---
phase: 21-polish-integration
plan: 03
subsystem: ui
tags: [react, tanstack-router, tailwind, responsive, navigation]

# Dependency graph
requires:
  - phase: 19-agent-inbox
    provides: InboxList, MessageCard, QuestionForm components and inbox page
  - phase: 18-initiative-detail
    provides: TaskRow, PhaseAccordion, initiative detail page
provides:
  - Cross-screen navigation between inbox and initiative detail
  - Mobile-responsive inbox detail panel with drill-down pattern
affects: [21-polish-integration]

# Tech tracking
tech-stack:
  added: []
  patterns: [mobile drill-down pattern for list-detail views]

key-files:
  modified:
    - packages/web/src/layouts/AppLayout.tsx
    - packages/web/src/components/TaskRow.tsx
    - packages/web/src/routes/inbox.tsx

key-decisions:
  - "Removed disabled nav stubs (Agents, Tasks, Settings) — stubs create false promises for v2.0"
  - "TaskRow agent names link to /inbox — simplest cross-screen navigation for agent context"
  - "Inbox task links go to /initiatives — no direct task-to-initiative mapping on frontend"
  - "Mobile drill-down hides list when detail selected — standard mobile pattern"

patterns-established:
  - "Mobile drill-down: hide list on mobile when detail selected, show back button with lg:hidden"

# Metrics
duration: 4min
completed: 2026-02-05
---

# Phase 21 Plan 03: Cross-Screen Navigation & Mobile Responsive Summary

**Cross-screen navigation links between inbox and initiatives, mobile drill-down pattern for inbox detail panel**

## Performance

- **Duration:** 4 min
- **Started:** 2026-02-05T07:50:00Z
- **Completed:** 2026-02-05T07:54:00Z
- **Tasks:** 2
- **Files modified:** 3

## Accomplishments
- Removed disabled nav stubs (Agents, Tasks, Settings) from AppLayout to eliminate visual clutter
- TaskRow agent names are now clickable links to the inbox page
- Inbox detail panel shows linked taskId and "View in context" link to initiatives
- Mobile users can access inbox detail panel via drill-down pattern with back button

## Task Commits

Each task was committed atomically:

1. **Task 1: Add cross-screen navigation links** - `c52c6f1` (feat)
2. **Task 2: Fix mobile responsive layout for detail panels** - `1e1aada` (feat)

## Files Created/Modified
- `packages/web/src/layouts/AppLayout.tsx` - Removed disabled nav items, simplified nav rendering
- `packages/web/src/components/TaskRow.tsx` - Agent name is now a Link to /inbox
- `packages/web/src/routes/inbox.tsx` - Task link, "View in context" link, mobile back button, list hiding

## Decisions Made
- Removed Agents/Tasks/Settings disabled nav items — they were stubs that will never be implemented in v2.0
- Task links in inbox go to /initiatives (no direct task-to-initiative mapping on frontend)
- Mobile drill-down pattern: hide list column on mobile when agent selected, show back button

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
None

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- Plan 21-03 complete, ready for 21-04 (Subscription Error Handling)
- All cross-screen navigation in place
- Mobile responsive inbox working

---
*Phase: 21-polish-integration*
*Completed: 2026-02-05*
