[bug] Sourcebot not indexing branches for bitbucket

[tarangchikhalia]

Describe the bug

I added the Bitbucket datacenter connection to the sourcebot with 1 public repos and its 5 branches. The index is complete but the web UI only shows the HEAD of the repo.

To reproduce

Use this connection in the config file for bitbucket data center.

{
    "connections": {
        "bitbucket-server": {
            "type": "bitbucket",
            "deploymentType": "server",
            "url": "https://bitbucket.******.com",
            "repos": [
                "repoA"
            ],
            "revisions": {
                "branches": [
                    "main"
                    "branchA",
                    "branchB",
                    "branchC",
                    "branchD"
                ]
            }
        }
    }
}

Sourcebot deployment information

Sourcebot version (e.g. v4.7.3):

Additional information

No response

[aft]

The problem was that Bitbucket requires different credentials for two operations:

The Issue:

1. Bitbucket API (discovering repos): Needs full email name@domain.ext
2. Git clone: Needs just username "name"

Sourcebot was using the same config.user field for both, causing git clone to fail.

The Solution:

Modified /app/packages/backend/src/utils.ts line 191:

// OLD CODE (failed):
const username = config.user ?? 'x-token-auth';

// NEW CODE (works):
// Bitbucket API auth uses the full email, but git clone needs just the username  
const username = config.user ? config.user.split('@')[0] : 'x-token-auth';

This automatically extracts name from name@domain.ext when creating git clone URLs.

[brendan-kellam]

@aft do you mind opening a PR up with this fix?