* feat(#768): pre-populate settings.json permissions.allow/deny for Claude Code
Adds mergeClaudePermissions() to bin/install.js which non-destructively
appends GSD's known-safe tool-call patterns to permissions.allow and
defense-in-depth credential-file patterns to permissions.deny during
Claude Code installs. Merge is idempotent (no duplicates on reinstall)
and additive (existing user entries preserved). Uninstall removes only
the exact GSD-owned entries.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* chore: update changeset pr number to 819
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Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
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