feat(auth): implement api order matching, capacity routing and tourist auth

[masch]

Linked Issue

Closes #226

Summary

• Implements order-matching logic against available capacity slots
• Adds capacity-based routing to direct requests through the correct handler
• Hardens tourist /create auth endpoint with integration + unit test coverage

Changes

File	Change
apps/backend/src/routes/auth.ts	Tourist create endpoint improvements
apps/backend/src/services/auth.service.ts	Tourist creation service logic
apps/backend/src/routes/auth.test.ts	Integration tests for tourist registration
apps/mobile/src/services/__tests__/auth.service.test.ts	Unit tests for mobile auth service (globalThis fix)
apps/backend/src/db/schema/users.ts	Schema reviewed for tourist user type

Test Summary

✅ PASS: All tests passing, make check successful (typecheck + lint + GGA verification)

Contributor Checklist

• Linked an approved issue
• Added exactly one type:* label
• Ran make check and tests pass
• Conventional commit format
• No Co-Authored-By trailers

[github-actions]

React Doctor

Score: 87 / 100

react-doctor v0.2.6

✔ Select projects to scan › impenetrable-mobile
Scanning changes: issue-219/api-order-matching-capacity-routing → main

Scanning /home/runner/work/impenetrable-connect/impenetrable-connect/apps/mobile...


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[masch]

🥦