初始提交：ai-review 项目当前版本（含赛道一/二提交规范修订与时间节点文档）

server/check-std.js

@@ -0,0 +1,14 @@
+const db = require('./dist/db').default || require('./dist/db');
+const projectId = 'b1b5884e-ba85-4d8f-9a92-e524603587a0';
+
+// All standards for this project
+const all = db.prepare('SELECT id, name, category_tag FROM standards WHERE project_id = ?').all(projectId);
+console.log('ALL STANDARDS:', JSON.stringify(all, null, 2));
+
+// Try exact match with empty string
+const m1 = db.prepare('SELECT id, name FROM standards WHERE project_id = ? AND category_tag = ?').get(projectId, '');
+console.log('MATCH EMPTY:', m1);
+
+// Try exact match with empty string as first param
+const m2 = db.prepare('SELECT id, name FROM standards WHERE project_id = ? AND (category_tag = ? OR category_tag IS NULL)').get(projectId, '');
+console.log('MATCH EMPTY OR NULL:', m2);