Teach the autonomy-override doubles the turn_request kwarg

[Parad0x-Labs]

What failed

tests/test_autonomy_override.py — 2 of 5 cases red in the main CI census (run 35570948370)
and every PR run since; deterministic locally:

• test_run_once_puts_override_in_force_then_resets
• test_run_once_resets_override_even_on_exception

Both with TypeError: fake_inner() got an unexpected keyword argument 'turn_request' at
core/agent_runtime/agent.py:1619.

Root cause

run_once forwards the served turn's request identity to _run_once_inner as a
turn_request keyword (present since the public root 78f818b; the real _run_once_inner
at agent.py:1842 takes it). The suite's two lifecycle doubles still carry the older
three-parameter signature (user_input, session_id_override, source_context), so the
doubles die with TypeError before the override-in-force / reset-on-exception assertions
can run. The suite landed with the public tree and never caught up.

Repair (test-only, one file)

The doubles accept turn_request=None. The override lifecycle under test — the composer's
auto in force during the turn, reset in finally, reset even on exception — is unchanged;
no assertion touched.

Validation

• Target suite: 2 failed → 5 passed.
• CI census count for this file: exactly these 2 (main 35570948370).
• Neighbors (test_one_intent_one_declaration, test_operator_actions,
  test_git_command_gate): 73 passed together with the repaired suite.
• ruff check . clean (pinned 0.16.7).

Base: main 8153a96. One file changed (tests/test_autonomy_override.py, +6/−2).