Add interactive TUI dashboard (Milestone 11)

- Lightweight TUI using Node.js readline (no extra deps)
- Browse nodes with vim-style navigation (j/k/arrows)
- Real-time search with / key
- Detail view with connections
- Filter by kind (1-4 keys)
- CLI: cortex tui, cortex ui

src/cli/index.ts

@@ -24,6 +24,7 @@ import { importCommand } from './commands/import';
 import { backupCommand, restoreDbCommand, listBackupsCommand } from './commands/backup-cmd';
 import { graphsCommand, useCommand, initCommand } from './commands/graphs';
 import { smartSearchCommand, ssCommand, whatCommand, contextAwareCommand } from './commands/smart';
+import { tuiCommand, uiCommand } from './commands/tui';
 import { closeDb } from '../core/db';
 import { migrateOldDatabase } from '../core/db';
 
@@ -72,6 +73,8 @@ program.addCommand(smartSearchCommand);
 program.addCommand(ssCommand);
 program.addCommand(whatCommand);
 program.addCommand(contextAwareCommand);
+program.addCommand(tuiCommand);
+program.addCommand(uiCommand);
 
 // Check for old database migration
 migrateOldDatabase();