feat: Add presence heartbeat for Matrix online status

- matrix-gateway: POST /internal/matrix/presence/online endpoint
- usePresenceHeartbeat hook with activity tracking
- Auto away after 5 min inactivity
- Offline on page close/visibility change
- Integrated in MatrixChatRoom component

services/toolcore/models.py

@@ -0,0 +1,32 @@
+from pydantic import BaseModel, Field
+from typing import Literal, Optional, Dict, Any
+
+class ToolDefinition(BaseModel):
+    id: str = Field(..., description="Unique tool ID, e.g., 'projects.list'")
+    name: str = Field(..., description="Human-readable tool name")
+    description: str = Field(..., description="What this tool does")
+    input_schema: Dict[str, Any] = Field(..., description="JSON Schema for input")
+    output_schema: Dict[str, Any] = Field(..., description="JSON Schema for output")
+    executor: Literal["http", "python"] = Field("http", description="Execution method")
+    target: str = Field(..., description="HTTP URL or Python path")
+    allowed_agents: Optional[list[str]] = Field(None, description="Allowlist of agent IDs. None = all agents")
+    timeout: int = Field(30, ge=1, le=300, description="Timeout in seconds")
+    enabled: bool = Field(True, description="Whether tool is enabled")
+
+class ToolCallRequest(BaseModel):
+    tool_id: str = Field(..., description="Tool ID to call")
+    agent_id: str = Field(..., description="Agent making the call")
+    microdao_id: str = Field(..., description="MicroDAO context")
+    args: Dict[str, Any] = Field(default_factory=dict, description="Tool arguments")
+    context: Optional[Dict[str, Any]] = Field(default_factory=dict, description="Additional context")
+
+class ToolCallResult(BaseModel):
+    ok: bool
+    result: Optional[Dict[str, Any]] = None
+    error: Optional[str] = None
+    tool_id: str
+    latency_ms: Optional[float] = None
+
+
+
+