tokens.length > 1);
  for (const token of tokens) {
    assert.ok(token === "lorem" || token === "ipsum", `truncated mid-word: ${token}`);
  }
});

test("a query needing no truncation is left byte-identical", () => {
  const raw = "a modest question about thermodynamics";
  assert.equal(queryOf(buildChatGptUrl(DEFAULT_SETTINGS, raw)), raw);
});
```

- [ ] **Step 2: Run the test to verify it fails**

Run: `node --test test/build-url.test.js`

Expected: FAIL — `Cannot find module .../lib/build-url.js`.

- [ ] **Step 3: Create `lib/build-url.js`**

```js
// Pure URL construction. No browser APIs, so node:test imports this directly.
//
// Every ChatGPT parameter below is undocumented by OpenAI and has broken before.
// This module's contract is only that it emits a well-formed URL; whether
// ChatGPT honours model / temporary-chat / hints is out of our control, which is
// why each is independently omittable and every label is hint-strength.
//
// The root path is mandatory: chatgpt.com/search began returning 404 in
// mid-2025, and the root form is what OpenAI's own extension uses.

const BASE = "https://chatgpt.com/";

export const MAX_URL_CHARS = 8000;

// Fraction of the kept text within which a whitespace cut is preferred.
const WHITESPACE_WINDOW = 0.9;

function applyTemplate(template, query) {
  if (query === "") {
    return "";
  }
  const tpl = typeof template === "string" ? template : "";
  if (tpl.includes("{query}")) {
    return tpl.replaceAll("{query}", query);
  }
  const trimmed = tpl.trim();
  return trimmed === "" ? query : `${trimmed} ${query}`;
}

function addOptionalParams(url, settings) {
  const model = typeof settings.model === "string" ? settings.model.trim() : "";
  if (model !== "") {
    url.searchParams.set("model", model);
  }
  if (settings.temporaryChat) {
    url.searchParams.set("temporary-chat", "true");
  }
  if (settings.webSearch) {
    url.searchParams.set("hints", "search");
  }
  return url;
}

function lastWhitespaceIndex(text) {
  for (let i = text.length - 1; i >= 0; i -= 1) {
    if (/\s/.test(text[i])) {
      return i;
    }
  }
  return -1;
}

// Returns the longest prefix of `prompt` whose finished URL fits the budget.
// Slicing happens by CODE POINT on the decoded string, so a surrogate pair can
// never be split and a percent-escape can never be severed (encoding happens
// afterwards, via URLSearchParams).
function fitToBudget(prompt, settings) {
  const codePoints = Array.from(prompt);

  const urlLengthFor = (count) => {
    const url = new URL(BASE);
    url.searchParams.set("q", codePoints.slice(0, count).join(""));
    addOptionalParams(url, settings);
    return url.href.length;
  };

  if (urlLengthFor(codePoints.length) <= MAX_URL_CHARS) {
    return prompt;
  }

  let low = 0;
  let high = codePoints.length;
  while (low < high) {
    const mid = Math.floor((low + high + 1) / 2);
    if (urlLengthFor(mid) <= MAX_URL_CHARS) {
      low = mid;
    } else {
      high = mid - 1;
    }
  }

  const kept = codePoints.slice(0, low).join("");
  const boundary = Math.floor(kept.length * WHITESPACE_WINDOW);
  const cut = lastWhitespaceIndex(kept);
  return cut >= boundary && cut > 0 ? kept.slice(0, cut) : kept;
}

export function buildChatGptUrl(settings, rawQuery) {
  const query = String(rawQuery ?? "").trim();
  const prompt = fitToBudget(applyTemplate(settings.promptTemplate, query), settings);

  // q first, matching the most-cited working examples. Total serialized length
  // is order-independent, so measuring without q above is sound.
  const url = new URL(BASE);
  if (prompt !== "") {
    url.searchParams.set("q", prompt);
  }
  addOptionalParams(url, settings);
  return url.href;
}
```

- [ ] **Step 4: Run the test to verify it passes**

Run: `node --test test/build-url.test.js`

Expected: PASS, all 17 tests, `# fail 0`.

- [ ] **Step 5: Run the full suite**

Run: `npm test`

Expected: lint `0 errors / 0 warnings / 0 notices`; 27 unit tests passing across both files; build succeeds; exit 0.

- [ ] **Step 6: Commit**

