feat(update): add update settings and a background check

[My-Denia]

Summary

The tray already had a manual "Check for Updates"; this adds the update-handling options the issue asks for, plus a periodic background check.

• Update Settings appears in the tray menu with three radio modes, persisted per user and defaulting to the least intrusive:
  • Notify when an update is available — a background-found update shows a dialog with the current and latest version and a Download button;
  • Download updates automatically — the update is downloaded in the background and a dialog tells you it is ready;
  • Download and install updates automatically — after the download you get a restart prompt; installation always goes through an explicit "restart now" choice. No mode installs behind your back: closing the HUD quits this app, so an install-on-quit would effectively run a large installer whenever the user merely closed the HUD.
• Background check runs on a 24-hour interval. It is silent when you are up to date — no "you're current" popups — and defers while a recording is active. The first background check fires after the app has been up for 24 hours; there is deliberately no extra check at startup.
• Both the settings menu and the timer exist only where self-updating is actually possible: packaged builds on channels that own their updates. Store/Flatpak/Snap/Nix-managed installs and dev runs see no settings entry, start no timer, and never load the updater module at startup.
• A corrupt or hand-edited settings file falls back to the notify default instead of throwing, and unknown mode values are rejected.
• A failed background download reports the underlying error message in its dialog rather than failing silently, matching what the manual check already does.

Related issue

Fixes #301

Covered from the issue: manual check (pre-existing), version comparison, the notify dialog showing installed vs available version, and the three-mode Update Settings with the proposed semantics. Two smaller behaviors from the issue's list are not in this change and I'm happy to follow up: after choosing "download automatically" there is no separate "install now" affordance later in the session (the restart offer comes from the install mode or from a manual check), and there is no immediate check right at startup (the first automatic check comes after 24 hours of uptime; manual check covers the gap).

Type of change

• Feature

Release impact

• Minor

Desktop impact

• Windows
• macOS
• Linux

Screenshots / video

Text description in place of screenshots: the tray menu gains an "Update Settings" submenu with the three modes as radio items; selecting a mode persists across restarts. In notify mode a found update shows the current-vs-latest dialog; in download mode a "has been downloaded" dialog; in download-and-install mode a restart prompt.

Testing

• npx vitest run electron/background-update.test.ts electron/update-settings.test.ts at this branch's head: 2 files, 9 passed — no timer on non-owning channels, no current-version dialog on the background path, the per-mode plans, no quitAndInstall before an explicit Restart Now, the download error handed through to the dialog, settings round-trip, notify default, corrupt-file fallback, and garbage-mode rejection.
• npx tsc --noEmit and npx tsc -p tsconfig.test.json --noEmit at this branch's head: clean.

Manual verification on Windows 11, on an earlier revision of this series, with a packaged build whose version was set below a published release: all three modes exercised against a real download — notify dialog, background download-complete dialog, and the restart prompt followed by an actual install; settings persisted across app restarts; an interrupted download resumed and completed on the next check. The startup-path claim is bound to this branch exactly: a live run at a head whose electron/main.ts is byte-identical to this branch booted clean with no updater import on a non-self-updating channel.

Summary by CodeRabbit

• New Features
  • Added automatic background update checks.
  • Added tray settings for notification, download-only, or download-and-install behavior.
  • Update preferences are saved and restored between app launches.
  • Added clearer statuses for downloaded updates and installation outcomes.
• Bug Fixes
  • Prevented unavailable or current updates from triggering installation or restart prompts.
• Localization
  • Added translations for update settings, modes, and downloaded-update status across supported languages.
• Tests
  • Expanded coverage for scheduling, preferences, downloads, installation, prompts, and error handling.

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• electron/background-update.test.ts
• electron/background-update.ts

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📝 Walkthrough

Walkthrough

Changes

Background update flow

Layer / File(s)	Summary
Background update policy electron/background-update.ts, electron/background-update.test.ts	Adds update modes, timer eligibility, update planning, restart confirmation, and typed download/install results. Tests cover policy decisions and unavailable outcomes.
Persisted update mode electron/update-settings.ts, electron/update-settings.test.ts	Persists update modes in update-settings.json. Invalid or unavailable settings default to notify.
Tray and startup integration electron/main.ts	Adds periodic update checks, update-mode tray controls, startup loading, and download/install workflow integration.
Localized update labels src/i18n/locales/*/common.json	Adds update settings, update mode, and downloaded-update strings across the supported locales.

