diff --git a/packages/database/src/schema/generations.ts b/packages/database/src/schema/generations.ts
index 18fca61..a61ac9b 100644
--- a/packages/database/src/schema/generations.ts
+++ b/packages/database/src/schema/generations.ts
@@ -83,7 +83,7 @@ export const generations = pgTable(
     // Request context
     requestId: uuid('request_id'),
     userAgent: text('user_agent'),
-    ipAddress: varchar('ip_address', { length: 45 }), // IPv6 max length
+    ipAddress: text('ip_address'),
 
     // Metadata
     meta: jsonb('meta').$type<Record<string, unknown>>().notNull().default({}),
@@ -130,6 +130,9 @@ export const generations = pgTable(
 
     // Index for request correlation
     requestIdx: index('idx_generations_request').on(table.requestId),
+
+    // Index for API key audit trail
+    apiKeyIdx: index('idx_generations_api_key').on(table.apiKeyId),
   }),
 );
 
diff --git a/packages/database/src/schema/images.ts b/packages/database/src/schema/images.ts
index 80a1713..dddafa0 100644
--- a/packages/database/src/schema/images.ts
+++ b/packages/database/src/schema/images.ts
@@ -52,7 +52,7 @@ export const images = pgTable(
     // File metadata
     mimeType: varchar('mime_type', { length: 100 }).notNull(),
     fileSize: integer('file_size').notNull(),
-    fileHash: varchar('file_hash', { length: 64 }).notNull(), // SHA-256 for deduplication
+    fileHash: varchar('file_hash', { length: 64 }), // SHA-256 for deduplication
 
     // Dimensions
     width: integer('width'),
@@ -127,6 +127,9 @@ export const images = pgTable(
 
     // Index for file hash (deduplication)
     hashIdx: index('idx_images_hash').on(table.fileHash),
+
+    // Index for API key audit trail
+    apiKeyIdx: index('idx_images_api_key').on(table.apiKeyId),
   }),
 );