Add clear-data API endpoint

- DELETE /api/clear-data clears all user L1 data
- Deletes runs, recipes, effects, and media/cache items
- Preserves storage provider configurations
- Returns counts of deleted items and any errors

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

app/routers/home.py

@@ -73,6 +73,103 @@ async def api_stats(request: Request):
     return stats
 
 
+@router.delete("/api/clear-data")
+async def clear_user_data(request: Request):
+    """
+    Clear all user L1 data except storage configuration.
+
+    Deletes: runs, recipes, effects, media/cache items.
+    Preserves: storage provider configurations.
+    """
+    import logging
+    logger = logging.getLogger(__name__)
+
+    user = await get_current_user(request)
+    if not user:
+        raise HTTPException(401, "Authentication required")
+
+    import database
+    from ..services.recipe_service import RecipeService
+    from ..services.run_service import RunService
+    from ..dependencies import get_redis_client, get_cache_manager
+
+    actor_id = user.actor_id
+    deleted = {
+        "runs": 0,
+        "recipes": 0,
+        "effects": 0,
+        "media": 0,
+    }
+    errors = []
+
+    # Delete all runs
+    try:
+        run_service = RunService(database, get_redis_client(), get_cache_manager())
+        runs = await run_service.list_runs(actor_id, offset=0, limit=10000)
+        for run in runs:
+            try:
+                await run_service.discard_run(run["run_id"], actor_id)
+                deleted["runs"] += 1
+            except Exception as e:
+                errors.append(f"Run {run['run_id']}: {e}")
+    except Exception as e:
+        errors.append(f"Failed to list runs: {e}")
+
+    # Delete all recipes
+    try:
+        recipe_service = RecipeService(get_redis_client(), get_cache_manager())
+        recipes = await recipe_service.list_recipes(actor_id, offset=0, limit=10000)
+        for recipe in recipes:
+            try:
+                await recipe_service.delete_recipe(recipe["recipe_id"], actor_id)
+                deleted["recipes"] += 1
+            except Exception as e:
+                errors.append(f"Recipe {recipe['recipe_id']}: {e}")
+    except Exception as e:
+        errors.append(f"Failed to list recipes: {e}")
+
+    # Delete all effects
+    try:
+        cache_manager = get_cache_manager()
+        effects_dir = Path(cache_manager.cache_dir) / "_effects"
+        if effects_dir.exists():
+            import shutil
+            for effect_dir in effects_dir.iterdir():
+                if effect_dir.is_dir():
+                    try:
+                        shutil.rmtree(effect_dir)
+                        deleted["effects"] += 1
+                    except Exception as e:
+                        errors.append(f"Effect {effect_dir.name}: {e}")
+    except Exception as e:
+        errors.append(f"Failed to delete effects: {e}")
+
+    # Delete all media/cache items for user
+    try:
+        items = await database.get_user_items(actor_id, limit=10000)
+        for item in items:
+            try:
+                cid = item.get("cid")
+                if cid:
+                    await database.delete_cache_item(cid)
+                    deleted["media"] += 1
+            except Exception as e:
+                errors.append(f"Media {item.get('cid', 'unknown')}: {e}")
+    except Exception as e:
+        errors.append(f"Failed to list media: {e}")
+
+    logger.info(f"Cleared data for {actor_id}: {deleted}")
+    if errors:
+        logger.warning(f"Errors during clear: {errors[:10]}")  # Log first 10 errors
+
+    return {
+        "message": "User data cleared",
+        "deleted": deleted,
+        "errors": errors[:10] if errors else [],  # Return first 10 errors
+        "storage_preserved": True,
+    }
+
+
 @router.get("/")
 async def home(request: Request):
     """