[codex] Integrate chat debug into sidenav footer

[blove]

Summary

• Move chat debug behind the @ngaf/chat/debug secondary entry point and wire the chat sidenav footer to launch it from [debug] + [agent].
• Remove the public projected debug controls/primitives surface and move canonical demo controls into the demo toolbar.
• Add NGAF_CHAT_DEBUG production gating, bundle verification, docs/generated context updates, and sidebar/debug coexistence coverage.

Validation

• env -u NO_COLOR npx nx build chat --skip-nx-cache
• env -u NO_COLOR npx vitest run src/lib/compositions/chat-debug-secondary.spec.ts src/lib/compositions/chat-sidenav/chat-sidenav.component.spec.ts --config vite.config.mts --reporter dot
• env -u NO_COLOR npx nx build examples-chat-angular --configuration=production --skip-nx-cache && node tools/verify-chat-debug-bundle.mjs dist/examples/chat/angular absent
• env -u NO_COLOR npx nx build examples-chat-angular --configuration=production-debug --skip-nx-cache && node tools/verify-chat-debug-bundle.mjs dist/examples/chat/angular present
• npx playwright test examples/chat/angular/e2e/sidebar-mode-coexistence.spec.ts --config examples/chat/angular/e2e/playwright.config.ts
• Chrome DevTools MCP smoke: verified labelled footer debug button, bottom edge claim, and demo toolbar outside debug panel.

Notes

• Normal production builds externalize @ngaf/chat/debug and verify debug implementation sentinels are absent.
• production-debug opts back in explicitly with NGAF_CHAT_DEBUG=true.

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Project	Deployment	Actions	Updated (UTC)
cacheplane	Ready	Preview, Comment	May 18, 2026 7:07pm