From adeb195744a01d34eeecd839dc3aa229ad003d6c Mon Sep 17 00:00:00 2001
From: ghost <49853598+JSONbored@users.noreply.github.com>
Date: Sun, 21 Jun 2026 04:14:08 -0700
Subject: [PATCH] fix(scoring): surface snapshot warnings in previews

---
 src/scoring/preview.ts    |  2 +-
 test/unit/scoring.test.ts | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/scoring/preview.ts b/src/scoring/preview.ts
index e5dd4ebfc3..a901ed53b0 100644
--- a/src/scoring/preview.ts
+++ b/src/scoring/preview.ts
@@ -206,7 +206,7 @@ export function buildScorePreview(args: {
   const effectiveEstimatedScore = current.scoreEstimate.estimatedMergedScore;
   const underlyingPotentialScore = current.scoreEstimate.pendingSaturationScore;
   const scoreabilityStatus = statusFor(args.repo, blockedBy, effectiveEstimatedScore, scenarioPreviews);
-  const warnings = warningsFor(args.input, args.repo, current, branchEligibility);
+  const warnings = [...args.snapshot.warnings, ...warningsFor(args.input, args.repo, current, branchEligibility)];
   const actions = [
     ...(!current.gates.baseTokenGatePassed ? ["Increase meaningful source change size or scope clarity before relying on this preview."] : []),
     ...(current.scoreEstimate.openPrMultiplier === 0 ? ["Land or close existing open PRs before opening more concurrent work."] : []),
diff --git a/test/unit/scoring.test.ts b/test/unit/scoring.test.ts
index 1445bc85c4..040e12b78e 100644
--- a/test/unit/scoring.test.ts
+++ b/test/unit/scoring.test.ts
@@ -114,6 +114,17 @@ OSS_EMISSION_SHARE = 0.90
     expect(served.warnings.some((warning) => /stale/i.test(warning))).toBe(false);
   });
 
+  it("surfaces snapshot warnings in score previews (#810)", () => {
+    const warning = "Scoring constants snapshot is stale; preview scores may use old constants.";
+    const preview = buildScorePreview({
+      repo,
+      input: { repoFullName: repo.fullName, sourceTokenScore: 10 },
+      snapshot: { ...snapshot, warnings: [warning] },
+    });
+
+    expect(preview.warnings).toContain(warning);
+  });
+
   it("prefers exponential saturation when mixed upstream constants are present", () => {
     const parsed = parsePythonNumberConstants(`
 MERGED_PR_BASE_SCORE = 25