fix(tui): establish 2-tier readiness model, modal/hint token separation, and adapter modal contracts

- Separate TUI dialog detection into blocking gate layer (_MAM_MODAL_TOKENS) and recovery layer (_MAM_HINT_TOKENS) to eliminate idle dialog starvation
- Add modal_tokens contract across agent adapters (claude, cline) with dynamic scope facts resolution in send_keys_safe
- Implement fail-closed resolution for ambiguous same-kind panes (R-1) and enforce WORKSPACE_ROOT export (R-2)
- Preserve session on TUI readiness timeout when PID is alive for diagnostics
- Add comprehensive test suite in tests/test_c1_tui_readiness.py and adapter contract assertions in test_a4

.agents/skills/lib_py/agents/__main__.py

@@ -23,6 +23,9 @@ def main():
         print(f"MAM_INPUT_PLACEHOLDER={q(adapter.input_placeholder or '')}")
         print(f"MAM_INPUT_RULE_PATTERN={q(adapter.input_rule_pattern or '')}")
         print(f"MAM_READY_TOKENS={q(adapter.ready_tokens)}")
+        print(f"MAM_STRONG_READY_TOKENS={q(adapter.strong_ready_tokens)}")
+        print(f"MAM_WEAK_READY_TOKENS={q(adapter.weak_ready_tokens)}")
+        print(f"MAM_MODAL_TOKENS={q(adapter.modal_tokens or '')}")
         print(f"MAM_EXIT_KEY={q(adapter.exit_key)}")
         print(f"MAM_DELEGATE_AGENT_KEY={q(adapter.delegate_agent_key)}")