Add generic HTTP proxy auth options

[chubes4]

Summary

• Adds per-request proxy_url support to DataMachine\Core\HttpClient using a scoped http_api_curl hook.
• Adds generic Basic/Bearer auth options while preserving caller-provided Authorization headers.
• Redacts sensitive request headers in HTTP connection failure logs and covers the behavior with a smoke test.

Testing

• php tests/http-client-proxy-auth-smoke.php
• homeboy lint --path /Users/chubes/Developer/data-machine@generic-http-proxy-auth --extension wordpress --changed-since origin/main
• homeboy audit --path /Users/chubes/Developer/data-machine@generic-http-proxy-auth --extension wordpress --changed-since origin/main

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: Drafted the HttpClient transport changes, smoke coverage, and local verification commands for Chris to review.

[homeboy-ci]

Homeboy Results — data-machine

Lint

✅ lint — passed

ℹ️ Full options: homeboy docs commands/lint
Deep dive: homeboy lint data-machine --changed-since e4ff5bb

Test

✅ test — passed

ℹ️ Auto-fix lint issues: homeboy refactor data-machine --from lint --write
ℹ️ Collect coverage: homeboy test data-machine --coverage
ℹ️ Pass args to test runner: homeboy test -- [args]
ℹ️ Full options: homeboy docs commands/test
Deep dive: homeboy test data-machine --changed-since e4ff5bb

Audit

✅ audit — passed

• requested_detectors — 118 finding(s)
• test_coverage — 26 finding(s)
• intra-method-duplication — 6 finding(s)
• dead_code — 3 finding(s)
• dead_guard — 2 finding(s)
• Directives — 1 finding(s)
• Retention — 1 finding(s)
• Total: 157 finding(s)

Deep dive: homeboy audit data-machine --changed-since e4ff5bb

Tooling versions

• Homeboy CLI: homeboy 0.179.8+7222a696
• Extension: wordpress from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: 0dd8782
• Action: unknown@unknown