feat: pool handlers + aiohttp routes

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

gates/routes.py

@@ -1 +1,51 @@
-# gates/routes.py — stub (filled in Task 10)
+"""aiohttp routes for the Image Pool node. Imported only inside ComfyUI."""
+import json
+from aiohttp import web
+from server import PromptServer
+from . import handlers
+from .gates_compat import grid_pool_base
+
+routes = PromptServer.instance.routes
+
+
+def _base():
+    return grid_pool_base()
+
+
+@routes.post("/grid_pool/add")
+async def _add(request):
+    reader = await request.multipart()
+    pool_id, ts, data = "default", 0, None
+    async for part in reader:
+        if part.name == "pool_id":
+            pool_id = (await part.text())
+        elif part.name == "ts":
+            ts = int(await part.text())
+        elif part.name == "image":
+            data = await part.read(decode=False)
+    m = handlers.handle_add(_base(), pool_id, data, "png", ts=ts)
+    return web.json_response(m)
+
+
+@routes.post("/grid_pool/remove")
+async def _remove(request):
+    body = await request.json()
+    return web.json_response(handlers.handle_remove(_base(), body["pool_id"], int(body["index"])))
+
+
+@routes.post("/grid_pool/active")
+async def _active(request):
+    body = await request.json()
+    return web.json_response(handlers.handle_active(_base(), body["pool_id"], int(body["index"])))
+
+
+@routes.post("/grid_pool/label")
+async def _label(request):
+    body = await request.json()
+    return web.json_response(handlers.handle_label(_base(), body["pool_id"], int(body["index"]), body["label"]))
+
+
+@routes.get("/grid_pool/list")
+async def _list(request):
+    pool_id = request.query.get("pool_id", "default")
+    return web.json_response(handlers.handle_list(_base(), pool_id))