feat: add local files provider with indexing and rescan functionality

- Implemented LocalFilesProvider to manage local video files.
- Added LocalIndex for in-memory and SQLite-backed indexing of video files.
- Introduced scanning functionality to detect video files and extract metadata.
- Added API endpoints for listing collections, genres, and series based on provider capabilities.
- Enhanced existing routes to check for provider capabilities before processing requests.
- Updated frontend to utilize provider capabilities for conditional rendering of UI elements.
- Implemented rescan functionality to refresh the local files index.
- Added database migration for local files index schema.

k-tv-frontend/app/(main)/dashboard/components/edit-channel-sheet.tsx

@@ -19,6 +19,7 @@ import type {
   FillStrategy,
   ContentType,
   MediaFilter,
+  ProviderCapabilities,
   RecyclePolicy,
 } from "@/lib/types";
 
@@ -238,6 +239,7 @@ interface AlgorithmicFilterEditorProps {
   errors: FieldErrors;
   setFilter: (patch: Partial<MediaFilter>) => void;
   setStrategy: (strategy: FillStrategy) => void;
+  capabilities?: ProviderCapabilities;
 }
 
 function AlgorithmicFilterEditor({
@@ -246,14 +248,23 @@ function AlgorithmicFilterEditor({
   errors,
   setFilter,
   setStrategy,
+  capabilities,
 }: AlgorithmicFilterEditorProps) {
   const [showGenres, setShowGenres] = useState(false);
 
   const { data: collections, isLoading: loadingCollections } = useCollections();
-  const { data: series, isLoading: loadingSeries } = useSeries();
-  const { data: genreOptions } = useGenres(content.filter.content_type ?? undefined);
+  const { data: series, isLoading: loadingSeries } = useSeries(undefined, {
+    enabled: capabilities?.series !== false,
+  });
+  const { data: genreOptions } = useGenres(content.filter.content_type ?? undefined, {
+    enabled: capabilities?.genres !== false,
+  });
 
   const isEpisode = content.filter.content_type === "episode";
+  const collectionLabel =
+    capabilities?.collections && !capabilities?.series && !capabilities?.genres
+      ? "Directory"
+      : "Library";
 
   return (
     <div className="space-y-3 rounded-md border border-zinc-700/50 bg-zinc-800 p-3">
@@ -289,8 +300,8 @@ function AlgorithmicFilterEditor({
         </Field>
       </div>
 
-      {/* Series — only meaningful for episodes */}
-      {isEpisode && (
+      {/* Series — only meaningful for episodes when provider supports it */}
+      {isEpisode && capabilities?.series !== false && (
         <Field
           label="Series"
           hint={
@@ -308,15 +319,15 @@ function AlgorithmicFilterEditor({
         </Field>
       )}
 
-      {/* Library — real collection names when the provider supports it */}
+      {/* Library/Directory — real collection names when the provider supports it */}
       <Field
-        label="Library"
+        label={collectionLabel}
         hint={
           loadingCollections
-            ? "Loading libraries…"
+            ? `Loading ${collectionLabel.toLowerCase()}s…`
             : collections
-              ? "Scope this block to one library"
-              : "Enter a provider library ID"
+              ? `Scope this block to one ${collectionLabel.toLowerCase()}`
+              : `Enter a provider ${collectionLabel.toLowerCase()} ID`
         }
       >
         {collections && collections.length > 0 ? (
@@ -341,7 +352,8 @@ function AlgorithmicFilterEditor({
         )}
       </Field>
 
-      {/* Genres with browse-from-library shortcut */}
+      {/* Genres — only shown when provider supports it */}
+      {capabilities?.genres !== false && (
       <Field label="Genres" hint="Press Enter or comma to add">
         <TagInput
           values={content.filter.genres}
@@ -376,6 +388,7 @@ function AlgorithmicFilterEditor({
           </div>
         )}
       </Field>
+      )}
 
       <Field label="Tags" hint="Press Enter or comma to add">
         <TagInput
@@ -435,9 +448,10 @@ interface BlockEditorProps {
   onChange: (block: ProgrammingBlock) => void;
   onRemove: () => void;
   onSelect: () => void;
+  capabilities?: ProviderCapabilities;
 }
 
-function BlockEditor({ block, index, isSelected, color, errors, onChange, onRemove, onSelect }: BlockEditorProps) {
+function BlockEditor({ block, index, isSelected, color, errors, onChange, onRemove, onSelect, capabilities }: BlockEditorProps) {
   const [expanded, setExpanded] = useState(isSelected);
   const elRef = useRef<HTMLDivElement>(null);
 
@@ -555,6 +569,7 @@ function BlockEditor({ block, index, isSelected, color, errors, onChange, onRemo
                 errors={errors}
                 setFilter={setFilter}
                 setStrategy={setStrategy}
+                capabilities={capabilities}
               />
 
               {content.strategy === "sequential" && (
@@ -719,6 +734,7 @@ interface EditChannelSheetProps {
   ) => void;
   isPending: boolean;
   error?: string | null;
+  capabilities?: ProviderCapabilities;
 }
 
 export function EditChannelSheet({
@@ -728,6 +744,7 @@ export function EditChannelSheet({
   onSubmit,
   isPending,
   error,
+  capabilities,
 }: EditChannelSheetProps) {
   const [name, setName] = useState("");
   const [description, setDescription] = useState("");
@@ -1027,6 +1044,7 @@ export function EditChannelSheet({
                     onChange={(b) => updateBlock(idx, b)}
                     onRemove={() => removeBlock(idx)}
                     onSelect={() => setSelectedBlockId(block.id)}
+                    capabilities={capabilities}
                   />
                 ))}
               </div>