diff --git a/docs/50_Step记录/STEP-051_Local_Production-like_Field_Feed与Core_Snapshot_Submit_Bridge_v1.md b/docs/50_Step记录/STEP-051_Local_Production-like_Field_Feed与Core_Snapshot_Submit_Bridge_v1.md
index 1c10d5023..77420c794 100644
--- a/docs/50_Step记录/STEP-051_Local_Production-like_Field_Feed与Core_Snapshot_Submit_Bridge_v1.md
+++ b/docs/50_Step记录/STEP-051_Local_Production-like_Field_Feed与Core_Snapshot_Submit_Bridge_v1.md
@@ -45,3 +45,14 @@ TIME/NORMAL validation 入口现可选择 production-like source（UI 状态标
 - Jest：未执行。
 
 当前状态只能记为：`IMPLEMENTED / WAITING_ANDROID_VALIDATION`。
+
+## Android Validation Host 入口补充
+
+在现有 Particle Core Layer Validation 页面的 MORE 菜单新增：
+
+- `PRODUCTION FEED`：切换到 STEP-051 已有 `production-fields` source，加载四个 local metadata asset 与既有 binary payload，继续进入 Core Adapter、Snapshot、initial T0/T1、Timeline READY/PLAY 路径。
+- `INVALID PROD`：加载 `field-invalid.json`，其中 `fieldId`、`generation`、`validTime` 明确非法，用于观察正式 Adapter rejection/fail-closed；不放宽 contract。
+
+旧 `UNIFORM EAST`、`UNIFORM NORTH`、`VORTEX` 与 TIME 控件仍保留。Host 仅触发低频 style/resource 命令；没有新增 JNI command、Android Timer、Timeline、Window 或 MIX state。状态栏在 production 模式显示 `PRODUCTION · TL ...`，日志仍由 Core 输出 `PRODUCTION_FEED_LOAD`、`SNAPSHOT_SUBMIT` 和 Timeline 事件。
+
+本次没有修改 C++ Core、Timeline、Runtime Field Window、Renderer、Adapter contract、MIX observability 或 Rotation/Viewport。Android Gradle/APK/ADB/实机验证仍由用户执行；状态继续为 `IMPLEMENTED / WAITING_ANDROID_VALIDATION`。
diff --git a/docs/报告/STEP-051_Android_Validation_Host入口补充_Codex完成报告_v1.md b/docs/报告/STEP-051_Android_Validation_Host入口补充_Codex完成报告_v1.md
new file mode 100644
index 000000000..e52508410
--- /dev/null
+++ b/docs/报告/STEP-051_Android_Validation_Host入口补充_Codex完成报告_v1.md
@@ -0,0 +1,52 @@
+# STEP-051 Android Validation Host 入口补充 — Codex 完成报告
+
+## 基线
+
+- Starting HEAD：`e3e7c7e219c490ab45ca40794db0bc59fc2c4817`
+- branch：`particle/main`
+- origin/particle/main 起点：`e3e7c7e219c490ab45ca40794db0bc59fc2c4817`
+- 任务性质：STEP-051 内部 Android Validation Host 补充。
+
+## 修改与接线
+
+- `ParticleCoreLayerValidationActivity.kt`：MORE 菜单新增 `PRODUCTION FEED` 与 `INVALID PROD`，分别触发现有 production-like source 和非法 metadata source。
+- `activity_particle_core_layer_validation.xml`：增加不可见菜单 target `validationProductionInvalid`。
+- Android asset：增加 `field-invalid.json`。
+- `STEP-051_Local_Production-like_Field_Feed与Core_Snapshot_Submit_Bridge_v1.md`：追加入口说明。
+
+`PRODUCTION FEED` 复用 STEP-051 已有 `production-fields`、`LocalParticleFieldFeed`、正式 Adapter、Snapshot、`submitInitialRuntimeFieldWindow` 和 Core Timeline。没有复制 feed、Timeline、Runtime Window、MIX 或 normalization。`INVALID PROD` 只提供明确非法 local metadata 触发，Adapter contract 未放宽。
+
+日志区分 production-like 路径与 fixture 路径；Core 侧既有低频 `PRODUCTION_FEED_LOAD`、`SNAPSHOT_SUBMIT`、Timeline READY/Boundary 日志继续生效。未增加 JNI method、JNI command、每帧日志或 Android Timer。
+
+## 边界判断
+
+- Core / Timeline / Runtime Field Window / Renderer：未修改。
+- ParticleFieldDataAdapter / Descriptor / Snapshot：未修改。
+- Duplicate：继续复用当前 source 的既有 `DUPLICATE T1`，production source 激活后由同一 Runtime Window 处理。
+- MIX observability：未修改，仍为 `NON-BLOCKING` 技术债。
+- Rotation/Viewport：未修改。
+
+## 验证
+
+- Linux OpenGL `mbgl-test-runner` 精确构建：复用 STEP-051 已通过构建。
+- 相关定向测试：复用并确认 STEP-051 既有 `Source.LocalProductionFeed*`、`Source.ParticleFieldDataAdapter*`、`Source.RasterArray*` 为 14/14 PASS。
+- Android source static inspection：确认 MORE 菜单、resource ID、production asset 路径和旧 fixture 入口均存在。
+- JNI signature/registration：本次无 JNI 改动，无需新增注册。
+- `git diff --check`：PASS。
+- Android Gradle/APK/ADB/App/实机：未执行。
+- Jest：未执行、未修改。
+
+## Git 与状态
+
+- commit message：`test: expose STEP-051 production feed validation`
+- commit hash：待提交后回填。
+- push result：待执行。
+- remote branch：`origin/particle/main`
+- Final HEAD：待 push 后回填。
+- 无关 untracked 文件未修改、未 stage、未提交。
+
+当前 STEP-051 状态保持：`IMPLEMENTED / WAITING_ANDROID_VALIDATION`。
+
+## 用户 Android 验收步骤
+
+重新 build/install 一次后：MORE → `PRODUCTION FEED`，观察 `PRODUCTION` 与 `TL READY`；再进入 TIME → `PLAY / RESTART`，验证 MIX、至少两个 boundary、reuse/upload、`simulationRebuild=false`、`trailCleared=false`、Pause/Resume、Duplicate T1。随后可点 MORE → `INVALID PROD`，确认 Adapter reject、保持最后有效 Field、Renderer 持续且不黑屏。
diff --git a/platform/android/MapLibreAndroidTestApp/src/main/assets/integration/particle-production/field-invalid.json b/platform/android/MapLibreAndroidTestApp/src/main/assets/integration/particle-production/field-invalid.json
