diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/runtime_protocol/autonomous_completion.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/runtime_protocol/autonomous_completion.rs
index b077d53be..5785733c9 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/runtime_protocol/autonomous_completion.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/runtime_protocol/autonomous_completion.rs
@@ -563,23 +563,49 @@ fn strip_art_reference_comments(content: &str) -> String {
     output
 }
 
-fn strip_script_blocks(content: &str) -> String {
-    let mut output = String::with_capacity(content.len());
-    let mut cursor = 0;
-    while let Some(start_offset) = content[cursor..].find("<script") {
-        let start = cursor + start_offset;
-        output.push_str(&content[cursor..start]);
-        let Some(open_end_offset) = content[start..].find('>') else {
-            return output;
+fn rendered_html_markup_and_stylesheets(content: &str) -> (String, String) {
+    let lower = content.to_ascii_lowercase();
+    let mut markup = String::with_capacity(content.len());
+    let mut stylesheets = String::new();
+    let mut cursor = 0usize;
+    while let Some(offset) = lower[cursor..].find('<') {
+        let tag_start = cursor + offset;
+        if lower[tag_start..].starts_with("<!--") {
+            cursor = lower[tag_start + 4..]
+                .find("-->")
+                .map(|end| tag_start + 4 + end + 3)
+                .unwrap_or(lower.len());
+            continue;
+        }
+        let Some(tag_after) = html_tag_end(&lower, tag_start) else {
+            break;
         };
-        let body_start = start + open_end_offset + 1;
-        let Some(end_offset) = content[body_start..].find("</script>") else {
-            return output;
-        };
-        cursor = body_start + end_offset + "</script>".len();
+        let tag_end = tag_after - 1;
+        let tag = &lower[tag_start..=tag_end];
+        if html_tag_starts_element(tag, "style") {
+            let Some((close_start, close_end)) =
+                raw_text_html_element_close(&lower, tag_after, "style")
+            else {
+                break;
+            };
+            stylesheets.push_str(&lower[tag_after..close_start]);
+            stylesheets.push('\n');
+            cursor = close_end;
+            continue;
+        }
+        if html_tag_starts_element(tag, "script") {
+            cursor = raw_text_html_element_end(&lower, tag_after, "script");
+            continue;
+        }
+        if let Some(end) = html_non_executable_container_end(&lower, tag, tag_end) {
+            cursor = end;
+            continue;
+        }
+        markup.push_str(tag);
+        markup.push('\n');
+        cursor = tag_after;
     }
-    output.push_str(&content[cursor..]);
-    output
+    (markup, stylesheets)
 }
 
 fn relative_visual_url_resolves_to_asset(value: &str, asset_path: &str) -> bool {
@@ -824,25 +850,19 @@ fn selector_matches_tag(selector: &str, tag: &str) -> bool {
     })
 }
 
-fn tag_is_hidden_by_stylesheet(tag: &str, markup: &str, default_dimensions: (u32, u32)) -> bool {
-    markup.split("<style").skip(1).any(|tail| {
-        let Some(body_start) = tail.find('>').map(|offset| offset + 1) else {
-            return false;
-        };
-        let Some(body_end) = tail[body_start..].find("</style>") else {
-            return false;
-        };
-        tail[body_start..body_start + body_end]
-            .split('}')
-            .any(|rule| {
-                rule.rsplit_once('{')
-                    .is_some_and(|(selector, declarations)| {
-                        selector_matches_tag(selector, tag)
-                            && tag_is_obviously_hidden_or_tiny(
-                                &format!("<div style=\"{declarations}\">"),
-                                default_dimensions,
-                            )
-                    })
+fn tag_is_hidden_by_stylesheet(
+    tag: &str,
+    stylesheets: &str,
+    default_dimensions: (u32, u32),
+) -> bool {
+    stylesheets.split('}').any(|rule| {
+        rule.rsplit_once('{')
+            .is_some_and(|(selector, declarations)| {
+                selector_matches_tag(selector, tag)
+                    && tag_is_obviously_hidden_or_tiny(
+                        &format!("<div style=\"{declarations}\">"),
+                        default_dimensions,
+                    )
             })
     })
 }
@@ -3205,7 +3225,7 @@ fn game_index_visibly_uses_visual_asset(
     };
     let original_content = strip_art_reference_comments(html);
     let heuristic_content = original_content.to_ascii_lowercase();
-    let markup = strip_script_blocks(&heuristic_content);
+    let (markup, stylesheets) = rendered_html_markup_and_stylesheets(&heuristic_content);
 
