Add 'never use heredoc' instruction to 6 agents that were missing it:
gsd-codebase-mapper, gsd-debugger, gsd-phase-researcher,
gsd-project-researcher, gsd-research-synthesizer, gsd-roadmapper.
All 9 file-writing agents now consistently prevent settings.local.json
corruption from heredoc permission entries (GSD #526).
Read-only agents (plan-checker, integration-checker) excluded as they
cannot write files.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
1a1acd5283