Estimated code review effort: 4 (Complex) | ~45 minutes

Merge Risk: 🔵 Low · up to 9c84f

The PR adds persistent update preferences and automatic background installation flows. A recording could begin while the restart prompt is open, a failed settings write could revert the selected mode after restart, and some background installation failures may not be shown to users; these are bounded follow-up risks that should have explicit owner awareness before merge.

Sequence Diagram(s)

sequenceDiagram
  participant Tray
  participant MainProcess
  participant UpdatePolicy
  participant UpdateService
  participant SettingsFile
  Tray->>MainProcess: select update mode
  MainProcess->>SettingsFile: saveUpdateMode
  MainProcess->>UpdateService: check for update
  UpdateService-->>MainProcess: update status
  MainProcess->>UpdatePolicy: planBackgroundUpdate
  UpdatePolicy-->>MainProcess: update action
  MainProcess->>UpdateService: download and install when selected
  UpdateService-->>Tray: update result or status

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Suggested reviewers: etiennelescot

🚥 Pre-merge checks | ✅ 2 | ❌ 3

❌ Failed checks (3 warnings)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description includes all required sections and detailed behavior and testing information, but it uses “Fixes #301” while explicitly stating that requested behaviors remain unimplemented.	Change the issue reference to “Refs #301”, “Related to #301”, or “Part of #301” unless the PR fully implements issue #301.
Linked Issues check	⚠️ Warning	The PR implements update checking, version comparison, notifications, manual downloading, persisted modes, and current-versus-available version display [#301]. However, the download-and-install mode s…	Either implement automatic installation for the download-and-install mode or update issue #301 and its acceptance criteria to explicitly require user confirmation before installation.
Docstring Coverage	⚠️ Warning	Docstring coverage is 6.25% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 16 functions across 5 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the primary changes: persisted update settings and a background update check.
Out of Scope Changes check	✅ Passed	The settings persistence, background timer, update dialogs, tests, and localization changes support the update-management objectives. No unrelated code changes are evident.

Full details: Linked Issues check

Explanation

The PR implements update checking, version comparison, notifications, manual downloading, persisted modes, and current-versus-available version display [#301]. However, the download-and-install mode still requires an explicit restart choice, so installation is not automatic as requested [#301].

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Actionable comments posted: 1

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Inline comments:
In `@electron/background-update.ts`:
- Around line 67-72: Update the update flow after deps.download() to return the
unavailable result for current or unsupported outcomes, before checking
deps.blocked() or calling confirmRestart(). Preserve the existing failed,
blocked, cancelled, and installed paths, and add coverage verifying neither
confirmRestart nor install runs for non-downloaded outcomes.

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📥 Commits

Reviewing files that changed from the base of the PR and between 059f4e8 and be8dccb.

📒 Files selected for processing (18)

• electron/background-update.test.ts
• electron/background-update.ts
• electron/main.ts
• electron/update-settings.test.ts
• electron/update-settings.ts
• src/i18n/locales/ar/common.json
• src/i18n/locales/en/common.json
• src/i18n/locales/es/common.json
• src/i18n/locales/fr/common.json
• src/i18n/locales/it/common.json
• src/i18n/locales/ja-JP/common.json
• src/i18n/locales/ko-KR/common.json
• src/i18n/locales/pt-BR/common.json
• src/i18n/locales/ru/common.json
• src/i18n/locales/tr/common.json
• src/i18n/locales/vi/common.json
• src/i18n/locales/zh-CN/common.json
• src/i18n/locales/zh-TW/common.json

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[My-Denia]

Addressed in 9c84fd3: any non-downloaded outcome now returns early as unavailable before the blocked check and the restart prompt. Today's downloadSelfUpdate only reports downloaded or failed, so this is a type-level guard — but the test now asserts that neither confirmRestart nor install runs for a current or unsupported outcome.