BIG PYTHON REFACTOR

Python scripts moved out of python/ folder to root to be unified with plugins

+ frontend extension around api calls

python/api/message_queue_add.py

@@ -1,24 +0,0 @@
-from python.helpers.api import ApiHandler, Request, Response
-from python.helpers import message_queue as mq
-from agent import AgentContext
-from python.helpers.state_monitor_integration import mark_dirty_for_context
-
-
-class MessageQueueAdd(ApiHandler):
-    """Add a message to the queue."""
-
-    async def process(self, input: dict, request: Request) -> dict | Response:
-        context = AgentContext.get(input.get("context", ""))
-        if not context:
-            return Response("Context not found", status=404)
-
-        text = input.get("text", "").strip()
-        attachments = input.get("attachments", [])  # filenames from /upload API
-        item_id = input.get("item_id")
-
-        if not text and not attachments:
-            return Response("Empty message", status=400)
-
-        item = mq.add(context, text, attachments, item_id)
-        mark_dirty_for_context(context.id, reason="message_queue_add")
-        return {"ok": True, "item_id": item["id"], "queue_length": len(mq.get_queue(context))}