feat(spoons): find owned spoons by pushed repo (indexed)

packages/backend/convex/schema.ts

@@ -135,7 +135,8 @@ const applicationTables = {
     .index('by_owner', ['ownerId'])
     .index('by_owner_status', ['ownerId', 'status'])
     .index('by_owner_provider', ['ownerId', 'provider'])
-    .index('by_upstream', ['provider', 'upstreamOwner', 'upstreamRepo']),
+    .index('by_upstream', ['provider', 'upstreamOwner', 'upstreamRepo'])
+    .index('by_fork', ['provider', 'forkOwner', 'forkRepo']),
   spoonRepositoryStates: defineTable({
     spoonId: v.id('spoons'),
     ownerId: v.id('users'),