```bash
git add lib/build-url.js test/build-url.test.js
git commit -m "feat: add pure ChatGPT URL builder with unit tests"
```

---

### Task 3: Manifest wiring and the background script

Turns the tested logic into a working extension. Manifest and background must land together — the manifest without the script registers nothing, and the script without the manifest is never loaded.

**Files:**
- Modify: `manifest.json`
- Create: `background/background.js`

**Interfaces:**
- Consumes: `load()` from `lib/settings.js`; `buildChatGptUrl()` from `lib/build-url.js`.
- Produces: the `ask-chatgpt` command name (referenced by `manifest.json` and by the `commands.onCommand` handler) and the `ask-chatgpt-selection` menu id.

- [ ] **Step 1: Rewrite `manifest.json`**

Replace the whole file. `browser_style: false` is set **explicitly** — omitting it defaults to `true` in MV2, and `true` is unsupported in MV3, so being explicit keeps the panel looking identical if the extension ever migrates. `is_default` stays `false`: setting it `true` triggers a second, separate consent doorhanger.

```json
{
  "name": "Search with ChatGPT powered by OpenAI!",
  "description": "Adds a ChatGPT search engine",
  "manifest_version": 2,
  "author": "Mathew Guest <mat@zavage.net>",
  "homepage_url": "https://zavage-software.com/portfolio/search-with-ChatGPT",
  "version": "1.1",
  "icons": {
    "16": "icons/powered-by-openai-icon-16x16.png",
    "32": "icons/powered-by-openai-icon-32x32.png",
    "48": "icons/powered-by-openai-icon-48x48.png",
    "64": "icons/powered-by-openai-icon-64x64.png",
    "128": "icons/powered-by-openai-icon-128x128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{24644f0c-bfcb-4ebd-a16b-bc8a7d154288}",
      "strict_min_version": "112.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "menus",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "type": "module",
    "persistent": false
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": false,
    "browser_style": false
  },
  "commands": {
    "ask-chatgpt": {
      "suggested_key": {
        "default": "Alt+Shift+G"
      },
      "description": "Ask ChatGPT about the selected text"
    }
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "ChatGPT",
      "search_url": "https://chatgpt.com?q={searchTerms}",
      "keyword": "gpt",
      "favicon_url": "https://zavage-software.com/static/ChatGPT-favicon.png",
      "is_default": false,
      "encoding": "UTF-8"
    }
  }
}
```

**Do not change `search_provider`.** Leaving Firefox as the transmitter of `gpt <query>` is a deliberate decision to minimise AMO data-collection exposure (spec Risk 6).

- [ ] **Step 2: Create `background/background.js`**

```js
import { load } from "../lib/settings.js";
import { buildChatGptUrl } from "../lib/build-url.js";

const MENU_ID = "ask-chatgpt-selection";
const COMMAND_ID = "ask-chatgpt";

// Reads the user's selection for the keyboard-shortcut path. The context menu
// does not need this — it receives info.selectionText directly.
//
// A commands invocation confers activeTab (ext-commands.js grants it before
// firing onCommand), so executeScript works with no host permission.
//
// Failure has three measured shapes, all handled here: a thrown
// "Missing host permission for the tab", a thrown variant naming frames, and a
// SILENT resolution to [null] on parent-process about: pages. Never index into
// a result without a null check.
async function readSelection() {
  let tabs;
  try {
    tabs = await browser.tabs.query({ active: true, currentWindow: true });
  } catch {
    return "";
  }

  // Only tab.id may be read. Reading tab.url or tab.title would require the
  // "tabs" permission, which does add an install-prompt warning line.
  const tabId = tabs?.[0]?.id;
  if (typeof tabId !== "number") {
    return "";
  }

  let results;
  try {
    results = await browser.tabs.executeScript(tabId, {
      code: "window.getSelection().toString()",
      allFrames: true,
      matchAboutBlank: true,
    });
  } catch {
    return "";
  }

  if (!Array.isArray(results)) {
    return "";
  }
  for (const result of results) {
    if (typeof result === "string" && result.trim() !== "") {
      return result;
    }
  }
  return "";
}

async function openChatGpt(query) {
  const settings = await load();
  const url = buildChatGptUrl(settings, query);

  if (settings.openIn === "new-window") {
    try {
      await browser.windows.create({ url });
      return;
    } catch {
      // Fall through to a tab rather than doing nothing.
    }
  }

  await browser.tabs.create({ url, active: settings.openIn !== "background-tab" });
}

