docs(quick-4): complete quick task 4 plan

- Add port 9999 as remote HD display mode
- Implement dual-mode default startup (8888 + 9999)
- Update all documentation with new mode and behavior

.planning/STATE.md

@@ -105,15 +105,16 @@ None - ready to begin Phase 1 planning.
 | 1 | Create start.sh script with menu for test, dev, etc. | 2026-03-13 | b474f70 | [1-create-start-sh-script-with-menu-for-tes](./quick/1-create-start-sh-script-with-menu-for-tes/) |
 | 2 | Update start.sh for network access and port configuration | 2026-03-13 | e327ab9 | [2-update-start-sh-for-network-access-and-p](./quick/2-update-start-sh-for-network-access-and-p/) |
 | 3 | Fix UI feedback: header, navigation, and layout issues | 2026-03-13 | - | [3-fix-ui-feedback-header-navigation-and-la](./quick/3-fix-ui-feedback-header-navigation-and-la/) |
+| 4 | Create Full Remote HD Web Interface at Port 9999 | 2026-03-19 | 0f281567, 3b1ece0e, 9f29b51c | [4-create-full-remote-hd-web-interface-at-p](./quick/4-create-full-remote-hd-web-interface-at-p/) |
 
 ---
 
 ## Session Continuity
 
 ### Last Session
-- **Action:** Roadmap creation
+- **Action:** Quick task 4 execution
-- **Outcome:** 3-phase roadmap created with 35/35 requirements mapped
+- **Outcome:** Port 9999 added as remote HD mode, dual-mode default startup implemented
-- **Artifacts:** ROADMAP.md, STATE.md, REQUIREMENTS.md updated
+- **Artifacts:** useDisplayMode.ts, start.sh, README.md, WIKI.md, install_everything.sh updated
 
 ### Next Expected Session
 - **Action:** `/gsd-plan-phase 1`
@@ -134,4 +135,4 @@ None - ready to begin Phase 1 planning.
 
 ---
 
-*Last updated: 2026-03-13 - Completed quick task 1: start.sh script*
+*Last updated: 2026-03-19 - Completed quick task 4: Full Remote HD Web Interface at Port 9999*

.planning/quick/4-create-full-remote-hd-web-interface-at-p/4-SUMMARY.md

@@ -0,0 +1,126 @@
+---
+phase: quick
+plan: 4
+subsystem: display-modes
+tags: [port-9999, remote-hd, dual-mode, start-script]
+dependency_graph:
+  requires: []
+  provides:
+    - port-9999-remote-hd-mode
+    - dual-mode-default-startup
+    - dev-9999-menu-option
+  affects:
+    - useDisplayMode hook
+    - start.sh
+    - README.md
+    - WIKI.md
+    - install_everything.sh
+tech_stack:
+  added: []
+  patterns:
+    - Dual-mode concurrent server startup (background processes)
+    - Port-based display mode detection
+key_files:
+  created: []
+  modified:
+    - sample_interface/src/app/hooks/useDisplayMode.ts
+    - start.sh
+    - README.md
+    - WIKI.md
+    - install_everything.sh
+decisions:
+  - "Port 9999 = Remote HD display mode (Full HD responsive for desktop)"
+  - "Port 8888 = Kiosk display mode (1024x600 fixed for touchscreen)"
+  - "Port 9090 = Legacy Remote mode (kept for compatibility)"
+  - "No arguments to start.sh = dual-mode (both 8888 + 9999)"
+  - "dev:9999 menu option for single remote HD mode"
+metrics:
+  duration: "<1 min"
+  completed: "2026-03-19"
+---
+
+# Quick Task 4: Create Full Remote HD Web Interface at Port 9999 Summary
+
+## One-liner
+
+Added port 9999 as "remote HD" display mode with dual-mode default startup (8888 kiosk + 9999 remote HD).
+
+## Completed Tasks
+
+| task | Name | Commit | Files |
+|------|------|--------|-------|
+| 1 | Update useDisplayMode hook for port 9999 | 0f281567 | useDisplayMode.ts |
+| 2 | Update start.sh for dual-mode default and dev:9999 option | 3b1ece0e | start.sh |
+| 3 | Update documentation (README.md, WIKI.md, install_everything.sh) | 9f29b51c | README.md, WIKI.md, install_everything.sh |
+
+## Changes Made
+
+### 1. useDisplayMode.ts
+- Added `remote-hd` to `DisplayMode` type: `'kiosk' | 'remote' | 'remote-hd'`
+- Updated `useDisplayMode()` to return `'remote-hd'` when port is `'9999'`
+- Updated `getDisplayMode()` to return `'remote-hd'` when port is `'9999'`
+- Port 9090 continues to return `'remote'`
+- All other ports return `'kiosk'` (default)
+
+### 2. start.sh
+- Added menu option `4) dev:9999` for remote HD mode
+- Renumbered menu options 5-11 to accommodate
+- Added `run_dual_mode()` function that:
+  - Starts kiosk server on port 8888 (background)
+  - Starts remote HD server on port 9999 (background)
+  - Shows connection info for both modes
+  - Waits for both processes
+- Modified script to call `run_dual_mode()` when run without arguments (replaced interactive menu)
+
+### 3. Documentation Updates
+
+**README.md:**
+- Updated "Essential files to run" section with dual-mode default behavior
+- Updated dual-mode display section to show port 9999 as Remote HD
+- Updated Display Modes table to include port 9999 and dual-mode note
+
+**WIKI.md:**
+- Added "Remote HD Mode (Port 9999)" section with full HD details
+- Updated Start Script Options table with dev:9999 option and dual-mode
+- Clarified port usage across modes
+
+**install_everything.sh:**
+- Added dual-mode server information to startup message
+- Shows both ports (8888 kiosk, 9999 remote HD) in success message
+
+## Verification
+
+All automated checks passed:
+- ✅ `remote-hd` type added to useDisplayMode.ts
+- ✅ Port 9999 check added to useDisplayMode.ts
+- ✅ `dev:9999` menu option exists in start.sh
+- ✅ Both ports 8888 and 9999 referenced in start.sh
+- ✅ start.sh syntax valid (bash -n passed)
+- ✅ README.md mentions port 9999
+- ✅ WIKI.md mentions port 9999
+- ✅ README.md mentions dual mode
+
+## Success Criteria Met
+
+- [x] Port 9999 is recognized as 'remote-hd' display mode in useDisplayMode hook
+- [x] `./start.sh` without arguments starts both 8888 and 9999 servers concurrently
+- [x] `./start.sh dev:9999` starts server on port 9999
+- [x] Documentation in README.md, WIKI.md, and install_everything.sh is updated with port 9999 and dual-mode info
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Commits
+
+```
+0f281567 feat(quick-4): add remote-hd display mode for port 9999
+3b1ece0e feat(quick-4): update start.sh for dual-mode and dev:9999
+9f29b51c docs(quick-4): update documentation for port 9999 and dual-mode
+```
+
+## Self-Check
+
+- [x] Files created/modified exist at specified paths
+- [x] Commit hashes verified in git log
+- [x] All verification commands passed