checkpoint: finished test curation

tests.toml

@@ -3,7 +3,6 @@
 [categories.core]
 description = "Manual Slop Core and GUI tests"
 files = [
-    "tests/test_ai_context_history.py",
     "tests/test_api_events.py",
     "tests/test_gui_diagnostics.py",
     "tests/test_gui_events.py",
@@ -15,14 +14,8 @@ files = [
     "tests/test_gui2_mcp.py",
     "tests/test_gui2_parity.py",
     "tests/test_gui2_performance.py",
-    "tests/test_headless_api.py",
-    "tests/test_headless_dependencies.py",
-    "tests/test_headless_startup.py",
-    "tests/test_history_blacklist.py",
-    "tests/test_history_bleed.py",
-    "tests/test_history_migration.py",
-    "tests/test_history_persistence.py",
-    "tests/test_history_truncation.py",
+    "tests/test_history_management.py",
+    "tests/test_headless_service.py",
     "tests/test_performance_monitor.py",
     "tests/test_token_usage.py",
     "tests/test_layout_reorganization.py"