Tree layout toggles (landscape/portrait/fan), card->profile, server search

Tree page gets Landscape/Portrait/Fan toggles: landscape & portrait via family-chart's orientation; a hand-rolled radial Fan chart of ancestors (rings per generation, click to recenter). Clicking a card recenters and updates an 'Open <name> →' link to that person's profile. The People directory search now hits the server-side pg_trgm fuzzy endpoint (debounced) so it spans the whole tree, not just the loaded page.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: Justin Paul <justin@jpaul.me>

frontend/lib/api/schema.d.ts

@@ -1412,6 +1412,7 @@ export interface operations {
         parameters: {
             query?: {
                 deleted?: boolean;
+                q?: string | null;
             };
             header?: never;
             path: {