docs(03-01): complete hook event processing plan

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.planning/REQUIREMENTS.md

@@ -18,7 +18,7 @@ Requirements for initial release. Each maps to roadmap phases.
 
 - [ ] **STATE-01**: vmux détecte l'état de chaque session : travaille / attend input / idle
 - [ ] **STATE-02**: vmux affiche un aperçu des dernières lignes de sortie de chaque session
-- [ ] **STATE-03**: vmux distingue le type d'attente (permission prompt, question utilisateur, idle prompt)
+- [x] **STATE-03**: vmux distingue le type d'attente (permission prompt, question utilisateur, idle prompt)
 - [x] **STATE-04**: vmux affiche le temps écoulé depuis que la session attend ("depuis 3 min")
 
 ### i3 Integration
@@ -72,7 +72,7 @@ Which phases cover which requirements. Updated during roadmap creation.
 | DISC-04 | Phase 2 | Complete |
 | STATE-01 | Phase 1 | Pending |
 | STATE-02 | Phase 1 | Pending |
-| STATE-03 | Phase 3 | Pending |
+| STATE-03 | Phase 3 | Complete |
 | STATE-04 | Phase 2 | Complete |
 | I3-01 | Phase 2 | Complete |
 | I3-02 | Phase 2 | Complete |

.planning/ROADMAP.md

@@ -61,7 +61,7 @@ Plans:
 **Plans**: 2 plans
 
 Plans:
-- [ ] 03-01-PLAN.md — HookEvent types, processHookEvent mapping, HTTP handler, WaitType dans SessionInfo
+- [x] 03-01-PLAN.md — HookEvent types, processHookEvent mapping, HTTP handler, WaitType dans SessionInfo
 - [ ] 03-02-PLAN.md — Hook server integre au daemon, poll dynamique, affichage WaitType
 
 ### Phase 4: Notifications et i3bar

.planning/STATE.md

@@ -2,14 +2,14 @@
 gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
-status: Ready to plan
+status: Ready to execute
-stopped_at: Phase 3 context gathered
+stopped_at: Completed 03-01-PLAN.md
-last_updated: "2026-03-23T18:24:41.510Z"
+last_updated: "2026-03-23T18:42:29.103Z"
 progress:
   total_phases: 4
   completed_phases: 2
-  total_plans: 5
+  total_plans: 7
-  completed_plans: 5
+  completed_plans: 6
 ---
 
 # Project State
@@ -19,12 +19,12 @@ progress:
 See: .planning/PROJECT.md (updated 2026-03-23)
 
 **Core value:** Savoir instantanement quelle session Claude Code a besoin de moi, sans scanner manuellement mes workspaces.
-**Current focus:** Phase 02 — daemon-et-i3-bridge
+**Current focus:** Phase 03 — hook-server
 
 ## Current Position
 
-Phase: 3
+Phase: 03 (hook-server) — EXECUTING
-Plan: Not started
+Plan: 2 of 2
 
 ## Performance Metrics
 
@@ -50,6 +50,7 @@ Plan: Not started
 | Phase 01 P02 | 4min | 2 tasks | 8 files |
 | Phase 02 P01 | 5min | 2 tasks | 5 files |
 | Phase 02 P02 | 4min | 2 tasks | 7 files |
+| Phase 03 P01 | 3min | 2 tasks | 4 files |
 
 ## Accumulated Context
 
@@ -67,6 +68,8 @@ Recent decisions affecting current work:
 - [Phase 02]: X11PIDResolver interface pour abstraire ewmh et tester sans X11
 - [Phase 02]: maxPPIDDepth=20 pour securiser la remontee de chaine PPID
 - [Phase 02]: Priorite fuzzy match : label > branche > cwd
+- [Phase 03]: UpdateFromHook separe de Update: hooks ne connaissent pas PID/GitBranch/Preview
+- [Phase 03]: WaitType omitempty pour compatibilite clients existants
 
