feat: add service overrides state to build response

[vigneshrajsb]

Summary

• Adds computed service override edit state to GET /api/v2/builds/{uuid} by annotating each returned deploys[] item with serviceOverride.
• Removes the separate GET /api/v2/builds/{uuid}/services operation because the UI can now build the edit form from the existing build detail response.
• Keeps PATCH /api/v2/builds/{uuid}/services as the targeted mutation endpoint and aligns the request field name to name.
• Keeps service override display/group/editability logic server-side so the UI does not need to duplicate PR-comment behavior.

API Shape

GET build request

GET /api/v2/builds/demo-build-123456

GET build response excerpt

{
  "data": {
    "uuid": "demo-build-123456",
    "deploys": [
      {
        "uuid": "api-demo-build-123456",
        "status": "deployed",
        "statusMessage": null,
        "active": true,
        "branchName": "feature/api",
        "publicUrl": "https://api-demo.example.test",
        "updatedAt": "2026-05-08T12:00:00.000Z",
        "deployable": {
          "name": "api",
          "type": "github"
        },
        "serviceOverride": {
          "name": "api",
          "branchOrExternalUrl": "feature/api",
          "group": "default",
          "editable": true
        }
      },
      {
        "uuid": "api-cache-demo-build-123456",
        "status": "pending",
        "statusMessage": null,
        "active": true,
        "deployable": {
          "name": "api-cache",
          "type": "github"
        },
        "serviceOverride": null
      }
    ]
  }
}

PATCH services request

PATCH /api/v2/builds/demo-build-123456/services
Content-Type: application/json

{
  "serviceOverrides": [
    {
      "name": "api",
      "active": false,
      "branchOrExternalUrl": "feature/api"
    }
  ]
}

PATCH services response

{
  "data": {
    "serviceOverrides": [
      {
        "name": "api",
        "active": false,
        "branchOrExternalUrl": "feature/api",
        "status": "pending",
        "statusMessage": null,
        "updatedAt": "2026-05-08T12:05:00.000Z",
        "group": "default",
        "editable": true
      }
    ],
    "queued": true
  }
}

Implementation Notes

• deploy.serviceOverride is nullable. null means the deploy is still part of the build response, but should not render as an editable service override row.
• The nested object intentionally contains only edit-form metadata: name, branchOrExternalUrl, group, and editable.
• Raw deploy state remains on the deploy row: active, status, statusMessage, updatedAt, branchName, and publicUrl.
• PATCH still accepts whole-form submissions. Display-only rows may submit unchanged branchOrExternalUrl, but changed display-only values return 400.

Validation

• pnpm test -- src/server/services/__tests__/build.test.ts src/server/services/__tests__/override.test.ts src/shared/openApiSpec.test.ts
• pnpm run lint
• git diff --check

pnpm run ts-check still fails on existing repo-wide TypeScript issues outside this change.