Method contentHash

src/durable-objects/user-notes.ts:321–327

(content: string)

        const branch = this.getCurrentBranch(noteId);
        const parentId = branch.head_version_id;
        const hash = this.contentHash(content);

        const head = parentId ? this.sql.exec(
            "SELECT id, kind, storage, data, content_hash, created_at FROM note_versions WHERE id = ?", parentId
        ).toArray()[0] as any : null;

        // Identical to head → nothing to record
        if (head?.content_hash && head.content_hash === hash) return null;

        // Defense-in-depth: never record an accidental wipe as a version. A