Errors now show app frames highlighted with relative paths and library
frames collapsed, both in ANSI on the console and as a styled HTML page
in the browser. Process-level uncaughtException/unhandledRejection
handlers also use the formatter.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Adds check-deps.ts which ensures backend/package.json doesn't duplicate
any dependencies already provided by backend/diachron/package.json.
Integrated into backend/check.sh.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Update paths in .gitignore, cmd, develop, mgmt, sync.sh, check.sh,
fixup.sh, CLAUDE.md, docs/new-project.md, and backend/*.sh scripts.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>