feat(lib): implement A-4 M0~M1 BaseAgentAdapter pattern and resolve_home contract

.agents/skills/lib_py/workspace_uuid.py

@@ -15,10 +15,12 @@ def iso_root_of(s):
     iso = s.get('isolation')
     return iso.get('root') if isinstance(iso, dict) else None
 
+from lib_py.paths import resolve_home
+
 def find_workspace_uuid_main():
     ws = os.environ['WS_ABS']
     agent = os.environ['AGENT']
-    home = os.environ['HOME_DIR']
+    home = resolve_home()
     claude_project_dir = os.environ.get('CLAUDE_PROJECT_DIR', f"{home}/.claude/projects")
     target = os.environ.get('TARGET_SESSION', '')