     let mut tag_cursor = 0;
     while let Some(start_offset) = markup[tag_cursor..].find('<') {
@@ -3217,41 +3237,24 @@ fn game_index_visibly_uses_visual_asset(
         let tag = &markup[start..end];
         if requirement == VisualAssetUsageRequirement::AnyVisible
             && tag_visibly_uses_visual_asset(tag, &asset_path, asset_dimensions)
-            && !tag_is_hidden_by_stylesheet(tag, &markup, asset_dimensions)
+            && !tag_is_hidden_by_stylesheet(tag, &stylesheets, asset_dimensions)
         {
             return true;
         }
         tag_cursor = end;
     }
 
-    let mut style_cursor = 0;
-    while let Some(start_offset) = markup[style_cursor..].find("<style") {
-        let start = style_cursor + start_offset;
-        let Some(open_end_offset) = markup[start..].find('>') else {
-            break;
+    for rule in stylesheets.split('}') {
+        let Some((selector, declarations)) = rule.rsplit_once('{') else {
+            continue;
         };
-        let body_start = start + open_end_offset + 1;
-        let Some(end_offset) = markup[body_start..].find("</style>") else {
-            break;
-        };
-        let body_end = body_start + end_offset;
-        let style = &markup[body_start..body_end];
-        for rule in style.split('}') {
-            let Some((selector, declarations)) = rule.rsplit_once('{') else {
-                continue;
-            };
-            if requirement == VisualAssetUsageRequirement::AnyVisible
-                && css_contains_resolving_url(declarations, &asset_path)
-                && selector_is_bound_to_markup(selector, &markup)
-                && !tag_is_obviously_hidden_or_tiny(
-                    &format!("<div style=\"{declarations}\">"),
-                    (0, 0),
-                )
-            {
-                return true;
-            }
+        if requirement == VisualAssetUsageRequirement::AnyVisible
+            && css_contains_resolving_url(declarations, &asset_path)
+            && selector_is_bound_to_markup(selector, &markup)
+            && !tag_is_obviously_hidden_or_tiny(&format!("<div style=\"{declarations}\">"), (0, 0))
+        {
+            return true;
         }
-        style_cursor = body_end + "</style>".len();
     }
 
     let Some(canvas_dimensions) = markup.split('>').find_map(|tag| {
@@ -3260,7 +3263,7 @@ fn game_index_visibly_uses_visual_asset(
             .starts_with("canvas");
         (is_canvas
             && !tag_is_obviously_hidden_or_tiny(tag, (300, 150))
-            && !tag_is_hidden_by_stylesheet(tag, &markup, (300, 150)))
+            && !tag_is_hidden_by_stylesheet(tag, &stylesheets, (300, 150)))
         .then(|| {
             (
                 tag_dimension(tag, "width", "width").unwrap_or(300.0),
@@ -4548,7 +4551,7 @@ fn executable_javascript_from_html(content: &str) -> String {
         .into_iter()
         .filter_map(|source| match source {
             ExecutableClassicScriptSource::Inline(body) => Some(body),
-            ExecutableClassicScriptSource::External(_) => None,
+            ExecutableClassicScriptSource::External { .. } => None,
         })
         .fold(String::new(), |mut executable, body| {
             executable.push_str(&body);
@@ -4560,7 +4563,17 @@ fn executable_javascript_from_html(content: &str) -> String {
 #[derive(Clone, Debug, Eq, PartialEq)]
 enum ExecutableClassicScriptSource {
     Inline(String),
-    External(String),
+    External {
+        source: String,
+        timing: ClassicExternalScriptTiming,
+    },
+}
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+enum ClassicExternalScriptTiming {
+    ParserBlocking,
+    Deferred,
+    Async,
 }
 
