feat(live-update): add Electron platform support

[robingenz]

What

Adds the Electron platform implementation to @capawesome/capacitor-live-update, targeting the @capawesome/capacitor-electron platform. The adapter is a thin mapping layer: all download/verify/store/rollback logic lives in the @capawesome/electron-live-update engine (./engine subpath, main-process only — zero runtime impact for mobile/web consumers).

• electron/src/index.ts: LiveUpdateElectron implementing all 26 LiveUpdatePlugin methods with the platform's static marker metadata. initialize() lifecycle hook runs engine.initialize() (kill-safe boot rollback) and repoints via services.bundles.setActiveBundle(..., { bootWatchdog: false }) before the first window load — the engine owns rollback, the platform watchdog stays disarmed.
• Feature scope: zip artifacts (manifest/delta is not supported on desktop — mobile optimization, decision 2026-07-17), channels, code signing, blocked bundles, autoUpdateStrategy: 'background' (throttled sync on ready/window-focus/power resume). setConfig/resetConfig reject as unimplemented on Electron.
• Sends runtime=capacitor + platform=2 + the plugin package version as pluginVersion — same cloud app and appId as the mobile targets.
• Packaging: ESM electron/dist/plugin.mjs (rollup), capacitor.electron.src, build:electron/verify:electron scripts, version constant synced by the existing release script.
• Docs: per-method platform availability in definitions.ts + docgen, README Electron installation section. Changeset: minor.

Verification

• verify:web, build:electron/verify:electron, eslint, prettier — all green (swiftlint failures are pre-existing in untouched iOS files).
• Compile-level only; runtime e2e (example app on the Electron platform) follows in a separate PR.
• Note: verify:electron type-resolves the engine from the sibling repo checkout until @capawesome/electron-live-update@0.1.0 is published (release-order gate).

Related PRs

• https://github.com/capawesome-team/cloud-api-worker/pull/695 — backend: Electron platform support (runtime combos, version constraints, artifact gating)
• feat: add channel discovery and rolledBack event electron-live-update#1 — engine: manifest delta updates, channel discovery, rolledBack event
• feat: plugin lifecycle, watchdog opt-out, and splash screen capacitor-electron#6 — platform: watchdog opt-out + async plugin initialize() hook
• feat: add Electron app version constraint flags for live update bundles cli#185 — CLI: Electron version-constraint upload flags

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Adds Electron platform support to @capawesome/capacitor-live-update by introducing a new Electron adapter implementation, wiring up build tooling, and updating public docs/API annotations to reflect Electron availability.

Changes:

• Add an Electron main-process adapter (LiveUpdateElectron) backed by @capawesome/electron-live-update/engine.
• Add Electron build pipeline (TS + Rollup), plugin version syncing, and package metadata updates.
• Update docs and API JSDoc to mark methods/options as available on Electron and document Electron-specific behavior.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
packages/live-update/src/definitions.ts	Updates platform availability/docs for Electron across config/methods/types.
packages/live-update/scripts/sync-plugin-version.mjs	Extends version sync script to update the Electron version constant.
packages/live-update/README.md	Documents Electron support and updates generated doc sections for Electron availability.
packages/live-update/package.json	Adds Electron packaging/scripts and introduces the Electron engine dependency.
packages/live-update/electron/tsconfig.json	Adds Electron-specific TypeScript config for building the adapter.
packages/live-update/electron/src/version.ts	New version constant consumed by the Electron adapter/engine config.
packages/live-update/electron/src/index.ts	New Electron adapter implementation mapping plugin API to the engine.
packages/live-update/electron/src/definitions.ts	Defines the minimal Electron platform context contract used by the adapter.
packages/live-update/electron/rollup.config.mjs	Builds the Electron adapter into an ESM bundle for the platform loader.
.changeset/live-update-electron-platform.md	Declares a minor release for introducing Electron support.

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[Copilot]

Pull request overview

Copilot reviewed 25 out of 25 changed files in this pull request and generated 3 comments.

[robingenz]

CI status note: the Install Node.js dependencies failures are expected and not fixable in this PR — @capawesome/electron-live-update (runtime dependency of the new Electron implementation) and @capawesome/capacitor-electron (devDependency for types) are not yet published to npm. This is the documented release-order gate: once capawesome-team/electron-live-update#1 and capawesome-team/capacitor-electron#6 are merged and released, the example lockfile gets regenerated and CI here turns green. All compile-level verification (verify:web, verify:electron) and the full 8-flow Electron e2e suite pass locally against the sibling checkouts.