get_crate_documentation returns "Documentation content not found" for all tested crates

[johnkferguson]

The get_crate_documentation function consistently fails to retrieve documentation for any crate, including popular and well-documented ones.

Steps to Reproduce

1. Popular crate (serde):

{
  "crateName": "serde",
  "version": "1.0.219"
}

2. Framework crate (dioxus):

{
  "crateName": "dioxus"
}

Expected Behavior

Should return crate-level documentation content.

Actual Behavior

Always returns: "Documentation content not found"

Additional Context

• These crates definitely have documentation available on docs.rs
• Other functions (get_type_info, search_symbols) work fine for the same crates
• Issue affects both versioned and unversioned requests