* fix(hooks): skip read-guard advisory on Claude Code runtime (#1984)
Claude Code natively enforces read-before-edit at the runtime level,
so the gsd-read-guard.js advisory is redundant — it wastes ~80 tokens
per Write/Edit call and clutters tool flow with system-reminder noise.
Add early exit when CLAUDE_SESSION_ID is set (standard Claude Code
session env var). Non-Claude runtimes (OpenCode, Gemini, etc.) that
lack native read-before-edit enforcement continue to receive the
advisory as before.
Closes#1984
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(hooks): sanitize runHook env to prevent test failures in Claude Code
The runHook() test helper now blanks CLAUDE_SESSION_ID so positive-path
tests pass even when the test suite runs inside a Claude Code session.
The new skip test passes the env var explicitly via envOverrides.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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