chore: add diagnostic and seeding scripts

- Add script to generate bcrypt admin password hash.
- Add script to seed sample articles for local development.
- Add Kimi/Moonshot API diagnostic scripts (SDK and direct curl).

scripts/test-kimi.ts

@@ -0,0 +1,27 @@
+import { getActiveKey } from '../src/lib/api-keys';
+import { getAiClient, getAiModel } from '../src/lib/ai/client';
+
+async function main() {
+  const key = await getActiveKey('KIMI');
+  if (!key) {
+    console.log('No active KIMI key found');
+    return;
+  }
+  console.log('Found active KIMI key. Length:', key.length);
+  console.log('API URL:', process.env.KIMI_API_URL || 'https://api.moonshot.cn/v1');
+  console.log('Model:', process.env.KIMI_MODEL || 'moonshot-v1-8k');
+
+  try {
+    const client = await getAiClient();
+    const res = await client.chat.completions.create({
+      model: getAiModel(),
+      messages: [{ role: 'user', content: 'Say hello' }],
+    });
+    console.log('SUCCESS:', res.choices[0]?.message?.content);
+  } catch (err: any) {
+    console.error('FAILED:', err.status, err.message);
+    if (err.error) console.error('API error:', err.error);
+  }
+}
+
+main().catch(console.error);