diff --git a/convex/canonicalTrending.test.ts b/convex/canonicalTrending.test.ts
index 3369105c..3c8f5dc2 100644
--- a/convex/canonicalTrending.test.ts
+++ b/convex/canonicalTrending.test.ts
@@ -552,6 +552,39 @@ describe("canonical Trending snapshot storage", () => {
     ).toEqual({ status: "unavailable" });
   });
 
+  it("returns the current native-only snapshot for guarded preflight reuse", async () => {
+    const t = convexTest(schema, modules);
+    const now = Date.now();
+    await t.mutation(internal.canonicalTrending.startSnapshotInternal, {
+      snapshotId: "skills-native-preflight-ready",
+      generatedAt: now - 1_000,
+      expiresAt: now + 24 * 60 * 60 * 1_000,
+      windowStartDay: 40,
+      windowEndDay: 40,
+    });
+    await t.mutation(internal.canonicalTrending.finalizeSnapshotInternal, {
+      snapshotId: "skills-native-preflight-ready",
+      completedAt: now - 500,
+      totalItems: 0,
+      sourceCounts: { clawhubTrending: 3, clawhubRising: 2, skillsShTrending: 0 },
+      operations: { documentsRead: 10, documentsWritten: 2, functionCalls: 3 },
+    });
+
+    await expect(
+      t.query(internal.canonicalTrending.getReadyNativeSnapshotInternal, { now }),
+    ).resolves.toEqual({
+      status: "ready",
+      snapshotId: "skills-native-preflight-ready",
+      generatedAt: new Date(now - 1_000).toISOString(),
+      windowHours: 24,
+      rankingVersion: "skills-trending-v2",
+      totalItems: 0,
+      sourceCounts: { clawhubTrending: 3, clawhubRising: 2, skillsShTrending: 0 },
+      operations: { documentsRead: 10, documentsWritten: 2, functionCalls: 3 },
+      reused: true,
+    });
+  });
+
   it("never serves a snapshot produced by the legacy ranking algorithm", async () => {
     const t = convexTest(schema, modules);
     const now = Date.now();
diff --git a/convex/canonicalTrending.ts b/convex/canonicalTrending.ts
index a1a6d077..0f05ce86 100644
--- a/convex/canonicalTrending.ts
+++ b/convex/canonicalTrending.ts
@@ -705,6 +705,41 @@ export const materializeInternal = internalAction({
   },
 });
 
+export const getReadyNativeSnapshotInternal = internalQuery({
+  args: { now: v.number() },
+  handler: async (ctx, args) => {
+    const snapshot = await ctx.db
+      .query("canonicalTrendingSnapshots")
+      .withIndex("by_kind_and_status_and_expires_at", (q) =>
+        q.eq("kind", "skills").eq("status", "ready").gt("expiresAt", args.now),
+      )
+      .order("desc")
+      .first();
+    if (
+      !snapshot ||
+      snapshot.generatedAt + SNAPSHOT_MAX_SERVING_AGE_MS <= args.now ||
+      snapshot.rankingVersion !== CANONICAL_TRENDING_RANKING_VERSION ||
+      snapshot.totalItems === undefined ||
+      !snapshot.sourceCounts ||
+      snapshot.sourceCounts.skillsShTrending !== 0 ||
+      !snapshot.operations
+    ) {
+      return null;
+    }
+    return {
+      status: "ready" as const,
+      snapshotId: snapshot.snapshotId,
+      generatedAt: new Date(snapshot.generatedAt).toISOString(),
+      windowHours: snapshot.windowHours,
+      rankingVersion: snapshot.rankingVersion,
+      totalItems: snapshot.totalItems,
+      sourceCounts: snapshot.sourceCounts,
+      operations: snapshot.operations,
+      reused: true as const,
+    };
+  },
+});
+
 export const getPageInternal = internalQuery({
   args: {
     cursor: v.union(v.string(), v.null()),
diff --git a/convex/skillsShMirrorVisibility.test.ts b/convex/skillsShMirrorVisibility.test.ts
index 52bf0c8a..6df3f1c5 100644
--- a/convex/skillsShMirrorVisibility.test.ts
+++ b/convex/skillsShMirrorVisibility.test.ts
@@ -616,6 +616,52 @@ describe("skills.sh mirror visibility operations", () => {
     ).rejects.toThrow("skills.sh mirror control is not active");
   });
 
