Fix description silently dropped by encodeDefaults=false (#55)

The Retrofit kotlinx Json (NetModule) keeps encodeDefaults=false, so a
@serializable request-body property equal to its declared default is
omitted from the payload.

ItemTagBodyDetail.description = "" (== default) was dropped, so clearing
a description on edit was silently ignored by the server's partial update.

Drop the default (both call sites already pass description explicitly);
update DemoItemTagRepositoryTest to pass description explicitly.

Bump versionCode to 11 / versionName to 3.2.6 and update CHANGELOG.

Mirrors NativeAppTemplate-Android a78f42e. (The DeviceRegistrationBody
fix in that commit does not apply — the Free variant has no device
registration.)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: dadachi

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
+## [3.2.6] - 2026-05-24
+
+### Fixed
+- Clearing an item tag's description on edit was silently ignored — the Retrofit JSON config keeps `encodeDefaults = false`, so `ItemTagBodyDetail.description = ""` (equal to its declared default) was dropped from the request body and the server's partial update left the old description in place. Removed the default so the empty string is always sent
+
 ## [3.2.5] - 2026-05-08
 
 ### Changed

app/build.gradle.kts

@@ -14,8 +14,8 @@ android {
     applicationId = "com.nativeapptemplate.nativeapptemplatefree"
     targetSdk = 36
     minSdk = 26
-    versionCode = 10
-    versionName = "3.2.5"
+    versionCode = 11
+    versionName = "3.2.6"
 
     vectorDrawables {
       useSupportLibrary = true

app/src/test/kotlin/com/nativeapptemplate/nativeapptemplatefree/demo/item_tag/DemoItemTagRepositoryTest.kt

@@ -71,6 +71,7 @@ class DemoItemTagRepositoryTest {
         ItemTagBody(
           itemTagBodyDetail = ItemTagBodyDetail(
             name = itemTagData.getName(),
+            description = "",
           ),
         ),
       ).first(),
@@ -86,6 +87,7 @@ class DemoItemTagRepositoryTest {
         itemTagBody = ItemTagBody(
           itemTagBodyDetail = ItemTagBodyDetail(
             name = itemTagData.getName(),
+            description = "",
           ),
         ),
       ).first(),

model/src/main/kotlin/com/nativeapptemplate/nativeapptemplatefree/model/ItemTagBodyDetail.kt

@@ -8,5 +8,9 @@ import kotlinx.serialization.Serializable
 @Parcelize
 data class ItemTagBodyDetail(
   val name: String,
-  val description: String = "",
+  // No default: with the Json config's encodeDefaults = false, a value equal to
+  // its default ("") is dropped from the payload, so clearing a description on
+  // edit would be silently ignored by the server's partial update. Both call
+  // sites supply description explicitly.
+  val description: String,
 ) : Parcelable