72b4b0943c
Replace task/batch shorthand IDs and residual layer labels in human-facing docs with semantic phrases. Add the new cleanup policy to docs/编号规范.md and update the entry docs. Machine keys (TC/CODE-RULE/MENU-STATE/TRAP/FR), hardware designators/pins/MAC, protocol/version numbers and frozen historical evidence are intentionally kept. Docs only; no code behavior change. Verified with check_doc_links.py --all and git diff --check.