Initial import of verae-archive-worm from zapier monorepo

src/archive.js

@@ -0,0 +1,40 @@
+/**
+ * In-process WORM archive: append-only records + bloom.
+ * @module archive
+ */
+
+import { Bloom } from './bloom.js';
+
+export class WormArchive {
+  /**
+   * @param {string} archiveId
+   */
+  constructor(archiveId) {
+    this.archiveId = archiveId;
+    this.bloom = new Bloom();
+    /** @type {Map<string, object[]>} */
+    this.byHash = new Map();
+  }
+
+  /**
+   * @param {{ sha256: string, kind: string, record: object }} put
+   */
+  put(put) {
+    const key = String(put.sha256).toLowerCase();
+    const list = this.byHash.get(key) ?? [];
+    list.push({ kind: put.kind, record: put.record, archiveId: this.archiveId, storedAt: new Date().toISOString() });
+    this.byHash.set(key, list);
+    this.bloom.add(key);
+  }
+
+  /**
+   * Bloom miss → null (caller must stay silent). Hit → records (may be empty if false positive).
+   * @param {string} sha256
+   * @returns {object[]|null}
+   */
+  query(sha256) {
+    const key = String(sha256).toLowerCase();
+    if (!this.bloom.mightHave(key)) return null;
+    return this.byHash.get(key) ?? [];
+  }
+}