fix: multiple test-workflow bugs — draft wipe, dark date pickers, Jira status strings, Tempo gate, hold timer

- Fix the red/blue draft form losing unsaved fields (e.g. execution_start_time) whenever an evidence upload refetches the test — the hydration effect now runs once per test, not on every refetch.
- Add color-scheme: dark so native date/time picker popups match the app theme instead of rendering white.
- Fix _STATE_TO_JIRA_STATUS: real Jira statuses are 'To Do' and 'Red Team test review', not 'To-Do' and 'RT Test Review' — confirmed live against the actual workflow transitions, which is why Submit to Blue Team never moved the ticket past 'In Progress'.
- Tempo worklog sync was silently blocked by TEMPO_ENABLED defaulting to False with no admin-facing toggle, even after configuring a Tempo token via Settings. Now bypassed once an admin or personal token is actually configured, mirroring Jira's DB-backed enabled flag.
- Hold now actually pauses the running phase timer (paused_at), and Resume accumulates the held duration into red/blue_paused_seconds — previously the timer kept counting through a hold.

backend/app/routers/tests.py

@@ -1354,6 +1354,10 @@ def hold_test(
     test.hold_reason = payload.reason
     test.held_at = _dt.utcnow()
 
+    # A running phase timer must stop counting while on hold.
+    if test.state in (TestState.red_executing, TestState.blue_evaluating) and test.paused_at is None:
+        test.paused_at = test.held_at
+
     log_action(db, current_user.id, "hold_test", str(test_id), {"reason": payload.reason})
     db.commit()
     db.refresh(test)
@@ -1375,6 +1379,7 @@ def resume_test(
     current_user: User = Depends(require_any_role_strict("red_tech", "blue_tech")),
 ):
     """Resume a test that was placed on hold."""
+    from datetime import datetime as _dt
     from app.services.jira_service import push_hold_event
 
     test = crud_get_test_or_raise(db, test_id)
@@ -1386,6 +1391,16 @@ def resume_test(
     test.hold_reason = None
     test.held_at = None
 
+    # Resume the phase timer that hold_test paused, accumulating the held
+    # duration the same way pause/resume-timer does.
+    if test.paused_at is not None:
+        held_seconds = max(int((_dt.utcnow() - test.paused_at).total_seconds()), 0)
+        if test.state == TestState.red_executing:
+            test.red_paused_seconds = (test.red_paused_seconds or 0) + held_seconds
+        elif test.state == TestState.blue_evaluating:
+            test.blue_paused_seconds = (test.blue_paused_seconds or 0) + held_seconds
+        test.paused_at = None
+
     log_action(db, current_user.id, "resume_test", str(test_id), {})
     db.commit()
     db.refresh(test)