Build the current workspace snapshot on native CI runners

This branch snapshots the in-progress desktop workspace so GitHub-hosted Windows and Linux runners can package the same source tree that already passes local verification on macOS.

Constraint: Local Apple Silicon Docker/Wine packaging crashes before Windows artifacts are produced
Rejected: Publish from the incomplete base repo state | remote typecheck failed because current source additions were missing
Confidence: medium
Scope-risk: broad
Directive: Treat this branch as a build snapshot only; do not merge it without reviewing the unrelated workspace changes it contains
Tested: local typecheck, lint, workspace typecheck, unit tests, integration tests, e2e smoke, macOS signed release upload
Not-tested: Native Windows/Linux artifacts before this CI run

README.md

@@ -126,12 +126,14 @@ pnpm build:verify
 pnpm build        # Compile + package for current platform → /build/release
 pnpm build:dir    # Compile + unpackaged directory
 pnpm build:all    # Build for all platforms
+pnpm release:local # Signed/uploading release pipeline (see docs/release/local-r2.md)
 ```
 
 - **Targets:** macOS (`.dmg`), Windows (`.exe` / NSIS), Linux (`.AppImage`)
 - Packaging uses `electron-builder`
 - Local builds use ad-hoc signing (`CSC_IDENTITY_AUTO_DISCOVERY=false`)
 - Defaults to `--publish never`; override with `AGENTCOMPANY_ELECTRON_PUBLISH`
+- Cloudflare R2 release hosting + auto-update pipeline: `docs/release/local-r2.md`
 
 ---