fix(payload-ai): convert server actions to api endpoints, drop @payload-config dependency

packages/payload-ai/src/chatPlugin.ts

@@ -1,6 +1,8 @@
 import type { Config, Plugin } from 'payload'
 import { AIChatPermissionsCollection } from './collections/AIChatPermissions.js'
 import type { PayloadChatPluginConfig } from './types.js'
+import { optimizePostEndpoint } from './endpoints/optimizeEndpoint.js'
+import { generateSlugEndpoint, generateThumbnailEndpoint, generateSingleFieldEndpoint } from './endpoints/generateEndpoints.js'
 
 export const payloadChatPlugin =
     (pluginOptions: PayloadChatPluginConfig): Plugin =>
@@ -48,6 +50,26 @@ export const payloadChatPlugin =
                         return Response.json({ message: "Chat endpoint active" })
                     },
                 },
+                {
+                    path: '/api/mintel-ai/optimize',
+                    method: 'post',
+                    handler: optimizePostEndpoint,
+                },
+                {
+                    path: '/api/mintel-ai/generate-slug',
+                    method: 'post',
+                    handler: generateSlugEndpoint,
+                },
+                {
+                    path: '/api/mintel-ai/generate-thumbnail',
+                    method: 'post',
+                    handler: generateThumbnailEndpoint,
+                },
+                {
+                    path: '/api/mintel-ai/generate-single-field',
+                    method: 'post',
+                    handler: generateSingleFieldEndpoint,
+                },
             ]
 
             // 3. Inject Chat React Component into Admin UI