add missing cache headers, warn on the unverified judge entries

The two README caches had no Source line, so nothing could re-verify them;
both now check at 99% coverage. The judge-bias file gets a warning at the top:
11 entries still carry summarizer numbers, and 2 of the 5 checked so far were
wrong.

docs/evidence/llm_judge_biases.md

@@ -5,6 +5,15 @@ Fetch-status: verbatim (abstracts in full or near-full; verdict pages are short
 
 # LLM judge biases (excerpts)
 
+WARNING, read before quoting anything from this file. It was assembled by
+agents across several sessions and the provenance is uneven. Entries tagged
+[FT] were copied from raw source. Entries tagged [ID] have numbers a
+summarizer produced from a web page, and nobody has read the paper. On
+2026-08-15 I re-pulled the five [ID] entries the litreview depends on and two
+of the five carried a wrong number, so treat the remaining 11 as roughly 2-in-5
+wrong until each is checked against raw text. Do not promote an [ID] number
+into SKILL.md or refs/ without re-pulling the paper first.
+
 ## "Judging LLM-as-a-Judge with MT-Bench and Chatbot Arena" — Zheng et al. (LMSYS), NeurIPS 2023 — https://arxiv.org/pdf/2306.05685
 
 The canonical paper naming the bias taxonomy:

docs/evidence/reports/code/nous_atropos_readme.md

@@ -1,3 +1,7 @@
+Source: https://github.com/NousResearch/atropos/blob/main/README.md
+Title: Atropos, Nous Research's LLM RL Gym (repository README)
+Fetch-status: verbatim README
+
 # Atropos - Nous Research's LLM RL Gym
 
 ![newatr-02](banner-image.jpg)

docs/evidence/reports/code/olmo_core_readme.md

@@ -1,3 +1,7 @@
+Source: https://github.com/allenai/OLMo-core/blob/main/README.md
+Title: OLMo-core, building blocks for OLMo modeling and training (repository README)
+Fetch-status: verbatim README
+
 <div align="center">
   <!-- <img src="https://github.com/allenai/OLMo/assets/8812459/774ac485-a535-4768-8f7c-db7be20f5cc3" width="300"/> -->
   <img src="https://huggingface.co/datasets/allenai/blog-images/resolve/main/olmo2/olmo.png" alt="OLMo Logo" width="280" style="margin-left:'auto' margin-right:'auto' display:'block'"/>