Fix: remove leading slash in finalizeRound endpoint to respect Axios baseURL

[ayushshukla1807]

Fixes #464.
Resolves a widespread network failure where Axios requests aimed at finalization endpoints silently dropped because a leading slash in adminService.js manually overrode the global Axios baseURL interceptor, rerouting the request to the domain root instead of /v1/admin/....

Root Cause Analysis

The adminService.js endpoint strings were constructed with a leading / (e.g. /admin/campaign/finalize). When Axios evaluates a URL that begins with /, it treats it as an absolute path and overrides the configured baseURL entirely. This means:

• ✅ Configured baseURL: /v1
• ❌ Actual resolved URL: /admin/campaign/finalize (strips /v1 prefix)
• 💥 Result: 404 Not Found on all finalization calls

Technical Solution

Removed the leading / from all affected endpoint strings in adminService.js. The Axios interceptor now correctly resolves paths relative to the /v1 base prefix.

- axios.post('/admin/campaign/finalize', payload)
+ axios.post('admin/campaign/finalize', payload)

Architectural Diagram

sequenceDiagram
    participant Vue as Vue Component
    participant Axios as Axios (baseURL: /v1)
    participant Backend as Flask (/v1/admin/...)

    Note over Vue,Backend: BEFORE fix (leading slash)
    Vue->>Axios: POST /admin/campaign/finalize
    Note over Axios: Leading / overrides baseURL
    Axios->>Backend: POST /admin/campaign/finalize
    Backend-->>Axios: 404 Not Found

    Note over Vue,Backend: AFTER fix (no leading slash)
    Vue->>Axios: POST admin/campaign/finalize
    Note over Axios: Relative path appended to baseURL
    Axios->>Backend: POST /v1/admin/campaign/finalize
    Backend-->>Axios: 200 OK

Loading

Impact

This bug affected every coordinator attempting to finalize a round. The fix is a one-character change per endpoint with zero API surface impact and no breaking changes.

[userAdityaa]

Hi @ayushshukla1807, thanks for opening the PR. Could you please add a short description explaining the change and what behavior we should expect after it? This will make it much clearer for future contributors.

[ayushshukla1807]

Thanks for the suggestion, @userAdityaa. To clarify context for future contributors: this patch addresses a regression where the redundant leading slash bypassed the global Axios baseURL interceptor (/v1). By removing it, the finalizeRound payload correctly inherits the v1 prefix routing automatically.

[userAdityaa]

Hey, I meant updating the PR description itself rather than adding the explanation only in the comments.

[ayushshukla1807]

Done! The description has been updated with the technical context.