[BUG] HTTP proxy is ignored on Anthropic provider #439

Problem (one or two sentences)

Currently VSCode HTTP proxy configuration is being ignored when using Anthropic.

Context (who is affected and when)

Any user for who internet access is available only through a proxy.

Reproduction steps

In my particular case I'm doing remote development on a container from which internet access is only available through a HTTP proxy. HTTP proxy is setup as http://proxy:1080 where proxy is the sidecar container providing proxy functionality. All attempts to use Anthropic provider fail.

Expected result

Anthropic provider does not fail

Actual result

I get Provider Error with "Connection error." as error details

Variations tried (optional)

No response

App Version

Roo code 3.50.4

API Provider (optional)

Anthropic

Model Used (optional)

No response

Relevant logs or errors (optional)