feat(chat): MCP server + WebSocket streaming, replace XML actions

- Backend: kanban binary gana subcomando `kanban mcp` que actua como MCP
  server via stdio. Tools = mismo set que executeTool (14). El subprocess
  llama de vuelta al backend via /api/tool/{name} con token interno.
- Backend: nuevo endpoint POST /api/tool/{name} (auth: X-Internal-Token).
- Backend: chat.go refactor — POST /api/chat reemplazado por GET
  /api/chat/ws (WebSocket). Lanza claude -p con --output-format stream-json
  --verbose --mcp-config y reenvia eventos (delta/tool_use/tool_result/
  result/done/error) como mensajes JSON al cliente.
- Backend: usa funciones nuevas del registry claude_stream_go_core (spawn
  + parser NDJSON) y mcp_server_stdio_go_infra (JSON-RPC stdio).
- Frontend: streamChat sobre WebSocket. ChatPanel renderiza deltas en
  vivo, chips para tool_use, badges teal/red para tool_result.
- Borrado: extractActions, actionsBlockMarker, XML system prompt.
- Tests: 7 nuevos en backend (chat_ws_test.go + endpoint /api/tool).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-05-09 14:54:38 +02:00
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<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Kanban</title>
<script type="module" crossorigin src="/assets/index-BKxzRoLi.js"></script>
<script type="module" crossorigin src="/assets/index-CPqSy0gZ.js"></script>
<link rel="stylesheet" crossorigin href="/assets/index-nR9uJgze.css">
</head>
<body>