Migrate AI Hint feed generation

Bring dynamic hint generation into the account service while preserving the legacy key.osglab.com deployment for existing clients.

src/main/kotlin/com/osglab/account/Application.kt

@@ -73,6 +73,17 @@ import com.osglab.account.features.content.repositories.ContentRepository
 import com.osglab.account.features.content.repositories.ExposedContentRepository
 import com.osglab.account.features.content.routes.contentRoutes
 import com.osglab.account.features.content.services.ContentService
+import com.osglab.account.features.content.feed.ExposedHintFeedRepository
+import com.osglab.account.features.content.feed.HintFeedRepository
+import com.osglab.account.features.content.feed.HintFeedGenerationLock
+import com.osglab.account.features.content.feed.HintFeedScheduler
+import com.osglab.account.features.content.feed.HintFeedService
+import com.osglab.account.features.content.feed.MysqlHintFeedGenerationLock
+import com.osglab.account.features.content.feed.sources.BaselineHintSource
+import com.osglab.account.features.content.feed.sources.GoogleFeedHintSource
+import com.osglab.account.features.content.feed.sources.HolidayHintSource
+import com.osglab.account.features.content.feed.sources.TopHubHintSource
+import com.osglab.account.features.content.feed.sources.WeatherHintSource
 import com.osglab.account.features.gateway.adapters.CreditReservationAdapter
 import com.osglab.account.features.gateway.adapters.SessionIdentityAdapter
 import com.osglab.account.features.gateway.GatewaySettings
@@ -267,6 +278,12 @@ fun Application.module() {
         null
     }
 
+    if (appConfig.hintFeed.enabled) {
+        launch {
+            koin.get<HintFeedScheduler>().run()
+        }
+    }
+
     launch {
         while (isActive) {
             try {
@@ -349,6 +366,7 @@ fun Application.module() {
                     operatorService = koin.get(),
                     auditService = koin.get(),
                     contentService = koin.get(),
+                    hintFeedService = koin.get(),
                 )
             }
         }
@@ -426,6 +444,25 @@ fun accountServerModule(config: AppConfig): Module = module {
     single { AdminGrantService(get()) }
     single<ContentRepository> { ExposedContentRepository(get()) }
     single { ContentService(get()) }
+    single<HintFeedRepository> { ExposedHintFeedRepository(get()) }
+    single<HintFeedGenerationLock> { MysqlHintFeedGenerationLock(get()) }
+    single {
+        val client = get<HttpClient>()
+        HintFeedService(
+            repository = get(),
+            contentService = get(),
+            generationLock = get(),
+            sources = listOf(
+                BaselineHintSource(),
+                HolidayHintSource(client),
+                WeatherHintSource(client),
+                TopHubHintSource(client, config.hintFeed.topHubApiKey),
+                GoogleFeedHintSource(client),
+            ),
+            config = config.hintFeed,
+        )
+    }
+    single { HintFeedScheduler(get()) }
     single<AppleJwksProvider> {
         RemoteAppleJwksProvider(get(), config.apple.jwksUrl)
     }