fix: resolve coverage gap and migration filename collision

- Add getTableConfig FK reference tests to cover deferred .references()
  callbacks in schema.ts (fixes Codecov patch coverage < 94.98%)
- Rename 0011_image-hosting → 0012_image-hosting to avoid filename
  collision with pre-existing 0011_notifications migration

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

migrations/meta/_journal.json

@@ -83,7 +83,7 @@
       "idx": 11,
       "version": "6",
       "when": 1776749333797,
-      "tag": "0011_image-hosting",
+      "tag": "0012_image-hosting",
       "breakpoints": true
     }
   ]

server/db/image-hosting.test.ts

@@ -1,3 +1,4 @@
+import { getTableConfig } from 'drizzle-orm/sqlite-core'
 import { describe, expect, it } from 'vitest'
 import { apikey } from './auth-schema.js'
 import { imageHostingConfigs, imageHostings } from './schema.js'
@@ -40,6 +41,14 @@ describe('imageHostingConfigs table', () => {
     expect(imageHostingConfigs.createdAt.notNull).toBe(true)
     expect(imageHostingConfigs.updatedAt.notNull).toBe(true)
   })
+
+  it('org_id has a cascade-delete FK to organization', () => {
+    const { foreignKeys } = getTableConfig(imageHostingConfigs)
+    expect(foreignKeys).toHaveLength(1)
+    const ref = foreignKeys[0].reference()
+    expect(ref.foreignColumns).toHaveLength(1)
+    expect(ref.foreignColumns[0].name).toBe('id')
+  })
 })
 
 describe('imageHostings table', () => {
@@ -97,6 +106,17 @@ describe('imageHostings table', () => {
   it('has not-null created_at timestamp', () => {
     expect(imageHostings.createdAt.notNull).toBe(true)
   })
+
+  it('org_id and storage_id have cascade/no-action FKs', () => {
+    const { foreignKeys } = getTableConfig(imageHostings)
+    expect(foreignKeys).toHaveLength(2)
+    // Both FKs resolve to a single-column reference on 'id'
+    for (const fk of foreignKeys) {
+      const ref = fk.reference()
+      expect(ref.foreignColumns).toHaveLength(1)
+      expect(ref.foreignColumns[0].name).toBe('id')
+    }
+  })
 })
 
 describe('apikey table', () => {