chore(api): regenerate api.ts with the timeline root-tag fields

openapi-typescript pickup of TimelineEntryDTO.rootTagId/rootTagName/
rootTagColor (all optional), so the SvelteKit timeline can read the new
letter chip fields. Regenerated from the live dev spec; only the additive
fields differ from the committed baseline.

Refs #835
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/lib/generated/api.ts

@@ -2455,6 +2455,10 @@ export interface components {
             linkedPersonIds?: string[];
             /** @enum {string} */
             derivedType?: "BIRTH" | "DEATH" | "MARRIAGE";
+            /** Format: uuid */
+            rootTagId?: string;
+            rootTagName?: string;
+            rootTagColor?: string;
         };
         TimelineYearDTO: {
             /** Format: int32 */