CB-565: remove unsafe session recycle

bridged/src/main/java/dev/ltms/bridged/session/SessionManager.java

@@ -29,8 +29,7 @@ import java.util.function.LongSupplier;
  * teardown on top.
  *
  * <p>The state machine is intentionally one-shot / no-reuse: every acquired worker is fresh,
- * and a finished or released worker is torn down, never pooled. {@link #recycle} is a convenience
- * for {@code release + acquire} with a new distinct pane id.
+ * and a finished or released worker is torn down, never pooled or reused.
  *
  * <p>The manager implements {@link TurnListener} so the injector's turn boundaries drive
  * {@code READY → BUSY → DONE} (or {@code FAILED}). It exposes a {@link MemberPresence} view via
@@ -180,7 +179,7 @@ public final class SessionManager implements TurnListener {
      * <p>CB-544: these are two concerns that used to be fused. Stopping the pane is correct on every
      * teardown — the worker process must end. Removing the worktree is a destructive act that is only
      * correct for a deliberately-finished teardown (an explicit stop of a completed session, the
-     * reaper releasing a genuinely idle one, a context-capped or recycled session). A shutdown drain
+     * reaper releasing a genuinely idle one, or a context-capped session). A shutdown drain
      * must stop panes but preserve worktrees: a worker's uncommitted work exists in exactly one
      * place — its worktree — so deleting it while the daemon simply goes down is silent data loss,
      * with no copy and no error. Do NOT fuse these back together; the cost of an orphaned worktree
@@ -248,7 +247,7 @@ public final class SessionManager implements TurnListener {
     /**
      * Register a callback invoked with a session's {@code terminalId} whenever it is released
      * (CB-516). Every teardown path funnels through {@link #release}, so one hook covers the REST
-     * and MCP stop tools, the idle-TTL reaper, {@code recycle}, and shutdown drain alike.
+     * and MCP stop tools, the idle-TTL reaper, and shutdown drain alike.
      *
      * <p>Added rather than injected because {@code MessageService} — one intended listener — is
      * constructed after this manager (it needs the injector and rendezvous, which need the session
@@ -370,19 +369,6 @@ public final class SessionManager implements TurnListener {
         return launcher.defaultProfile();
     }
 
-    /**
-     * Release the old session and acquire a fresh one with the same profile and working directory.
-     * The new session is guaranteed to have a pane id distinct from the old one (no-reuse invariant).
-     */
-    public MemberSession recycle(String paneId) {
-        MemberSession old = registry.get(paneId);
-        if (old == null) {
-            throw new IllegalArgumentException("no session for paneId " + paneId);
-        }
-        release(paneId);
-        return acquire(old.profile(), old.cwd(), old.cwd(), old.ownerTerminal());
-    }
-
     /** The session for {@code paneId}, if it is still registered and not released. */
     public Optional<MemberSession> get(String paneId) {
         return Optional.ofNullable(registry.get(paneId));