diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1b4192f..86e5cda 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -307,6 +307,7 @@ repos:
         types_or: [yaml, json, markdown]
         exclude: ^(Bash/|\.venv/|.*\.lock$|C/compile_commands\.json)
         stages: [pre-push]
+        args: [--no-cache]
 
   # ===========================================================================
   # SHELLCHECK - Shell script linting
@@ -463,7 +464,7 @@ repos:
     hooks:
       - id: ts-battery-status-tests
         name: TS battery-status vitest (100% coverage)
-        entry: bash -c 'cd TS/battery-status && npx vitest run --coverage'
+        entry: bash -c 'cd TS/battery-status && NODE_OPTIONS="--max-old-space-size=512" npx vitest run --coverage'
         language: system
         files: ^TS/battery-status/
         pass_filenames: false
@@ -471,7 +472,7 @@ repos:
 
       - id: ts-champions-leauge-scores-tests
         name: TS champions_leauge_scores vitest (100% coverage)
-        entry: bash -c 'cd TS/champions_leauge_scores && npx vitest run --coverage'
+        entry: bash -c 'cd TS/champions_leauge_scores && NODE_OPTIONS="--max-old-space-size=512" npx vitest run --coverage'
         language: system
         files: ^TS/champions_leauge_scores/
         pass_filenames: false
@@ -479,7 +480,7 @@ repos:
 
       - id: ts-two-inputs-tests
         name: TS two-inputs vitest (100% coverage)
-        entry: bash -c 'cd TS/two-inputs && npx vitest run --coverage'
+        entry: bash -c 'cd TS/two-inputs && NODE_OPTIONS="--max-old-space-size=512" npx vitest run --coverage'
         language: system
         files: ^TS/two-inputs/
         pass_filenames: false
diff --git a/.vscode/settings.json b/.vscode/settings.json
index a8e9318..595f7fa 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -67,5 +67,6 @@
   ],
   "python.testing.pytestEnabled": true,
   "python.testing.pytestArgs": ["python_pkg"],
-  "python-envs.alwaysUseUv": true
+  "python-envs.alwaysUseUv": true,
+  "cmake.sourceDirectory": "/home/kuhy/testsAndMisc/pomodoro_app/linux"
 }
diff --git a/python_pkg/screen_locker/_phone_verification.py b/python_pkg/screen_locker/_phone_verification.py
index 513632f..869be3f 100644
--- a/python_pkg/screen_locker/_phone_verification.py
+++ b/python_pkg/screen_locker/_phone_verification.py
@@ -267,7 +267,7 @@ class PhoneVerificationMixin:
         Returns:
             True if the latest finish time is within 24 hours of now.
         """
-        max_age_seconds = 24 * 3600
+        max_age_seconds = 24 * 3600  # accept same-day workouts
         try:
             conn = sqlite3.connect(str(db_path))
             try:
diff --git a/python_pkg/screen_locker/screen_lock.py b/python_pkg/screen_locker/screen_lock.py
index adb9569..f25855c 100755
--- a/python_pkg/screen_locker/screen_lock.py
+++ b/python_pkg/screen_locker/screen_lock.py
@@ -304,7 +304,9 @@ class ScreenLocker(
                     "HMAC key unavailable — accepting unsigned entry",
                 )
                 return True
-            _logger.warning("HMAC verification failed for today's log entry")
+            _logger.warning(
+                "HMAC verification failed for today's log entry",
+            )
             return False
 
