fix: shows live sessions for pty view

src/claude_code_api/backend.py

@@ -136,6 +136,7 @@ class ClaudeCodeBackend:
         self._opts = options
         self._on_parse_error = on_parse_error
         self._sessions: dict[str, _LiveSession] = {}
+        self._active: dict[str, _LiveSession] = {}
         self._mcp_config_path: Path | None = None
         self._session_factory = _session_factory
         self._closed = False
@@ -158,8 +159,15 @@ class ClaudeCodeBackend:
         ``_sessions`` (which is keyed by history fingerprint, not
         ``session_id``). Intended for debug surfaces (e.g. admin
         terminal viewer) that need to look up a session by id.
+
+        Covers both idle pooled sessions (``_sessions``) and the turn(s)
+        currently running (``_active``) — so a live terminal is visible
+        *during* its turn, not only after it's repooled. ``_active`` wins
+        on key collision, but a session is never in both at once.
         """
-        return {s.session_id: s.pty for s in self._sessions.values()}
+        out = {s.session_id: s.pty for s in self._sessions.values()}
+        out.update({sid: s.pty for sid, s in self._active.items()})
+        return out
 
     async def complete(self, messages: list[Mapping[str, Any]]) -> AsyncIterator[Event]:
         """Run one turn against the matching session (or spawn one).
@@ -223,6 +231,7 @@ class ClaudeCodeBackend:
             n_assistant = 0
             n_user = 0
             n_system = 0
+            self._active[session.session_id] = session
             try:
                 _log.info(
                     "complete: sending user msg to session_id=%s (text_len=%d)",
@@ -250,6 +259,8 @@ class ClaudeCodeBackend:
                 with contextlib.suppress(Exception):
                     await session.aclose()
                 raise
+            finally:
+                self._active.pop(session.session_id, None)
 
             synthesized_cycle = synthesize_turn_messages(events)
             new_history = [*list(messages), *synthesized_cycle]