diff --git a/text6.txt b/text6.txt
index 19a6875..5f77a1f 100644
--- a/text6.txt
+++ b/text6.txt
@@ -1116,3 +1116,49 @@ wasm-port/tests/host/verify_host_smokes.sh
 `writeInterpRegressionFile(...)` families，例如 `bad`、`good`、`g71/g72` 或
 `rotation` 的 aggregate direct-file guard。继续避免 blocked runtime promotion、
 browser full inventory 扩面和 JS CNC 语义实现。
+
+二十七、2026-06-13 继续执行记录：m98m99 mixed-sub-style staging guard
+
+本批完成 m98m99 最后一个显性 aggregate slice 的收束，将
+`m98m99/06-error-mixed-sub-styles` 改为 fixed manifest 加 per-directory staged path
+guard。
+
+完成内容：
+
+- Node 侧新增 `m98m99MixedSubStyleFiles` fixed manifest，包含该目录 4 个 `.ngc`
+  fixture；
+- Node 侧改用 `writeInterpRegressionFiles(...)` 一次 staging 该目录；
+- Node 侧复用 `assertInterpRegressionStaging(...)`，用 upstream vendored `.ngc`
+  文件清单与 fixed manifest 精确对账；
+- Node 侧移除最后的 m98m99 mixed aggregate slice；
+- browser 侧新增同名 fixed manifest；
+- browser 侧复用 `assertInterpRegressionStaging(...)` 检查 duplicate-free 与 staged path；
+- browser 侧仍不枚举目录；
+- 仅整理 host/filesystem staging guard，不改变 mixed Fanuc/RS274NGC sub-style 错误语义。
+
+已运行验证：
+
+```bash
+git diff --check
+SKIP_INTERP_BUILD=1 wasm-port/tests/wasm/node/verify_interp_wasm.sh
+SKIP_INI_BUILD=1 SKIP_INTERP_BUILD=1 wasm-port/tests/browser/verify_interp_browser.sh
+wasm-port/tools/verify_vendor_sync.sh
+wasm-port/tools/verify_no_standalone_cnc_semantics.sh
+SKIP_INTERP_BUILD=1 wasm-port/tests/wasm/node/verify_sim_configs_inventory_wasm.sh
+wasm-port/tests/host/verify_host_smokes.sh
+```
+
+结果：全部通过。
+
+下一步建议：
+
+m98m99 direct-file 与目录级 staging guard 已基本收束。下一批建议转向其他
+`writeInterpRegressionFile(...)` aggregate direct-file family，小批量优先候选：
+
+- `rotation/abs-pts`
+- `rotation/g28`
+- `rotation/g53`
+
+这三个已有 Node/browser coverage 且属于同一 direct-file family，适合复用
+`assertInterpRegressionFileStaging(...)` 替换当前 rotation aggregate slice。继续避免
+blocked runtime promotion、browser full inventory 扩面和 JS CNC 语义实现。
diff --git a/wasm-port/tests/browser/interp_smoke.html b/wasm-port/tests/browser/interp_smoke.html
index f8b675c..5b266e1 100644
--- a/wasm-port/tests/browser/interp_smoke.html
+++ b/wasm-port/tests/browser/interp_smoke.html
@@ -7992,7 +7992,22 @@
         ].join("\n"),
       );
 
