chore: import upstream snapshot with attribution

tests/test_gateway/test_chat_meta_command_static.py

@@ -0,0 +1,39 @@
+"""Static contract for the web ``/meta`` slash-command wiring.
+
+The served web UI is the Vite SPA under ``opensquilla-webui/``; its slash
+dispatch lives in ``composables/chat/useChatSlashCommands.ts``. JS/TS is not
+unit-tested with a JS runner here, so we lock the SPA source text:
+
+- meta-skills are offered as Tab-completable **argument candidates** in the
+  slash menu (not a toast), via the command's ``argumentChoices``;
+- selecting ``/meta <skill>`` runs it through ``meta.run`` + a hidden turn.
+
+(The legacy ``static/js/views/chat.js`` is NOT served, so it is not the file
+under test.)
+"""
+
+from pathlib import Path
+
+SPA_SLASH = Path("opensquilla-webui/src/composables/chat/useChatSlashCommands.ts")
+
+
+def _read() -> str:
+    return SPA_SLASH.read_text(encoding="utf-8")
+
+
+def test_slash_menu_supports_argument_completion() -> None:
+    text = _read()
+    # The menu offers a command's argument choices as selectable candidates.
+    assert "argumentChoices" in text, "slash menu must read per-command argumentChoices"
+    assert "makeArgCandidate" in text, "argument choices must become selectable menu candidates"
+    assert "argValue" in text, "selecting an argument candidate must complete it into the composer"
+
+
+def test_meta_run_path_uses_meta_run_rpc() -> None:
+    text = _read()
+    marker = "case 'meta.menu':"
+    assert marker in text, "missing meta.menu case in selectSlashCmd"
+    body = text[text.index(marker):]
+    assert "meta.run" in body, "running a chosen meta-skill must call the meta.run RPC"
+    assert "sessionKey" in body, "meta.run must pass the session key"
+    assert "dispatchHidden" in body, "running a meta-skill must trigger a turn via dispatchHidden"