+  it("reuses a fresh native-only snapshot instead of rematerializing preflight", async () => {
+    const t = convexTest(schema, modules);
+    const now = Date.now();
+    await t.mutation(internal.canonicalTrending.startSnapshotInternal, {
+      snapshotId: "skills-native-preflight-existing",
+      generatedAt: now - 1_000,
+      expiresAt: now + 24 * 60 * 60 * 1_000,
+      windowStartDay: 40,
+      windowEndDay: 40,
+    });
+    await t.mutation(internal.canonicalTrending.finalizeSnapshotInternal, {
+      snapshotId: "skills-native-preflight-existing",
+      completedAt: now - 500,
+      totalItems: 0,
+      sourceCounts: { clawhubTrending: 3, clawhubRising: 2, skillsShTrending: 0 },
+      operations: { documentsRead: 10, documentsWritten: 2, functionCalls: 3 },
+    });
+
+    await expect(
+      t.action(internal.skillsShMirrorVisibility.prepareNativeTrendingInternal, {
+        actor: "codex-test",
+        reason: "reuse current native-only Trending",
+        confirm: "deactivate-skills-sh-public-test",
+      }),
+    ).resolves.toMatchObject({
+      ok: true,
+      nativeTrending: {
+        status: "ready",
+        snapshotId: "skills-native-preflight-existing",
+        sourceCounts: { skillsShTrending: 0 },
+        reused: true,
+      },
+    });
+    const state = await t.run(async (ctx) => ({
+      snapshots: await ctx.db.query("canonicalTrendingSnapshots").collect(),
+      control: await ctx.db
+        .query("skillsShMirrorControls")
+        .withIndex("by_key", (q) => q.eq("key", "global"))
+        .unique(),
+    }));
+    expect(state).toMatchObject({
+      snapshots: [expect.objectContaining({ snapshotId: "skills-native-preflight-existing" })],
+    });
+    expect(state.control?.activationLockToken).toBeUndefined();
+  });
+
   it("rejects a completed Trending run older than the selected leaderboard import", async () => {
     const t = convexTest(schema, modules);
     await t.run(async (ctx) => {
diff --git a/convex/skillsShMirrorVisibility.ts b/convex/skillsShMirrorVisibility.ts
index ab555496..49d457ed 100644
--- a/convex/skillsShMirrorVisibility.ts
+++ b/convex/skillsShMirrorVisibility.ts
@@ -18,7 +18,7 @@ const MAX_ROWS = 50_000;
 const ACTIVATION_LOCK_LEASE_MS = 15 * 60_000;
 
 const internalRefs = internal as unknown as {
-  canonicalTrending: { materializeInternal: unknown };
+  canonicalTrending: { getReadyNativeSnapshotInternal: unknown; materializeInternal: unknown };
   skillsShMirrorVisibility: {
     beginActivationInternal: unknown;
     beginDeactivationInternal: unknown;
@@ -499,7 +499,22 @@ export const beginNativeTrendingInternal = internalMutation({
   },
 });
 
-async function materializeNativeTrending(ctx: Pick<ActionCtx, "runAction">, lockToken: string) {
+async function materializeNativeTrending(
+  ctx: Pick<ActionCtx, "runAction" | "runQuery">,
+  lockToken: string,
+) {
+  const reusable = (await ctx.runQuery(
+    internalRefs.canonicalTrending.getReadyNativeSnapshotInternal as never,
+    { now: Date.now() } as never,
+  )) as {
+    status: "ready";
+    snapshotId: string;
+    sourceCounts: { clawhubTrending: number; clawhubRising: number; skillsShTrending: 0 };
+    reused: true;
+  } | null;
+  // Native-only data is independent of skills.sh run chronology. The activation path
+  // always materializes its mixed snapshot after verifying the exact imported runs.
+  if (reusable) return reusable;
   const nativeTrending = (await ctx.runAction(
     internalRefs.canonicalTrending.materializeInternal as never,
     { activationLockToken: lockToken, skillsShMode: "native-only" } as never,
@@ -515,7 +530,7 @@ async function materializeNativeTrending(ctx: Pick<ActionCtx, "runAction">, lock
 }
 
 async function materializeNativeTrendingWithLock(
-  ctx: Pick<ActionCtx, "runAction" | "runMutation">,
+  ctx: Pick<ActionCtx, "runAction" | "runMutation" | "runQuery">,
   args: { actor: string; reason: string; confirm: string },
 ) {
   const lockToken = `skills-sh-native-trending:${crypto.randomUUID()}`;