// removeAll() first, so a background event page waking up and re-running this
// module cannot throw on a duplicate menu id.
async function registerMenu() {
  await browser.menus.removeAll();
  browser.menus.create({
    id: MENU_ID,
    title: 'Ask ChatGPT about "%s"',
    contexts: ["selection"],
  });
}

browser.menus.onClicked.addListener((info) => {
  if (info.menuItemId !== MENU_ID) {
    return;
  }
  openChatGpt(info.selectionText ?? "");
});

// browser.commands does not exist on Firefox for Android. This extension is
// desktop-only, but guard rather than throwing at startup.
if (browser.commands) {
  browser.commands.onCommand.addListener(async (command) => {
    if (command !== COMMAND_ID) {
      return;
    }
    openChatGpt(await readSelection());
  });
}

registerMenu();
```

- [ ] **Step 3: Verify lint and packaging still pass**

Run: `npm test`

Expected: `0 errors / 0 warnings / 0 notices`; 27 tests pass; the ZIP is now named `search-with-chatgpt-firefox-1.1.zip`.

- [ ] **Step 4: Verify the package contents**

Run: `unzip -l web-ext-artifacts/search-with-chatgpt-firefox-1.1.zip`

Expected: `manifest.json`, `LICENSE.txt`, `icons/` + 5 PNGs, `background/background.js`, `lib/` + 3 modules. **No `test/`, no `docs/`, no `options/` yet** (Task 4 adds it), and no empty `test/`/`docs/` directory entries.

- [ ] **Step 5: Manual smoke test in Firefox**

Run: `npm run dev`

In the temporary profile:
1. Select text on any ordinary web page, right-click → confirm an **"Ask ChatGPT about …"** item appears, showing the selected text.
2. Click it → ChatGPT opens in a new tab with the selection in the composer.
3. Right-click with **nothing** selected → confirm the item is **absent**.
4. Press `Alt+Shift+G` with text selected → same behaviour as the menu.
5. Press `Alt+Shift+G` with nothing selected → a blank ChatGPT opens (no `?q=`).
6. Navigate to `about:config`, press `Alt+Shift+G` → a blank ChatGPT opens. It must **not** fail silently with nothing happening, and must not log an unhandled rejection.
7. Select text inside an iframe (any page with an embedded frame) and press `Alt+Shift+G` → the iframe selection is used.
8. Confirm `gpt <query>` in the address bar still works and the provider is still non-default in `about:preferences#search`.

**The shortcut must be verified by actually pressing the key.** `commands.getAll()` reports a `suggested_key` as registered even when Firefox has silently overridden it — `Ctrl+Shift+Y` was measured showing as registered and never firing. A green `getAll()` proves nothing.

If `Alt+Shift+G` does not fire, check `about:addons` → gear → Manage Extension Shortcuts for a conflict before changing code.

- [ ] **Step 6: Commit**

```bash
git add manifest.json background/background.js
git commit -m "feat: add context menu and keyboard shortcut entry points"
```

---

### Task 4: The options panel

The panel renders **inline inside `about:addons`**, which is a narrow, constrained surface that inherits that page's layout and follows the system theme. Because `browser_style` is off, it is hand-styled and must handle dark mode itself.

**Files:**
- Create: `options/options.html`
- Create: `options/options.css`
- Create: `options/options.js`

**Interfaces:**
- Consumes: `DEFAULT_SETTINGS` from `lib/defaults.js`; `load()` and `save()` from `lib/settings.js`.
- Produces: nothing consumed by later tasks.

- [ ] **Step 1: Create `options/options.html`**

The element `id`s must match the keys in `DEFAULT_SETTINGS` exactly — `options.js` relies on that.

