feat(lea): bulle paused_need_help interactive — asset démo majeur

Quand Léa bascule en pause supervisée (event 'lea:paused'), affichage d'une
bulle dédiée dans ChatWindow avec encadré orangé, raison de la pause, et deux
boutons Continuer/Annuler. C'est le moment qui incarne la différence RPA classique
vs Léa devant Carvella : Léa SAIT qu'elle ne sait pas et demande de l'aide.

Architecture (canal SocketIO bidirectionnel, pas de nouvel endpoint streaming) :

  ChatWindow ──[lea:replay_resume]──> agent_chat ──POST /resume──> streaming
  ChatWindow ──[lea:replay_abort ]──> agent_chat (running=False local)

Composants ajoutés :
- agent_chat/app.py : handlers 'lea:replay_resume' / 'lea:replay_abort' +
  acks 'lea:resume_acked' / 'lea:abort_acked' pour feedback côté client
- network/feedback_bus.py : méthodes resume_replay() / abort_replay() avec
  helper _safe_emit (silencieux + retourne bool succès)
- ui/chat_window.py : palette PAUSED_*, _add_paused_bubble(),
  _render_paused_bubble(), _close_active_paused_bubble() (auto-fermeture
  sur lea:resumed/done), _on_paused_resume/abort

8 nouveaux tests pytest (4 handlers serveur + 4 méthodes client).
Total branche : 29/29 verts.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

agent_v0/agent_v1/network/feedback_bus.py

@@ -122,3 +122,28 @@ class FeedbackBusClient:
     @property
     def connected(self) -> bool:
         return bool(self._sio.connected)
+
+    # ------------------------------------------------------------------
+    # Actions utilisateur depuis la bulle paused_need_help (J3.5)
+    # ------------------------------------------------------------------
+
+    def resume_replay(self, replay_id: str) -> bool:
+        """Bouton Continuer : émet 'lea:replay_resume' vers agent_chat.
+
+        Retourne True si l'event a pu être émis, False sinon (déconnecté/erreur).
+        """
+        return self._safe_emit("lea:replay_resume", {"replay_id": replay_id})
+
+    def abort_replay(self, replay_id: str) -> bool:
+        """Bouton Annuler : émet 'lea:replay_abort' vers agent_chat."""
+        return self._safe_emit("lea:replay_abort", {"replay_id": replay_id})
+
+    def _safe_emit(self, event: str, payload: dict) -> bool:
+        try:
+            if not self._sio.connected:
+                return False
+            self._sio.emit(event, payload)
+            return True
+        except Exception:
+            logger.debug("FeedbackBus _safe_emit silenced", exc_info=True)
+            return False

agent_v0/agent_v1/ui/chat_window.py

@@ -51,6 +51,15 @@ SCROLLBAR_BG = "#E5E7EB"     # Fond scrollbar
 SCROLLBAR_FG = "#9CA3AF"     # Curseur scrollbar
 MSG_BORDER_COLOR = "#D1D5DB"  # Bordure subtile des bulles de messages
 
+# Bulle paused_need_help (J3.5) — alerte non bloquante, asset démo majeur
+PAUSED_BG = "#FEF3C7"             # Jaune pâle
+PAUSED_BORDER = "#F59E0B"         # Orange ambré
+PAUSED_FG = "#92400E"             # Brun foncé (lisible sur fond jaune)
+PAUSED_BTN_RESUME_BG = "#22C55E"  # Vert
+PAUSED_BTN_RESUME_HOVER = "#16A34A"
+PAUSED_BTN_ABORT_BG = "#9CA3AF"   # Gris neutre (pas dramatique)
+PAUSED_BTN_ABORT_HOVER = "#6B7280"
+
 # Dimensions — confortables
 WIN_WIDTH = 600
 WIN_HEIGHT = 800
@@ -101,6 +110,7 @@ class ChatWindow:
         self._ready = threading.Event()
         self._messages = []  # historique local
         self._bus: Optional[Any] = None  # FeedbackBusClient (J3.3, peut rester None)
+        self._active_paused_bubble: Optional[Dict[str, Any]] = None  # bulle paused active (J3.5)
 
         # S'abonner aux changements de l'etat partage
         if self._shared_state is not None:
@@ -660,6 +670,15 @@ class ChatWindow:
 
     def _on_lea_event(self, event: str, payload: Dict[str, Any]) -> None:
         """Callback bus → bulle Lea. Thread-safe : _add_lea_message utilise root.after."""
+        # J3.5 : la pause supervisée a sa propre bulle interactive
+        if event == "lea:paused":
+            self._add_paused_bubble(payload or {})
+            return
+        if event in ("lea:resumed", "lea:done"):
+            self._close_active_paused_bubble(reason=event)
+            # ne pas return — on affiche aussi la bulle plate ci-dessous
+
+        # J3.3 : formatage minimal (J3.4 affinera avec le vocabulaire métier validé Amina)
         short = event.removeprefix("lea:") if event.startswith("lea:") else event
         parts = []
         for key in ("workflow", "step", "reason", "message", "failed_action"):
@@ -669,6 +688,129 @@ class ChatWindow:
         suffix = " — " + ", ".join(parts) if parts else ""
         self._add_lea_message(f"[{short}]{suffix}")
 
