Add daily journal system (Milestone 5)

- Add journal service with date-based organization
- Add quick capture with timestamps and tags
- Add auto-linking for mentioned nodes and hashtags
- Add AI-powered daily summary generation
- Add journal search across all entries
- Add CLI commands: journal, j (alias), c (quick capture)
- Add MCP tools: memory_journal, memory_journal_list, memory_journal_summarize

src/cli/index.ts

@@ -17,6 +17,7 @@ import { restoreCommand } from './commands/restore';
 import { captureCommand, captureHookCommand, configCommand } from './commands/capture';
 import { contextCommand, contextHookCommand } from './commands/context';
 import { indexCommand } from './commands/index-cmd';
+import { journalCommand, journalAliasCommand, quickCaptureCommand } from './commands/journal';
 import { closeDb } from '../core/db';
 
 const program = new Command();
@@ -46,6 +47,9 @@ program.addCommand(contextCommand);
 program.addCommand(contextHookCommand);
 program.addCommand(configCommand);
 program.addCommand(indexCommand);
+program.addCommand(journalCommand);
+program.addCommand(journalAliasCommand);
+program.addCommand(quickCaptureCommand);
 
 program.hook('postAction', () => {
   closeDb();