```html
<!-- Rendered inline inside about:addons. Keep it narrow-friendly and do not
     rely on window sizing; a pref can degrade this to a standalone tab. -->
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Search with ChatGPT — Options</title>
<link rel="stylesheet" href="options.css" />

<form id="settings" autocomplete="off">
  <div class="field">
    <label for="model">Model <span class="tag">experimental</span></label>
    <input type="text" id="model" placeholder="auto" spellcheck="false" />
    <p class="hint">
      ChatGPT may ignore this and use your account default. Leave blank to
      always use your account default.
    </p>
  </div>

  <div class="field checkbox">
    <label><input type="checkbox" id="temporaryChat" /> Request a temporary chat</label>
    <p class="hint">
      ChatGPT may not honour this. Check ChatGPT's own indicator before sending
      anything sensitive.
    </p>
  </div>

  <div class="field checkbox">
    <label><input type="checkbox" id="webSearch" /> Ask ChatGPT to use web search (hint only)</label>
    <p class="hint">A hint to ChatGPT's interface, not a guarantee.</p>
  </div>

  <div class="field">
    <label for="openIn">Open in</label>
    <select id="openIn">
      <option value="new-tab">A new tab</option>
      <option value="background-tab">A new background tab</option>
      <option value="new-window">A new window</option>
    </select>
  </div>

  <div class="field">
    <label for="promptTemplate">Prompt template</label>
    <input type="text" id="promptTemplate" spellcheck="false" />
    <p class="hint"><code>{query}</code> is replaced with your selected text.</p>
  </div>

  <div class="actions">
    <button type="button" id="restore">Restore defaults</button>
    <span id="status" role="status" aria-live="polite"></span>
  </div>
</form>

<p class="note">
  Selecting text and choosing <strong>Ask ChatGPT</strong> — or pressing
  <kbd>Alt</kbd>+<kbd>Shift</kbd>+<kbd>G</kbd> — opens ChatGPT with your text
  filled in. ChatGPT no longer submits prompts that arrive from a link, so press
  Enter there to send. Change the shortcut under
  <em>Manage Extension Shortcuts</em> in Add-ons.
</p>

<script type="module" src="options.js"></script>
```

- [ ] **Step 2: Create `options/options.css`**

```css
:root {
  --fg: #15141a;
  --fg-dim: #5b5b66;
  --bg: transparent;
  --border: #8f8f9d;
  --field-bg: #ffffff;
  --accent: #0060df;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #fbfbfe;
    --fg-dim: #b1b1bd;
    --border: #8f8f9d;
    --field-bg: #2b2a33;
    --accent: #0df;
  }
}

body {
  margin: 0;
  padding: 0.5rem 0;
  color: var(--fg);
  background: var(--bg);
  font: message-box;
  font-size: 1rem;
  line-height: 1.4;
  max-width: 42rem;
}

.field {
  margin-bottom: 1.15rem;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.checkbox label {
  font-weight: 400;
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
}

input[type="text"],
select {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 0.4rem 0.5rem;
  color: var(--fg);
  background: var(--field-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  font: inherit;
}

input[type="text"]:focus-visible,
select:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.hint {
  margin: 0.3rem 0 0;
  color: var(--fg-dim);
  font-size: 0.85rem;
}

.tag {
  font-weight: 400;
  font-size: 0.75rem;
  color: var(--fg-dim);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0 0.3rem;
  vertical-align: 1px;
}

.actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

button {
  padding: 0.35rem 0.8rem;
  color: var(--fg);
  background: var(--field-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  font: inherit;
  cursor: pointer;
}

#status {
  color: var(--fg-dim);
  font-size: 0.85rem;
}

.note {
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--fg-dim);
  font-size: 0.85rem;
}

code,
kbd {
  font-family: monospace;
  font-size: 0.9em;
}

/* The inline about:addons surface can be very narrow. */
@media (max-width: 26rem) {
  .actions {
    align-items: flex-start;
    flex-direction: column;
  }
}
```

- [ ] **Step 3: Create `options/options.js`**