+    # ------------------------------------------------------------------
+    # Bulle paused_need_help interactive (J3.5)
+    # ------------------------------------------------------------------
+
+    def _add_paused_bubble(self, payload: Dict[str, Any]) -> None:
+        """Ajouter une bulle paused interactive (asset démo : Léa demande de l'aide)."""
+        if self._root is None:
+            return
+        self._root.after(0, lambda: self._render_paused_bubble(payload))
+
+    def _render_paused_bubble(self, payload: Dict[str, Any]) -> None:
+        tk = self._tk
+        if getattr(self, "_msg_frame", None) is None:
+            return
+
+        replay_id = str(payload.get("replay_id", "") or "")
+        workflow = payload.get("workflow", "?")
+        reason = payload.get("reason") or "Action incertaine — j'ai besoin de votre validation."
+        completed = payload.get("completed", 0)
+        total = payload.get("total", "?")
+        now = datetime.now().strftime("%H:%M")
+
+        container = tk.Frame(self._msg_frame, bg=BG_COLOR)
+        container.pack(fill=tk.X, padx=MARGIN, pady=6)
+
+        inner = tk.Frame(
+            container, bg=PAUSED_BG, padx=14, pady=12,
+            highlightbackground=PAUSED_BORDER, highlightthickness=2,
+        )
+        inner.pack(anchor=tk.W, padx=(0, 50), fill=tk.X)
+
+        tk.Label(
+            inner, text=f"⏸  Pause supervisée • {now}",
+            bg=PAUSED_BG, fg=PAUSED_FG,
+            font=("Segoe UI", 12, "bold"), anchor="w",
+        ).pack(fill=tk.X, anchor=tk.W)
+
+        tk.Label(
+            inner, text=reason, bg=PAUSED_BG, fg=PAUSED_FG,
+            font=FONT_MSG, wraplength=MSG_WRAP_WIDTH - 30,
+            anchor="w", justify=tk.LEFT,
+        ).pack(fill=tk.X, anchor=tk.W, pady=(6, 0))
+
+        tk.Label(
+            inner, text=f"{workflow} — étape {completed}/{total}",
+            bg=PAUSED_BG, fg=TIMESTAMP_FG, font=FONT_TIMESTAMP, anchor="w",
+        ).pack(fill=tk.X, anchor=tk.W, pady=(4, 8))
+
+        btn_frame = tk.Frame(inner, bg=PAUSED_BG)
+        btn_frame.pack(fill=tk.X, anchor=tk.W)
+
+        btn_resume = tk.Button(
+            btn_frame, text="Continuer",
+            bg=PAUSED_BTN_RESUME_BG, fg="white", font=FONT_QUICK_BTN,
+            padx=14, pady=4, bd=0, cursor="hand2",
+            activebackground=PAUSED_BTN_RESUME_HOVER, activeforeground="white",
+            command=lambda: self._on_paused_resume(replay_id),
+        )
+        btn_resume.pack(side=tk.LEFT, padx=(0, 8))
+
+        btn_abort = tk.Button(
+            btn_frame, text="Annuler",
+            bg=PAUSED_BTN_ABORT_BG, fg="white", font=FONT_QUICK_BTN,
+            padx=14, pady=4, bd=0, cursor="hand2",
+            activebackground=PAUSED_BTN_ABORT_HOVER, activeforeground="white",
+            command=lambda: self._on_paused_abort(replay_id),
+        )
+        btn_abort.pack(side=tk.LEFT)
+
+        self._active_paused_bubble = {
+            "container": container, "inner": inner,
+            "btn_resume": btn_resume, "btn_abort": btn_abort,
+            "replay_id": replay_id,
+        }
+
+    def _close_active_paused_bubble(self, reason: str) -> None:
+        if self._active_paused_bubble is None or self._root is None:
+            return
+        self._root.after(0, lambda: self._do_close_paused_bubble(reason))
+
+    def _do_close_paused_bubble(self, reason: str) -> None:
+        bubble = self._active_paused_bubble
+        if bubble is None:
+            return
+        try:
+            bubble["btn_resume"].config(state="disabled")
+            bubble["btn_abort"].config(state="disabled")
+            label_text = {
+                "lea:resumed": "→ Reprise",
+                "lea:done": "→ Terminé",
+            }.get(reason, f"→ {reason}")
+            self._tk.Label(
+                bubble["inner"], text=label_text,
+                bg=PAUSED_BG, fg=PAUSED_FG, font=FONT_TIMESTAMP, anchor="w",
+            ).pack(fill="x", anchor="w", pady=(6, 0))
+        except Exception:
+            logger.debug("close paused bubble silenced", exc_info=True)
+        self._active_paused_bubble = None
+
+    def _on_paused_resume(self, replay_id: str) -> None:
+        if not replay_id or self._bus is None or not self._bus.connected:
+            self._add_lea_message("⚠ Bus indisponible — impossible de relancer")
+            return
+        self._bus.resume_replay(replay_id)
+        if self._active_paused_bubble:
+            try:
+                self._active_paused_bubble["btn_resume"].config(state="disabled")
+                self._active_paused_bubble["btn_abort"].config(state="disabled")
+            except Exception:
+                pass
+
+    def _on_paused_abort(self, replay_id: str) -> None:
+        if self._bus is None or not self._bus.connected:
+            self._add_lea_message("⚠ Bus indisponible — impossible d'annuler")
+            return
+        self._bus.abort_replay(replay_id)
+        if self._active_paused_bubble:
+            try:
+                self._active_paused_bubble["btn_resume"].config(state="disabled")
+                self._active_paused_bubble["btn_abort"].config(state="disabled")
+            except Exception:
+                pass
+
     # ======================================================================
     # Ajout de messages dans la zone de chat
     # ======================================================================