 ### Pending Todos
 
@@ -78,6 +81,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-23T18:24:41.507Z
+Last session: 2026-03-23T18:42:29.101Z
-Stopped at: Phase 3 context gathered
+Stopped at: Completed 03-01-PLAN.md
-Resume file: .planning/phases/03-hook-server/03-CONTEXT.md
+Resume file: None

.planning/phases/03-hook-server/03-01-SUMMARY.md

@@ -0,0 +1,92 @@
+---
+phase: 03-hook-server
+plan: 01
+subsystem: api
+tags: [http-hooks, claude-code, json, net-http, event-mapping]
+
+requires:
+  - phase: 02-daemon-et-i3-bridge
+    provides: SessionRegistry, TrackedSession, Daemon, SessionInfo
+provides:
+  - HookEvent struct parsing Claude Code hook JSON
+  - processHookEvent mapping 4 event types to State+WaitType
+  - UpdateFromHook with auto-create and WaitingSince transitions
+  - handleHook HTTP handler with POST validation and body size limit
+  - SessionInfo.WaitType field for wait type discrimination
+affects: [03-hook-server]
+
+tech-stack:
+  added: [net/http, net/http/httptest]
+  patterns: [HTTP handler with MaxBytesReader, event-to-state mapping via switch]
+
+key-files:
+  created: [hook.go, hook_test.go]
+  modified: [protocol.go, protocol_test.go]
+
+key-decisions:
+  - "WaitType omitempty: champ vide omis du JSON pour compatibilite avec les clients existants"
+  - "UpdateFromHook separe de Update: les hooks ne connaissent pas PID/GitBranch/Preview, donc methode dediee qui ne touche que les champs connus"
+
+patterns-established:
+  - "Hook event mapping: switch sur HookEventName puis NotificationType pour determiner State+WaitType"
+  - "HTTP handler pattern: method check, MaxBytesReader, JSON decode, process, 200 OK"
+
+requirements-completed: [STATE-03]
+
+duration: 3min
+completed: 2026-03-23
+---
+
+# Phase 03 Plan 01: Hook Event Processing Summary
+
+**HookEvent parsing, event-to-state mapping (Notification/Stop/PostToolUse/PreToolUse), UpdateFromHook avec auto-create, et HTTP handler POST /hook avec validation**
+
+## Performance
+
+- **Duration:** 3 min
+- **Started:** 2026-03-23T18:38:37Z
+- **Completed:** 2026-03-23T18:41:45Z
+- **Tasks:** 2
+- **Files modified:** 4
+
+## Accomplishments
+- HookEvent struct couvre tous les champs du payload Claude Code hooks
+- processHookEvent mappe les 4 types d'events (Notification, Stop, PostToolUse, PreToolUse) vers State+WaitType
+- UpdateFromHook gere les sessions inconnues et les transitions WaitingSince
+- handleHook HTTP handler valide method, body size (64KB), et JSON
+- 16 tests couvrent tous les cas
+
+## Task Commits
+
+1. **Task 1: HookEvent struct, processHookEvent mapping, UpdateFromHook, WaitType** - `e1b176c` (feat)
+2. **Task 2: HTTP handler POST /hook avec validation et protection** - `5bec943` (feat)
+
+## Files Created/Modified
+- `hook.go` - HookEvent struct, handleHook HTTP handler, processHookEvent, UpdateFromHook
+- `hook_test.go` - 16 tests (12 mapping + 4 HTTP handler)
+- `protocol.go` - SessionInfo enrichi avec WaitType
+- `protocol_test.go` - Test serialisation JSON de WaitType
+
+## Decisions Made
+- WaitType omitempty : le champ vide est omis du JSON pour ne pas casser les clients existants qui ignorent ce champ
+- UpdateFromHook est une methode separee de Update car les hooks ne connaissent pas PID, GitBranch, Preview, Workspace, Label
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+None
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- hook.go fournit toute la logique de traitement. Le plan 03-02 peut integrer le HTTP server dans le Daemon (startHookServer, hookPort, poll slowdown).
+- handleHook est pret a etre monte sur un http.ServeMux.
+
+---
+*Phase: 03-hook-server*
+*Completed: 2026-03-23*
+
+## Self-Check: PASSED