new file mode 100644
index 000000000..72943eabb
--- /dev/null
+++ b/platform/android/MapLibreAndroidTestApp/src/main/assets/integration/particle-production/field-invalid.json
@@ -0,0 +1,4 @@
+{
+  "schema": "maplibre-particle-field/v1", "fieldId": "", "fieldType": "WIND", "displayDomain": "GLOBAL", "generation": 0, "validTime": 0, "dataVersion": 99,
+  "bounds": {"west": -180.0, "south": -85.0, "east": 180.0, "north": 85.0}, "grid": {"width": 16, "height": 16}, "vector": {"layout": "interleaved-uv", "encoding": "float32-le", "noData": -9999.0}, "payload": {"byteLength": 2048}
+}
diff --git a/platform/android/MapLibreAndroidTestApp/src/main/java/org/maplibre/android/testapp/activity/particle/ParticleCoreLayerValidationActivity.kt b/platform/android/MapLibreAndroidTestApp/src/main/java/org/maplibre/android/testapp/activity/particle/ParticleCoreLayerValidationActivity.kt
index dcf40b049..5b06fe7cd 100644
--- a/platform/android/MapLibreAndroidTestApp/src/main/java/org/maplibre/android/testapp/activity/particle/ParticleCoreLayerValidationActivity.kt
+++ b/platform/android/MapLibreAndroidTestApp/src/main/java/org/maplibre/android/testapp/activity/particle/ParticleCoreLayerValidationActivity.kt
@@ -138,6 +138,12 @@ class ParticleCoreLayerValidationActivity : AppCompatActivity() {
         findViewById<Button>(R.id.validationDuplicateWindow).setOnClickListener {
             if (this::maplibreMap.isInitialized) duplicateRuntimeFieldWindow()
         }
+        findViewById<Button>(R.id.validationProductionInvalid).setOnClickListener {
+            productionFeedMode = true
+            timeWindowMode = true
+            timelineState = "NOT READY"
+            if (this::maplibreMap.isInitialized) loadValidationStyle(active, enabled, "INVALID_PRODUCTION_METADATA")
+        }
         findViewById<Button>(R.id.validationVisualDefault).setOnClickListener { resetVisualDefaults() }
         findViewById<Button>(R.id.validationVisualSizeDown).setOnClickListener { setVisualFloat("raster-particle-line-width", lineWidth - 1.0f) { lineWidth = it.coerceIn(1.0f, 8.0f) } }
         findViewById<Button>(R.id.validationVisualSizeUp).setOnClickListener { setVisualFloat("raster-particle-line-width", lineWidth + 1.0f) { lineWidth = it.coerceIn(1.0f, 8.0f) } }
@@ -162,7 +168,7 @@ class ParticleCoreLayerValidationActivity : AppCompatActivity() {
         findViewById<Button>(R.id.validationMenuVisual).setOnClickListener { showMenu(it, "VIS", intArrayOf(R.id.validationVisualDefault, R.id.validationVisualColor, R.id.validationVisualSizeDown, R.id.validationVisualSizeUp, R.id.validationVisualLengthDown, R.id.validationVisualLengthUp, R.id.validationVisualOpacityDown, R.id.validationVisualOpacityUp, R.id.validationVisualTrailDown, R.id.validationVisualTrailUp, R.id.validationVisualFadeDown, R.id.validationVisualFadeUp)) }
         findViewById<Button>(R.id.validationMenuCount).setOnClickListener { showMenu(it, "COUNT", intArrayOf(R.id.validationParticle256, R.id.validationParticle1024, R.id.validationParticle4096, R.id.validationParticle16384, R.id.validationParticle65536, R.id.validationParticle262144, R.id.validationParticle1048576)) }
         findViewById<Button>(R.id.validationMenuMap).setOnClickListener { showMenu(it, "MAP", intArrayOf(R.id.validationGlobal, R.id.validationOceanA, R.id.validationOceanB, R.id.validationDateline, R.id.validationWorldWrap)) }
-        findViewById<Button>(R.id.validationMenuMore).setOnClickListener { showMenu(it, "MORE", intArrayOf(R.id.validationActive, R.id.validationStatic, R.id.validationDisable, R.id.validationEnable, R.id.validationUniformEast, R.id.validationUniformNorth, R.id.validationVortex, R.id.validationAdvanceWindow, R.id.validationDuplicateWindow)) }
+        findViewById<Button>(R.id.validationMenuMore).setOnClickListener { showMenu(it, "MORE", intArrayOf(R.id.validationActive, R.id.validationStatic, R.id.validationDisable, R.id.validationEnable, R.id.validationUniformEast, R.id.validationUniformNorth, R.id.validationVortex, R.id.validationTimeWindow, R.id.validationProductionInvalid, R.id.validationAdvanceWindow, R.id.validationDuplicateWindow)) }
     }
 
