---
phase: 05-unified-search
plan: 02
subsystem: ui
tags: [react, tailwind, lucide-react, react-portal, keyboard-navigation, debounce]

# Dependency graph
requires:
  - phase: 05-unified-search plan 01
    provides: fanOutSearch service, GET /api/search route, search() client function returning grouped Source[] results

provides:
  - Cmd+K / Ctrl+K global keyboard shortcut opens search overlay from any page
  - CmdKSearch.jsx portal-based Spotlight-style modal with debounced search-as-you-type
  - useCmdKSearch.js hook for open/close state and keyboard shortcut registration
  - Grouped results display with icons, bold titles, keyword-highlighted snippets
  - Full keyboard navigation (ArrowDown/ArrowUp/Enter/Escape) and click navigation
  - Body scroll lock when overlay is open
  - No-results and loading states
  - "Show more" per-source expansion (3 results collapsed, all on expand)

affects:
  - Any future search enhancements (semantic, filtering, recents)
  - Layout.jsx (CmdKSearch mounted here permanently)

# Tech tracking
tech-stack:
  added: []
  patterns:
    - React portal for z-index-isolated overlay rendering (createPortal to document.body)
    - useEffect + setTimeout/clearTimeout debounce pattern (no external library)
    - Flat result list computed from grouped API response for keyboard navigation index tracking
    - Inline Highlight component using case-insensitive regex to wrap matched text in <mark>

key-files:
  created:
    - client/src/hooks/useCmdKSearch.js
    - client/src/components/CmdKSearch.jsx
  modified:
    - client/src/components/Layout.jsx
    - .changelog/v1.14.x.md

key-decisions:
  - "CmdKSearch renders via createPortal(document.body) for z-index isolation above sidebar"
  - "Flat result list derived from grouped sources to track focusedIndex across categories"
  - "300ms debounce threshold, 2+ character minimum — matches Spotlight/Raycast UX conventions"
  - "Top 3 results per source shown by default with Show More to expand — avoids overwhelming long lists"
  - "focusedIndex resets to 0 on every new results update to prevent stale selection"
  - "Cmd+K fires even when an input is focused — deliberate Spotlight-parity behavior"

patterns-established:
  - "Portal overlay pattern: render via createPortal to escape stacking context, onClick backdrop to dismiss"
  - "Debounce pattern: useEffect cleanup with clearTimeout, no lodash/external lib needed"
  - "Keyboard navigation: flat index over grouped data, ArrowDown/Up clamp to bounds, Enter navigates"

requirements-completed: [SRC-01, SRC-03, SRC-04]

# Metrics
duration: ~15min
completed: 2026-02-27
---

# Phase 5 Plan 02: Cmd+K Search Overlay UI Summary

**Spotlight-style Cmd+K search overlay with grouped results, keyword highlighting, full keyboard navigation, and React portal rendering — wired into the Layout shell and backed by the Phase 05-01 fan-out search API**

## Performance

- **Duration:** ~15 min
- **Started:** 2026-02-27T00:01:05Z
- **Completed:** 2026-02-27T00:20:00Z
- **Tasks:** 3 (2 auto + 1 human-verify checkpoint)
- **Files modified:** 4

## Accomplishments
- Built `useCmdKSearch.js` hook registering global Cmd+K / Ctrl+K shortcut to toggle overlay open state
- Built `CmdKSearch.jsx` — full Spotlight-style modal with debounced search, grouped source results, inline keyword highlighting, body scroll lock, and deep-link navigation via `useNavigate`
- Mounted `<CmdKSearch />` in `Layout.jsx` so the overlay is available on every page route

## Task Commits

Each task was committed atomically:

1. **Task 1: Create Cmd+K hook and search overlay component** - `8cdbee1` (feat)
2. **Task 2: Mount CmdKSearch in Layout.jsx** - `22484ed` (feat)
3. **Task 3: Human-verify checkpoint** - approved by user

## Files Created/Modified
- `client/src/hooks/useCmdKSearch.js` - Global Cmd+K/Ctrl+K keyboard shortcut hook returning `{ open, setOpen }`
- `client/src/components/CmdKSearch.jsx` - Spotlight-style search overlay: portal, debounce, grouped results, highlights, keyboard navigation
- `client/src/components/Layout.jsx` - Added `<CmdKSearch />` mount point
- `.changelog/v1.14.x.md` - Documented Cmd+K unified search feature

## Decisions Made
- `createPortal(document.body)` used for z-index isolation so the overlay renders above the sidebar regardless of stacking context
- Flat result list derived from grouped `sources[]` response to keep `focusedIndex` as a simple number across all categories
- 2-character minimum + 300ms debounce matches Spotlight/Raycast conventions (fast enough to feel instant, avoids noise on single char)
- Default 3 results per source with "Show more" keeps the overlay compact — full expansion available per-source
- Cmd+K fires in input context intentionally — search is a global action with highest priority (Spotlight parity)
- `focusedIndex` resets to 0 on every results change to prevent stale selection after query changes

## Deviations from Plan

None — plan executed exactly as written.

## Issues Encountered

None.

## User Setup Required

None — no external service configuration required.

## Next Phase Readiness
- Phase 5 is now fully complete: server fan-out search (Plan 01) + Cmd+K overlay UI (Plan 02) are both shipped
- All five phases of the PortOS milestone are complete
- Future search enhancements (semantic search, recent queries, filter by source) can be layered onto the existing `/api/search` route and `CmdKSearch.jsx` component

---
*Phase: 05-unified-search*
*Completed: 2026-02-27*

## Self-Check: PASSED
- FOUND: .planning/phases/05-unified-search/05-02-SUMMARY.md
- FOUND: commit 8cdbee1 (Task 1: Cmd+K hook and overlay component)
- FOUND: commit 22484ed (Task 2: Mount CmdKSearch in Layout.jsx)
