docs(audit): README honnête + STATUS + DEV_SETUP + cleanup build

- README.md : bandeau POC, date 14 avril 2026, retrait claims
  "production-ready 77%" (alignement code/doc post-audit)
- docs/STATUS.md : état réel par module (opérationnel/alpha/en cours)
- docs/DEV_SETUP.md : gestion worktrees Claude
- QUICK_START.md : gemma4:latest au lieu de qwen3-vl:8b
- deploy/build_package.sh : +9 fichiers dans REQUIRED_FILES
  (system_dialog_guard.py, persistent_buffer.py, grounding.py, etc.)
- agent_v0/deploy_windows.py : marqué OBSOLÈTE (legacy)
- .gitignore : ajout data/, .hypothesis, .deps_installed, buffer/,
  instance/*.db, caches SQLite

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

deploy/build_package.sh

@@ -146,8 +146,14 @@ REQUIRED_FILES=(
     "agent_v1/core/__init__.py"
     "agent_v1/core/captor.py"
     "agent_v1/core/executor.py"
+    "agent_v1/core/grounding.py"
+    "agent_v1/core/policy.py"
+    "agent_v1/core/recovery.py"
+    "agent_v1/core/system_dialog_guard.py"
+    "agent_v1/core/uia_helper.py"
     "agent_v1/network/__init__.py"
     "agent_v1/network/streamer.py"
+    "agent_v1/network/persistent_buffer.py"
     "agent_v1/session/__init__.py"
     "agent_v1/session/storage.py"
     "agent_v1/ui/__init__.py"
@@ -156,6 +162,8 @@ REQUIRED_FILES=(
     "agent_v1/ui/chat_window.py"
     "agent_v1/ui/capture_server.py"
     "agent_v1/ui/notifications.py"
+    "agent_v1/ui/activity_panel.py"
+    "agent_v1/ui/messages.py"
     "agent_v1/vision/__init__.py"
     "agent_v1/vision/capturer.py"
     "agent_v1/vision/blur_sensitive.py"