fix(ci): resolve all ruff E/F lint errors (CI was red on every run)

- F401: remove unused imports (agent_loop cybernetic controllers, input_handler time, etc.)
- F821: add TYPE_CHECKING-guarded type imports (Store/AppState, SystemState,
  AgentMetricsCollector, ContextCyberneticsOrchestrator) — annotation-only, no runtime/circular-import impact
- F841: remove dead local assignments in agent_loop
- E741: rename ambiguous 'l' loop vars to 'line'/'part'

CI ruff step (ruff check --select=E,F) now passes; full suite green (1150 passed).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: QUSETIONS

conftest.py

@@ -5,6 +5,10 @@
 import pytest
 
 
+def pytest_configure(config: pytest.Config) -> None:
+    config.addinivalue_line("markers", "benchmark: mark test as a benchmark test.")
+
+
 # These root-level scripts are manual smoke/integration utilities from earlier
 # development rounds. Normal pytest coverage lives under tests/.
 collect_ignore = [

minicode/agent_intelligence.py

@@ -3,6 +3,11 @@
 from typing import Any
 
 
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from minicode.agent_metrics import AgentMetricsCollector
+
 class ErrorCategory(Enum):
     NETWORK = "network"
     PERMISSION = "permission"