feat: add settings tabs, auto backup, and show latest 5 backups

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_backup.py

@@ -3,22 +3,29 @@ from pathlib import Path
 import pytest
 
 from packages.db.backup import (
+    DISPLAY_LIMIT,
     backup_db,
     is_valid_backup_name,
     list_backups,
+    prune_backups,
     resolve_backup_file,
     restore_db,
+    should_auto_backup,
 )
 
 
+def _make_db(path: Path, value: str = "hello") -> None:
+    conn = __import__("sqlite3").connect(str(path))
+    conn.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, v TEXT)")
+    conn.execute("INSERT INTO t(v) VALUES (?)", (value,))
+    conn.commit()
+    conn.close()
+
+
 def test_backup_roundtrip(tmp_path: Path):
     db = tmp_path / "live.db"
     backup_dir = tmp_path / "backups"
-    conn = __import__("sqlite3").connect(str(db))
-    conn.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, v TEXT)")
-    conn.execute("INSERT INTO t(v) VALUES ('hello')")
-    conn.commit()
-    conn.close()
+    _make_db(db)
 
     dest = backup_db(db, backup_dir, tz="UTC")
     assert dest.is_file()
@@ -41,6 +48,41 @@ def test_backup_roundtrip(tmp_path: Path):
     assert resolve_backup_file(backup_dir, dest.name) == dest.resolve()
 
 
+def test_list_limit_and_prune(tmp_path: Path):
+    backup_dir = tmp_path / "backups"
+    backup_dir.mkdir()
+    for i in range(7):
+        p = backup_dir / f"market_intel_2026080{i+1}_120000.db"
+        p.write_bytes(b"x" * (i + 1))
+        # mtime 递增，便于 prune 保留最新
+        import os
+
+        os.utime(p, (1_700_000_000 + i, 1_700_000_000 + i))
+
+    all_items = list_backups(backup_dir)
+    assert len(all_items) == 7
+    limited = list_backups(backup_dir, limit=DISPLAY_LIMIT)
+    assert len(limited) == 5
+    assert limited[0]["name"] == "market_intel_20260807_120000.db"
+
+    removed = prune_backups(backup_dir, keep=3)
+    assert removed == 4
+    left = list_backups(backup_dir)
+    assert len(left) == 3
+    assert left[0]["name"] == "market_intel_20260807_120000.db"
+
+
+def test_should_auto_backup(tmp_path: Path):
+    assert should_auto_backup(tmp_path, enabled=False, interval_hours=24) is False
+    assert should_auto_backup(tmp_path, enabled=True, interval_hours=24) is True
+
+    db = tmp_path / "live.db"
+    _make_db(db)
+    backup_db(db, tmp_path, tz="UTC")
+    assert should_auto_backup(tmp_path, enabled=True, interval_hours=24) is False
+    assert should_auto_backup(tmp_path, enabled=True, interval_hours=0.000001) is True
+
+
 def test_invalid_backup_name(tmp_path: Path):
     with pytest.raises(ValueError):
         resolve_backup_file(tmp_path, "../etc/passwd")