fix(i-c): BUG-024 behoben — Plugin-Detail-Endpoint GET /api/v1/plugins/{name} implementiert (Manifest-Metadaten + DB-Status, 404 für unbekannte); Beweistest test_plugin_detail.py 2/2 grün; Existenzprüfung vorher: Route fehlte komplett (bewiesen), Frontend-Nutzung niedrig aber API-Vollständigkeit hergestellt

app/routes/plugins.py

@@ -5,13 +5,14 @@ from __future__ import annotations
 import logging
 from typing import Any
 
-from fastapi import APIRouter, Depends, File, HTTPException, Query, UploadFile
+from fastapi import APIRouter, Depends, File, HTTPException, Query, UploadFile, status
 from pydantic import BaseModel
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.core.db import get_db
 from app.deps import get_current_user, require_admin, require_permission
 from app.plugins.migration_runner import MigrationValidationError
+from app.plugins.registry import get_registry
 from app.services.plugin_service import get_plugin_service
 
 logger = logging.getLogger(__name__)
@@ -43,6 +44,48 @@ async def list_plugins(
     return {"plugins": plugins, "total": len(plugins)}
 
 
+@router.get("/{name}")
+async def get_plugin_detail(
+    name: str,
+    db: AsyncSession = Depends(get_db),
+    current_user: dict = Depends(require_permission("plugins:read")),
+):
+    """Get detail for a single plugin: manifest metadata + DB status.
+
+    BUG-024 fix: this endpoint was missing entirely (404).
+    """
+    registry = get_registry()
+    plugin = registry.get_plugin(name)
+    if plugin is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail={"detail": f"Plugin '{name}' not found", "code": "not_found"},
+        )
+
+    m = plugin.manifest
+    record = registry.get_db_status(name)
+    return {
+        "name": m.name,
+        "version": m.version,
+        "display_name": getattr(m, "display_name", None) or m.name,
+        "description": getattr(m, "description", None),
+        "author": getattr(m, "author", None),
+        "is_core": bool(getattr(m, "is_core", False)),
+        "permissions": list(m.permissions),
+        "depends_on": list(getattr(m, "depends_on", []) or []),
+        "status": {
+            "installed": record is not None,
+            "active": bool(record.active) if record is not None else False,
+            "version_installed": getattr(record, "version", None),
+        },
+        "menu_items": len(getattr(m, "menu_items", []) or []),
+        "page_routes": len(getattr(m, "page_routes", []) or []),
+        "detail_tabs": len(getattr(m, "detail_tabs", []) or []),
+        "settings_pages": len(getattr(m, "settings_pages", []) or []),
+        "dashboard_widgets": len(getattr(m, "dashboard_widgets", []) or []),
+    }
+
+
 @router.get("/manifest")
 async def get_manifest_schema(
     current_user: dict = Depends(require_permission("plugins:read")),