feat: skip existing media in STRM tree generation

web/src/api/strm.ts

@@ -49,6 +49,7 @@ export type GenerateSTRMTreeInput = {
   dry_run?: boolean
   batch_limit?: number
   transfer_subtitles?: boolean
+  missing_only?: boolean
   refresh_library?: boolean
 }
 

web/src/pages/StrmTreeGenerateSection.tsx

@@ -32,6 +32,7 @@ export function StrmTreeGenerateSection({
   batchLimit,
   cleanup,
   generating,
+  missingOnly,
   onGenerate,
   onPreview,
   onImportTreeFile,
@@ -46,6 +47,7 @@ export function StrmTreeGenerateSection({
   setBaseURL,
   setBatchLimit,
   setCleanup,
+  setMissingOnly,
   setOutputDir,
   setOutputPrefix,
   setOverwrite,
@@ -187,6 +189,10 @@ export function StrmTreeGenerateSection({
           <input type="checkbox" checked={transferSubtitles} onChange={(e) => setTransferSubtitles(e.target.checked)} />
           转移同名字幕链接
         </label>
+        <label className="flex min-h-10 items-center gap-2 rounded-2xl border border-gray-200 bg-white/70 px-3 py-2 text-sm text-ink-50 md:col-span-4">
+          <input type="checkbox" checked={missingOnly} onChange={(e) => setMissingOnly(e.target.checked)} />
+          仅生成媒体库缺失
+        </label>
         <label className="flex min-h-10 items-center gap-2 rounded-2xl border border-gray-200 bg-white/70 px-3 py-2 text-sm text-ink-50 md:col-span-4">
           <input type="checkbox" checked={refreshLibrary} onChange={(e) => setRefreshLibrary(e.target.checked)} />
           生成后刷新媒体库

web/src/pages/useStrmTreeGenerateForm.ts

@@ -18,6 +18,7 @@ export function useStrmTreeGenerateForm() {
   const [overwrite, setOverwrite] = useState(false)
   const [cleanup, setCleanup] = useState(false)
   const [transferSubtitles, setTransferSubtitles] = useState(true)
+  const [missingOnly, setMissingOnly] = useState(false)
   const [refreshLibrary, setRefreshLibrary] = useState(true)
   const [runningMode, setRunningMode] = useState<'generate' | 'preview' | null>(null)
   const [result, setResult] = useState<GenerateSTRMResult | null>(null)
@@ -72,6 +73,7 @@ export function useStrmTreeGenerateForm() {
         dry_run: dryRun,
         batch_limit: parsedBatchLimit || undefined,
         transfer_subtitles: transferSubtitles,
+        missing_only: missingOnly,
         refresh_library: refreshLibrary,
       })
       setResult(next)
@@ -104,6 +106,7 @@ export function useStrmTreeGenerateForm() {
     onImportTreeFile,
     onGenerate,
     onPreview,
+    missingOnly,
     outputDir,
     outputPrefix,
     overwrite,
@@ -115,6 +118,7 @@ export function useStrmTreeGenerateForm() {
     setBaseURL,
     setBatchLimit,
     setCleanup,
+    setMissingOnly,
     setOutputDir,
     setOutputPrefix,
     setOverwrite,