[BE-15] Create LocationsModule with CRUD endpoints in opsce module

[yusuftomilola]

Problem

Physical locations cannot be managed via the API. Assets cannot be tracked by building, floor, or room without this module.

Proposed Solution

Create backend/src/opsce/locations/locations.controller.ts and backend/src/opsce/locations/locations.service.ts.

Acceptance Criteria

• POST /api/locations creates a location with optional parentId (ADMIN only)
• GET /api/locations returns all locations as a flat list with a type filter query param
• GET /api/locations/:id returns location with its children and asset count
• PATCH /api/locations/:id updates location fields (ADMIN only)
• DELETE /api/locations/:id returns 409 if any active assets are assigned to it
• CreateLocationDto validates name, type (enum), and optional address

[Jacques-codes]

@Jacques-codes has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hiii, Good Morning Ser, I love your product, and I would love to solve this issue and solve it accurately.

Thank you for granting my request.

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[Johnpii1]

@Johnpii1 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hello Sir,

I recently came across your project and I’m very interested in contributing to the team.

I have experience working with React to build responsive and user-friendly interfaces, and I also have a solid understanding of smart contracts and blockchain fundamentals. I enjoy writing clean, scalable code and focusing on improving overall user experience.

I’m a fast learner, highly motivated, and available to get started immediately. I would appreciate the opportunity to contribute and would be glad to discuss the next steps.

Thank you for your time and consideration. I look forward to hearing from you.

Best regards,
Johnpaul

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[KuchiMercy]

@KuchiMercy has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi maintainer, I'd like to work on this issue. Can you assign?

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[drips-wave]

Congratulations, @KuchiMercy! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

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