update addons (for 5.2)

extensions/lab_blender_org/mcp/execute_interactive.py

@@ -0,0 +1,48 @@
+# SPDX-FileCopyrightText: 2026 Blender Authors
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+"""
+Interactive timer-based execution for the MCP server.
+
+Polls client connections via ``bpy.app.timers`` so that requests are
+handled in Blender's main loop during normal interactive sessions.
+"""
+
+__all__ = (
+    "run",
+)
+
+from . import mcp_to_blender_server
+
+
+def run() -> float | None:
+    """
+    Timer callback: poll connections, return next interval.
+
+    Returns ``None`` when the server is no longer running, which causes
+    ``bpy.app.timers`` to unregister this callback.
+    """
+    # While errors *should* never happen: without exception handling here,
+    # any error would remove the timer - effectively breaking the add-on.
+    try:
+        did_work = mcp_to_blender_server.poll()
+    except Exception:  # pylint: disable=broad-exception-caught
+        import traceback
+        import sys
+        print(
+            "Error: unhandled exception in the MCP server timer.\n"
+            "This may be a bug in Blender-MCP, as errors should not be raised at this point, continuing:\n"
+            "{:s}".format(traceback.format_exc()),
+            file=sys.stderr,
+        )
+        # This is undefined, set to true so we reset the timer.
+        did_work = True
+
+    if not mcp_to_blender_server.is_running():
+        return None
+
+    if did_work:
+        mcp_to_blender_server.timer_idle_reset()
+
+    return mcp_to_blender_server.timer_idle_interval()