 fn executable_classic_script_sources_from_html(
@@ -4605,9 +4618,17 @@ fn executable_classic_script_sources_from_html(
                 if let Some(source) = html_attribute_value(tag, "src") {
                     let value_offset = source.as_ptr() as usize - tag.as_ptr() as usize;
                     let original_tag = &content[tag_start..=tag_end];
-                    executable.push(ExecutableClassicScriptSource::External(
-                        original_tag[value_offset..value_offset + source.len()].to_string(),
-                    ));
+                    let timing = if html_has_attribute(tag, "async") {
+                        ClassicExternalScriptTiming::Async
+                    } else if html_has_attribute(tag, "defer") {
+                        ClassicExternalScriptTiming::Deferred
+                    } else {
+                        ClassicExternalScriptTiming::ParserBlocking
+                    };
+                    executable.push(ExecutableClassicScriptSource::External {
+                        source: original_tag[value_offset..value_offset + source.len()].to_string(),
+                        timing,
+                    });
                 }
             } else {
                 let body = &content[body_start..close_start];
@@ -8218,6 +8239,19 @@ pub(in crate::agent) fn read_external_gameplay_javascript_at(
     let mut total_bytes = 0_u64;
     let mut pending = std::collections::VecDeque::new();
     let classic_script_sources = executable_classic_script_sources_from_html(html);
+    if classic_script_sources.iter().any(|source| {
+        matches!(
+            source,
+            ExecutableClassicScriptSource::External {
+                timing: ClassicExternalScriptTiming::Async,
+                ..
+            }
+        )
+    }) {
+        return Err(
+            "自主构建 classic async 外部脚本执行顺序不可静态证明，视觉门失败关闭".to_string(),
+        );
+    }
     let mut classic_external_contents = BTreeMap::<String, String>::new();
     let mut module_contents = std::collections::BTreeMap::<String, String>::new();
     let mut module_analyses = BTreeMap::<String, JavascriptModuleAnalysis>::new();
@@ -8574,11 +8608,14 @@ pub(in crate::agent) fn read_external_gameplay_javascript_at(
             break;
         }
     }
-    let mut classic_ordered_unit = String::new();
+    let mut parser_blocking_classic_unit = String::new();
+    let mut deferred_classic_unit = String::new();
     for source in classic_script_sources {
-        let script = match source {
-            ExecutableClassicScriptSource::Inline(script) => script,
-            ExecutableClassicScriptSource::External(source) => {
+        let (script, timing) = match source {
+            ExecutableClassicScriptSource::Inline(script) => {
+                (script, ClassicExternalScriptTiming::ParserBlocking)
+            }
+            ExecutableClassicScriptSource::External { source, timing } => {
                 let local_path = local_gameplay_script_path_from(None, &source)
                     .ok_or_else(|| format!("自主构建外部脚本路径不受支持：{source}"))?;
                 let Some(script) = classic_external_contents.get(&local_path) else {
@@ -8586,13 +8623,19 @@ pub(in crate::agent) fn read_external_gameplay_javascript_at(
                 };
                 output.classic_global.push_str(script);
                 output.classic_global.push('\n');
-                script.clone()
+                (script.clone(), timing)
             }
         };
-        classic_ordered_unit.push_str(&script);
-        classic_ordered_unit.push('\n');
+        let unit = match timing {
+            ClassicExternalScriptTiming::ParserBlocking => &mut parser_blocking_classic_unit,
+            ClassicExternalScriptTiming::Deferred => &mut deferred_classic_unit,
+            ClassicExternalScriptTiming::Async => unreachable!("async rejected before loading"),
+        };
+        unit.push_str(&script);
+        unit.push('\n');
     }
-    output.classic_ordered_unit = Some(classic_ordered_unit);
+    parser_blocking_classic_unit.push_str(&deferred_classic_unit);
+    output.classic_ordered_unit = Some(parser_blocking_classic_unit);
     validate_javascript_module_links(&module_analyses)?;
     output
         .module_units
@@ -11062,6 +11105,122 @@ mod visible_destination_tests {
         ));
     }
 