```js
import { DEFAULT_SETTINGS } from "../lib/defaults.js";
import { load, save } from "../lib/settings.js";

const SAVE_DEBOUNCE_MS = 400;
const STATUS_CLEAR_MS = 1500;

const field = (id) => document.getElementById(id);

let saveTimer = null;
let statusTimer = null;
// Suppresses the change/input handlers while we are programmatically writing
// values into the form, so a remote sync cannot trigger a save loop.
let applying = false;

function render(settings) {
  applying = true;
  field("model").value = settings.model;
  field("temporaryChat").checked = settings.temporaryChat;
  field("webSearch").checked = settings.webSearch;
  field("openIn").value = settings.openIn;
  field("promptTemplate").value = settings.promptTemplate;
  applying = false;
}

function collect() {
  return {
    model: field("model").value,
    temporaryChat: field("temporaryChat").checked,
    webSearch: field("webSearch").checked,
    openIn: field("openIn").value,
    promptTemplate: field("promptTemplate").value,
  };
}

function showStatus(message) {
  field("status").textContent = message;
  clearTimeout(statusTimer);
  statusTimer = setTimeout(() => {
    field("status").textContent = "";
  }, STATUS_CLEAR_MS);
}

async function persist(settings) {
  try {
    await save(settings);
    showStatus("Saved");
  } catch {
    // storage.sync sanitises its errors, so there is nothing specific to report.
    showStatus("Could not save settings");
  }
}

// Debounced so typing in a text field cannot approach any write-rate quota.
function scheduleSave() {
  if (applying) {
    return;
  }
  clearTimeout(saveTimer);
  saveTimer = setTimeout(() => persist(collect()), SAVE_DEBOUNCE_MS);
}

// Module scripts are deferred, so the DOM is already parsed here.
render(await load());

for (const id of Object.keys(DEFAULT_SETTINGS)) {
  field(id).addEventListener("input", scheduleSave);
  field(id).addEventListener("change", scheduleSave);
}

field("restore").addEventListener("click", () => {
  clearTimeout(saveTimer);
  render(DEFAULT_SETTINGS);
  persist({ ...DEFAULT_SETTINGS });
});

// A remote sync landing while the panel is open must update the controls rather
// than being clobbered by stale field values on the next edit.
browser.storage.onChanged.addListener(async (changes, area) => {
  if (area !== "sync") {
    return;
  }
  render(await load());
});
```

- [ ] **Step 4: Verify lint and packaging**

Run: `npm test`

Expected: `0 errors / 0 warnings / 0 notices`; 27 tests pass; build succeeds. A top-level `await` in `options.js` is valid in an ES module; if addons-linter objects, wrap the body in an `async function init() { … } init();` instead.

- [ ] **Step 5: Confirm `options/` is packaged**

Run: `unzip -l web-ext-artifacts/search-with-chatgpt-firefox-1.1.zip | grep options`

Expected: `options/options.html`, `options/options.css`, `options/options.js`.

- [ ] **Step 6: Manual test the panel**

Run: `npm run dev`

1. Open `about:addons` → Extensions → this extension → the **Options** tab (Windows) / **Preferences** tab (macOS, Linux). Firefox's label is platform-dependent; do not expect "Preferences" everywhere.
2. Confirm all five controls plus **Restore defaults** render and are readable.
3. Change each setting; confirm "Saved" appears briefly.
4. Restart Firefox (or reload the extension) and confirm every value persisted.
5. Click **Restore defaults**; confirm the fields reset and persist.
6. Narrow the Firefox window as far as it goes; confirm nothing overflows horizontally and the actions row wraps.
7. Toggle the OS/Firefox theme to dark (`about:preferences` → Language and Appearance, or set `ui.systemUsesDarkTheme`); confirm text stays legible and inputs remain visible in **both** themes.
8. Set **Prompt template** to `Explain simply: {query}`, then use the context menu; confirm the ChatGPT composer contains `Explain simply: <selection>`.
9. Set **Open in** to each of the three values and confirm each behaves correctly, including that the background-tab option does not steal focus.

- [ ] **Step 7: Commit**

```bash
git add options/options.html options/options.css options/options.js
git commit -m "feat: add options panel embedded in about:addons"
```

---

### Task 5: Documentation, changelog, and release metadata

**Files:**
- Modify: `README.md`
- Modify: `AGENTS.md`
- Modify: `CHANGELOG.md`

**Interfaces:**
- Consumes: nothing.
- Produces: nothing.

- [ ] **Step 1: Add an Options section and the ChatGPT limitation to `README.md`**

Insert after the existing intro paragraphs, before `## Browser Support`:

