task-observer: docs/ai/writing-docs updates from 2026-05-11

[divad12]

Target

global-doc: docs/ai/writing-docs.md

Observations addressed

• Observation 1 (dotfiles/log.md): Compression can weaken corrective guardrails → changed: added "When Tightening or Compressing" section with rule to preserve imperative wording and failure-mode rationale
• Observation 2 (dotfiles/log.md): Explain why guardrails exist when model behavior depends on it → changed: added guidance to preserve rationale for judgment-heavy rules
• Observation 3 (dotfiles/log.md): Code guardrails need failure-mode rationale → changed: added rule to keep failure-mode context alongside hard rules
• Observation 4 (dotfiles/log.md): Positive phrasing is better for tradeoff guidance → changed: added preference for positive instructions over prohibitions in the compression checklist

---

Generated by Claude Code