diff --git a/app/api/profile/generate-catalog-batch/route.ts b/app/api/profile/generate-catalog-batch/route.ts
index 05a31b7..a42f6f9 100644
--- a/app/api/profile/generate-catalog-batch/route.ts
+++ b/app/api/profile/generate-catalog-batch/route.ts
@@ -72,7 +72,8 @@ export async function POST(request: NextRequest) {
       string,
       unknown
     >;
-    const before = summarizeToolReadiness(stored, ALL_TOOL_SLUGS);
+    const profileHash = calculateProfileDataHash(userProfile);
+    const before = summarizeToolReadiness(stored, ALL_TOOL_SLUGS, profileHash);
     const toolStatus = (stored.toolStatus as PersistedToolStatusMap | undefined) ?? {};
     if (before.allReportsReady) {
       return NextResponse.json({
@@ -103,7 +104,6 @@ export async function POST(request: NextRequest) {
       });
     }
 
-    const profileHash = calculateProfileDataHash(userProfile);
     const result = await generateAndPersistToolReports({
       uid,
       profile: { ...userProfile, uid },
@@ -112,7 +112,7 @@ export async function POST(request: NextRequest) {
       skipVedicComprehensive: false,
     });
 
-    const readiness = result.readiness ?? summarizeToolReadiness(stored, ALL_TOOL_SLUGS);
+    const readiness = result.readiness ?? summarizeToolReadiness(stored, ALL_TOOL_SLUGS, profileHash);
     const next = selectRunnableCatalogSlugs(
       readiness.pendingToolSlugs,
       result.toolStatus ?? toolStatus,
diff --git a/app/api/profile/generate-mystical/route.ts b/app/api/profile/generate-mystical/route.ts
index ea6177d..fbc8a10 100644
--- a/app/api/profile/generate-mystical/route.ts
+++ b/app/api/profile/generate-mystical/route.ts
@@ -295,7 +295,7 @@ export async function POST(request: NextRequest) {
     if (hashMatches) {
       const stored = await getDocument('comprehensiveMysticalProfiles', uid);
       const storedProfile = (stored || {}) as Record<string, unknown>;
-      const readiness = summarizeToolReadiness(storedProfile, ALL_TOOL_SLUGS);
+      const readiness = summarizeToolReadiness(storedProfile, ALL_TOOL_SLUGS, effectiveHash);
       if (readiness.allReportsReady) {
         const auditId = await writeRegenDecisionTelemetry(uid, {
           event: 'mystical_regen_skipped_unchanged',
@@ -503,7 +503,7 @@ export async function POST(request: NextRequest) {
     const storedAfterNatal =
       ((await getDocument('comprehensiveMysticalProfiles', uid)) || {}) as Record<string, unknown>;
     const readiness =
-      natalReadiness ?? summarizeToolReadiness(storedAfterNatal, ALL_TOOL_SLUGS);
+      natalReadiness ?? summarizeToolReadiness(storedAfterNatal, ALL_TOOL_SLUGS, newHash);
     await setDocument('users', uid, {
       mysticalProfileGenerated: true,
       mysticalProfileGeneratedAt: Date.now(),
@@ -613,7 +613,8 @@ export async function GET(request: NextRequest) {
     const generationJobStatus = typeof generationJob?.status === 'string' ? generationJob.status : null;
     const lockRuntime = getMysticalLockRuntimeStatus(lock, mysticalLockStaleMs());
     const generated = Boolean(user?.mysticalProfileGenerated) || Boolean(profileDoc);
-    const readiness = summarizeToolReadiness(profile, ALL_TOOL_SLUGS);
+    const currentHash = typeof user?.profileDataHash === 'string' ? user.profileDataHash : undefined;
+    const readiness = summarizeToolReadiness(profile, ALL_TOOL_SLUGS, currentHash);
     const lastHeartbeatAt = typeof generationJob?.lastHeartbeatAt === 'number' ? generationJob.lastHeartbeatAt : null;
     const runningHeartbeatStale =
       generationJobStatus === 'running' &&
diff --git a/lib/onDemandToolReports.ts b/lib/onDemandToolReports.ts
index 4c059cf..0521629 100644
--- a/lib/onDemandToolReports.ts
+++ b/lib/onDemandToolReports.ts
@@ -89,7 +89,7 @@ export async function persistOnDemandToolReports(params: {
 
