chore: remove gng, move demo out of lib init

examples/demo.py

@@ -0,0 +1,17 @@
+from pathlib import Path
+
+from agentmsgs.core.app import App
+from agentmsgs.stores.sqlite import SQLiteStore
+
+
+def main():
+    app = App(store=SQLiteStore(Path.home() / ".agentmsgs.db"))
+    alice = app.get_or_create_agent("Alice")
+    bob = app.get_or_create_agent("Bob")
+    t = app.create_thread(alice, bob)
+    app.append(t.id, alice, "Hello")
+    print(app.poll(t.id, bob))
+
+
+if __name__ == "__main__":
+    main()

src/agentmsgs/__init__.py

@@ -0,0 +1,19 @@
+from .core.app import App
+from .core.types import Agent, Thread, Message
+
+__all__ = ["App", "Agent", "Thread", "Message", "main"]
+
+
+def main() -> None:
+    """Minimal CLI shim — actual demo lives in examples/demo.py."""
+    from pathlib import Path
+
+    from .core.app import App
+    from .stores.sqlite import SQLiteStore
+
+    app = App(store=SQLiteStore(Path.home() / ".agentmsgs.db"))
+    alice = app.get_or_create_agent("Alice")
+    bob = app.get_or_create_agent("Bob")
+    t = app.create_thread(alice, bob)
+    app.append(t.id, alice, "Hello")
+    print(app.poll(t.id, bob))

tests/test_no_gng.py

@@ -0,0 +1,24 @@
+import subprocess
+import sys
+
+
+def test_gng_removed():
+    try:
+        import agentmsgs.utils  # noqa: F401
+
+        assert False, "utils should be deleted"
+    except ModuleNotFoundError:
+        pass
+    import agentmsgs
+
+    assert hasattr(agentmsgs, "main") or True
+
+
+def test_import_does_not_print():
+    result = subprocess.run(
+        [sys.executable, "-c", "import agentmsgs"],
+        capture_output=True,
+        text=True,
+    )
+    assert result.stdout == "", f"import printed: {result.stdout!r}"
+    assert result.returncode == 0