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

.agents/skills/lib_py/agents/adapters/__init__.py

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+# Adapters package init

.agents/skills/lib_py/agents/adapters/agy.py

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+# agy.py — Antigravity (agy) agent adapter
+
+from lib_py.agents.base import BaseAgentAdapter
+
+class AgyAgentAdapter(BaseAgentAdapter):
+    @property
+    def name(self) -> str:
+        return 'agy'
+
+    @property
+    def own_key(self) -> str:
+        return 'agy_conversation_id_own'

.agents/skills/lib_py/agents/adapters/claude.py

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+# claude.py — Claude Code agent adapter
+
+from lib_py.agents.base import BaseAgentAdapter
+
+class ClaudeAgentAdapter(BaseAgentAdapter):
+    @property
+    def name(self) -> str:
+        return 'claude'
+
+    @property
+    def own_key(self) -> str:
+        return 'claude_session_id_own'

.agents/skills/lib_py/agents/adapters/cline.py

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+# cline.py — Cline agent adapter
+
+from lib_py.agents.base import BaseAgentAdapter
+
+class ClineAgentAdapter(BaseAgentAdapter):
+    @property
+    def name(self) -> str:
+        return 'cline'
+
+    @property
+    def own_key(self) -> str:
+        return 'cline_conversation_id_own'

.agents/skills/lib_py/agents/adapters/hermes.py

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+# hermes.py — Hermes agent adapter
+
+from lib_py.agents.base import BaseAgentAdapter
+
+class HermesAgentAdapter(BaseAgentAdapter):
+    @property
+    def name(self) -> str:
+        return 'hermes'
+
+    @property
+    def own_key(self) -> str:
+        return 'hermes_conversation_id_own'