diff --git a/text10.txt b/text10.txt
index 335a7d7..4a8d7aa 100644
--- a/text10.txt
+++ b/text10.txt
@@ -230,6 +230,60 @@ groups，重点检查 `saveMachineTextFiles(...)` 相关输入是否已有可复
 - 把 save API 输入对象提成无用常量；
 - 触碰 runtime、SDK、OPFS bridge 或 LinuxCNC-owned semantics。
 
+二、2026-06-14 继续执行记录：browser OPFS session snapshot manifest helper
+
+本轮按“暂停性能测试，进行实质性功能推进”的要求，补充了一个新的 OPFS/runtime
+能力：生成可恢复的机器会话快照清单，范围仍局限在 `runtime/opfs` 与对应 smoke。
+
+完成内容：
+
+- 在 `wasm-port/runtime/opfs/snapshot-store.js` 新增
+  `createMachineSessionSnapshotPayload(machineId, options)`；
+- 该 helper 基于现有 `path-model` 生成机器级 session snapshot payload，默认包含
+  `ini`、`parameters`、`toolTable`，可选包含 `gcode`；
+- 支持自定义 `iniOpfsPath`、`parameterOpfsPath`、`toolTableOpfsPath`、`gcodeOpfsPath`；
+- 支持自定义 `iniFilename`、`parameterFilename`、`toolTableFilename`、`gcodeFilename`；
+- 在 Node OPFS smoke 与 browser INI panel smoke 中补了覆盖，验证默认路径、自定义
+  文件名和 G-code 路径均能按预期生成；
+- 未改变 session snapshot 的格式、版本、存储位置或既有 save/load 行为；
+- 未改变 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
+wasm-port/tests/opfs/node/verify_file_service.sh
+SKIP_INI_BUILD=1 SKIP_INTERP_BUILD=1 wasm-port/tests/browser/verify_ini_panel_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
+opfs_file_service_node_smoke=ok
+browser_ini_opfs_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
+browser_interp_smoke=ok
+host_wasm_opfs_browser_smokes=ok
+```
+
+下一步建议：
+
+继续把这个 helper 扩到更明确的实际入口，优先扫描 browser/Node 里已有的 session
+snapshot 调用是否能复用它，或者把 machine session 生成入口整理到更显式的 API；
+只做 OPFS/filesystem/browser boundary 相关功能推进，不碰 CNC 语义。
+
 一、2026-06-14 继续执行记录：browser explicit readback path groups guard
 
 本轮按 `text10.txt` 第一候选批次继续收敛 explicit session saved readback path groups，
diff --git a/wasm-port/runtime/opfs/snapshot-store.js b/wasm-port/runtime/opfs/snapshot-store.js
index 5d60d27..f1f7246 100644
--- a/wasm-port/runtime/opfs/snapshot-store.js
+++ b/wasm-port/runtime/opfs/snapshot-store.js
@@ -1,5 +1,12 @@
 import { loadTextFile, saveTextFile } from "./file-service.js";
-import { sessionSnapshotPath } from "./path-model.js";
+import {
+  gcodeProgramPath,
+  machineIniPath,
+  normalizeOpfsPath,
+  parameterFilePath,
+  sessionSnapshotPath,
+  toolTablePath,
+} from "./path-model.js";
 
 export const SESSION_SNAPSHOT_FORMAT = "linuxcnc-wasm-session-snapshot";
 export const SESSION_SNAPSHOT_VERSION = 1;
@@ -10,6 +17,38 @@ function assertPlainObject(value, label) {
   }
 }
 
+function optionalOpfsPath(value, label) {
+  if (value === undefined) {
+    return undefined;
+  }
+  if (typeof value !== "string") {
+    throw new Error(`${label} must be a string.`);
+  }
+  return normalizeOpfsPath(value);
+}
+
+export function createMachineSessionSnapshotPayload(machineId, options = {}) {
+  assertPlainObject(options, "machine session snapshot options");
+  const ini = optionalOpfsPath(options.iniOpfsPath, "INI OPFS path") ??
+    machineIniPath(machineId, options.iniFilename);
+  const parameters = optionalOpfsPath(options.parameterOpfsPath, "parameter OPFS path") ??
+    parameterFilePath(machineId, options.parameterFilename);
+  const toolTable = optionalOpfsPath(options.toolTableOpfsPath, "tool table OPFS path") ??
+    toolTablePath(machineId, options.toolTableFilename);
+  const gcode = optionalOpfsPath(options.gcodeOpfsPath, "G-code OPFS path") ??
+    (options.gcodeFilename === undefined ? undefined : gcodeProgramPath(options.gcodeFilename));
+
+  return {
+    machineId,
+    files: {
+      ini,
+      parameters,
+      toolTable,
+      ...(gcode === undefined ? {} : { gcode }),
+    },
+  };
+}
+
 export function createSessionSnapshot(sessionId, payload, options = {}) {
   sessionSnapshotPath(sessionId, options.filename);
   assertPlainObject(payload, "snapshot payload");
diff --git a/wasm-port/tests/browser/ini_panel_smoke.html b/wasm-port/tests/browser/ini_panel_smoke.html
index 17a314c..aa300e0 100644
--- a/wasm-port/tests/browser/ini_panel_smoke.html
+++ b/wasm-port/tests/browser/ini_panel_smoke.html
@@ -15,6 +15,7 @@
       sessionSnapshotPath,
     } from "../../runtime/opfs/path-model.js";
     import {
+      createMachineSessionSnapshotPayload,
       loadSessionSnapshot,
       saveSessionSnapshot,
     } from "../../runtime/opfs/snapshot-store.js";
@@ -124,7 +125,26 @@ TOOL_TABLE = browser-tool.tbl
       await saveTextFile(opfsPath, iniText);
       assertEqual(await loadTextFile(opfsPath), iniText, "opfs roundtrip");
 
