fix(agents): harden shell adapter bridge and address double-check review feedback

- create_session.sh: add explicit case fallback for delegate_agent (R1)
- lib_py.agents: add spawn-spec, resume-spec, exit-key argv CLI subcommands (R2)
- resume_session.sh, stop_session.sh: replace python string interpolation with safe argv subcommands (R2)
- stop_session.sh: dynamically iterate adapter.identity_cache_fields (R3)
- verify_session.py, workspace_uuid.py: remove dead imports (R9/N4)
- tests/test_a4_adapter_contract.py: add CLI bridge subcommand, clean-env PYTHONPATH safety, and fallback contract tests (R12/N1)
- SKILL.md, docs, logs: synchronize IMPROVEMENTS.md, LOG.md, and resolve_session_id wording (R8/R10/R11)
- promote verified peer review reports for cline (e7b9812b) and claude (31730364)

.agents/skills/lib_py/workspace_uuid.py

@@ -1,8 +1,8 @@
 # workspace_uuid.py — workspace UUID discovery logic
 # Extracted from lib.sh find_workspace_uuid PYEOF block
 
-import os, sys, json, glob, sqlite3
-from lib_py.verify_session import verify_session_uuid, workspace_key, mam_orchestrator_uuids, mam_row_own_uuid
+import os, sys, json, sqlite3
+from lib_py.verify_session import verify_session_uuid, mam_orchestrator_uuids, mam_row_own_uuid
 
 OWN_KEY = {
     'claude': 'claude_session_id_own',