Add header quick links with CRUD management and icon enhancements

- Add LinkConfig model and links field to settings
- Add CRUD API endpoints for links (list/create/update/delete)
- Add Links management tab in WebUI with add/edit/delete dialogs
- Add live icon preview in Link and Script dialog forms
- Show MDI icons inline in Quick Actions cards, Scripts table, Links table
- Add broadcast_links_changed WebSocket event for live updates
- Add EN/RU translations for all links management strings

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

media_server/routes/links.py

@@ -0,0 +1,185 @@
+"""Header quick links management API endpoints."""
+
+import logging
+import re
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from pydantic import BaseModel, Field
+
+from ..auth import verify_token
+from ..config import LinkConfig, settings
+from ..config_manager import config_manager
+from ..services.websocket_manager import ws_manager
+
+router = APIRouter(prefix="/api/links", tags=["links"])
+logger = logging.getLogger(__name__)
+
+
+class LinkInfo(BaseModel):
+    """Information about a configured link."""
+
+    name: str
+    url: str
+    icon: str
+    label: str
+
+
+class LinkCreateRequest(BaseModel):
+    """Request model for creating or updating a link."""
+
+    url: str = Field(..., description="URL to open", min_length=1)
+    icon: str = Field(default="mdi:link", description="MDI icon name (e.g., 'mdi:led-strip-variant')")
+    label: str = Field(default="", description="Tooltip text")
+
+
+def _validate_link_name(name: str) -> None:
+    """Validate link name.
+
+    Args:
+        name: Link name to validate.
+
+    Raises:
+        HTTPException: If name is invalid.
+    """
+    if not re.match(r'^[a-zA-Z0-9_]+$', name):
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Link name must contain only letters, numbers, and underscores",
+        )
+    if len(name) > 64:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Link name must be 64 characters or less",
+        )
+
+
+@router.get("/list")
+async def list_links(_: str = Depends(verify_token)) -> list[LinkInfo]:
+    """List all configured links.
+
+    Returns:
+        List of configured links.
+    """
+    return [
+        LinkInfo(
+            name=name,
+            url=config.url,
+            icon=config.icon,
+            label=config.label,
+        )
+        for name, config in settings.links.items()
+    ]
+
+
+@router.post("/create/{link_name}")
+async def create_link(
+    link_name: str,
+    request: LinkCreateRequest,
+    _: str = Depends(verify_token),
+) -> dict[str, Any]:
+    """Create a new link.
+
+    Args:
+        link_name: Link name (alphanumeric and underscores only).
+        request: Link configuration.
+
+    Returns:
+        Success response with link name.
+    """
+    _validate_link_name(link_name)
+
+    if link_name in settings.links:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"Link '{link_name}' already exists. Use PUT /api/links/update/{link_name} to update it.",
+        )
+
+    link_config = LinkConfig(**request.model_dump())
+
+    try:
+        config_manager.add_link(link_name, link_config)
+    except Exception as e:
+        logger.error(f"Failed to add link '{link_name}': {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to add link: {str(e)}",
+        )
+
+    await ws_manager.broadcast_links_changed()
+    logger.info(f"Link '{link_name}' created successfully")
+    return {"success": True, "link": link_name}
+
+
+@router.put("/update/{link_name}")
+async def update_link(
+    link_name: str,
+    request: LinkCreateRequest,
+    _: str = Depends(verify_token),
+) -> dict[str, Any]:
+    """Update an existing link.
+
+    Args:
+        link_name: Link name.
+        request: Updated link configuration.
+
+    Returns:
+        Success response with link name.
+    """
+    _validate_link_name(link_name)
+
+    if link_name not in settings.links:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Link '{link_name}' not found. Use POST /api/links/create/{link_name} to create it.",
+        )
+
+    link_config = LinkConfig(**request.model_dump())
+
+    try:
+        config_manager.update_link(link_name, link_config)
+    except Exception as e:
+        logger.error(f"Failed to update link '{link_name}': {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to update link: {str(e)}",
+        )
+
+    await ws_manager.broadcast_links_changed()
+    logger.info(f"Link '{link_name}' updated successfully")
+    return {"success": True, "link": link_name}
+
+
+@router.delete("/delete/{link_name}")
+async def delete_link(
+    link_name: str,
+    _: str = Depends(verify_token),
+) -> dict[str, Any]:
+    """Delete a link.
+
+    Args:
+        link_name: Link name.
+
+    Returns:
+        Success response with link name.
+    """
+    _validate_link_name(link_name)
+
+    if link_name not in settings.links:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Link '{link_name}' not found",
+        )
+
+    try:
+        config_manager.delete_link(link_name)
+    except Exception as e:
+        logger.error(f"Failed to delete link '{link_name}': {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to delete link: {str(e)}",
+        )
+
+    await ws_manager.broadcast_links_changed()
+    logger.info(f"Link '{link_name}' deleted successfully")
+    return {"success": True, "link": link_name}