   profilePatch.toolStatus = toolStatus;
   const mergedProfile = { ...existingProfile, ...profilePatch };
-  const readiness = summarizeToolReadiness(mergedProfile, ALL_TOOL_SLUGS);
+  const readiness = summarizeToolReadiness(mergedProfile, ALL_TOOL_SLUGS, profileHash);
   await setDocument('comprehensiveMysticalProfiles', uid, profilePatch);
   await setDocument('users', uid, {
     mysticalProfileGenerated: true,
diff --git a/lib/toolReportReadiness.ts b/lib/toolReportReadiness.ts
index 08fd388..c93f07b 100644
--- a/lib/toolReportReadiness.ts
+++ b/lib/toolReportReadiness.ts
@@ -168,9 +168,27 @@ export function getCoreToolSlugsCore10(): string[] {
   return [...CORE10_TOOL_SLUGS];
 }
 
+/**
+ * When a current profile hash is supplied, reports keyed to a *different*
+ * generationIdempotencyKey are treated as pending so a birth-data regen
+ * refills the catalog instead of keeping the previous natal's readings.
+ * Reports with no key stay ready (legacy rows) unless Generate clears them.
+ */
+export function reportMatchesCurrentProfileHash(
+  report: unknown,
+  currentProfileHash: string | undefined,
+): boolean {
+  if (!currentProfileHash) return true;
+  if (!report || typeof report !== 'object') return true;
+  const key = (report as Record<string, unknown>).generationIdempotencyKey;
+  if (typeof key !== 'string' || key.length === 0) return true;
+  return key === currentProfileHash;
+}
+
 export function summarizeToolReadiness(
   profile: Record<string, unknown> | null | undefined,
   toolSlugs: readonly string[] = ALL_TOOL_SLUGS,
+  currentProfileHash?: string,
 ): { readyToolsCount: number; pendingToolSlugs: string[]; allReportsReady: boolean } {
   if (!profile) {
     return {
@@ -184,7 +202,7 @@ export function summarizeToolReadiness(
   const pendingToolSlugs: string[] = [];
   for (const slug of toolSlugs) {
     const report = profile[slug] ?? toolReports?.[slug]?.data;
-    if (isReadyToolReport(report, slug)) {
+    if (isReadyToolReport(report, slug) && reportMatchesCurrentProfileHash(report, currentProfileHash)) {
       readyToolsCount += 1;
     } else {
       pendingToolSlugs.push(slug);
diff --git a/tests/integration/generate-catalog-batch.test.ts b/tests/integration/generate-catalog-batch.test.ts
index 214c4bf..3354f60 100644
--- a/tests/integration/generate-catalog-batch.test.ts
+++ b/tests/integration/generate-catalog-batch.test.ts
@@ -145,6 +145,42 @@ describe('generate-catalog-batch API', () => {
     expect(data.allReportsReady).toBe(false);
   });
 
