feat(io): add user-approved recovery

web/ocs-parse-worker.js

@@ -1,14 +1,23 @@
-import init, { parse_document } from "./worker_pkg/ocs_web_worker.js";
+import init, { parse_document, sha256_document } from "./worker_pkg/ocs_web_worker.js?v=3";
 
-const ready = init();
+const ready = init(
+  new URL("./worker_pkg/ocs_web_worker_bg.wasm?v=3", import.meta.url),
+);
 
 self.onmessage = async ({ data }) => {
   let stage = "initialize worker";
   try {
     await ready;
+    if (data.action === "hash") {
+      const digest = sha256_document(new Uint8Array(data.bytes));
+      self.postMessage({ ok: true, digest });
+      return;
+    }
     const encoded = parse_document(
       data.name,
       new Uint8Array(data.bytes),
+      data.recoveryMode === true,
+      data.initialError || "",
       (next) => {
         stage = next;
       },
@@ -21,9 +30,7 @@ self.onmessage = async ({ data }) => {
   } catch (error) {
     self.postMessage({
       ok: false,
-      error: `${stage}: ${
-        error instanceof Error ? error.stack || error.message : String(error)
-      }`,
+      error: `${stage}: ${error instanceof Error ? error.message : String(error)}`,
     });
   }
 };