This commit implements a structured error response system for the Ollama API, replacing
ad-hoc error handling and string parsing with proper error types and codes through a new
ErrorResponse struct. Instead of relying on regex to parse error messages for SSH keys,
the API now passes this data in a structured format with standardized fields for error
messages, codes, and additional data. This structured approach makes the API more
maintainable and reliable while improving the developer experience by enabling
programmatic error handling, consistent error formats, and better error
documentation.
When an ollama key is not registered with any account on ollama.com this is
not obvious. In the current CLI an error message that the user is not
authorized is displayed. This change brings back previous behavior to show
the user their key and where they should add it. It protects against adding
unexpected keys by checking that the key is available locally.
A follow-up change should add structured errors from the API. This change
just relies on a known error message.
After a user pushes their model it is not clear what to do next. Add a link
to the output of `ollama push` that tells the user where their model can now
be found.
