docs: retire stale model-judge guidance

[aryeko]

Summary

• mark extraction-era technical-design Promptfoo follow-up docs as historical
• replace the stale release-process dependency example with a version placeholder
• add the missing v0.1.4 release-list entry and changelog note

Verification

• pnpm install --frozen-lockfile
• pnpm check
• git diff --check
• targeted stale-guidance rg sweep for old required technical-design model guidance