fix(release): tolerate Forgejo null body/assets in release JSON

Gitea may emit null for empty release notes or assets; enable
Json.coerceInputValues and defaults so update checks do not fail
deserialization (unrelated to release-note workflow length).

Co-authored-by: Cursor <cursoragent@cursor.com>

app/src/main/java/eu/kanade/tachiyomi/di/AppModule.kt

@@ -128,6 +128,8 @@ class AppModule(val app: Application) : InjektModule {
             Json {
                 ignoreUnknownKeys = true
                 explicitNulls = false
+                // Gitea/Forgejo often uses JSON null for empty release body or assets array.
+                coerceInputValues = true
             }
         }
         addSingletonFactory {

data/src/main/java/tachiyomi/data/release/GithubRelease.kt

@@ -5,17 +5,19 @@ import kotlinx.serialization.Serializable
 
 /**
  * Contains information about the latest release from GitHub.
+ * Forgejo/Gitea may send JSON `null` for empty [info] or [assets]; defaults + `Json.coerceInputValues`
+ * keep deserialization from failing.
  */
 @Serializable
 data class GithubRelease(
     @SerialName("tag_name")
     val version: String,
     @SerialName("body")
-    val info: String,
+    val info: String = "",
     @SerialName("html_url")
     val releaseLink: String,
     @SerialName("assets")
-    val assets: List<GitHubAsset>,
+    val assets: List<GitHubAsset> = emptyList(),
     // KMK -->
     @SerialName("prerelease")
     val preRelease: Boolean = false,
@@ -29,7 +31,7 @@ data class GithubRelease(
  */
 @Serializable
 data class GitHubAsset(
-    val name: String,
+    val name: String = "",
     @SerialName("browser_download_url")
-    val downloadLink: String,
+    val downloadLink: String = "",
 )

data/src/main/java/tachiyomi/data/release/ReleaseServiceImpl.kt

@@ -74,7 +74,9 @@ class ReleaseServiceImpl(
     // KMK <--
 
     private fun getDownloadLink(release: GithubRelease, isFoss: Boolean): String? {
-        val map = release.assets.associate { asset ->
+        val map = release.assets
+            .filter { it.name.isNotBlank() && it.downloadLink.isNotBlank() }
+            .associate { asset ->
                 BUILD_TYPES.find { "-$it" in asset.name } to asset.downloadLink
             }