-      const snapshotPayload = { files: { ini: opfsPath } };
+      const snapshotPayload = createMachineSessionSnapshotPayload("browser-smoke", {
+        gcodeFilename: "browser-smoke.ngc",
+      });
+      assertEqual(snapshotPayload.machineId, "browser-smoke", "snapshot machine");
+      assertEqual(snapshotPayload.files.ini, opfsPath, "snapshot payload INI");
+      assertEqual(
+        snapshotPayload.files.parameters,
+        "linuxcnc/machines/browser-smoke/linuxcnc.var",
+        "snapshot payload parameter file",
+      );
+      assertEqual(
+        snapshotPayload.files.toolTable,
+        "linuxcnc/machines/browser-smoke/tool.tbl",
+        "snapshot payload tool table",
+      );
+      assertEqual(
+        snapshotPayload.files.gcode,
+        "linuxcnc/gcode/browser-smoke.ngc",
+        "snapshot payload G-code",
+      );
       const savedSnapshot = await saveSessionSnapshot(
         "browser-session",
         snapshotPayload,
@@ -139,7 +159,28 @@ TOOL_TABLE = browser-tool.tbl
       assertEqual(loadedSnapshot.sessionId, "browser-session", "snapshot session");
       assertEqual(loadedSnapshot.createdAt, savedSnapshot.createdAt, "snapshot timestamp");
       assertEqual(loadedSnapshot.payload.files.ini, opfsPath, "snapshot payload");
+      assertEqual(loadedSnapshot.payload.files.gcode, snapshotPayload.files.gcode, "snapshot G-code payload");
       assertEqual(loadedSnapshot.metadata.source, "browser-smoke", "snapshot metadata");
+      const customMachineSnapshotPayload = createMachineSessionSnapshotPayload("browser-smoke", {
+        parameterFilename: "browser-linuxcnc.var",
+        toolTableFilename: "browser-tool.tbl",
+        gcodeOpfsPath: "linuxcnc/gcode/browser-custom.ngc",
+      });
+      assertEqual(
+        customMachineSnapshotPayload.files.parameters,
+        "linuxcnc/machines/browser-smoke/browser-linuxcnc.var",
+        "custom snapshot parameter file",
+      );
+      assertEqual(
+        customMachineSnapshotPayload.files.toolTable,
+        "linuxcnc/machines/browser-smoke/browser-tool.tbl",
+        "custom snapshot tool table",
+      );
+      assertEqual(
+        customMachineSnapshotPayload.files.gcode,
+        "linuxcnc/gcode/browser-custom.ngc",
+        "custom snapshot G-code",
+      );
       assertEqual(
         sessionSnapshotPath("browser-session", "browser-custom-snapshot.json"),
         "linuxcnc/sessions/browser-session/browser-custom-snapshot.json",
diff --git a/wasm-port/tests/opfs/node/verify_file_service.mjs b/wasm-port/tests/opfs/node/verify_file_service.mjs
index eeaa7b9..0db1784 100644
--- a/wasm-port/tests/opfs/node/verify_file_service.mjs
+++ b/wasm-port/tests/opfs/node/verify_file_service.mjs
@@ -16,6 +16,7 @@ import {
   toolTablePath,
 } from "../../../runtime/opfs/path-model.js";
 import {
+  createMachineSessionSnapshotPayload,
   createSessionSnapshot,
   loadSessionSnapshot,
   saveSessionSnapshot,
@@ -216,12 +217,38 @@ assertSessionSnapshotStoragePath(
 assertMachineFileStoragePaths("xyzab-tdr", defaultMachinePaths("xyzab-tdr"));
 assertMachineFileStoragePaths("xyzab-tdr", machineFilePaths("xyzab-tdr"));
 
-const snapshotPayload = {
+const snapshotPayload = createMachineSessionSnapshotPayload("xyzab-tdr", {
+  gcodeFilename: "fixture.ngc",
+});
+assert.deepEqual(snapshotPayload, {
+  machineId: "xyzab-tdr",
   files: {
     ini: machineIniPath("xyzab-tdr"),
+    parameters: parameterFilePath("xyzab-tdr"),
     toolTable: toolTablePath("xyzab-tdr"),
+    gcode: gcodeProgramPath("fixture.ngc"),
   },
-};
+});
+assert.deepEqual(
+  createMachineSessionSnapshotPayload("custom-machine", {
+    parameterFilename: "custom.var",
+    toolTableFilename: "custom-tool.tbl",
+    gcodeOpfsPath: "linuxcnc/gcode/custom-fixture.ngc",
+  }),
+  {
+    machineId: "custom-machine",
+    files: {
+      ini: "linuxcnc/machines/custom-machine/machine.ini",
+      parameters: "linuxcnc/machines/custom-machine/custom.var",
+      toolTable: "linuxcnc/machines/custom-machine/custom-tool.tbl",
+      gcode: "linuxcnc/gcode/custom-fixture.ngc",
+    },
+  },
+);
+assert.throws(
+  () => createMachineSessionSnapshotPayload("bad-machine", { gcodeFilename: "../escape.ngc" }),
+  /Invalid G-code filename/,
+);
 const snapshot = createSessionSnapshot("session-1", snapshotPayload, {
   createdAt: "2026-06-08T00:00:00.000Z",
   metadata: { source: "node-smoke" },