1fd5e55db7
fix(agent): auto-fallback to free port on GRADIO_SERVER_PORT conflict
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The Gradio agent (run.py) crashed with OSError when port 7860 was
already occupied by a previous instance. Added _find_free_port() that
scans up to 100 ports from the configured GRADIO_SERVER_PORT and picks
the first available one, logging a warning on fallback.
Contract updates:
- AgentChat.Run: [C:3] [TYPE Module] (was C2/Function), added
@RATIONALE, @REJECTED, @SIDE_EFFECT for port-finding logic
- AgentChat.GradioApp: added @RATIONALE, @REJECTED
- AgentChat.LangGraph.Setup: added @REJECTED, deduplicated @RELATION
- AgentChat.Tools: added @RATIONALE
2026-06-10 16:37:02 +03:00
f87ebf5d4b
feat(agent): Gradio-powered LangGraph agent chat with streaming, tool calls, file upload, conversation persistence
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- Gradio 5.50.0 ChatInterface with type='messages' streaming
- LangGraph create_react_agent with InMemorySaver checkpointer
- 4 @tool functions: search_dashboards, get_health_summary, list_environments, get_task_status
- Structured ChatMessage metadata (7 discriminator types: stream_token, tool_start/end/error, confirm_required, confirm_resolved, error)
- HITL resume via second submit() with interrupt_before/Command
- Dual-identity RBAC: service JWT + user JWT for tool calls
- File upload (10 MB limit, pdfplumber/xlsx/JSON parser)
- Conversation persistence via POST /api/agent/conversations/save
- REST API: list, history, archive conversations; multi-tab gate; LLM config
- LLM provider selection via Admin -> LLM Settings (assistant_planner_provider)
- Svelte 5 AgentChatModel with stream event queue, dedup, stream_status watcher
- MarkdownRenderer using svelte-markdown with semantic Tailwind tokens
- ToolCallCard (3 states: executing/completed/failed)
- ConversationList with search, date grouping, infinite scroll
- ConnectionIndicator with Gradio health status
- /agent route with two-column layout
- Vite proxy /api/agent/gradio -> Gradio SSE
- Fixed: not_() SQLAlchemy operator, route collision with _admin_routes
- Fixed: conversation_id -> id normalization, .pyc cache staleness
- Fixed: event.data array parsing (Gradio returns [jsonStr, null])
- Requirements pinned: gradio==5.50.0, pydantic>=2.7,<=2.12.3
2026-06-10 10:27:19 +03:00
