FLUX.1 [dev] was removed from Cloudflare Workers AI in April 2026,
returning HTTP 400 "No route for that URI". This removes it from the
static model picker list and pricing calculations. Any saved setting
referencing flux-1-dev gracefully falls through to flux-1-schnell
via the null-coalesce in resolve_model().
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implements image-provider interface + Cloudflare Workers AI adapter with pricing and validator. Independent QA verdict: APPROVE on 52fd11e (qa-reviews/prautoblogger/2026-04-15-52fd11e2ce97dd9e659df5cc87ec1382a668bec1.md). All 4 CTO blockers resolved (PHPUnit retry mocks, XSS hardening on error strings, PHPCS on new files, 300-line cap via support-class extraction). PHPCS backlog (586 errors across 38 pre-existing files) remains on continue-on-error; Workstream C material.
