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nexus/.planning/phases/21-chat-foundation/21-04-SUMMARY.md
Nexus Dev f4fc4ebf13 docs(21-04): complete chat panel shell plan 
- 21-04-SUMMARY.md with task details, deviations, known stubs
- STATE.md: advanced to plan 4, updated progress 67%, added decisions
- ROADMAP.md: phase 21 updated (4/6 summaries)
- REQUIREMENTS.md: INPUT-01 and THEME-01 marked complete
2026-04-04 03:55:47 +00:00

5.2 KiB
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phase plan subsystem tags dependency_graph tech_stack key_files decisions metrics
21-chat-foundation 04 ui
chat
context
components
layout
tdd
requires provides affects
21-00
21-02
ChatPanelContext
ChatPanel
ChatInput
ChatMessage
Layout
main.tsx
added patterns
Context + hook pattern with localStorage persistence
TDD with jsdom+createRoot
created modified
ui/src/context/ChatPanelContext.tsx
ui/src/components/ChatPanel.tsx
ui/src/components/ChatInput.tsx
ui/src/components/ChatMessage.tsx
ui/src/components/ChatInput.test.tsx
ui/src/components/Layout.tsx
ui/src/main.tsx
ChatPanelProvider inserted inside PanelProvider so ChatPanel can call setPanelVisible to close PropertiesPanel on open
Chat toggle button placed in desktop sidebar bottom controls with hidden md:inline-flex (same cluster as settings and theme)
ChatMessage uses plain text for user role (no markdown) and ChatMarkdownMessage for assistant role
duration completed tasks_completed files_created files_modified
~4 minutes 2026-04-01 2 4 3

Phase 21 Plan 04: Chat Panel Shell and Context Summary

One-liner: Chat drawer shell with ChatPanelProvider (localStorage persistence), auto-resize ChatInput (Enter/Shift+Enter/Escape), ChatMessage bubbles, and Layout integration toggling PropertiesPanel closed on open.

Tasks Completed

Task Name Commit Files
1 Create ChatPanelContext, ChatInput, ChatMessage (TDD) acfe2a7a ChatPanelContext.tsx, ChatInput.tsx, ChatMessage.tsx, ChatInput.test.tsx
2 Create ChatPanel shell and wire into Layout + main.tsx b1c9dbfb ChatPanel.tsx, Layout.tsx, main.tsx

What Was Built

ChatPanelContext (ui/src/context/ChatPanelContext.tsx)

Mirrors PanelContext pattern:

  • STORAGE_KEY = "nexus:chat-panel-open" — localStorage persistence
  • Default state: false (chat starts closed, unlike PropertiesPanel which defaults to visible)
  • Exports ChatPanelProvider and useChatPanel
  • Tracks chatOpen, activeConversationId, setChatOpen, toggleChat, setActiveConversationId

ChatInput (ui/src/components/ChatInput.tsx)

  • <textarea> with [field-sizing:content] for modern auto-resize + useEffect fallback via scrollHeight
  • max-h-[160px] min-h-[40px] constraints
  • onKeyDown: Enter (no Shift, no composing) → submit; Escape → clear; Shift+Enter → native newline
  • Send Button variant="ghost" size="icon" with aria-label="Send message"
  • Shows Loader2 animate-spin when isSubmitting=true; button disabled when empty or submitting

ChatMessage (ui/src/components/ChatMessage.tsx)

  • User role: right-aligned bubble with bg-secondary px-3 py-2 — plain text (no markdown)
  • Assistant/system role: full-width, rendered via ChatMarkdownMessage

ChatPanel (ui/src/components/ChatPanel.tsx)

  • <aside aria-label="Chat"> with hidden md:flex (desktop only)
  • Width animation: style={{ width: chatOpen ? 380 : 0 }} + transition-[width] duration-100 ease-out
  • min-w-[380px] on inner containers prevents content collapse during animation
  • Two-column: 160px conversation list placeholder (Plan 05) + flex thread area with ScrollArea + ChatInput
  • Header with X close button (setChatOpen(false))

Layout.tsx Changes

  • Added imports: MessageSquare from lucide, ChatPanel, useChatPanel
  • const { chatOpen, toggleChat } = useChatPanel() in Layout()
  • useEffect closes PropertiesPanel when chatOpen becomes true via setPanelVisible(false)
  • Chat toggle Button with aria-label="chat open/close" in desktop sidebar bottom controls
  • <ChatPanel /> rendered before <PropertiesPanel /> in the flex row

main.tsx Changes

  • ChatPanelProvider wraps app inside PanelProvider (ordering ensures ChatPanel can access PanelContext)

Verification Results

  • TypeScript: pnpm --filter @paperclipai/ui exec -- tsc --noEmit — passes (no errors)
  • Tests: pnpm vitest run ui/src/components/ChatInput.test.tsx — 6/6 passing
  • Acceptance criteria: all verified via grep checks

Deviations from Plan

Auto-fixed Issues

1. [Rule 1 - Bug] Fixed createRoot warning in tests

  • Found during: Task 1 (TDD RED→GREEN)
  • Issue: The afterEach cleanup was calling createRoot(container) on an already-rooted container, producing a React warning
  • Fix: Track the root in a let root variable in the describe scope, unmount it in afterEach rather than creating a new root to unmount
  • Files modified: ui/src/components/ChatInput.test.tsx
  • Commit: acfe2a7a

None of the original plan tasks required architectural changes.

Known Stubs

File Location Description Resolved by
ui/src/components/ChatPanel.tsx onSend handler console.log("send:", content) — not wired to API Plan 05
ui/src/components/ChatPanel.tsx Conversation list column "No conversations yet" placeholder Plan 05
ui/src/components/ChatPanel.tsx Message thread area "Send a message to start this conversation." placeholder Plan 05

These stubs are intentional — Plan 04 is the shell/skeleton. Plan 05 wires the API.

Self-Check: PASSED