Requests: Various fixes and improvements (#617)

- Refactored activity backend for full user-level management, using the
db file
- Revamped the activity sidebar UX and categorisation
- Added download history and user filtering
- Added User Preferences modal, giving limited configuration for
non-admins - replaces the "restrict settings" config option.
- Many many bug fixes
- Many many new tests

tests/core/test_user_db.py

@@ -62,6 +62,18 @@ class TestUserDBInitialization:
         assert cursor.fetchone() is not None
         conn.close()
 
+    def test_initialize_creates_activity_tables(self, user_db, db_path):
+        conn = sqlite3.connect(db_path)
+        activity_log = conn.execute(
+            "SELECT name FROM sqlite_master WHERE type='table' AND name='activity_log'"
+        ).fetchone()
+        dismissals = conn.execute(
+            "SELECT name FROM sqlite_master WHERE type='table' AND name='activity_dismissals'"
+        ).fetchone()
+        assert activity_log is not None
+        assert dismissals is not None
+        conn.close()
+
     def test_initialize_creates_download_requests_indexes(self, user_db, db_path):
         conn = sqlite3.connect(db_path)
         rows = conn.execute(
@@ -72,6 +84,22 @@ class TestUserDBInitialization:
         assert "idx_download_requests_status_created_at" in index_names
         conn.close()
 
+    def test_initialize_creates_activity_indexes(self, user_db, db_path):
+        conn = sqlite3.connect(db_path)
+        rows = conn.execute(
+            "SELECT name FROM sqlite_master WHERE type='index' AND tbl_name='activity_log'"
+        ).fetchall()
+        log_index_names = {row[0] for row in rows}
+        assert "idx_activity_log_user_terminal" in log_index_names
+        assert "idx_activity_log_lookup" in log_index_names
+
+        rows = conn.execute(
+            "SELECT name FROM sqlite_master WHERE type='index' AND tbl_name='activity_dismissals'"
+        ).fetchall()
+        dismissal_index_names = {row[0] for row in rows}
+        assert "idx_activity_dismissals_user_dismissed_at" in dismissal_index_names
+        conn.close()
+
     def test_initialize_enables_wal_mode(self, user_db, db_path):
         conn = sqlite3.connect(db_path)
         cursor = conn.execute("PRAGMA journal_mode")