按规划继续工作

结论：补齐 OPFS 会话快照自定义文件名与非法快照文件名拒绝验证，覆盖 Node OPFS 与 Chromium OPFS 路径，并通过 host/WASM/browser 聚合验证。

wasm-port/docs/compatibility-validation.md

@@ -100,9 +100,9 @@ paths, unavailable OPFS storage, and the host-side OPFS path model for INI,
 tool table, parameter, G-code, preview-cache, and session-snapshot storage
 targets. It also validates the host-side session snapshot JSON envelope and
 round-trip store, including unsupported format/version, session-id mismatch,
-and non-object metadata/payload rejection, plus pure-text machine file and
-G-code stores without defining CNC machine-state or file-format semantics. It
-now also validates the
+non-object metadata/payload rejection, custom snapshot filenames, and invalid
+snapshot filename rejection, plus pure-text machine file and G-code stores
+without defining CNC machine-state or file-format semantics. It now also validates the
 OPFS-to-WASM parameter-file bridge with a mock interpreter SDK to ensure the
 host boundary copies text into and out of the WASM filesystem without defining
 parameter semantics, and that INI-derived machine file names are still
@@ -114,8 +114,8 @@ keeping host override policy outside CNC semantics.
 The browser INI/OPFS smoke script serves `wasm-port/` over localhost and runs
 Chromium headless against a test page that imports the JS SDK, loads the INI
 WASM module, queries vendored LinuxCNC INI parsing through the SDK, and
-performs an OPFS text-file, generic session snapshot, invalid snapshot
-envelope, machine file, and G-code text round trip.
+performs an OPFS text-file, generic session snapshot, custom snapshot filename,
+invalid snapshot filename/envelope, machine file, and G-code text round trip.
 
 The browser interpreter smoke script serves `wasm-port/` over localhost and
 runs Chromium headless against a test page that loads the interpreter-core
@@ -186,8 +186,8 @@ The validation fails if:
 | --- | --- |
 | `tests/wasm/node/verify_ini_wasm.sh` | Validates the browser-facing INI WASM module can be built from vendored LinuxCNC `inifile.cc`, loaded through the JS SDK in Node, and queried through the exported C ABI. |
 | `tests/wasm/node/verify_interp_wasm.sh` | Validates the initial interpreter-core WASM module can be built from vendored LinuxCNC interpreter source, loaded through the interpreter JS SDK, run the first fixture group through `Interp::execute()` and selected file fixtures through `Interp::open()`/`read()`/`execute()`, match the native canonical event plus required state readback fixtures, and run parameter-file restore/save through vendored LinuxCNC `Interp::restore_parameters()` and `Interp::save_parameters()`. |
-| `tests/opfs/node/verify_file_service.sh` | Validates the host-owned OPFS text-file adapter, path model, session snapshot store including envelope rejection paths, machine file store, G-code text store, OPFS-to-WASM parameter/tool-table bridges, and grouped machine-session loading without moving file persistence, parameter semantics, or tool-table semantics into the WASM core. |
-| `tests/browser/verify_ini_panel_browser.sh` | Validates the INI SDK, INI/interpreter WASM module loading, OPFS text-file round trip, generic session snapshot round trip plus envelope rejection paths, machine file text round trip, G-code text round trip, and the INI panel UI's machine-session load, G-code run, and canonical-event display paths in a real browser runtime. |
+| `tests/opfs/node/verify_file_service.sh` | Validates the host-owned OPFS text-file adapter, path model, session snapshot store including custom filenames and envelope/path rejection paths, machine file store, G-code text store, OPFS-to-WASM parameter/tool-table bridges, and grouped machine-session loading without moving file persistence, parameter semantics, or tool-table semantics into the WASM core. |
+| `tests/browser/verify_ini_panel_browser.sh` | Validates the INI SDK, INI/interpreter WASM module loading, OPFS text-file round trip, generic session snapshot round trip plus custom filename and envelope/path rejection paths, machine file text round trip, G-code text round trip, and the INI panel UI's machine-session load, G-code run, and canonical-event display paths in a real browser runtime. |
 | `tests/browser/verify_interp_browser.sh` | Validates the interpreter-core WASM module loads through the interpreter JS SDK in a real browser runtime and runs selected positive and negative canonical fixtures through vendored LinuxCNC `Interp::execute()` plus `Interp::open()`/`read()`/`execute()` via the exported C ABI, including OPFS-backed parameter-file restore/save and tool-table load/save through vendored LinuxCNC source. |
 | `tests/host/verify_host_smokes.sh` | Runs the current host-side Node, WASM interpreter-core, OPFS, and browser smoke validation with shared WASM builds. |
 