+  it('generates hash-mismatched tools instead of treating the old catalog as complete', async () => {
+    mockGetDocument.mockImplementation((collection: string) => {
+      if (collection === 'users') return Promise.resolve({ uid, mysticalProfileGenerated: true });
+      if (collection === 'comprehensiveMysticalProfiles') {
+        const stored = allToolsDisplayableProfile();
+        stored.vedic = {
+          ...displayableReportForSlug('vedic'),
+          generationIdempotencyKey: 'hash-1',
+        };
+        stored.western = {
+          ...displayableReportForSlug('western'),
+          generationIdempotencyKey: 'hash-1',
+        };
+        for (const slug of ALL_TOOL_SLUGS) {
+          if (slug === 'vedic' || slug === 'western') continue;
+          stored[slug] = {
+            ...displayableReportForSlug(slug),
+            generationIdempotencyKey: 'old-hash',
+          };
+        }
+        return Promise.resolve(stored);
+      }
+      return Promise.resolve({});
+    });
+    const res = await callBatch();
+    const data = await res.json();
+    expect(res.status).toBe(200);
+    expect(mockGenerateAndPersistToolReports).toHaveBeenCalledWith(
+      expect.objectContaining({
+        toolSlugs: ['hellenistic', 'esotericAstrology'],
+      }),
+    );
+    expect(data.generatedSlugs).toEqual(['hellenistic', 'esotericAstrology']);
+    expect(data.allReportsReady).toBe(false);
+  });
+
   it('skips exhausted failed slugs and generates the next runnable tools', async () => {
     mockGetDocument.mockImplementation((collection: string) => {
       if (collection === 'users') return Promise.resolve({ uid, mysticalProfileGenerated: true });
diff --git a/tests/integration/profile-generate.test.ts b/tests/integration/profile-generate.test.ts
index 0ab5552..93917f3 100644
--- a/tests/integration/profile-generate.test.ts
+++ b/tests/integration/profile-generate.test.ts
@@ -400,6 +400,42 @@ describe('Profile generate-mystical API', () => {
       expect(data.pendingToolSlugs.length).toBeGreaterThan(0);
       expect(mockGenerateAndPersistToolReports).not.toHaveBeenCalled();
     });
+
+    it('returns fill_catalog when hash matches but stored tools belong to a previous hash', async () => {
+      const profile = { ...baseProfile };
+      const hash = calculateProfileDataHash(profile);
+      const staleCatalog = allToolsDisplayableProfile();
+      for (const slug of ALL_TOOL_SLUGS) {
+        staleCatalog[slug] = {
+          ...(staleCatalog[slug] as Record<string, unknown>),
+          generationIdempotencyKey: 'previous-hash',
+        };
+      }
+      mockGetDocument.mockImplementation((collection: string) => {
+        if (collection === 'users') {
+          return Promise.resolve({
+            ...profile,
+            mysticalProfileGenerated: true,
+            profileDataHash: hash,
+          });
+        }
+        if (collection === 'generationLocks') return Promise.resolve(null);
+        if (collection === 'comprehensiveMysticalProfiles') {
+          return Promise.resolve(staleCatalog);
+        }
+        return Promise.resolve(undefined);
+      });
+
+      const res = await callGenerate();
+      const data = await res.json();
+      expect(res.status).toBe(200);
+      expect(data.alreadyGenerated).toBe(true);
+      expect(data.decision).toBe('fill_catalog');
+      expect(data.decisionReason).toBe('unchanged_hash_catalog_incomplete');
+      expect(data.allReportsReady).toBe(false);
+      expect(data.pendingToolSlugs).toContain('tarot');
+      expect(mockGenerateAndPersistToolReports).not.toHaveBeenCalled();
+    });
   });
 
   describe('Auth and validation', () => {
@@ -740,6 +776,59 @@ describe('Profile generate-mystical API', () => {
       expect(mockTryResumeMysticalStageB).not.toHaveBeenCalled();
     });
 
