diff --git a/tests/browser/full-inspector.spec.mjs b/tests/browser/full-inspector.spec.mjs
index a8c6a0e..6c6e2f9 100644
--- a/tests/browser/full-inspector.spec.mjs
+++ b/tests/browser/full-inspector.spec.mjs
@@ -167,6 +167,16 @@ test('panel matches the concept order and copy',async({page,request})=>{
     await selectFile(page,'workflow-only.png');await expect(panel.locator('.panel-heading h2')).toHaveText('workflow-only.png');
     await expect(panel.locator('.chip:not(.blue)')).toHaveCount(1);await expect(panel.locator('.detail-inner > .tags button')).toHaveCount(0);
     await expect(panel.getByRole('button',{name:'Prompt history',exact:true})).toHaveCount(0);
+    // D39 mixed scopes: each field follows its own source, so the prefix and the tag chips can disagree.
+    const tagRow=panel.locator('.detail-inner > .tags').last();
+    reads.patch=data=>{data.library={...data.library,status:'linked',category:'Subject',category_scope:'pair',tags_scope:'positive',tags:['alpha','beta']};};
+    await selectFile(page,'complete.png');
+    await expect(panel.locator('span.chip:not(.blue) .ca-visually-hidden')).toHaveText('Recipe category: ');
+    await expect(tagRow.getByRole('button')).toHaveText(['alpha','beta']);
+    reads.patch=data=>{data.library={...data.library,status:'linked',category:'Subject',category_scope:'positive',tags_scope:'pair',tags:['alpha','beta']};};
+    await selectFile(page,'workflow-only.png');
+    await expect(panel.locator('span.chip:not(.blue) .ca-visually-hidden')).toHaveText('Positive prompt category: ');
+    await expect(tagRow.locator('span.chip')).toHaveText(['alpha','beta']);await expect(tagRow.getByRole('button')).toHaveCount(0);
     // Loading and error states render in `.detail-inner` as `.small` text with the existing buttons.
     reads.patch=null;await page.unroute('**/images/inspect/**');
     await page.route('**/images/inspect/**',route=>route.fulfill({status:500,json:{success:false,error:'broken'}}));
diff --git a/tests/js/workspace-inspection-state.test.js b/tests/js/workspace-inspection-state.test.js
index 8d6d7f6..92bc176 100644
--- a/tests/js/workspace-inspection-state.test.js
+++ b/tests/js/workspace-inspection-state.test.js
@@ -276,6 +276,10 @@ test('record rejects root path media and invalid versioned fields with retryable
         data => { data.file.size = -1; }, data => { data.library.positive_id = 9007199254740992; },
         data => { data.metadata.prompt_graph = { status: 'limited', value: {} }; },
         data => { data.resolution.sampler_id = {}; },
+        data => { data.library.tags_scope = 'recipe'; },
+        data => { data.library.category_scope = 'recipe'; },
+        data => { delete data.library.category_scope; },
+        data => { delete data.library.tags_scope; },
     ]) {
         const data = envelope(); mutate(data);
         assert.throws(() => toRecord(data, image(), extractGenerationFacts), error => error instanceof TypeError && !error.refreshRequired);
diff --git a/tests/test_inspection_response.py b/tests/test_inspection_response.py
index 51ca086..37de619 100644
--- a/tests/test_inspection_response.py
+++ b/tests/test_inspection_response.py
@@ -664,6 +664,21 @@ class TestInspectionResponse(unittest.TestCase):
         for key in ("positive_id", "pair_id", "category", "title"):
             self.assertNotIn(key, result["library"])
         self.assertEqual(result["library"]["tags"], ["valid"])
+        # An unknown or non-string scope is dropped, never passed through.
+        for bad in ("recipe", 3, ["pair"]):
+            result = json.loads(
+                encode(
+                    None,
+                    library={
+                        "status": "linked",
+                        "category_scope": bad,
+                        "tags_scope": bad,
+                        "tags": [],
+                    },
+                )
+            )
+            self.assertNotIn("category_scope", result["library"])
+            self.assertNotIn("tags_scope", result["library"])
         result = json.loads(
             encode(inspection({}), library={"status": "linked", "tags": ["猫" * 12000]})
         )