diff --git a/core/automation/blocks.py b/core/automation/blocks.py
index 474f375e..7705fe6e 100644
--- a/core/automation/blocks.py
+++ b/core/automation/blocks.py
@@ -274,6 +274,8 @@ ACTIONS: list[dict] = [
      "description": "Remove old searches from Soulseek", "available": True},
     {"type": "video_clean_completed_downloads", "label": "Clean Completed Downloads", "icon": "check-square", "scope": "video",
      "description": "Clear completed downloads and empty directories", "available": True},
+    {"type": "video_full_cleanup", "label": "Full Cleanup", "icon": "trash", "scope": "video",
+     "description": "Clear quarantine, download queue, import folder, and search history in one sweep", "available": True},
 ]
 
 
diff --git a/core/automation/handlers/registration.py b/core/automation/handlers/registration.py
index f9fa9c1d..f9262b24 100644
--- a/core/automation/handlers/registration.py
+++ b/core/automation/handlers/registration.py
@@ -164,6 +164,10 @@ def register_all(deps: AutomationDeps) -> None:
         'video_clean_completed_downloads',
         lambda config: auto_clean_completed_downloads(config, deps),
     )
+    engine.register_action_handler(
+        'video_full_cleanup',
+        lambda config: auto_full_cleanup(config, deps),
+    )
     engine.register_action_handler(
         'clean_completed_downloads',
         lambda config: auto_clean_completed_downloads(config, deps),
diff --git a/core/automation_engine.py b/core/automation_engine.py
index 7f01bae4..90d58769 100644
--- a/core/automation_engine.py
+++ b/core/automation_engine.py
@@ -201,6 +201,14 @@ SYSTEM_AUTOMATIONS = [
         'initial_delay': 300,
         'owned_by': 'video',
     },
+    {
+        'name': 'Full Cleanup',
+        'trigger_type': 'schedule',
+        'trigger_config': {'interval': 12, 'unit': 'hours'},
+        'action_type': 'video_full_cleanup',
+        'initial_delay': 900,
+        'owned_by': 'video',
+    },
     # Video twin of music's 'Auto-Deep Scan Library', split into TWO because Movies
     # and TV are independent libraries — a TV scan never pulls in new movies and
     # vice-versa. Fixed weekly deep scan (re-read + prune removed) at 02:00 server-
diff --git a/tests/automation/test_handler_registration.py b/tests/automation/test_handler_registration.py
index 9a220239..6ad8c2b0 100644
--- a/tests/automation/test_handler_registration.py
+++ b/tests/automation/test_handler_registration.py
@@ -62,6 +62,7 @@ EXPECTED_ACTION_NAMES = frozenset({
     'video_add_airing_episodes',
     'video_clean_search_history',
     'video_clean_completed_downloads',
+    'video_full_cleanup',
 })
 
 # Action names that MUST register a guard (duplicate-run prevention).
diff --git a/tests/automation/test_video_maintenance_twins.py b/tests/automation/test_video_maintenance_twins.py
index b2af55b3..5369d5c8 100644
--- a/tests/automation/test_video_maintenance_twins.py
+++ b/tests/automation/test_video_maintenance_twins.py
@@ -92,3 +92,24 @@ def test_video_clean_completed_downloads_reuses_the_music_handler():
     handlers = _registered_handlers()
     assert "video_clean_completed_downloads" in handlers
     assert "clean_completed_downloads" in handlers
+
+
+# ── Phase 4: Full Cleanup ───────────────────────────────────────────────────
+
+def test_video_full_cleanup_is_video_scoped_only():
+    assert "video_full_cleanup" in _action_types("video")
+    assert "video_full_cleanup" not in _action_types("music")
+    assert "full_cleanup" in _action_types("music")
+    assert "full_cleanup" not in _action_types("video")
+
+
+def test_video_full_cleanup_seeds_one_video_owned_system_row():
+    rows = _system_by_action("video_full_cleanup")
+    assert len(rows) == 1 and rows[0]["owned_by"] == "video"
+    assert rows[0]["trigger_config"] == {"interval": 12, "unit": "hours"}
+
+
+def test_video_full_cleanup_reuses_the_music_handler():
+    handlers = _registered_handlers()
+    assert "video_full_cleanup" in handlers
+    assert "full_cleanup" in handlers