chore: initial baseline with P0-safety .gitignore

backend/migrate_v53.py

@@ -0,0 +1,32 @@
+import sqlite3
+conn = sqlite3.connect('it_smart_desk.db')
+cursor = conn.cursor()
+
+# 添加三个缺失的列
+alterations = [
+    ("impact_scope", "INTEGER", "0"),
+    ("is_blocking", "BOOLEAN", "0"),
+    ("emotion_state", "VARCHAR(20)", "'normal'"),
+]
+
+for col_name, col_type, default_val in alterations:
+    try:
+        cursor.execute(f"ALTER TABLE conversations ADD COLUMN {col_name} {col_type} NOT NULL DEFAULT {default_val}")
+        print(f"ADDED: {col_name}")
+    except sqlite3.OperationalError as e:
+        if "duplicate column" in str(e).lower():
+            print(f"SKIP: {col_name} already exists")
+        else:
+            print(f"ERROR: {col_name} — {e}")
+
+conn.commit()
+
+# Verify
+cursor.execute('PRAGMA table_info(conversations)')
+cols = [row[1] for row in cursor.fetchall()]
+for m in ['impact_scope', 'is_blocking', 'emotion_state']:
+    status = "EXISTS" if m in cols else "MISSING!"
+    print(f'Verify {m}: {status}')
+
+conn.close()
+print("\nDone — restart the backend server for changes to take effect.")