merge(feat/person-birth-death-years): resolve conflicts with main, bump migration to V6

Resolves merge conflicts with main (feat/person-notes merged first).
Combines both features: birth/death years and notes field on person detail.
Renames migration V5__add_birth_death_years to V6 to avoid Flyway conflict.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/lib/generated/api.ts

@@ -307,6 +307,7 @@ export interface components {
             firstName: string;
             lastName: string;
             alias?: string;
+            notes?: string;
             birthYear?: number;
             deathYear?: number;
         };