Fix/backend sentry typescript errors

[anonfedora]

Pull Request Title: fix(backend): resolve TypeScript errors in Sentry integration and server file

Description

This PR fixes all TypeScript errors in the backend package that were preventing pnpm build from passing. The changes address two main areas:

1. Sentry API Updates: Updated the errorTracking.ts file to work with Sentry v8's revised API, which removes Integrations and Handlers properties from the default export in favor of direct imports.
2. Type Inference Fix: Added an explicit type annotation for the Express app variable in server.ts to resolve an unnameable type error.

Changes Made

• backend/src/middleware/errorTracking.ts:

  • Replaced Sentry.Integrations.Http and Sentry.Integrations.Express with direct imports of httpIntegration and expressIntegration
  • Updated sentryErrorHandler to use expressErrorHandler from Sentry
  • Simplified sentryRequestHandler and sentryTracingHandler as pass-through functions for backward compatibility
  • Added type annotation to sentryErrorHandler return value

• backend/src/server.ts:

  • Added explicit type express.Application to app declaration

Verification

• ✅ pnpm build now passes in the backend package
• ✅ ESLint passes (no new errors, only pre-existing warnings)
• ✅ The Sentry integration maintains backward compatibility

Closes #183

Testing

The changes were validated by running pnpm build in the backend directory, which now completes successfully.

---

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Summary by CodeRabbit

• Refactor
  • Updated error tracking integration with improved integration patterns
  • Enhanced code type safety for better maintainability

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 2840316e-abcc-411a-9abc-7ee27eadb025

📥 Commits

Reviewing files that changed from the base of the PR and between 751087e and 9643779.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (4)

• .github/workflows/backend.yml
• backend/src/index.ts
• backend/src/server.ts
• package.json

📝 Walkthrough

Walkthrough

initSentry is updated to use httpIntegration() and expressIntegration() helpers from @sentry/node instead of Sentry.Integrations.* constructors. sentryRequestHandler and sentryTracingHandler are replaced with no-op pass-through middleware, and sentryErrorHandler now returns expressErrorHandler(). server.ts gains an Application type annotation; package.json devDependencies are reordered only.

Changes

Sentry Middleware Modernization

Layer / File(s)	Summary
Sentry init, request/tracing shims, and error handler backend/src/middleware/errorTracking.ts	initSentry replaces Sentry.Integrations.Http/Sentry.Integrations.Express constructors with httpIntegration() and expressIntegration() helpers. sentryRequestHandler and sentryTracingHandler now return no-op middleware calling next() instead of Sentry's built-in handlers. sentryErrorHandler returns expressErrorHandler() instead of Sentry.Handlers.errorHandler().
Express Application type annotation and devDependencies reorder backend/src/server.ts, package.json	server.ts imports the Application type from express and annotates app with it. package.json devDependencies entries are reordered with no version or name changes.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐇 Hoppity-hop, the old handlers must go,
No more .Integrations from ages ago!
A no-op for tracing, a helper for errors,
The Sentry SDK gets rid of its terrors.
With expressErrorHandler fresh in its place,
This bunny keeps middleware tidy and ace! 🌟

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The PR fixes TypeScript compilation errors to enable the build process, but does not implement any GraphQL features required by issue #183.	This PR should either implement GraphQL API features from issue #183, or be treated as a prerequisite fix separate from that issue's requirements.
Docstring Coverage	⚠️ Warning	Docstring coverage is 20.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: fixing TypeScript errors in the backend Sentry integration, which aligns with the PR objectives.
Out of Scope Changes check	✅ Passed	All changes (Sentry API updates, type annotation, dependency ordering) are focused on fixing TypeScript errors and maintaining compatibility, which is within scope.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@backend/src/middleware/errorTracking.ts`:
- Around line 19-25: The Sentry initialization must occur before the Express
application is created for proper instrumentation, but currently it is being
initialized after app creation which breaks automatic instrumentation in Sentry
v8. Additionally, the production entry point has no Sentry initialization at
all, leaving it completely unmonitored. Create a dedicated initialization file
(or consolidate into errorTracking.ts) that contains the Sentry initialization
logic, then import this file at the very top of both entry points before any
Express app creation or other imports that depend on Express. This ensures
Sentry is properly initialized in both the development and production servers
with automatic instrumentation hooked into Express before the app is created.

In `@package.json`:
- Around line 59-60: The jest and jest-environment-jsdom packages are on
different major versions (29 vs 30), which creates compatibility issues. Update
the jest-environment-jsdom version constraint in package.json from ^30.4.1 to
^29.7.0 to align with the jest package's major version of 29. This ensures both
packages are from the same release line and share compatible underlying
dependencies like JSDOM.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 92917abf-cd10-47a3-944d-06ea73949c08

📥 Commits

Reviewing files that changed from the base of the PR and between eed2c17 and 751087e.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (3)

• backend/src/middleware/errorTracking.ts
• backend/src/server.ts
• package.json