chore: ruff auto-fix PLR6201 resweep — tuple → set in membership tests (#27355)

Six days after #23937 (608 fixes) the codebase had accumulated 241 new
PLR6201 violations. Same mechanical `x in (...)` → `x in {...}` fix,
same zero-risk profile: set lookup is O(1) vs O(n) for tuple and the
two are semantically equivalent for hashable scalar membership tests.

All 241 instances fixed via `ruff check --select PLR6201 --fix
--unsafe-fixes`, zero remaining. Every changed value is a hashable
scalar (str/int/None/enum/signal); no risk of unhashable runtime
errors. No behavior change.

Test plan:
- 119 files changed, +244/-244 (net zero) — exactly one-line edits
- `ruff check` clean afterward
- Compile checks pass on the largest touched files (cli.py, run_agent.py,
  gateway/run.py, gateway/platforms/discord.py, model_tools.py)
- Subset broad test run on tests/gateway/ tests/hermes_cli/ tests/agent/
  tests/tools/: 18187 passed, 59 pre-existing failures (verified against
  origin/main with the same shape — identical failure count, identical
  category — all xdist test-order flakes unrelated to this change)

Follows the same template as PR #23937 ([tracker: #23972](https://github.com/NousResearch/hermes-agent/issues/23972)).

plugins/platforms/google_chat/adapter.py

@@ -1539,7 +1539,7 @@ class GoogleChatAdapter(BasePlatformAdapter):
         if sender_email and space_name:
             self._last_sender_by_chat[space_name] = sender_email.strip().lower()
 
-        chat_type = "dm" if space_type in ("DIRECT_MESSAGE", "DM") else "group"
+        chat_type = "dm" if space_type in {"DIRECT_MESSAGE", "DM"} else "group"
         text = msg.get("argumentText") or msg.get("text") or ""
         text = text.strip()
 
@@ -1935,7 +1935,7 @@ class GoogleChatAdapter(BasePlatformAdapter):
             return True
         except HttpError as exc:
             status = getattr(getattr(exc, "resp", None), "status", None)
-            if status in (403, 404):
+            if status in {403, 404}:
                 return False
             logger.debug(
                 "[GoogleChat] delete_message failed: %s",
@@ -1958,7 +1958,7 @@ class GoogleChatAdapter(BasePlatformAdapter):
         update_mask = ",".join(update_mask_fields) or "text"
 
         # Patch body cannot carry thread (immutable).
-        patch_body = {k: v for k, v in body.items() if k not in ("thread",)}
+        patch_body = {k: v for k, v in body.items() if k not in {"thread",}}
 
         def _do_patch() -> Dict[str, Any]:
             return (
@@ -2791,7 +2791,7 @@ class GoogleChatAdapter(BasePlatformAdapter):
             upload_resp = await asyncio.to_thread(_upload)
         except HttpError as exc:
             status = getattr(getattr(exc, "resp", None), "status", None)
-            if status in (401, 403):
+            if status in {401, 403}:
                 logger.warning(
                     "[GoogleChat] media.upload auth failure for identity=%s "
                     "(token revoked or scope missing) — falling back to "
@@ -2927,7 +2927,7 @@ class GoogleChatAdapter(BasePlatformAdapter):
         display = info.get("displayName") or chat_id
         return {
             "name": display,
-            "type": "dm" if space_type in ("DIRECT_MESSAGE", "DM") else "group",
+            "type": "dm" if space_type in {"DIRECT_MESSAGE", "DM"} else "group",
             "chat_id": chat_id,
         }