diff --git a/text8.txt b/text8.txt
index 8c0a63e..db3d561 100644
--- a/text8.txt
+++ b/text8.txt
@@ -900,3 +900,56 @@ host_wasm_opfs_browser_smokes=ok
 custom session saved parameter/tool-table readback blocks 是否还能统一为
 `verifyOpfsReadback(...)` 或已有 saved-text helper 调用；只改测试胶水，不改变
 custom filename 输入、OPFS path、WASM path 字符串或保存/读取行为。
+
+二十一、2026-06-14 继续执行记录：browser OPFS custom session readback helper guard
+
+本轮按上一条下一步建议继续收敛 custom session saved parameter/tool-table readback
+blocks，范围仍只触及 `wasm-port/tests/browser/interp_smoke.html` 的 browser/OPFS test
+glue。
+
+完成内容：
+
+- 将 INI-named session 的 saved parameter backup readback 改为复用
+  `verifyOpfsReadback(...)`；
+- 将 INI-named session 的 saved tool-table readback 改为复用
+  `verifyOpfsReadback(...)`；
+- 将 explicit session 的 saved parameter、parameter backup、tool-table readback
+  改为复用 `verifyOpfsReadback(...)`；
+- 所有 readback 仍通过 `verifyExpectedOutput(...)` 做精确文本校验；
+- custom parameter/tool-table filename 输入、OPFS path、WASM path 字符串与
+  save/read 行为均未改变；
+- 未改变 staging path 模型、OPFS bridge behavior、file-service、SDK planner、
+  interpreter、INI、tool、parameter 或 LinuxCNC-owned runtime semantics。
+
+验证已通过：
+
+```bash
+git diff --check
+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_interp_wasm.sh
+SKIP_INTERP_BUILD=1 wasm-port/tests/wasm/node/verify_sim_configs_inventory_wasm.sh
+wasm-port/tests/host/verify_host_smokes.sh
+```
+
+关键输出：
+
+```text
+browser_interp_smoke=ok
+vendor sync up to date
+standalone CNC semantics guard complete
+interp_wasm_node_smoke=ok
+sim_configs_wasm_node_inventory_executed=28
+sim_configs_wasm_node_inventory_passed=28
+sim_configs_wasm_node_inventory_skipped=131
+sim_configs_wasm_node_inventory_unexpected_fail=0
+host_wasm_opfs_browser_smokes=ok
+```
+
+下一步建议：
+
+继续小批量 browser OPFS test glue guard。优先扫描 `interp_smoke.html` 中
+custom session load/save blocks 的 expected output arrays 是否还有重复的
+parameter/tool-table key lines 可安全抽成局部常量或小 helper；只改测试胶水，保持
+精确文本校验，不改变 custom filename 输入、OPFS path、WASM path 字符串或保存/读取行为。
diff --git a/wasm-port/tests/browser/interp_smoke.html b/wasm-port/tests/browser/interp_smoke.html
index da89dd6..4856939 100644
--- a/wasm-port/tests/browser/interp_smoke.html
+++ b/wasm-port/tests/browser/interp_smoke.html
@@ -9560,9 +9560,9 @@
           "5399\t199.000000",
         ],
       );
-      await verifyOpfsSavedText(
+      await verifyOpfsReadback(
         "opfs_saved_ini_named_parameter_backup_text",
-        () => loadTextFile(savedIniNamedParameters.backupOpfsPath),
+        savedIniNamedParameters.backupOpfsPath,
         [
           "5161 31.25",
           "5162 62.5",
@@ -9606,9 +9606,9 @@
           "tool_1.pocketno=8",
         ],
       );
-      await verifyOpfsSavedText(
+      await verifyOpfsReadback(
         "opfs_saved_ini_named_tool_table_text",
-        () => loadTextFile(loadedIniFileSession.toolTable.opfsPath),
+        loadedIniFileSession.toolTable.opfsPath,
         [
           "T8",
           "P8",
@@ -9740,9 +9740,9 @@
           "parameter_5399=202",
         ],
       );
-      await verifyOpfsSavedText(
+      await verifyOpfsReadback(
         "opfs_saved_explicit_parameter_text",
-        () => loadTextFile(loadedIniOverrideSession.parameters.opfsPath),
+        loadedIniOverrideSession.parameters.opfsPath,
         [
           "5161\t51.250000",
           "5162\t102.500000",
@@ -9750,9 +9750,9 @@
           "5399\t202.000000",
         ],
       );
-      await verifyOpfsSavedText(
+      await verifyOpfsReadback(
         "opfs_saved_explicit_parameter_backup_text",
-        () => loadTextFile(savedExplicitParameters.backupOpfsPath),
+        savedExplicitParameters.backupOpfsPath,
         [
           "5161 41.25",
           "5162 82.5",
@@ -9784,9 +9784,9 @@
           "tool_1.pocketno=9",
         ],
       );
-      await verifyOpfsSavedText(
+      await verifyOpfsReadback(
         "opfs_saved_explicit_tool_table_text",
-        () => loadTextFile(loadedIniOverrideSession.toolTable.opfsPath),
+        loadedIniOverrideSession.toolTable.opfsPath,
         [
           "T9",
           "P9",