diff --git a/check-linuxcnc-opfs-source-map.sh b/check-linuxcnc-opfs-source-map.sh
index 2c58418..46d0ba5 100755
--- a/check-linuxcnc-opfs-source-map.sh
+++ b/check-linuxcnc-opfs-source-map.sh
@@ -34,6 +34,13 @@ grep -F '`Interp::save_parameters()` for `filename + ".new"`' \
 grep -F 'must not add independent filesystem behavior or expand the temporary smoke parser' \
     docs/linuxcnc-opfs-source-map.md >/dev/null
 grep -F 'parseFileWithParameterFile()' docs/linuxcnc-opfs-source-map.md >/dev/null
+grep -F 'OPFS Coverage' docs/linuxcnc-opfs-source-map.md >/dev/null
+grep -F '| `web/src/wasm-core.js` |' docs/linuxcnc-opfs-source-map.md >/dev/null
+grep -F '| `web/src/app.js` |' docs/linuxcnc-opfs-source-map.md >/dev/null
+grep -F '| `web/test-browser-wasm-smoke-opfs-basic-sections.js` |' docs/linuxcnc-opfs-source-map.md >/dev/null
+grep -F '| `web/test-browser-wasm-smoke-opfs-parameter-sections.js` |' docs/linuxcnc-opfs-source-map.md >/dev/null
+grep -F '| `web/test-browser-wasm-smoke-opfs-mirror-sections.js` |' docs/linuxcnc-opfs-source-map.md >/dev/null
+grep -F '| `web/test-browser-wasm-smoke-app-sections.js` |' docs/linuxcnc-opfs-source-map.md >/dev/null
 
 grep -F 'const LINUXCNC_DEFAULT_PARAMETER_FILE = "rs274ngc.var";' web/src/wasm-core.js >/dev/null
 grep -F '`${LINUXCNC_DEFAULT_PARAMETER_FILE}.new`' web/src/wasm-core.js >/dev/null
@@ -47,8 +54,39 @@ grep -F 'OPFS workspace is required for browser program parsing' web/src/app.js
 grep -F 'runSection("opfs parameter restore in new instance"' test-web-wasm-browser-smoke.sh >/dev/null
 grep -F 'runSection("opfs invalid parameter restore failures"' test-web-wasm-browser-smoke.sh >/dev/null
 grep -F 'runSection("opfs stale parameter state cleanup"' test-web-wasm-browser-smoke.sh >/dev/null
+grep -F 'runSection("opfs program parse and restore"' test-web-wasm-browser-smoke.sh >/dev/null
+grep -F 'runSection("browser app opfs restore"' test-web-wasm-browser-smoke.sh >/dev/null
 
 if grep -R -n -E 'localStorage|sessionStorage|indexedDB|showOpenFilePicker|showSaveFilePicker|showDirectoryPicker|webkitRequestFileSystem|FileReader' web/src; then
     echo "browser app/wasm code must not add filesystem persistence outside OPFS" >&2
     exit 1
 fi
+
+python3 - <<'PY'
+from pathlib import Path
+
+source_map = Path("docs/linuxcnc-opfs-source-map.md").read_text(encoding="utf-8")
+coverage_entries = [
+    "web/src/wasm-core.js",
+    "web/src/app.js",
+    "web/test-browser-wasm-smoke-opfs-basic-sections.js",
+    "web/test-browser-wasm-smoke-opfs-parameter-sections.js",
+    "web/test-browser-wasm-smoke-opfs-mirror-sections.js",
+    "web/test-browser-wasm-smoke-app-sections.js",
+]
+for entry in coverage_entries:
+    if f"| `{entry}` |" not in source_map:
+        raise SystemExit(f"docs/linuxcnc-opfs-source-map.md missing OPFS coverage entry: {entry}")
+
+required_phrases = [
+    "programs/current.ngc",
+    "parameters/rs274ngc.var",
+    "LinuxCNC `read_text()`",
+    "`.new`, `.bak`, failure, and stale-state semantics",
+    "OPFS/WASM mirror persistence",
+    "app-level OPFS program, parameter, backup, and reload behavior",
+]
+for phrase in required_phrases:
+    if phrase not in source_map:
+        raise SystemExit(f"docs/linuxcnc-opfs-source-map.md missing OPFS coverage phrase: {phrase}")
+PY
diff --git a/docs/linuxcnc-opfs-source-map.md b/docs/linuxcnc-opfs-source-map.md
index a5c3ebb..248285b 100644
--- a/docs/linuxcnc-opfs-source-map.md
+++ b/docs/linuxcnc-opfs-source-map.md
@@ -15,6 +15,17 @@ persistence. It is a policy and bridge map only; it must not add independent fil
   `Interp::save_parameters()` for `filename + ".new"`, backup, and replacement
   writes.
 
+## OPFS Coverage
+
+| Entry | Boundary |
+| --- | --- |
+| `web/src/wasm-core.js` | Keeps LinuxCNC parameter restore/save bridge files under the OPFS workspace and cleans WASM scratch files. |
+| `web/src/app.js` | Persists browser programs at `programs/current.ngc` and LinuxCNC parameters at `parameters/rs274ngc.var`. |
+| `web/test-browser-wasm-smoke-opfs-basic-sections.js` | Verifies OPFS program file reads through LinuxCNC `read_text()` and rejects unsafe paths. |
+| `web/test-browser-wasm-smoke-opfs-parameter-sections.js` | Verifies OPFS parameter restore, save, `.new`, `.bak`, failure, and stale-state semantics. |
+| `web/test-browser-wasm-smoke-opfs-mirror-sections.js` | Verifies OPFS/WASM mirror persistence used by source-backed file parsing and parameter movement. |
+| `web/test-browser-wasm-smoke-app-sections.js` | Verifies app-level OPFS program, parameter, backup, and reload behavior. |
+
 ## Browser Bridge Boundary
 
 - `web/src/wasm-core.js` must keep LinuxCNC parameter persistence routed