refactor: remove unused reset-repo endpoint

The endpoint was defined but never exposed publicly.
Delete records via API instead.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[e-mail]>

src/pds.js

···
   '/status': {
     handler: (pds, _req, _url) => pds.handleStatus(),
   },
-  '/reset-repo': {
-    handler: (pds, _req, _url) => pds.handleResetRepo(),
-  },
   '/forward-event': {
     handler: (pds, req, _url) => pds.handleForwardEvent(req),
   },
···
   async handleStatus() {
     const did = await this.getDid();
     return Response.json({ initialized: !!did, did: did || null });
-  }
-
-  async handleResetRepo() {
-    const did = await this.getDid();
-    if (!did) {
-      return Response.json({ ok: true, message: 'no repo to reset', deleted: 0 });
-    }
-
-    // Get all records before deleting
-    const records = /** @type {{collection: string, rkey: string}[]} */ (
-      this.sql.exec('SELECT collection, rkey FROM records').toArray()
-    );
-
-    // Delete each record through normal flow (emits events to firehose)
-    for (const { collection, rkey } of records) {
-      await this.deleteRecord(collection, rkey);
-    }
-
-    // Clean up remaining state
-    this.sql.exec('DELETE FROM blocks');
-    this.sql.exec('DELETE FROM commits');
-    this.sql.exec('DELETE FROM seq_events');
-    await this.state.storage.delete('head');
-    await this.state.storage.delete('rev');
-
-    return Response.json({ ok: true, message: 'repo data cleared', deleted: records.length });
   }
 
   /** @param {Request} request */