+    #[test]
+    fn canvas_scan_ignores_inert_and_raw_text_container_decoys() {
+        let root = tempfile::tempdir().expect("create inert canvas fixture");
+        let drawing_script = r#"<script>
+            const context=document.querySelector('canvas').getContext('2d');
+            const art=new Image();
+            art.src='../assets/art-spec.png';
+            context.drawImage(art,0,0,64,64);
+        </script>"#;
+        for (open, close) in [
+            ("<template>", "</template>"),
+            ("<textarea>", "</textarea>"),
+            ("<noscript>", "</noscript>"),
+            ("<style>", "</style>"),
+            ("<title>", "</title>"),
+            ("<xmp>", "</xmp>"),
+            ("<iframe>", "</iframe>"),
+            ("<noembed>", "</noembed>"),
+        ] {
+            let html = format!(
+                "<!doctype html><html><body>{open}<canvas width=320 height=180></canvas>{close}{drawing_script}</body></html>"
+            );
+            assert!(
+                !game_index_visibly_uses_visual_asset(
+                    root.path(),
+                    html.as_bytes(),
+                    "assets/art-spec.png",
+                    (64, 64),
+                    VisualAssetUsageRequirement::CanvasDraw,
+                ),
+                "{open} content must not provide a visible canvas",
+            );
+        }
+
+        let plaintext = format!(
+            "<!doctype html><html><body>{drawing_script}<plaintext><canvas width=320 height=180></canvas></body></html>"
+        );
+        assert!(!game_index_visibly_uses_visual_asset(
+            root.path(),
+            plaintext.as_bytes(),
+            "assets/art-spec.png",
+            (64, 64),
+            VisualAssetUsageRequirement::CanvasDraw,
+        ));
+
+        let inert_stylesheet = format!(
+            "<!doctype html><html><body><template><style>canvas{{display:none}}</style></template><canvas width=320 height=180></canvas>{drawing_script}</body></html>"
+        );
+        assert!(game_index_visibly_uses_visual_asset(
+            root.path(),
+            inert_stylesheet.as_bytes(),
+            "assets/art-spec.png",
+            (64, 64),
+            VisualAssetUsageRequirement::CanvasDraw,
+        ));
+
+        let active_stylesheet = format!(
+            "<!doctype html><html><head><style>canvas{{display:none}}</style></head><body><canvas width=320 height=180></canvas>{drawing_script}</body></html>"
+        );
+        assert!(!game_index_visibly_uses_visual_asset(
+            root.path(),
+            active_stylesheet.as_bytes(),
+            "assets/art-spec.png",
+            (64, 64),
+            VisualAssetUsageRequirement::CanvasDraw,
+        ));
+    }
+
+    #[test]
+    fn deferred_classic_external_script_does_not_execute_before_following_inline_script() {
+        let root = tempfile::tempdir().expect("create deferred classic fixture");
+        fs::create_dir_all(root.path().join("game")).expect("create game directory");
+        fs::write(
+            root.path().join("game/render.js"),
+            "renderFrame=()=>context.drawImage(art,0,0,64,64);",
+        )
+        .expect("write deferred classic script");
+        let html = br#"<!doctype html><html><body>
+            <canvas width=320 height=180></canvas>
+            <script>const context=document.querySelector('canvas').getContext('2d');const art=new Image();art.src='../assets/art-spec.png';let renderFrame;</script>
+            <script defer src="./render.js"></script>
+            <script>renderFrame();</script>
+        </body></html>"#;
+        assert!(!game_index_visibly_uses_visual_asset(
+            root.path(),
+            html,
+            "assets/art-spec.png",
+            (64, 64),
+            VisualAssetUsageRequirement::CanvasDraw,
+        ));
+    }
+
+    #[test]
+    fn async_classic_external_script_fails_closed_when_order_is_not_provable() {
+        let root = tempfile::tempdir().expect("create async classic fixture");
+        fs::create_dir_all(root.path().join("game")).expect("create game directory");
+        fs::write(
+            root.path().join("game/render.js"),
+            "renderFrame=()=>context.drawImage(art,0,0,64,64);",
+        )
+        .expect("write async classic script");
+        let html = br#"<!doctype html><html><body>
+            <canvas width=320 height=180></canvas>
+            <script>const context=document.querySelector('canvas').getContext('2d');const art=new Image();art.src='../assets/art-spec.png';let renderFrame;</script>
+            <script async src="./render.js"></script>
+            <script>renderFrame();</script>
+        </body></html>"#;
+        assert!(!game_index_visibly_uses_visual_asset(
+            root.path(),
+            html,
+            "assets/art-spec.png",
+            (64, 64),
+            VisualAssetUsageRequirement::CanvasDraw,
+        ));
+    }
+
     #[test]
     fn esm_dependency_initialization_precedes_importer_evaluation() {
         let root = tempfile::tempdir().expect("create ESM evaluation order fixture");
diff --git a/docs/project-memory/shared-memory/decision-log.md b/docs/project-memory/shared-memory/decision-log.md
index 71e6c105f..f2bfb7407 100644
--- a/docs/project-memory/shared-memory/decision-log.md
+++ b/docs/project-memory/shared-memory/decision-log.md
@@ -5999,5 +5999,6 @@
 ## 2026-08-04 静态视觉门脚本与 ESM 求值顺序
 