```markdown
## Options

Open `about:addons`, select this extension, and choose the **Options** tab
(**Preferences** on macOS and Linux). Available settings:

- **Model** *(experimental)* — a model slug such as `auto`. ChatGPT may ignore
  it and use your account default; leave blank to always use the account
  default.
- **Request a temporary chat** — asks ChatGPT not to save the conversation.
  ChatGPT may not honour this; check its own indicator before relying on it.
- **Ask ChatGPT to use web search** — a hint to ChatGPT's interface, not a
  guarantee.
- **Open in** — a new tab, a new background tab, or a new window.
- **Prompt template** — wraps your text, for example `Explain simply: {query}`.

These settings apply to the new entry points: selecting text and choosing
**Ask ChatGPT** from the right-click menu, or pressing
<kbd>Alt</kbd>+<kbd>Shift</kbd>+<kbd>G</kbd>. Rebind the shortcut under
**Manage Extension Shortcuts** in the Add-ons gear menu.

The `gpt <query>` address-bar search is unchanged and does not read these
settings.

## Why you press Enter twice

ChatGPT no longer submits prompts that are passed to it in a URL — it fills them
into the composer and waits. So `gpt <query>` opens ChatGPT with your query
filled in, and you press Enter there to send it.

This is a change OpenAI made to chatgpt.com, not a fault in this extension, and
it is outside our control. It was a deliberate security measure: automatically
running a prompt that arrived in a link let malicious links execute instructions
in a signed-in ChatGPT session. The extra keypress is the checkpoint that
prevents that. No API key, server, or intermediary is involved either way.
```

- [ ] **Step 2: Revise the `README.md` privacy section**

Replace the existing `## Privacy Policy` section:

```markdown
## Privacy Policy

This extension has no server, no API key, and no intermediary. Nothing is
reported to Zavage Software.

- Your settings are stored in your own browser profile. If you use Firefox Sync
  with **Add-ons** enabled, they sync end-to-end encrypted through your own
  Mozilla account.
- When you choose **Ask ChatGPT** or press the shortcut, the text you selected
  is placed in the chatgpt.com URL the extension opens for you. It goes nowhere
  else.
- The extension reads a page's selected text only at the moment you invoke it,
  and never reads page addresses or titles.
```

Do **not** write "never leaves your device" unconditionally — with Sync enabled an encrypted blob does reach Mozilla's servers. Do not restore the bare claim "This extension collects zero user data": it is true in plain English, but AMO's definition of transmission is broader, and specific wording is safer. See spec Risk 6.

- [ ] **Step 3: Update `AGENTS.md`**

In **Project Structure & Module Organization**, replace the opening line and add entries:

```markdown
This is a Firefox WebExtension (Manifest V2) with npm-based development tooling.

- `manifest.json` defines the extension metadata, the ChatGPT search provider,
  the background script, the options panel, and the keyboard command.
- `lib/` holds pure logic with no browser dependencies: `defaults.js`,
  `build-url.js`, and `settings.js`. This is the unit-tested core.
- `background/background.js` is an ES-module background script that registers
  the context menu and the keyboard command.
- `options/` is the options panel rendered inline in `about:addons`.
- `test/` holds `node:test` unit tests. Excluded from the packaged ZIP.
- `icons/` contains size-specific PNG artwork named `powered-by-openai-icon-<size>x<size>.png`.
- `web-ext-config.mjs` controls linting, local execution, and ZIP packaging.
- `docs/superpowers/` holds specs and plans. Excluded from the packaged ZIP.
- `.gitea/workflows/firefox-extension.yml` validates pull requests and protected branches.
- `README.md`, `CHANGELOG.md`, and `LICENSE.txt` cover usage, releases, and licensing.
```

In **Build, Test, and Development Commands**, add after the `npm run lint` line:

```markdown
- `npm run test:unit` runs the `node:test` unit tests over `test/`.
```

and replace the `npm test` line:

```markdown
- `npm test` runs lint, unit tests, and build together; run it before every pull request.
```

Replace the first paragraph of **Testing Guidelines**:

```markdown
Unit tests cover the pure logic in `lib/` via `node:test`; automated checks
otherwise cover manifest validation and packaging, not browser behaviour. Note
`node --test` exits 0 when it discovers no test files, so confirm a non-zero
test count rather than trusting the exit code alone.

