test(audit): fix critical test suite deadlocks and write exhaustive architectural report

- Fix 'Triple Bingo' history synchronization explosion during streaming

- Implement stateless event buffering in ApiHookClient to prevent dropped events

- Ensure 'tool_execution' events emit consistently across all LLM providers

- Add hard timeouts to all background thread wait() conditions

- Add thorough teardown cleanup to conftest.py's reset_ai_client fixture

- Write highly detailed report_gemini.md exposing asyncio lifecycle flaws

tests/test_gemini_cli_edge_cases.py

@@ -56,7 +56,8 @@ def test_gemini_cli_parameter_resilience(live_gui: Any) -> None:
     """
  client = ApiHookClient("http://127.0.0.1:8999")
  client.click("btn_reset")
- time.sleep(1.5)
+ time.sleep(1.0)
+
  client.set_value("auto_add_history", True)
  client.set_value("manual_approve", True)
  client.select_list_item("proj_files", "manual_slop")
@@ -130,7 +131,8 @@ def test_gemini_cli_loop_termination(live_gui: Any) -> None:
     """
  client = ApiHookClient("http://127.0.0.1:8999")
  client.click("btn_reset")
- time.sleep(1.5)
+ time.sleep(1.0)
+
  client.set_value("auto_add_history", True)
  client.set_value("manual_approve", True)
  client.select_list_item("proj_files", "manual_slop")