feat: prepare 2.2.0 with UI and execution fixes

Add dark theme, richer Markdown and readable plugin results.
Improve Android input evidence, response integrity and diagnostics.
Unify lifecycle, guidance receipts and evidence sources across clients.
Keep direct action dispatch without an added AI quota approval layer.
Align version metadata at 2.2.0 and bundle Helper 1.2.2.

Validation: 3063 backend tests before the version bump; 44 after.
Frontend: 317 tests and production build passed.

tests/unit/agents/test_operator.py

@@ -19,6 +19,7 @@ from artemis.agents.operator.operator import OperatorNode
 from artemis.config.agent import MemoryTranscriptConfig
 from artemis.context import ArtemisContext
 from artemis.core.tool_failure import ToolFailure
+from artemis.utils.action_target import observation_anchor
 import pytest
 
 # These tests exercise the legacy 2-message prompt path. Since M5 the
@@ -126,6 +127,8 @@ async def test_perform_action_validation():
             "target_bounds": "[100,100][300,500]",
             "target_resource_id": "btn_1",
             "target_class": "android.widget.Button",
+            "target_index": 1,
+            **observation_anchor(mock_state),
         }
     ]
 
@@ -156,6 +159,8 @@ async def test_perform_action_validation():
         "target_bounds": "[300,400][500,600]",
         "target_resource_id": "input_1",
         "target_class": "android.widget.EditText",
+        "target_index": 2,
+        **observation_anchor(mock_state),
     }
 
     # Test swipe direction
@@ -184,6 +189,8 @@ async def test_perform_action_validation():
             "target_bounds": "[300,400][500,600]",
             "target_resource_id": "input_1",
             "target_class": "android.widget.EditText",
+            "target_index": 2,
+            **observation_anchor(mock_state),
         }
     ]
 
@@ -290,6 +297,7 @@ async def test_coordinate_click_requires_and_records_the_models_description():
             "times": 1,
             "delay_ms": 100,
             "target_description": "play button",
+            **observation_anchor(mock_state),
         }
     ]
 
@@ -883,6 +891,8 @@ async def test_long_press_action_translation():
             "target_bounds": "[100,100][300,500]",
             "target_resource_id": "btn_1",
             "target_class": "android.widget.Button",
+            "target_index": 1,
+            **observation_anchor(mock_state),
         }
     ]
 
@@ -910,6 +920,7 @@ async def test_long_press_action_translation():
             "normalized_coordinates": [500, 600],
             "duration": 1000,
             "target_description": "app icon",
+            **observation_anchor(mock_state),
         }
     ]