fix: Correct OAuth localhost/127.0.0.1 config and fix grapheme counting for Bluesky posts

- Fixed OAuth client configuration to properly use localhost for client_id and 127.0.0.1 for redirect_uris per RFC 8252 and ATproto spec
- Added proper grapheme counting using RichText API instead of character length
- Fixed thread splitting to account for link suffix and thread indicators in grapheme limits
- Added GOOGLE_EMBEDDING_DIMENSIONS env var to all env files
- Added clear-nodes.ts utility script for database management
- Added galaxy node detail page route

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

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

scripts/clear-nodes.ts

@@ -0,0 +1,23 @@
+import Surreal from 'surrealdb';
+
+async function clearNodes() {
+  const db = new Surreal();
+
+  try {
+    await db.connect('ws://localhost:8000/rpc');
+    await db.signin({ username: 'root', password: 'root' });
+    await db.use({ namespace: 'ponderants', database: 'main' });
+
+    console.log('Deleting all nodes...');
+    const result = await db.query('DELETE node;');
+    console.log('Result:', result);
+
+    console.log('✓ All nodes deleted successfully');
+  } catch (error) {
+    console.error('Error:', error);
+  } finally {
+    await db.close();
+  }
+}
+
+clearNodes();