     private fun showMenu(anchor: android.view.View, title: String, actions: IntArray) {
@@ -212,7 +218,7 @@ class ParticleCoreLayerValidationActivity : AppCompatActivity() {
     }
 
     private fun actionLabel(id: Int): String = when (id) {
-        R.id.validationVisualDefault -> "VIS DEFAULT"; R.id.validationVisualSizeDown -> "SIZE -"; R.id.validationVisualSizeUp -> "SIZE +"; R.id.validationVisualLengthDown -> "LENGTH -"; R.id.validationVisualLengthUp -> "LENGTH +"; R.id.validationVisualOpacityDown -> "OPACITY -"; R.id.validationVisualOpacityUp -> "OPACITY +"; R.id.validationVisualTrailDown -> "TRAIL -"; R.id.validationVisualTrailUp -> "TRAIL +"; R.id.validationVisualFadeDown -> "FADE -"; R.id.validationVisualFadeUp -> "FADE +"; R.id.validationVisualColor -> "COLOR"; R.id.validationParticle256 -> "256"; R.id.validationParticle1024 -> "1K"; R.id.validationParticle4096 -> "4K"; R.id.validationParticle16384 -> "16K"; R.id.validationParticle65536 -> "64K"; R.id.validationParticle262144 -> "256K"; R.id.validationParticle1048576 -> "1M"; R.id.validationGlobal -> "GLOBAL"; R.id.validationOceanA -> "OCEAN A"; R.id.validationOceanB -> "OCEAN B"; R.id.validationDateline -> "DATELINE"; R.id.validationWorldWrap -> "WORLD WRAP"; R.id.validationActive -> "ACTIVE"; R.id.validationStatic -> "STATIC"; R.id.validationDisable -> "DISABLE"; R.id.validationEnable -> "ENABLE"; R.id.validationUniformEast -> "UNIFORM EAST"; R.id.validationUniformNorth -> "UNIFORM NORTH"; R.id.validationVortex -> "VORTEX"; R.id.validationAdvanceWindow -> "ADVANCE WINDOW"; else -> "DUPLICATE T1"
+        R.id.validationVisualDefault -> "VIS DEFAULT"; R.id.validationVisualSizeDown -> "SIZE -"; R.id.validationVisualSizeUp -> "SIZE +"; R.id.validationVisualLengthDown -> "LENGTH -"; R.id.validationVisualLengthUp -> "LENGTH +"; R.id.validationVisualOpacityDown -> "OPACITY -"; R.id.validationVisualOpacityUp -> "OPACITY +"; R.id.validationVisualTrailDown -> "TRAIL -"; R.id.validationVisualTrailUp -> "TRAIL +"; R.id.validationVisualFadeDown -> "FADE -"; R.id.validationVisualFadeUp -> "FADE +"; R.id.validationVisualColor -> "COLOR"; R.id.validationParticle256 -> "256"; R.id.validationParticle1024 -> "1K"; R.id.validationParticle4096 -> "4K"; R.id.validationParticle16384 -> "16K"; R.id.validationParticle65536 -> "64K"; R.id.validationParticle262144 -> "256K"; R.id.validationParticle1048576 -> "1M"; R.id.validationGlobal -> "GLOBAL"; R.id.validationOceanA -> "OCEAN A"; R.id.validationOceanB -> "OCEAN B"; R.id.validationDateline -> "DATELINE"; R.id.validationWorldWrap -> "WORLD WRAP"; R.id.validationActive -> "ACTIVE"; R.id.validationStatic -> "STATIC"; R.id.validationDisable -> "DISABLE"; R.id.validationEnable -> "ENABLE"; R.id.validationUniformEast -> "UNIFORM EAST"; R.id.validationUniformNorth -> "UNIFORM NORTH"; R.id.validationVortex -> "VORTEX"; R.id.validationTimeWindow -> "PRODUCTION FEED"; R.id.validationProductionInvalid -> "INVALID PROD"; R.id.validationAdvanceWindow -> "ADVANCE WINDOW"; else -> "DUPLICATE T1"
     }
 
     private fun loadValidationStyle(active: Boolean, enabled: Boolean, reason: String = "STYLE_CHANGE") {
@@ -409,7 +415,7 @@ class ParticleCoreLayerValidationActivity : AppCompatActivity() {
         }
         val source = if (productionFeedMode) {
             """{"type":"raster-array","production-fields":[
-              {"metadata":"asset://integration/particle-production/field-00.json","field":"asset://integration/particle-fixtures/uniform-east/field.f32"},
+              {"metadata":"asset://integration/particle-production/${if (reason == "INVALID_PRODUCTION_METADATA") "field-invalid.json" else "field-00.json"}","field":"asset://integration/particle-fixtures/uniform-east/field.f32"},
               {"metadata":"asset://integration/particle-production/field-01.json","field":"asset://integration/particle-fixtures/uniform-north/field.f32"},
               {"metadata":"asset://integration/particle-production/field-02.json","field":"asset://integration/particle-fixtures/vortex/field.f32"},
               {"metadata":"asset://integration/particle-production/field-03.json","field":"asset://integration/particle-fixtures/uniform-east/field.f32"}