@@ -270,10 +270,11 @@ derived from vendored LinuxCNC INI boolean parsing, INI-derived
 `[RS274NGC]PARAMETER_FILE` and `[EMCIO]TOOL_TABLE` file names mapped to OPFS
 machine files, OPFS path-model rejection of invalid INI-derived file names,
 explicit host session file-name overrides taking precedence over INI-derived
-names, session snapshot envelope rejection for unsupported format/version and
-wrong session id, and a browser interpreter smoke that uses the same session
-bridge with real LinuxCNC INI WASM parsing before saving OPFS-backed parameter
-and tool-table text through vendored LinuxCNC file APIs.
+names, session snapshot custom filename handling plus envelope/path rejection
+for unsupported format/version, wrong session id, and invalid snapshot
+filenames, and a browser interpreter smoke that uses the same session bridge
+with real LinuxCNC INI WASM parsing before saving OPFS-backed parameter and
+tool-table text through vendored LinuxCNC file APIs.
 Full browser coverage, full SDK coverage, and richer machine-state validation
 remain future work.
 

wasm-port/docs/drift-report.md

@@ -71,8 +71,8 @@ semantic rewrites:
   file and G-code storage, parameter/tool-table bridge copying into the
   interpreter SDK filesystem, grouped machine-session loading, explicit
   session file-name overrides, invalid INI-derived machine file names, generic
-  session snapshot envelope rejection paths, and a Chromium localhost round
-  trip for those persistence paths.
+  session snapshot custom filenames plus envelope/path rejection paths, and a
+  Chromium localhost round trip for those persistence paths.
 - Host-side smoke validation is aggregated by
   `tests/host/verify_host_smokes.sh` so Node, WASM, OPFS, and browser checks
   run from one command.

wasm-port/docs/source-reuse-map.md

@@ -83,8 +83,9 @@ Current validation is intentionally mechanical:
   `runtime/opfs/file-service.js` adapter. `runtime/opfs/path-model.js` now
   defines paths for INI, tool table, parameter file, G-code program,
   preview-cache, and session-snapshot targets. `runtime/opfs/snapshot-store.js`
-  adds a generic JSON session snapshot envelope and validates its format,
-  version, session id, metadata, and payload shape.
+  adds a generic JSON session snapshot envelope, supports custom snapshot
+  filenames under the session directory, and validates its format, version,
+  session id, metadata, payload shape, and filename boundary.
   `runtime/opfs/machine-file-store.js` adds pure-text storage for INI, tool
   table, parameter file, and G-code program content.
   `runtime/opfs/linuxcnc-parameter-bridge.js` copies OPFS-backed parameter

