feat(phase9): frontend types + persistence wiring for llmTags

TranscriptEntry gains llmTags: string[]; TranscriptRow gains the
storage-shape llmTags: string. ContentTags type added. mapTranscriptRow
hydrates llmTags from the comma-joined column. saveTranscriptMeta
forwards llmTags through to update_transcript_meta_cmd, mirroring the
existing manualTags handling.

buildFrontmatter unions auto + manual + llm tags so exported markdown
surfaces every source in one tags: list.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/stores/page.svelte.ts

@@ -144,6 +144,8 @@ function mapTranscriptRow(row: TranscriptDto): TranscriptEntry {
   const text = row.text ?? "";
   const rawTags = row.manualTags ?? "";
   const manualTags = rawTags ? rawTags.split(",").filter(Boolean) : [];
+  const rawLlmTags = row.llmTags ?? "";
+  const llmTags = rawLlmTags ? rawLlmTags.split(",").filter(Boolean) : [];
   const rawSegments = row.segmentsJson ?? "";
   let segments: Segment[] = [];
   if (rawSegments) {
@@ -173,6 +175,7 @@ function mapTranscriptRow(row: TranscriptDto): TranscriptEntry {
     template: row.template ?? "",
     language: row.language ?? "",
     segments,
+    llmTags,
   };
 }
 
@@ -196,6 +199,7 @@ function normaliseTranscriptEntry(entry: TranscriptWriteEntry): TranscriptEntry
     template: entry.template ?? "",
     language: entry.language ?? "",
     segments: Array.isArray(entry.segments) ? entry.segments : [],
+    llmTags: Array.isArray(entry.llmTags) ? entry.llmTags : [],
   };
 }
 
@@ -292,6 +296,11 @@ export async function saveTranscriptMeta(id: string, patch: TranscriptMetaPatch)
       template: patch.template,
       language: patch.language,
       segmentsJson: patch.segments === undefined ? undefined : JSON.stringify(patch.segments),
+      llmTags: patch.llmTags == null
+        ? undefined
+        : (Array.isArray(patch.llmTags)
+            ? patch.llmTags.join(",")
+            : String(patch.llmTags)),
     };
     const row = await invoke<TranscriptDto>("update_transcript_meta_cmd", {
       id: String(id),

src/lib/types/app.ts

@@ -180,6 +180,8 @@ export interface TranscriptDto {
   template: string;
   language: string;
   segmentsJson: string;
+  /** Phase 9. Comma-joined LLM-generated tags ("topic:foo", "intent:..."). */
+  llmTags: string;
 }
 
 export interface TranscriptEntry {
@@ -200,6 +202,13 @@ export interface TranscriptEntry {
   template: string;
   language: string;
   segments: Segment[];
+  /** Phase 9. AI-generated content tags ("topic:foo", "intent:..."). */
+  llmTags: string[];
+}
+
+export interface ContentTags {
+  topic: string;
+  intent: string;
 }
 
 export interface TranscriptWriteEntry extends Partial<TranscriptEntry> {
@@ -220,6 +229,9 @@ export interface TranscriptMetaPatch {
   template?: string;
   language?: string;
   segments?: Segment[];
+  /** Phase 9. Pass an array to set, an empty array to clear, or omit
+   *  the field to leave llm_tags unchanged. */
+  llmTags?: string[] | string;
 }
 
 /**

src/lib/utils/frontmatter.ts

@@ -90,7 +90,12 @@ export function buildFrontmatter(item: TranscriptEntry | null) {
   if (!item) return {};
   const auto = deriveAutoTags(item);
   const manual = Array.isArray(item.manualTags) ? item.manualTags : [];
-  const tags = Array.from(new Set([...auto, ...manual.map(normaliseTag)])).filter(Boolean);
+  const llm = Array.isArray(item.llmTags) ? item.llmTags : [];
+  const tags = Array.from(new Set([
+    ...auto,
+    ...manual.map(normaliseTag),
+    ...llm.map(normaliseTag),
+  ])).filter(Boolean);
   const wordCount = item.text ? item.text.trim().split(/\s+/).filter(Boolean).length : 0;
   return {
     id: item.id,