diff --git a/.planning/phases/03-hook-server/03-02-PLAN.md b/.planning/phases/03-hook-server/03-02-PLAN.md
index 2ef8db4..39aa70b 100644
--- a/.planning/phases/03-hook-server/03-02-PLAN.md
+++ b/.planning/phases/03-hook-server/03-02-PLAN.md
@@ -124,7 +124,7 @@ func DisplaySessionInfos(w io.Writer, sessions []SessionInfo, noColor bool, now
 
 <task type="auto" tdd="true">
   <name>Task 1: Hook server dans Daemon, graceful degradation, poll dynamique</name>
-  <files>daemon.go, daemon_test.go</files>
+  <files>daemon.go, daemon_test.go, hook.go</files>
   <read_first>
     - daemon.go (Daemon struct, Start, Stop, pollLoop, NewDaemon)
     - hook.go (handleHook, processHookEvent, crees par Plan 01)
diff --git a/.planning/phases/03-hook-server/03-VALIDATION.md b/.planning/phases/03-hook-server/03-VALIDATION.md
new file mode 100644
index 0000000..697b6c7
--- /dev/null
+++ b/.planning/phases/03-hook-server/03-VALIDATION.md
@@ -0,0 +1,74 @@
+---
+phase: 3
+slug: hook-server
+status: draft
+nyquist_compliant: false
+wave_0_complete: false
+created: 2026-03-23
+---
+
+# Phase 3 — Validation Strategy
+
+> Per-phase validation contract for feedback sampling during execution.
+
+---
+
+## Test Infrastructure
+
+| Property | Value |
+|----------|-------|
+| **Framework** | go test (stdlib) |
+| **Config file** | go.mod (exists) |
+| **Quick run command** | `go test ./...` |
+| **Full suite command** | `go test -v -race ./...` |
+| **Estimated runtime** | ~6 seconds |
+
+---
+
+## Sampling Rate
+
+- **After every task commit:** Run `go test ./...`
+- **After every plan wave:** Run `go test -v -race ./...`
+- **Before `/gsd:verify-work`:** Full suite must be green
+- **Max feedback latency:** 6 seconds
+
+---
+
+## Per-Task Verification Map
+
+| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
+|---------|------|------|-------------|-----------|-------------------|-------------|--------|
+| 03-01-01 | 01 | 1 | STATE-03 | unit | `go test -run TestProcessHookEvent ./...` | ❌ W0 | ⬜ pending |
+| 03-01-02 | 01 | 1 | STATE-03 | unit | `go test -run TestHandleHook ./...` | ❌ W0 | ⬜ pending |
+| 03-02-01 | 02 | 2 | STATE-03 | unit | `go test -run TestDaemonHookServer ./...` | ❌ W0 | ⬜ pending |
+| 03-02-02 | 02 | 2 | STATE-03 | unit | `go test -run TestDisplayWaitType ./...` | ❌ W0 | ⬜ pending |
+
+*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*
+
+---
+
+## Wave 0 Requirements
+
+- [ ] Test stubs for hook event processing and HTTP handler
+
+---
+
+## Manual-Only Verifications
+
+| Behavior | Requirement | Why Manual | Test Instructions |
+|----------|-------------|------------|-------------------|
+| Hook events arrive in < 1s | STATE-03 | Requires real Claude Code session sending hooks | Configure hooks in settings.json, trigger a tool use, verify vmux list updates immediately |
+| WaitType displayed correctly | STATE-03 | Requires real permission/idle prompts | Trigger permission prompt, check vmux list shows correct wait type |
+
+---
+
+## Validation Sign-Off
+
+- [ ] All tasks have `<automated>` verify or Wave 0 dependencies
+- [ ] Sampling continuity: no 3 consecutive tasks without automated verify
+- [ ] Wave 0 covers all MISSING references
+- [ ] No watch-mode flags
+- [ ] Feedback latency < 6s
+- [ ] `nyquist_compliant: true` set in frontmatter
+
+**Approval:** pending