feat(docs): add Slack reporting for interesting docs bot prompts

[sarinali]

Summary

• Analyzes each docs bot prompt with Haiku to score on actionability, traction signal, and use case insight
• Posts only interesting prompts (score >= 7/10 on any criterion) to a Slack channel via incoming webhook
• Fire-and-forget async pattern — zero impact on user response latency
• Also fixes the pre-commit tsc hook that was failing due to lockfile rewrites

Changes

• docs/src/lib/prompt-analyzer.ts — Haiku classification call with threshold filtering
• docs/src/lib/slack-reporter.ts — Slack Block Kit message formatting and webhook posting
• docs/src/app/api/copilotkit/route.ts — async hook after PostHog capture, hoisted categorization
• docs/.env.example — added SLACK_WEBHOOK_URL
• scripts/typescript-typecheck.js — restore lockfile after install to fix pre-commit

Test plan

• Set SLACK_WEBHOOK_URL env var in Vercel/local
• Send a specific prompt (e.g., "How do I set up Cua for automated QA testing in our fintech pipeline?") and verify Slack post appears
• Send generic prompts ("what is cua?", "hello") and verify they do NOT post to Slack
• Verify bot response latency is unaffected
• Verify no errors when SLACK_WEBHOOK_URL is unset

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated (UTC)
docs	Ready	Preview, Comment	Feb 17, 2026 5:52pm