-      const m98m99MixedSubStylePaths = [];
+      const m98m99MixedSubStyleFiles = [
+        "O...-called-with-O..._call.ngc",
+        "O...-ended-with-O..._endsub.ngc",
+        "O...-sub-called-with-M98.ngc",
+        "O...-sub-ended-with-M99.ngc",
+      ];
+      const m98m99MixedSubStyleDir = await writeInterpRegressionFiles(
+        interp,
+        "m98m99/06-error-mixed-sub-styles",
+        m98m99MixedSubStyleFiles,
+      );
+      assertInterpRegressionStaging(
+        "m98m99/06-error-mixed-sub-styles",
+        m98m99MixedSubStyleFiles,
+        m98m99MixedSubStyleDir,
+      );
       for (const mixedSubStyleFixture of [
         {
           name: "called_with_o_call",
@@ -8037,12 +8052,7 @@
           print: "X FANUC",
         },
       ]) {
-        const mixedSubStylePath = await writeInterpRegressionFile(
-          interp,
-          "m98m99/06-error-mixed-sub-styles",
-          mixedSubStyleFixture.file,
-        );
-        m98m99MixedSubStylePaths.push(mixedSubStylePath);
+        const mixedSubStylePath = `${m98m99MixedSubStyleDir}/${mixedSubStyleFixture.file}`;
         const mixedSubStyleRun = runWithCapturedPrints(() =>
           interp.runFile(mixedSubStylePath),
         );
@@ -8069,12 +8079,6 @@
           );
         }
       }
-      const m98m99MixedStagedNgcFiles = [
-        ...m98m99MixedSubStylePaths,
-      ].map((path) => path.replace("/work/browser-interp/m98m99/", ""));
-      if (m98m99MixedStagedNgcFiles.join(",") !== m98m99RegressionFiles.slice(5, 9).join(",")) {
-        throw new Error("browser_interp_m98m99_mixed_staging_manifest: list drift");
-      }
 
       const m98m99NestedSubsPath = await writeInterpRegressionFile(
         interp,
diff --git a/wasm-port/tests/wasm/node/verify_interp_wasm.mjs b/wasm-port/tests/wasm/node/verify_interp_wasm.mjs
index efc7d34..2c5d3c5 100644
--- a/wasm-port/tests/wasm/node/verify_interp_wasm.mjs
+++ b/wasm-port/tests/wasm/node/verify_interp_wasm.mjs
@@ -2977,7 +2977,21 @@ verifyExpectedOutput(
   ].join("\n"),
 );
 
-const m98m99MixedSubStylePaths = [];
+const m98m99MixedSubStyleFiles = [
+  "O...-called-with-O..._call.ngc",
+  "O...-ended-with-O..._endsub.ngc",
+  "O...-sub-called-with-M98.ngc",
+  "O...-sub-ended-with-M99.ngc",
+];
+const m98m99MixedSubStyleDir = writeInterpRegressionFiles(
+  "m98m99/06-error-mixed-sub-styles",
+  m98m99MixedSubStyleFiles,
+);
+assertInterpRegressionStaging(
+  "m98m99/06-error-mixed-sub-styles",
+  m98m99MixedSubStyleFiles,
+  m98m99MixedSubStyleDir,
+);
 for (const mixedSubStyleFixture of [
   {
     name: "called_with_o_call",
@@ -3022,11 +3036,7 @@ for (const mixedSubStyleFixture of [
     print: "X FANUC",
   },
 ]) {
-  const mixedSubStylePath = writeInterpRegressionFile(
-    "m98m99/06-error-mixed-sub-styles",
-    mixedSubStyleFixture.file,
-  );
-  m98m99MixedSubStylePaths.push(mixedSubStylePath);
+  const mixedSubStylePath = `${m98m99MixedSubStyleDir}/${mixedSubStyleFixture.file}`;
   const mixedSubStyleRun = runWithCapturedPrints(() => interp.runFile(mixedSubStylePath));
   verifyExpectedOutput(
     `interp_m98m99_06_${mixedSubStyleFixture.name}_wasm`,
@@ -3051,13 +3061,6 @@ for (const mixedSubStyleFixture of [
     );
   }
 }
-assert.deepEqual(
-  m98m99MixedSubStylePaths,
-  m98m99RegressionFiles
-    .slice(5, 9)
-    .map((file) => `/work/interp/m98m99/${file}`),
-  "interp m98m99 mixed direct-file staging manifest drift",
-);
 
 const m98m99NestedSubsPath = writeInterpRegressionFile("m98m99/07-nested-subs", "test.ngc");
 assertInterpRegressionFileStaging("m98m99/07-nested-subs", "test.ngc", m98m99NestedSubsPath);