feat: Enhance tool management and documentation in Castle

- Introduced category tools support in the `castle create` command.
- Added detailed guides for creating components in CLAUDE.md.
- Implemented new API endpoints for listing and retrieving tool details.
- Updated component and tool models to include additional metadata.
- Improved error handling and response structures in service actions.
- Enhanced documentation for component registry and web APIs.

cli/src/castle_cli/manifest.py

@@ -170,17 +170,15 @@ class InstallSpec(BaseModel):
 
 
 class ToolType(str, Enum):
-    PYTHON_UV = "python_uv"
     PYTHON_STANDALONE = "python_standalone"
     SCRIPT = "script"
 
 
 class ToolSpec(BaseModel):
-    tool_type: ToolType = ToolType.PYTHON_UV
+    tool_type: ToolType = ToolType.PYTHON_STANDALONE
     category: str | None = None
     version: str = "1.0.0"
     source: str | None = None
-    entry_point: str | None = None
     system_dependencies: list[str] = Field(default_factory=list)