feat: refine builder skill chip flows

src/lib/builder/loadout-summary.test.ts

@@ -207,7 +207,7 @@ describe('summarizeLoadout', () => {
     });
     expect(summary.equippedTalents).toEqual([
       expect.objectContaining({
-        key: 'chips:chip-set',
+        key: 'chips:chip-set:ability',
         tier: 1,
         abilityId: 'ability',
         description: 'Gain 25% Skill Damage.',
@@ -217,6 +217,7 @@ describe('summarizeLoadout', () => {
 
   it('keeps Skill Chip primaries ability-scoped while adding secondaries to Agent stats', () => {
     const draft = createDraft();
+    draft.specialization.focusId = 'focus-1';
     draft.chips[0] = {
       setId: 'chip-set',
       quality: 'Superior',
@@ -239,11 +240,24 @@ describe('summarizeLoadout', () => {
           {
             id: 'chip-set',
             name: 'Signal',
-            specialization_ability_id: 'ability-1',
+            specialization_ability_id: 'ability-2',
+            compatibleAbilityIds: ['ability-2', 'ability-1'],
             twoPiece: null,
             talent: null,
           },
         ],
+        specializations: [
+          {
+            id: 'specialization-1',
+            focuses: [
+              {
+                id: 'focus-1',
+                abilities: [{ id: 'ability-1' }],
+                nodes: [],
+              },
+            ],
+          },
+        ],
       }),
     );
 
@@ -272,6 +286,50 @@ describe('summarizeLoadout', () => {
     ]);
   });
 
+  it('ignores a shared Skill Chip after its ability link is removed', () => {
+    const draft = createDraft();
+    draft.specialization.focusId = 'focus-1';
+    draft.chips[0] = {
+      setId: 'chip-set',
+      quality: 'Standard',
+      primary: { statId: 'skill-duration', value: 12 },
+      secondary: [],
+    };
+
+    const summary = summarizeLoadout(
+      draft,
+      catalog({
+        attributes: [
+          attribute('skill-duration', 'Skill Duration', { unit: '%' }),
+        ],
+        chipSets: [
+          {
+            id: 'chip-set',
+            name: 'Signal',
+            specialization_ability_id: 'ability-2',
+            compatibleAbilityIds: ['ability-2'],
+            twoPiece: null,
+            talent: null,
+          },
+        ],
+        specializations: [
+          {
+            id: 'specialization-1',
+            focuses: [
+              {
+                id: 'focus-1',
+                abilities: [{ id: 'ability-1' }],
+                nodes: [],
+              },
+            ],
+          },
+        ],
+      }),
+    );
+
+    expect(summary.abilityStats).toEqual([]);
+  });
+
   it.each([
     [0, 10],
     [1, 20],