feat: global search and keyboard shortcuts

Ctrl/⌘ K (or /) opens a search over the projects and tickets of all my
projects, driven by the keyboard. g plus a letter moves between project
pages, c creates a ticket on the board, e edits the open ticket and ?
lists every shortcut. My work can now be searched by text through the API.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/web/tracker/domain/src/index.ts

@@ -9,3 +9,4 @@ export * from './lib/models/views';
 export * from './lib/models/estimation';
 export * from './lib/models/swimlanes';
 export * from './lib/models/roadmap';
+export * from './lib/models/shortcuts';