 - HTML 输入只在非 raw-text 区域屏蔽真正的 `<!-- -->` 注释；`script / style` 等 raw-text 原文保持逐字不变，再交给各自 parser / semantic 处理。禁止在整份 HTML 上按文本删除 `//` 或 `/* */`，否则字符串中的 `https://`、路径和注释形状会被破坏；HTML 注释内的标签、脚本和素材路径仍不得形成视觉证据。
-- classic script 分析单元按 `game/index.html` 的真实标签顺序交错组合 inline 与本地 external 正文；带 `src` 标签的 inline body 继续忽略。外部文件仍执行可信普通文件、`game/` 边界、文件数与累计体积门禁，重复标签按浏览器出现次数保留求值位置。
+- classic script 分析单元把 inline 与无 `defer / async` 的本地 external 正文按 `game/index.html` 标签顺序交错组成 parser-blocking 段，再把 classic external `defer` 按文档顺序放到解析完成后的 deferred 段；不得把 defer-before-inline 误投影为外链先执行。classic external `async` 的下载完成顺序不可静态证明，当前静态门直接失败关闭。带 `src` 标签的 inline body 继续忽略；外部文件仍执行可信普通文件、`game/` 边界、文件数与累计体积门禁，重复标签按浏览器出现次数保留求值位置。
+- Canvas 尺寸、可见性、元素绑定和 stylesheet 选择器扫描只消费浏览器可渲染标记；`template / textarea / noscript / title / style / xmp / iframe / noembed / plaintext` 内的 Canvas、标签和样式诱饵全部跳过。活动顶层 stylesheet 与可见标记分开提取，既允许真实 CSS 参与隐藏/尺寸判断，也不把 CSS raw-text 中的伪标签当作 DOM。
 - ESM 组合单元按 dependency 初始化先于 importer 顶层求值排列。import reference 的 span replacement 仍基于原 importer 完成，随后把已闭包的 dependency projection 放在 importer 前并对最终单元重跑 parser、semantic、单元 `2 MiB` 与累计投影 `32 MiB` 门禁；循环模块继续按 `(origin module, original root binding)` canonical identity 去重并要求有界固定点收敛。
diff --git a/docs/technical/【技术方案】AI游戏创作智能体App实施计划-2026-06-24.md b/docs/technical/【技术方案】AI游戏创作智能体App实施计划-2026-06-24.md
index 2fceaea3e..c3dd28dad 100644
--- a/docs/technical/【技术方案】AI游戏创作智能体App实施计划-2026-06-24.md
+++ b/docs/technical/【技术方案】AI游戏创作智能体App实施计划-2026-06-24.md
@@ -842,7 +842,7 @@ game-project/
 - tool-plan 成功响应落账前，对内置 Runtime 原生函数与 legacy wrapper 的合法、无重复 key JSON arguments 按工具 schema 的精确位置做项目路径 canonicalization：`file.*.path`、`project.patchset.changes[*].path`、`project.git_commit.paths[*]`、`command.*.cwd`、`image.inspect.paths[*]` 与 `canvas.asset_generate.outputPath` 若是当前项目根目录内的完整绝对路径，转换为 `/` 分隔的项目相对路径后再校验、持久化并执行；源码/叙述字段、任务产物描述、动态 MCP arguments 和项目外绝对路径不得改写，后两者继续由绝对路径门禁失败关闭。项目根只允许搜索/列举范围与命令 cwd 规范化为 `.`，不能成为文件目标。当前进程与重启恢复都必须从同一份规范化 handoff 重放，禁止分别执行原响应和持久响应。
 
