Add URL and content ingestion (Milestone 6)

- Add URL fetching with HTML-to-text extraction
- Add basic PDF text extraction
- Add smart content chunking with overlap
- Add deduplication via content checksums
- Add auto-linking to semantically related nodes
- Add CLI commands: ingest, clip
- Add MCP tools: memory_ingest, memory_clip

src/cli/index.ts

@@ -18,6 +18,7 @@ import { captureCommand, captureHookCommand, configCommand } from './commands/ca
 import { contextCommand, contextHookCommand } from './commands/context';
 import { indexCommand } from './commands/index-cmd';
 import { journalCommand, journalAliasCommand, quickCaptureCommand } from './commands/journal';
+import { ingestCommand, clipCommand } from './commands/ingest';
 import { closeDb } from '../core/db';
 
 const program = new Command();
@@ -50,6 +51,8 @@ program.addCommand(indexCommand);
 program.addCommand(journalCommand);
 program.addCommand(journalAliasCommand);
 program.addCommand(quickCaptureCommand);
+program.addCommand(ingestCommand);
+program.addCommand(clipCommand);
 
 program.hook('postAction', () => {
   closeDb();