chore(extension): warn when Playwright Extension is missing from profile

[yury-s]

Summary

• Before spawning Chrome, the MCP relay checks whether the Playwright Extension is present in the target user-data-dir. If missing, we log a hint with the install URL to stderr and continue (instead of the previous 5s connect timeout).
• Extension presence is detected via Default/Extensions/<id> (web store install) with a fallback of grepping Default/Preferences for the id (--load-extension).
• Extracts the Chromium channel → default user-data-dir map into shared packages/utils/chromiumChannels.ts, used by chromium.ts and the MCP relay. cli-client/channelSessions.ts keeps its own copy since its strict per-file build can't resolve @utils/* at runtime.

[github-actions]

Test results for "tests 1"

6 flaky

⚠️ [chromium-library] › library/popup.spec.ts:261 › should not throw when click closes popup `@ubuntu-22.04-chromium-tip-of-tree`
⚠️ [chromium-library] › library/video.spec.ts:476 › screencast › should capture static page in persistent context @smoke `@ubuntu-22.04-chromium-tip-of-tree`
⚠️ [chromium-library] › library/video.spec.ts:719 › screencast › should work with video+trace `@chromium-ubuntu-22.04-node24`
⚠️ [firefox-library] › library/inspector/cli-codegen-1.spec.ts:1080 › cli codegen › should not throw csp directive violation errors `@firefox-ubuntu-22.04-node20`
⚠️ [firefox-page] › page/page-wait-for-function.spec.ts:104 › should work with strict CSP policy `@firefox-ubuntu-22.04-node20`
⚠️ [webkit-library] › library/video.spec.ts:275 › screencast › should capture navigation `@webkit-ubuntu-22.04-node20`

41451 passed, 847 skipped

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Merge workflow run.

[github-actions]

Test results for "MCP"

29 failed
❌ [chrome] › mcp/dashboard.spec.ts:207 › should enter annotate mode on fresh dashboard.tsx mount with -s --annotate @mcp-windows-latest
❌ [chrome] › mcp/dashboard.spec.ts:231 › should switch screencast to -s session on show --annotate @mcp-windows-latest
❌ [firefox] › mcp/cli-devtools.spec.ts:141 › video-start-stop @mcp-windows-latest
❌ [firefox] › mcp/cli-devtools.spec.ts:155 › video-chapter @mcp-windows-latest
❌ [firefox] › mcp/cli-session.spec.ts:159 › workspace isolation - sessions in different workspaces are isolated @mcp-windows-latest
❌ [webkit] › mcp/dashboard.spec.ts:280 › should disengage annotate mode when --annotate client disconnects @mcp-windows-latest
❌ [webkit] › mcp/dashboard.spec.ts:347 › save recording streams WebM bytes to the chosen file @mcp-windows-latest
❌ [msedge] › mcp/cli-core.spec.ts:31 › close @mcp-windows-latest
❌ [msedge] › mcp/cli-devtools.spec.ts:141 › video-start-stop @mcp-windows-latest
❌ [msedge] › mcp/cli-devtools.spec.ts:155 › video-chapter @mcp-windows-latest
❌ [msedge] › mcp/cli-json.spec.ts:171 › close after open returns closed status @mcp-windows-latest
❌ [msedge] › mcp/cli-json.spec.ts:177 › close-all after open returns closed sessions @mcp-windows-latest
❌ [msedge] › mcp/cli-session.spec.ts:50 › close @mcp-windows-latest
❌ [msedge] › mcp/cli-session.spec.ts:60 › close named session @mcp-windows-latest
❌ [msedge] › mcp/cli-session.spec.ts:72 › persistent session shows in list after close @mcp-windows-latest
❌ [msedge] › mcp/cli-session.spec.ts:85 › close-all @mcp-windows-latest
❌ [msedge] › mcp/cli-session.spec.ts:99 › delete-data @mcp-windows-latest
❌ [msedge] › mcp/cli-session.spec.ts:111 › delete-data named session @mcp-windows-latest
❌ [msedge] › mcp/cli-session.spec.ts:128 › session stops when browser exits @mcp-windows-latest
❌ [msedge] › mcp/cli-session.spec.ts:142 › session reopen with different config @mcp-windows-latest
❌ [msedge] › mcp/cli-session.spec.ts:159 › workspace isolation - sessions in different workspaces are isolated @mcp-windows-latest
❌ [msedge] › mcp/cli-session.spec.ts:191 › list --all lists sessions from all workspaces @mcp-windows-latest
❌ [msedge] › mcp/dashboard.spec.ts:124 › daemon show: closing page exits the process @mcp-windows-latest
❌ [msedge] › mcp/dashboard.spec.ts:164 › should capture annotations via show --annotate @mcp-windows-latest
❌ [msedge] › mcp/dashboard.spec.ts:185 › should start dashboard and annotate when no dashboard is running @mcp-windows-latest
❌ [msedge] › mcp/dashboard.spec.ts:207 › should enter annotate mode on fresh dashboard.tsx mount with -s --annotate @mcp-windows-latest
❌ [msedge] › mcp/dashboard.spec.ts:231 › should switch screencast to -s session on show --annotate @mcp-windows-latest
❌ [msedge] › mcp/dashboard.spec.ts:280 › should disengage annotate mode when --annotate client disconnects @mcp-windows-latest
❌ [msedge] › mcp/dashboard.spec.ts:347 › save recording streams WebM bytes to the chosen file @mcp-windows-latest

6582 passed, 916 skipped

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Merge workflow run.