 - 循环 ESM 的投影身份固定为 `(origin module, original root binding)`；canonical 重命名只改变组合单元中的展示名，身份随投影闭包传播。删除已存在的回流声明后仍必须把 import 引用改接到 importer 中同一身份的既有 canonical；固定点未在“模块数 + 1”轮内收敛时失败关闭，不能返回最后一轮仍变化的部分结果。inline module 必须先提取原文并计入与外部脚本共享的累计源码 `2 MiB` 上限，再执行语法和语义校验；超限源码不能因无效语法被过滤，小型无效模块也必须明确失败关闭。
-- HTML 静态门只屏蔽 raw-text 容器之外的真正 HTML 注释，`script / style` 原文必须逐字交给对应 parser；禁止对整份 HTML 做非词法 `//`、`/* */` 删除，字符串中的 `https://`、路径和注释形状不能被截断，HTML 注释诱饵仍不得进入标签或脚本证据。classic inline 与 external 脚本按 HTML 标签出现顺序组成同一个 global 分析单元，带 `src` 的标签忽略 inline body，不能把所有 inline 提前到 external 之前。
+- HTML 静态门只屏蔽 raw-text 容器之外的真正 HTML 注释，`script / style` 原文必须逐字交给对应 parser；禁止对整份 HTML 做非词法 `//`、`/* */` 删除，字符串中的 `https://`、路径和注释形状不能被截断，HTML 注释诱饵仍不得进入标签或脚本证据。Canvas 尺寸、可见性、元素绑定和 stylesheet 选择器扫描只读取浏览器可渲染标记，必须完整跳过 `template / textarea / noscript / title / style / xmp / iframe / noembed / plaintext` 的标签诱饵；活动顶层 stylesheet 独立提取，不能借用 inert 容器中的样式或把 CSS raw-text 当 HTML 标签。classic inline 与无 `defer / async` 的 external 脚本按 HTML 标签出现顺序组成 parser-blocking global 段；classic external `defer` 必须在解析阻塞段之后按文档顺序求值，不能提前到标签之后的 inline 前，`async` 因下载完成顺序不可静态证明而失败关闭。带 `src` 的标签忽略 inline body，普通脚本顺序不得退化。
 - ESM 投影的最终组合顺序必须反映 dependency 先初始化、importer 后求值：先在原 importer 坐标上完成 import reference span replacement，再把依赖闭包投影放到 importer 顶层正文之前，使 dependency 在声明后安装的 function-valued export 能被 importer 调用看见。最终单元继续重跑 parser / semantic 和单元 `2 MiB`、累计投影 `32 MiB` 门禁；canonical identity、循环回接去重与有界固定点规则不因顺序调整而放宽。
 
 ## 2026-07-31 长耗时与恢复收口