chore: ruff auto-fix PLR6201 — tuple → set in membership tests (#23937)

Replace  with  for all literal-tuple
membership tests. Set lookup is O(1) vs O(n) for tuple — consistent
micro-optimization across the codebase.

608 instances fixed via `ruff --fix --unsafe-fixes`, 0 remaining.
133 files, +626/-626 (net zero).

environments/agentic_opd_env.py

@@ -264,7 +264,7 @@ def _parse_hint_result(text: str) -> tuple[int | None, str]:
     """Parse the judge's boxed decision and hint text."""
     boxed = _BOXED_RE.findall(text)
     score = int(boxed[-1]) if boxed else None
-    if score not in (1, -1):
+    if score not in {1, -1}:
         score = None
     hint_matches = _HINT_RE.findall(text)
     hint = hint_matches[-1].strip() if hint_matches else ""

environments/benchmarks/terminalbench_2/terminalbench2_env.py

@@ -162,7 +162,7 @@ def _normalize_tar_member_parts(member_name: str) -> list:
     ):
         raise ValueError(f"Unsafe archive member path: {member_name}")
 
-    parts = [part for part in posix_path.parts if part not in ("", ".")]
+    parts = [part for part in posix_path.parts if part not in {"", "."}]
     if not parts or any(part == ".." for part in parts):
         raise ValueError(f"Unsafe archive member path: {member_name}")
     return parts
@@ -561,7 +561,7 @@ class TerminalBench2EvalEnv(HermesAgentBaseEnv):
             # --- 5. Verify -- run test suite in the agent's sandbox ---
             # Skip verification if the agent produced no meaningful output
             only_system_and_user = all(
-                msg.get("role") in ("system", "user") for msg in result.messages
+                msg.get("role") in {"system", "user"} for msg in result.messages
             )
             if result.turns_used == 0 or only_system_and_user:
                 logger.warning(

environments/hermes_base_env.py

@@ -571,7 +571,7 @@ class HermesAgentBaseEnv(BaseEnv):
         # (e.g., API call failed on turn 1). No point spinning up a Modal sandbox
         # just to verify files that were never created.
         only_system_and_user = all(
-            msg.get("role") in ("system", "user") for msg in result.messages
+            msg.get("role") in {"system", "user"} for msg in result.messages
         )
         if result.turns_used == 0 or only_system_and_user:
             logger.warning(

environments/tool_context.py

@@ -179,7 +179,7 @@ class ToolContext:
 
         # Ensure parent directory exists in the sandbox
         parent = str(_Path(remote_path).parent)
-        if parent not in (".", "/"):
+        if parent not in {".", "/"}:
             self.terminal(f"mkdir -p {parent}", timeout=10)
 
         # For small files, single command is fine