[CI] Epic: TW Entrypoints + Polishing + TRA

[jasminetay-moe]

Epic: TW Entrypoints + Polishing + TRA

Surface Glow CI to teachers via recommendation cards on the TW student profile, refine the AI experience, instrument analytics, and complete the Technical Risk Assessment for pilot launch.

Key capabilities:

• Recommendation cards on TW student profile (render + trigger)
• Further learning links and feedback mechanism
• LLM guardrails testing + refinement
• Cloud Logging + Vertex AI Evaluation Service instrumentation
• Analytics instrumentation (GA4 + server-side logging)
• Technical Risk Assessment (TRA) sign-off for pilot

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Definition of Done

• Recommendation cards render correctly on TW student profile for all 5 pilot signals
• Cards click through to pre-loaded AI chat
• LLM guardrails validated; no out-of-scope responses in test suite
• Feedback mechanism live and logging responses
• Analytics events firing correctly (cards, chat, citations)
• TRA completed and signed off — pilot cleared for GA launch