test: real-pair check imports the replay tools lazily — one test file serves both trees

The suppression test rides upstream slice cnighswonger#272, which carries the
extension but not tools/; a static import made the whole file error
there. The real-pair test already skips without the capture — the same
skip now covers a tree without the tooling.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TZxGrF1LRBvmb7cFXmS2DH

Author: Gunther-Schulz

test/insertion-suppression.test.mjs

@@ -35,7 +35,6 @@ import {
   pinnedBlockHashes,
   findSuppressibleDuplicate,
 } from "../proxy/extensions/insertion-normalization.mjs";
-import { findMitigationGaps, findSafetyViolations, safetyViolation, readCapture } from "../tools/replay.mjs";
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 const REPO = join(__dirname, "..");
@@ -264,6 +263,17 @@ test(
       return;
     }
 
+    // The census/gate helpers ship in the tools slice; in a tree carrying
+    // only the extension (upstream PR #272) this check rides #276 instead.
+    let replayTools;
+    try {
+      replayTools = await import("../tools/replay.mjs");
+    } catch {
+      t.skip("tools/replay.mjs not in this tree — the real-pair check runs where the tools land");
+      return;
+    }
+    const { findMitigationGaps, findSafetyViolations, safetyViolation, readCapture } = replayTools;
+
     const scratch = await mkdtemp(join(tmpdir(), "insertion-suppression-"));
     const saved = {};
     const overrides = { CLAUDE_CONFIG_DIR: scratch, ...GATES };