wasm-port/tests/browser/ini_panel_smoke.html

@@ -116,6 +116,43 @@ JOINTS = 3
       assertEqual(loadedSnapshot.createdAt, savedSnapshot.createdAt, "snapshot timestamp");
       assertEqual(loadedSnapshot.payload.files.ini, opfsPath, "snapshot payload");
       assertEqual(loadedSnapshot.metadata.source, "browser-smoke", "snapshot metadata");
+      assertEqual(
+        sessionSnapshotPath("browser-session", "browser-custom-snapshot.json"),
+        "linuxcnc/sessions/browser-session/browser-custom-snapshot.json",
+        "snapshot custom path",
+      );
+      const customSnapshot = await saveSessionSnapshot(
+        "browser-session",
+        snapshotPayload,
+        {
+          filename: "browser-custom-snapshot.json",
+          createdAt: "2026-06-08T00:00:00.000Z",
+          metadata: { source: "browser-smoke-custom" },
+        },
+      );
+      const loadedCustomSnapshot = await loadSessionSnapshot(
+        "browser-session",
+        { filename: "browser-custom-snapshot.json" },
+      );
+      assertEqual(
+        loadedCustomSnapshot.metadata.source,
+        customSnapshot.metadata.source,
+        "custom snapshot metadata",
+      );
+      await assertRejects(
+        "browser snapshot invalid filename save",
+        () => saveSessionSnapshot("browser-session", {}, {
+          filename: "nested/snapshot.json",
+        }),
+        /Invalid session snapshot filename/,
+      );
+      await assertRejects(
+        "browser snapshot invalid filename load",
+        () => loadSessionSnapshot("browser-session", {
+          filename: "../snapshot.json",
+        }),
+        /Invalid session snapshot filename/,
+      );
       await saveTextFile(
         sessionSnapshotPath("browser-bad-format"),
         JSON.stringify({

wasm-port/tests/opfs/node/verify_file_service.mjs

@@ -104,6 +104,10 @@ assert.equal(parameterFilePath("xyzab-tdr"), "linuxcnc/machines/xyzab-tdr/linuxc
 assert.equal(gcodeProgramPath("fixture.ngc"), "linuxcnc/gcode/fixture.ngc");
 assert.equal(previewCachePath("fixture"), "linuxcnc/preview-cache/fixture/preview.json");
 assert.equal(sessionSnapshotPath("session-1"), "linuxcnc/sessions/session-1/snapshot.json");
+assert.equal(
+  sessionSnapshotPath("session-1", "custom-snapshot.json"),
+  "linuxcnc/sessions/session-1/custom-snapshot.json",
+);
 assert.deepEqual(defaultMachinePaths("xyzab-tdr"), {
   ini: "linuxcnc/machines/xyzab-tdr/machine.ini",
   toolTable: "linuxcnc/machines/xyzab-tdr/tool.tbl",
@@ -167,6 +171,23 @@ await saveSessionSnapshot("session-1", snapshotPayload, {
   metadata: { source: "node-smoke" },
 });
 assert.deepEqual(await loadSessionSnapshot("session-1", { storage }), snapshot);
+const customSnapshot = await saveSessionSnapshot("session-1", snapshotPayload, {
+  storage,
+  filename: "custom-snapshot.json",
+  createdAt: "2026-06-08T00:00:00.000Z",
+  metadata: { source: "node-smoke-custom" },
+});
+assert.equal(
+  customSnapshot.metadata.source,
+  "node-smoke-custom",
+);
+assert.deepEqual(
+  await loadSessionSnapshot("session-1", {
+    storage,
+    filename: "custom-snapshot.json",
+  }),
+  customSnapshot,
+);
 
 await saveMachineTextFiles("xyzab-tdr", {
   ini: "[EMC]\nMACHINE = xyzab-tdr\n",
@@ -569,6 +590,24 @@ assert.throws(
   () => machineIniPath("../escape"),
   /Invalid machine id/,
 );
+assert.throws(
+  () => sessionSnapshotPath("session-1", "nested/snapshot.json"),
+  /Invalid session snapshot filename/,
+);
+await assert.rejects(
+  () => saveSessionSnapshot("session-1", {}, {
+    storage,
+    filename: "nested/snapshot.json",
+  }),
+  /Invalid session snapshot filename/,
+);
+await assert.rejects(
+  () => loadSessionSnapshot("session-1", {
+    storage,
+    filename: "../snapshot.json",
+  }),
+  /Invalid session snapshot filename/,
+);
 await assert.rejects(
   () => saveMachineTextFiles("xyzab-tdr", null, { storage }),
   /machine files must be a plain object/,