diff --git a/platform/android/MapLibreAndroidTestApp/src/main/res/layout/activity_particle_core_layer_validation.xml b/platform/android/MapLibreAndroidTestApp/src/main/res/layout/activity_particle_core_layer_validation.xml
index ad0e46124..84bdfd51b 100644
--- a/platform/android/MapLibreAndroidTestApp/src/main/res/layout/activity_particle_core_layer_validation.xml
+++ b/platform/android/MapLibreAndroidTestApp/src/main/res/layout/activity_particle_core_layer_validation.xml
@@ -15,7 +15,7 @@
       <Button style="@style/ParticleValidationButton" android:id="@+id/validationActive"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationStatic"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationDisable"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationEnable"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationGlobal"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationOceanA"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationOceanB"/>
       <Button style="@style/ParticleValidationButton" android:id="@+id/validationUniformEast"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationUniformNorth"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVortex"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationTimeWindow"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationMix0"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationMix50"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationMix100"/>
       <Button style="@style/ParticleValidationButton" android:id="@+id/validationParticle256"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationParticle1024"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationParticle4096"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationParticle16384"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationParticle65536"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationParticle262144"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationParticle1048576"/>
-      <Button style="@style/ParticleValidationButton" android:id="@+id/validationAdvanceWindow"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationDuplicateWindow"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualDefault"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualSizeDown"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualSizeUp"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualLengthDown"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualLengthUp"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualOpacityDown"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualOpacityUp"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualTrailDown"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualTrailUp"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualFadeDown"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualFadeUp"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualColor"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationDateline"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationWorldWrap"/>
+      <Button style="@style/ParticleValidationButton" android:id="@+id/validationAdvanceWindow"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationDuplicateWindow"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationProductionInvalid"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualDefault"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualSizeDown"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualSizeUp"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualLengthDown"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualLengthUp"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualOpacityDown"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualOpacityUp"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualTrailDown"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualTrailUp"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualFadeDown"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualFadeUp"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationVisualColor"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationDateline"/><Button style="@style/ParticleValidationButton" android:id="@+id/validationWorldWrap"/>
     </LinearLayout>
   </LinearLayout>
 </androidx.coordinatorlayout.widget.CoordinatorLayout>