docs+scripts: reconcile payload inventory after both swaps

Staged 59 GiB of retired LLM payloads on Dankclaw to
~dank/.AGENTTRASH/20261002-retired-llm-payloads/ (vLLM MiMo BF16, Qwen3.5-9B
MTP source, both DFlash dirs, Gemma4-12B-QAT, SGLang MiMo INT8) and corrected
every doc claim about what is on disk: gufo's rollback pair (Q4_K_XL weights +
the Q8_K_XL DFlash2 drafter) and frank-small's Q6_K stay in place, so the
rollback paths in the tags' env files still resolve. The vLLM-era frank-large
fetch trio moves to old/ with its runtime; runbook links updated.

AGENTS.md

@@ -399,7 +399,8 @@ SGLang run used).
 Runbook: `serverAppConfigs-docs/LLM/frank-small-llama-mimo-q5km.md`.
 Rollback: [[frank-small-llama-mimo-q6k]] (Q6_K file on disk at
 `/home/dank/models/MiMo-Q6K/`); before that [[frank-small-sglang-mimo-v26]]
-(venv + INT8 payload still on the host).
+(venv on disk at `/home/dank/GitPackages/sglang-cu128/`; its INT8 payload was
+staged to `~dank/.AGENTTRASH/20261002-retired-llm-payloads/` on 2026-10-02).
 
 ### frank-primary — tcclaviger vLLM, Qwen3.8-Flash-Next FP8 + MTP4 (Dankserver, ACTIVE)