     def _load_existing_logs(self) -> dict:
diff --git a/python_pkg/screen_locker/tests/test_adb_and_phone.py b/python_pkg/screen_locker/tests/test_adb_and_phone.py
index 17cef56..171adf5 100644
--- a/python_pkg/screen_locker/tests/test_adb_and_phone.py
+++ b/python_pkg/screen_locker/tests/test_adb_and_phone.py
@@ -795,7 +795,7 @@ class TestIsWorkoutFinishRecent:
         mock_sys_exit: MagicMock,
         tmp_path: Path,
     ) -> None:
-        """Test returns False for workout that finished >4 hours ago."""
+        """Test returns False for workout that finished >24 hours ago."""
         locker = create_locker(mock_tk, tmp_path)
         db_file = tmp_path / "sl_test.db"
         conn = sqlite3.connect(str(db_file))
@@ -803,9 +803,9 @@ class TestIsWorkoutFinishRecent:
             "CREATE TABLE workouts "
             "(id TEXT PRIMARY KEY, start INTEGER, finish INTEGER)",
         )
-        # Finished 5 hours ago (but still "today" in local time)
+        # Finished 25 hours ago (not "today" in local time either)
         now_ms = int(time.time() * 1000)
-        old_finish = now_ms - 5 * 3600 * 1000
+        old_finish = now_ms - 25 * 3600 * 1000  # beyond 24h window
         conn.execute(
             "INSERT INTO workouts VALUES (?, ?, ?)",
             ("w1", old_finish - 3600000, old_finish),
diff --git a/python_pkg/screen_locker/tests/test_init_and_log.py b/python_pkg/screen_locker/tests/test_init_and_log.py
index c74e110..c08e8bb 100644
--- a/python_pkg/screen_locker/tests/test_init_and_log.py
+++ b/python_pkg/screen_locker/tests/test_init_and_log.py
@@ -154,6 +154,60 @@ class TestHasLoggedToday:
         ):
             assert locker.has_logged_today() is False
 
+    def test_today_unsigned_entry_no_hmac_key(
+        self,
+        mock_tk: MagicMock,
+        mock_sys_exit: MagicMock,
+        tmp_path: Path,
+    ) -> None:
+        """Accept unsigned entry when HMAC key is unavailable."""
+        log_file = tmp_path / "workout_log.json"
+        today = datetime.now(tz=timezone.utc).strftime("%Y-%m-%d")
+        log_file.write_text(
+            json.dumps({today: {"workout": "data"}}),
+        )
+
+        locker = create_locker(mock_tk, tmp_path)
+        locker.log_file = log_file
+        with (
+            patch(
+                "python_pkg.screen_locker.screen_lock.verify_entry_hmac",
+                return_value=False,
+            ),
+            patch(
+                "python_pkg.screen_locker.screen_lock._load_hmac_key",
+                return_value=None,
+            ),
+        ):
+            assert locker.has_logged_today() is True
+
+    def test_today_unsigned_entry_with_hmac_key(
+        self,
+        mock_tk: MagicMock,
+        mock_sys_exit: MagicMock,
+        tmp_path: Path,
+    ) -> None:
+        """Reject unsigned entry when HMAC key IS available."""
+        log_file = tmp_path / "workout_log.json"
+        today = datetime.now(tz=timezone.utc).strftime("%Y-%m-%d")
+        log_file.write_text(
+            json.dumps({today: {"workout": "data"}}),
+        )
+
+        locker = create_locker(mock_tk, tmp_path)
+        locker.log_file = log_file
+        with (
+            patch(
+                "python_pkg.screen_locker.screen_lock.verify_entry_hmac",
+                return_value=False,
+            ),
+            patch(
+                "python_pkg.screen_locker.screen_lock._load_hmac_key",
+                return_value=b"secret-key",
+            ),
+        ):
+            assert locker.has_logged_today() is False
+
     def test_other_day_logged(
         self,
         mock_tk: MagicMock,
diff --git a/scripts/pytest_changed_packages.py b/scripts/pytest_changed_packages.py
index b08a746..e2c0ae8 100755
--- a/scripts/pytest_changed_packages.py
+++ b/scripts/pytest_changed_packages.py
@@ -12,12 +12,10 @@ all tests are run as a fallback.
 from __future__ import annotations
 
 from pathlib import Path, PurePosixPath
-import shutil
 import subprocess
 import sys
 
 _MIN_SUBPACKAGE_DEPTH = 2
-_MEMORY_CAP = "3G"
 
 
 def _affected_packages(files: list[str]) -> set[str] | None:
@@ -90,19 +88,8 @@ def main() -> int:
         return 0
 
     # Run each package in its own subprocess so memory is freed between runs.
-    # Wrap in systemd-run cgroup to hard-cap memory per package.
-    use_cgroup = shutil.which("systemd-run") is not None
     for pkg in sorted(packages):
         cmd = _build_pytest_command({pkg})
-        if use_cgroup:
-            cmd = [
-                "systemd-run",
-                "--user",
-                "--scope",
-                "-p",
-                f"MemoryMax={_MEMORY_CAP}",
-                *cmd,
-            ]
         result = subprocess.run(cmd, check=False)
         if result.returncode != 0:
             return result.returncode