chore: refactor browser slots for clarity

[pavelfeldman]

No description provided.

[github-actions]

Test results for "MCP"

2 failed
❌ [chrome] › mcp/cli-session.spec.ts:159 › workspace isolation - sessions in different workspaces are isolated @mcp-windows-latest
❌ [chrome] › mcp/cli-session.spec.ts:191 › list --all lists sessions from all workspaces @mcp-windows-latest

6547 passed, 913 skipped

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Merge workflow run.

[github-actions]

Test results for "tests 1"

1 failed
❌ [playwright-test] › reporter-html.spec.ts:1022 › merged › should render annotations as link if needed @ubuntu-latest-node22

9 flaky

⚠️ [chromium-library] › library/video.spec.ts:719 › screencast › should work with video+trace `@ubuntu-22.04-chromium-tip-of-tree`
⚠️ [chromium-library] › library/video.spec.ts:682 › screencast › should capture full viewport on hidpi `@chromium-ubuntu-22.04-arm-node20`
⚠️ [chromium-library] › library/video.spec.ts:719 › screencast › should work with video+trace `@chromium-ubuntu-22.04-arm-node20`
⚠️ [chromium-library] › library/video.spec.ts:719 › screencast › should work with video+trace `@chromium-ubuntu-22.04-node22`
⚠️ [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`
⚠️ [playwright-test] › ui-mode-test-output.spec.ts:118 › should collapse repeated console messages for test `@ubuntu-latest-node20`
⚠️ [playwright-test] › ui-mode-trace.spec.ts:700 › should indicate current test status `@windows-latest-node20`

41260 passed, 847 skipped

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Merge workflow run.