057 — REVIEWED: structural screen after the xz series ends Review date: 2026-09-05. Local-only final snapshot review. Question Could the same short, space-damaged Base64 posting pattern simply continue under another label after the final xz_knowledge_p1 post? Observed result The 575 validated pages after ID4552377, through ID4552953, contain four broad Base64-alphabet candidates. Two fail strict canonical standard-Base64 checks. The other two, displayed July31 12:51 and13:02, have 2,864 and2,900 authored characters; they retain 42 and45 literal plus signs respectively and no spaces. They decode to 2,148 and2,172 non-UTF8 bytes. They differ from the reviewed xz series in length and plus handling. No continuation of that exact short, space-damaged shape was found in these later validated pages. This is a narrow structural result. It does not establish that the later payloads are unrelated, that the operator stopped, or that another format, label or destination was not used. Two opaque posts are not an independent agent lead. Payloads and unrelated author labels are not published. Method Input: 039-private/checkpoint-0036-20260905T143712065390Z.json. Select IDs greater than4552377, use the monitor's broad alphabet screen, then independently verify candidate raw-source and authored-text hashes before static Base64 operations. Try both whitespace removal and spaces-to-plus variants with canonical re-encoding. No payload execution, decryption, key searches or network requests. One deliberately excluded page remains uninspected, so the result is explicitly limited to575 validated pages. Reproduce: swarmhunt/.venv/bin/python investigation/china/057-post-series-screen.py Private structured result: investigation/china/057-private/screen.json.