This PR fulfills the requirements of #9069 by:
- Adding a golangci-lint directive (forbidigo) to disallow all fmt.Errorf usages.
- Replacing existing fmt.Errorf instances with structured errors from github.com/SigNoz/signoz/pkg/errors for consistent error classification and lint compliance.
- Verified lint and build integrity.
## 📄 Summary
- Instead of relying on JWT for session management, we are adding another token system: opaque. This gives the benefits of expiration and revocation.
- We are now ensuring that emails are regex checked throughout the backend.
- Support has been added for OIDC protocol
* fix: support multitenancy in dashboards
* fix: support multitenancy in saved views
* fix: move migrations to provider file
* fix: remove getUserFromClaims and use new errors
* fix: remove getUserFromClaims and use new errors
* fix: use new errors in dashboards.go
* Update ee/query-service/app/api/dashboard.go
Co-authored-by: ellipsis-dev[bot] <65095814+ellipsis-dev[bot]@users.noreply.github.com>
* fix: minor changes
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Co-authored-by: ellipsis-dev[bot] <65095814+ellipsis-dev[bot]@users.noreply.github.com>