feat: show OMP advisor feedback

[ClemDNL]

OMP advisor feedback is visible through ACP as agent-thought metadata and an untyped advisor_feedback session update, so Kandev now preserves that side-channel in the normal session feed instead of making agent replies look one-sided.

Important Changes

• Normalizes ACP advisor payloads into advisor_feedback stream events before the generic reasoning path so advisor text is not hidden as thinking.
• Persists advisor feedback as ordinary session-feed messages with advisor metadata, renders them with an OMP Advisor Feedback label, and keeps them visible in message grouping/filtering.

Validation

• make fmt
• go test ./internal/agentctl/server/adapter/transport/acp ./internal/integration -run 'TestConvertNotification_AdvisorThoughtChunkMeta|TestTryConvertUntypedUpdate_AdvisorFeedback|TestAdvisorFeedbackEventsPersistToDatabase'
• pnpm --filter @kandev/web test -- use-processed-messages.test.ts message-renderer.test.ts
• make build-backend
• make build-web
• pnpm --filter @kandev/web e2e -- tests/chat/advisor-feedback.spec.ts
• make typecheck
• make lint
• Full make typecheck test lint was attempted before commit and failed in an existing backend process test (TestProcessRunnerCapturesOutput: process output not captured in time); the targeted advisor tests above passed.
• Manual live preview on local seeded task confirmed OMP Advisor Feedback and advisor content render in the session feed.

UI

Checklist

• I have performed a self-review of my code.
• I have manually tested my changes and they work as expected.
• My changes have tests that cover the new functionality and edge cases.
• If my change touches UI files (apps/web/), I have added or updated Playwright e2e tests in apps/web/e2e/ and verified them with make test-e2e.

[coderabbitai]

Caution

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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