diff --git a/apps/ai-game-creator-shell/src-tauri/Cargo.lock b/apps/ai-game-creator-shell/src-tauri/Cargo.lock
index 89a23f4f5..561fbacb0 100644
--- a/apps/ai-game-creator-shell/src-tauri/Cargo.lock
+++ b/apps/ai-game-creator-shell/src-tauri/Cargo.lock
@@ -725,16 +725,6 @@ dependencies = [
  "url",
 ]
 
-[[package]]
-name = "core-foundation"
-version = "0.9.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91e195e091a93c46f7102ec7818a2aa394e1e1771c3ab4825963fa03e45afb8f"
-dependencies = [
- "core-foundation-sys",
- "libc",
-]
-
 [[package]]
 name = "core-foundation"
 version = "0.10.1"
@@ -758,7 +748,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "064badf302c3194842cf2c5d61f56cc88e54a759313879cdf03abdd27d0c3b97"
 dependencies = [
  "bitflags 2.13.0",
- "core-foundation 0.10.1",
+ "core-foundation",
  "core-graphics-types",
  "foreign-types 0.5.0",
  "libc",
@@ -771,7 +761,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d44a101f213f6c4cdc1853d4b78aef6db6bdfa3468798cc1d9912f4735013eb"
 dependencies = [
  "bitflags 2.13.0",
- "core-foundation 0.10.1",
+ "core-foundation",
  "libc",
 ]
 
@@ -2090,11 +2080,9 @@ dependencies = [
  "percent-encoding",
  "pin-project-lite",
  "socket2",
- "system-configuration",
  "tokio",
  "tower-service",
  "tracing",
- "windows-registry",
 ]
 
 [[package]]
@@ -4396,7 +4384,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b7f4bc775c73d9a02cde8bf7b2ec4c9d12743edf609006c7facc23998404cd1d"
 dependencies = [
  "bitflags 2.13.0",
- "core-foundation 0.10.1",
+ "core-foundation",
  "core-foundation-sys",
  "libc",
  "security-framework-sys",
@@ -4952,27 +4940,6 @@ dependencies = [
  "syn 2.0.118",
 ]
 
-[[package]]
-name = "system-configuration"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a13f3d0daba03132c0aa9767f98351b3488edc2c100cda2d2ec2b04f3d8d3c8b"
-dependencies = [
- "bitflags 2.13.0",
- "core-foundation 0.9.4",
- "system-configuration-sys",
-]
-
-[[package]]
-name = "system-configuration-sys"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e1d1b10ced5ca923a1fcb8d03e96b8d3268065d724548c0211415ff6ac6bac4"
-dependencies = [
- "core-foundation-sys",
- "libc",
-]
-
 [[package]]
 name = "system-deps"
 version = "6.2.2"
@@ -4994,7 +4961,7 @@ checksum = "d1c93047acf68669466a34690ac58cca7010bd1b201e1ec86f1fd0a75d3dd4a9"
 dependencies = [
  "bitflags 2.13.0",
  "block2",
- "core-foundation 0.10.1",
+ "core-foundation",
  "core-graphics",
  "crossbeam-channel",
  "dbus",
diff --git a/apps/ai-game-creator-shell/src-tauri/Cargo.toml b/apps/ai-game-creator-shell/src-tauri/Cargo.toml
index 06aad7379..7c004e627 100644
--- a/apps/ai-game-creator-shell/src-tauri/Cargo.toml
+++ b/apps/ai-game-creator-shell/src-tauri/Cargo.toml
@@ -41,7 +41,7 @@ reqwest = { version = "0.12", default-features = false, features = ["json", "nat
 shared-contracts = { path = "../../../server-rs/crates/shared-contracts", default-features = false }
 tauri = { version = "2.11.2", features = [] }
 tauri-plugin-dialog = "2.7.1"
-tauri-plugin-http = "2.5.9"
+tauri-plugin-http = { version = "2.5.9", default-features = false, features = ["charset", "cookies", "http2", "rustls-tls"] }
 tauri-plugin-opener = "2"
 tempfile = "3"
 tokio = { version = "1", features = ["io-util", "macros", "process", "rt-multi-thread", "signal", "sync", "time"] }
diff --git a/docs/project-memory/shared-memory/decision-log.md b/docs/project-memory/shared-memory/decision-log.md
index 5120c447a..6b764c1a9 100644
--- a/docs/project-memory/shared-memory/decision-log.md
+++ b/docs/project-memory/shared-memory/decision-log.md
@@ -7015,4 +7015,5 @@
 - 元数据决策：首次导入只创建并保留项目根下的 `.agent/manifest.json`、`.agent/agent.db`、`.agent/logs/` 与 `.agent/runtime/`；不得创建默认 Web 原型的 `game/`、`assets/`、`memory/`、`exports/`。已有有效 `.agent` 项目只读复用身份，不覆盖 manifest。
 - Windows 锁文件决策：提升权限进程新建 `.agent/.manifest.json.lock` 时，Windows 可能把 owner 设为 `Administrators`。仅在固定锁路径已取得不共享独占句柄并确认是普通、非 reparse、单链接文件后，才初始化为当前 `TokenUser`；随后再次复核句柄并执行原有 owner/DACL 校验，不放宽既有异常对象的安全规则。
 - Provider Schema 决策：`agent.route_manifest.missingAssetSlots` 不再广告 OpenAI-compatible 代理拒绝的 `uniqueItems`；Runtime 继续排序去重，Schema 子集门禁新增该关键字，真实 Provider smoke 必须在发布前证明工具目录可被接受。
+- HTTP 传输边界：根 H5 包不得依赖 Tauri guest 插件；AGC 独立包保留 `@tauri-apps/plugin-http`。Rust 插件显式关闭默认特性，只启用 `charset`、`cookies`、`http2` 和 `rustls-tls`，避免 `reqwest/system-proxy` 通过 Cargo feature union 把画布、Provider、Runtime 与本地回环夹具统一接入 OS 自动系统代理；如未来产品要求正式客户端继承系统代理，必须按各客户端明确设计并单独完成跨平台验证。
 - 运行决策：Godot 项目提交给 Project Supervisor 时使用 `standard` Run Profile，避免触发 Web 专用 `game/index.html`、HTTP preview 与自主 Web 完成门。Godot 编辑器启动和内嵌运行预览不在本切片范围。
diff --git a/scripts/check-native-shells.mjs b/scripts/check-native-shells.mjs
index d72d444ac..9bcc538b7 100644
--- a/scripts/check-native-shells.mjs
+++ b/scripts/check-native-shells.mjs
@@ -2385,11 +2385,13 @@ function assertAiGameCreatorShellUserDevBoundary() {
     );
   }
   if (
-    !aiGameCreatorCargoManifestSource.includes('tauri-plugin-http = "2.5.9"') ||
+    !aiGameCreatorCargoManifestSource.includes(
+      'tauri-plugin-http = { version = "2.5.9", default-features = false, features = ["charset", "cookies", "http2", "rustls-tls"] }',
+    ) ||
     !aiGameCreatorShellTauriSource.includes('tauri_plugin_http::init()')
   ) {
     throw new Error(
-      'AI game creator release must register the native HTTP plugin',
+      'AI game creator release must register the native HTTP plugin without the OS automatic system-proxy feature',
     );
   }
   if (