--- phase: 22-agent-streaming plan: "00" subsystem: database, ui, testing tags: [drizzle, tailwind, tanstack-virtual, vitest, chat, agent-roles] # Dependency graph requires: - phase: 21-chat-foundation provides: chat_messages schema, ChatMessage type, existing chat UI components provides: - updatedAt column on chat_messages table (migration 0048) - updatedAt field on ChatMessage shared type - @tanstack/react-virtual installed in ui workspace - agentRoleColors utility with 11 distinct themed role colors (THEME-03) - agentRoleColorDefault fallback - cursor-blink CSS animation with reduced-motion guard - 7 Wave 0 test stub files for Phase 22 components/hooks affects: [22-01, 22-02, 22-03, 22-04, 22-05] # Tech tracking tech-stack: added: ["@tanstack/react-virtual"] patterns: ["agent-role-colors utility (Record with light+dark variants)", "it.todo() Wave 0 test scaffolding (established in Phase 21)"] key-files: created: - packages/db/src/migrations/0048_add_chat_messages_updated_at.sql - ui/src/lib/agent-role-colors.ts - ui/src/lib/agent-role-colors.test.ts - ui/src/hooks/useStreamingChat.test.ts - ui/src/components/ChatAgentSelector.test.tsx - ui/src/components/ChatMessage.test.tsx - ui/src/components/ChatSlashCommandPopover.test.tsx - ui/src/components/ChatMentionPopover.test.tsx - ui/src/components/ChatMessageIdentityBar.test.tsx - ui/src/components/ChatMessageList.test.tsx modified: - packages/db/src/schema/chat_messages.ts - packages/shared/src/types/chat.ts - ui/src/index.css - ui/package.json key-decisions: - "THEME-03: 11 agent roles each assigned a unique Tailwind color class — pm=blue, engineer=violet, ceo=amber, general=slate, designer=pink, qa=orange, researcher=teal, devops=emerald, cto=indigo, cmo=rose, cfo=cyan" - "updatedAt on chat_messages is nullable (no .notNull()) — existing rows will have null until updated" patterns-established: - "agentRoleColors pattern: Record with 'text-X-600 dark:text-X-400' dual-variant format, mirrors status-colors.ts convention" - "CSS animation pattern: @keyframes + .animate-* class + @media prefers-reduced-motion guard" requirements-completed: [THEME-03] # Metrics duration: 8min completed: 2026-04-01 --- # Phase 22 Plan 00: Wave 0 Foundation Summary **DB migration adding updated_at to chat_messages, ChatMessage type update, @tanstack/react-virtual install, 11-role agent-role-colors utility (THEME-03), cursor-blink CSS animation, and 7 Wave 0 test stubs** ## Performance - **Duration:** 8 min - **Started:** 2026-04-01T18:05:00Z - **Completed:** 2026-04-01T18:13:00Z - **Tasks:** 2 - **Files modified:** 14 ## Accomplishments - chat_messages schema and migration 0048 add nullable updated_at column - @tanstack/react-virtual installed and ChatMessage type updated with updatedAt: string | null - agent-role-colors.ts covers all 11 AgentRole values with visually distinct colors (THEME-03 — no two roles share a color), tested with 4-test suite - cursor-blink CSS animation with prefers-reduced-motion guard added to index.css - 7 test stub files created covering all Phase 22 components and hooks ## Task Commits Each task was committed atomically: 1. **Task 1: DB migration, shared types, react-virtual, agent-role-colors, CSS animation** - `96b27119` (feat) 2. **Task 2: Wave 0 test stubs for Phase 22 components/hooks** - `baba7e3a` (test) ## Files Created/Modified - `packages/db/src/migrations/0048_add_chat_messages_updated_at.sql` - ALTER TABLE to add updated_at with DEFAULT now() - `packages/db/src/schema/chat_messages.ts` - Added updatedAt column (nullable timestamp) - `packages/shared/src/types/chat.ts` - Added updatedAt: string | null to ChatMessage interface - `ui/package.json` - Added @tanstack/react-virtual dependency - `ui/src/lib/agent-role-colors.ts` - Record with 11 distinct light+dark color pairs - `ui/src/lib/agent-role-colors.test.ts` - 4 tests: coverage, dark variants, default, uniqueness - `ui/src/index.css` - cursor-blink keyframes + .animate-cursor-blink + reduced-motion guard - `ui/src/hooks/useStreamingChat.test.ts` - 5 it.todo() stubs - `ui/src/components/ChatAgentSelector.test.tsx` - 5 it.todo() stubs - `ui/src/components/ChatMessage.test.tsx` - 8 it.todo() stubs - `ui/src/components/ChatSlashCommandPopover.test.tsx` - 5 it.todo() stubs - `ui/src/components/ChatMentionPopover.test.tsx` - 4 it.todo() stubs - `ui/src/components/ChatMessageIdentityBar.test.tsx` - 4 it.todo() stubs - `ui/src/components/ChatMessageList.test.tsx` - 5 it.todo() stubs ## Decisions Made - THEME-03: Each of the 11 roles gets a unique hue family — pm=blue, engineer=violet, ceo=amber, general=slate, designer=pink, qa=orange, researcher=teal, devops=emerald, cto=indigo, cmo=rose, cfo=cyan. Previous plans had duplicates (ceo+general yellow, etc.) which this corrects. - updatedAt nullable (no .notNull()): existing rows left as null until touched, prevents data migration requirement. ## Deviations from Plan None - plan executed exactly as written. ## Issues Encountered None — all acceptance criteria met on first attempt. TypeScript type check passes clean. ## Known Stubs None — test stubs are intentional Wave 0 scaffolding (it.todo pattern), not data stubs. All 7 stub files will be implemented in Plans 22-01 through 22-05. ## Next Phase Readiness - All Wave 0 foundations in place for Phase 22 Plans 01-05 - agent-role-colors.ts ready for ChatMessageIdentityBar (Plan 22-03) - @tanstack/react-virtual ready for ChatMessageList virtualization (Plan 22-04) - cursor-blink animation ready for ChatStreamingCursor (Plan 22-02) - DB migration 0048 ready for server-side streaming response inclusion of updatedAt --- *Phase: 22-agent-streaming* *Completed: 2026-04-01* ## Self-Check: PASSED All files verified present. Both task commits (96b27119, baba7e3a) verified in git log.