Implement AI orchestration wedding demo

backend/app/api/dependencies.py

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+from functools import lru_cache
+
+import httpx
+from fastapi import Request
+
+from app.ai.tool_generator import OpenAPIToolGenerator
+from app.ai.tool_registry import ToolRegistry
+from app.ai.wed_api_spec import wed_openapi_subset
+from app.application.orchestrator import Orchestrator
+from app.config import get_settings
+from app.infrastructure.events import EventPublisher
+from app.memory.context_builder import ContextBuilder
+from app.memory.memory_manager import MemoryManager
+from app.planner.llm_planner import HybridPlanner
+
+
+@lru_cache
+def context_builder() -> ContextBuilder:
+    return ContextBuilder()
+
+
+@lru_cache
+def memory_manager() -> MemoryManager:
+    manager = MemoryManager()
+    manager.seed_demo()
+    return manager
+
+
+@lru_cache
+def event_publisher() -> EventPublisher:
+    return EventPublisher()
+
+
+@lru_cache
+def wed_api_spec() -> dict:
+    settings = get_settings()
+    if settings.wed_api_openapi_url:
+        try:
+            response = httpx.get(settings.wed_api_openapi_url, timeout=5)
+            response.raise_for_status()
+            return response.json()
+        except Exception:
+            return wed_openapi_subset()
+    return wed_openapi_subset()
+
+
+def tool_registry(request: Request) -> ToolRegistry:
+    spec = wed_api_spec()
+    tools = OpenAPIToolGenerator(spec).generate()
+    filtered = [
+        tool
+        for tool in tools
+        if tool.name
+        in {
+            "create_task",
+            "update_task",
+            "create_note",
+            "update_note",
+            "create_guest_reservation",
+            "update_reservation",
+        }
+    ]
+    return ToolRegistry(filtered)
+
+
+def orchestrator(request: Request) -> Orchestrator:
+    return Orchestrator(
+        context=context_builder(),
+        memory=memory_manager(),
+        planner=HybridPlanner(),
+        registry=tool_registry(request),
+        publisher=event_publisher(),
+    )