After `npm test`, use `npm run dev` and confirm:

- `gpt <query>` opens ChatGPT, the provider stays non-default, and Firefox
  search settings can configure it.
- The Options/Preferences tab renders all five settings plus Restore defaults,
  in both light and dark themes and at a narrow window width, and values
  persist across a restart.
- The right-click **Ask ChatGPT** item appears only when text is selected.
- `Alt+Shift+G` acts on the selection, including a selection inside an iframe,
  and opens a blank chat when nothing is selected or on a restricted page such
  as `about:config`. Press the key to test this — `commands.getAll()` reports a
  shortcut as registered even when Firefox has silently overridden it.

Inspect ZIP contents whenever packaging rules or assets change; `test/` and
`docs/` must never appear, not even as empty directory entries.
```

Add a new subsection at the end of **Security & Privacy**:

```markdown
Permissions are deliberately limited to `storage`, `menus`, and `activeTab`,
which add no line to Firefox's install prompt. Do not add `tabs`,
`notifications`, `webNavigation`, or any host permission without re-reading
`docs/superpowers/specs/2026-07-29-extension-options-design.md` — each was
considered and rejected there, and Appendix B records a feature rejected on
security grounds that must not be revived without clearing the bar documented
with it.
```

- [ ] **Step 4: Add the `CHANGELOG.md` entry**

Insert directly below the `# Changelog` intro paragraph, above the `## [1.0.0]` heading:

```markdown
## [1.1.0] (2026-07-30)

Adds an options panel and two new ways to reach ChatGPT.

 * Options panel in `about:addons` with five settings: model (experimental),
   temporary chat, web-search hint, where results open, and a prompt template.
 * Right-click selected text and choose "Ask ChatGPT" to open ChatGPT with that
   text filled in.
 * Keyboard shortcut `Alt+Shift+G` does the same for the current selection, and
   opens an empty chat when nothing is selected. Rebindable via Manage Extension
   Shortcuts.
 * Documented that ChatGPT no longer submits prompts passed in a URL, so a
   second Enter is needed. This is an upstream change to chatgpt.com.
 * `gpt <query>` address-bar search is unchanged.
 * Permissions added: storage, menus, activeTab. None of them adds a line to
   Firefox's install prompt.
```

- [ ] **Step 5: Verify the whole suite one last time**

Run: `npm test && unzip -l web-ext-artifacts/search-with-chatgpt-firefox-1.1.zip`

Expected: `0 errors / 0 warnings / 0 notices`; 27 tests pass; the ZIP contains exactly `manifest.json`, `LICENSE.txt`, `icons/` + 5 PNGs, `background/background.js`, `lib/` + 3 modules, `options/` + 3 files — and nothing else.

- [ ] **Step 6: Commit**

```bash
git add README.md AGENTS.md CHANGELOG.md
git commit -m "doc: document options panel, entry points, and the ChatGPT prefill limitation"
```

---

## Before opening the pull request

- [ ] Re-read spec Risk 6. The PR description must flag the **open AMO
      data-collection question** — whether `required: ["none"]` survives
      extension code reading page text — and note it should be asked before
      submission, not at submission.
- [ ] The PR description must list the manual Firefox checks actually performed,
      call out the new permissions explicitly, and state that
      `chrome_settings_overrides` is unchanged.
- [ ] Push the branch (`git push -u origin feat/extension-options-panel`) and
      open the PR with `tea pr create`. Do not merge; hand the URL over for human
      review.

## Out of scope — do not implement

Each was considered and rejected in the spec. Implementing any of them silently
would undo a deliberate decision:

- Auto-submitting the prompt (spec Appendix B — rejected on security grounds).
- `browser.omnibox` (works, but increases AMO data-collection exposure).
- Any host permission, `optional_permissions`, or `webNavigation`.
- A toolbar button; multiple named prompt templates; MV3 migration; Chrome
  packaging; user-facing error notifications.