Merge main into project migration branch

docs/testing.md

@@ -124,6 +124,16 @@ PASEO_DESKTOP_SMOKE_ARTIFACT_DIR=/tmp/paseo-desktop-smoke \
 npm run build:desktop -- --publish never --linux --x64 --dir
 ```
 
+### Browser tab bridge regression
+
+The desktop browser tab bridge E2E launches an isolated real daemon, Metro, and Electron app. It forces workspace LRU eviction to reparent the original tab and replace its guest `WebContents`, then makes one MCP call each for tab listing, snapshot, and click against that original browser id. A final MCP wait proves the real target page received the click.
+
+Run it locally with the same command owned by the Ubuntu leg of the existing `desktop-tests` CI check:
+
+```bash
+npm run test:e2e:browser-tab-bridge --workspace=@getpaseo/desktop
+```
+
 ## Test organization
 
 - Collocate tests with implementation: `thing.ts` + `thing.test.ts`
@@ -176,6 +186,7 @@ Test suites in this repo are heavy. Running them in bulk freezes the machine, es
 - Never run the full Playwright E2E suite locally — defer whole-suite verification to CI. Targeted Playwright specs are allowed when you changed or need to prove that specific flow.
 - App Playwright specs share one isolated daemon per run. Helpers that create projects or workspaces must remove the daemon project record during cleanup, not only delete the temp directory. Agent helpers must pass the intended `workspaceId` through to agent creation; never infer ownership from `cwd`.
 - CI can shard app Playwright across multiple jobs; each shard still owns a full isolated daemon/relay/Metro stack from global setup. Helpers that restart the daemon must preserve the global setup environment, including disabled speech/local-model settings, so a restart does not change the tested surface or start background downloads.
+- Global setup starts Metro before Wrangler, assigns Wrangler explicit distinct relay and inspector ports, and accepts Metro as ready only when `/status` returns `packager-status:running`. A generic TCP listener is not sufficient readiness evidence.
 
 ## Agent authentication in tests