+    it('does not mark the catalog complete when stored tools belong to a previous hash', async () => {
+      const currentHash = calculateProfileDataHash(baseProfile);
+      const staleCatalog = allToolsDisplayableProfile();
+      staleCatalog.vedic = {
+        ...(staleCatalog.vedic as Record<string, unknown>),
+        generationIdempotencyKey: currentHash,
+      };
+      staleCatalog.western = {
+        ...(staleCatalog.western as Record<string, unknown>),
+        generationIdempotencyKey: currentHash,
+      };
+      for (const slug of ALL_TOOL_SLUGS) {
+        if (slug === 'vedic' || slug === 'western') continue;
+        staleCatalog[slug] = {
+          ...(staleCatalog[slug] as Record<string, unknown>),
+          generationIdempotencyKey: 'previous-hash',
+        };
+      }
+      mockGetDocument.mockImplementation((collection: string) => {
+        if (collection === 'users') {
+          return Promise.resolve({
+            ...baseProfile,
+            mysticalProfileGenerated: true,
+            profileDataHash: currentHash,
+            allReportsReady: true,
+            pendingToolSlugs: [],
+          });
+        }
+        if (collection === 'generationLocks') {
+          return Promise.resolve({ status: 'completed', phase: 'completed', updatedAt: Date.now() });
+        }
+        if (collection === 'comprehensiveMysticalProfiles') {
+          return Promise.resolve(staleCatalog);
+        }
+        return Promise.resolve(undefined);
+      });
+
+      const res = await callGenerationStatus();
+      const data = await res.json();
+      expect(res.status).toBe(200);
+      expect(data.allReportsReady).toBe(false);
+      expect(data.completed).toBe(false);
+      expect(data.pendingToolSlugs).toContain('tarot');
+      expect(data.pendingToolSlugs).not.toContain('vedic');
+      expect(mockSetDocument).toHaveBeenCalledWith(
+        'users',
+        uid,
+        expect.objectContaining({
+          allReportsReady: false,
+        }),
+      );
+    });
+
     it('reconciles user allReportsReady false when profile shows all tools ready', async () => {
       const allReadyProfile = allToolsDisplayableProfile();
       mockGetDocument.mockImplementation((collection: string) => {
diff --git a/tests/integration/report-readiness.test.ts b/tests/integration/report-readiness.test.ts
index 2c181d6..8efed1c 100644
--- a/tests/integration/report-readiness.test.ts
+++ b/tests/integration/report-readiness.test.ts
@@ -91,4 +91,32 @@ describe('Report readiness contract', () => {
     expect(summary.pendingToolSlugs).not.toContain('nameAnalysis');
     expect(summary.pendingToolSlugs).not.toContain('vastu');
   });
+
+  it('treats generationIdempotencyKey mismatches as pending when a current hash is given', () => {
+    const profile = {
+      vedic: { planets: [{ name: 'Sun' }], generationIdempotencyKey: 'hash-new' },
+      western: { planets: [{ name: 'Moon' }], generationIdempotencyKey: 'hash-old' },
+      tarot: { profile: { birthCard: { name: 'The Fool' } } },
+    } as Record<string, unknown>;
+    const summary = summarizeToolReadiness(profile, ALL_TOOL_SLUGS, 'hash-new');
+    expect(summary.pendingToolSlugs).not.toContain('vedic');
+    expect(summary.pendingToolSlugs).toContain('western');
+    expect(summary.pendingToolSlugs).not.toContain('tarot');
+    expect(summary.allReportsReady).toBe(false);
+  });
+
+  it('does not treat missing keys as stale when summarizing for a current hash', () => {
+    const slugs = ['dreamSymbols', 'ogham'] as const;
+    const keyed = {
+      dreamSymbols: { reading: 'ok', generationIdempotencyKey: 'hash-1' },
+      ogham: { reading: 'ok', generationIdempotencyKey: 'hash-1' },
+    };
+    const unkeyed = {
+      dreamSymbols: { reading: 'ok' },
+      ogham: { reading: 'ok' },
+    };
+    expect(summarizeToolReadiness(keyed, slugs, 'hash-1').allReportsReady).toBe(true);
+    expect(summarizeToolReadiness(unkeyed, slugs, 'hash-1').allReportsReady).toBe(true);
+    expect(summarizeToolReadiness(keyed, slugs, 'hash-2').allReportsReady).toBe(false);
+  });
 });