Report server and business failures to Sentry

[arjunkomath]

Summary

• add shared server exception and grouped business-failure reporting helpers
• capture exhausted Inngest functions and actionable caught control-plane errors
• report first-time terminal build, rollout, backup, restore, migration, deletion, cron, work-item, and agent-upgrade failures
• exclude expected validation, authentication, cancellation, stale, and replay outcomes
• add focused grouping, idempotency, and sensitive-metadata tests

Testing

• cd web && pnpm test (69 files, 509 tests)
• cd web && ./node_modules/.bin/tsc --noEmit
• cd web && pnpm lint (0 errors; 7 pre-existing React compiler warnings)
• cd web && pnpm exec oxfmt --write <changed-files>
• git diff --check

[github-actions]

React Doctor found no new issues. 🎉

_{Reviewed by React Doctor for commit cb74294.}