fix: refine terminal preflight check to avoid false-positive PATH blocks on server

gitea_mcp_server.py

@@ -9457,6 +9457,13 @@ def gitea_resolve_task_capability(
             resolved_cwd = os.environ.get("GITEA_ACTIVE_WORKTREE") or PROJECT_ROOT
             probe_res = native_mcp_preference.probe_terminal_spawn(resolved_cwd)
             if not probe_res["healthy"]:
+                # Only block if the failure is due to a missing CWD, missing shell, or the circuit breaker is tripped.
+                # Other failures (like missing executable in the MCP process's limited PATH) should not block the agent's shell capability.
+                is_real_blocker = (
+                    probe_res.get("error_type") in ("missing cwd", "missing shell")
+                    or native_mcp_preference.shell_health_status().get("hard_stopped")
+                )
+                if is_real_blocker:
                     profile = get_profile()
                     h = host or (REMOTES.get(remote, {}).get("host") if remote in REMOTES else None)
                     username = _authenticated_username(h) if h else None