Core API canary routing and Cordia admin billing.

Added Core API canary routing so selected Molten Bot HTTP route groups can use VITE_CORE_API_URL while unmigrated API traffic stays on the existing base URL.

Moved auth, profile, developer settings, LLM package, billing, Hub schedule, and communications calls onto the migrated Core API route list with regression coverage.

Let Cordia admins create projects without billing authorization checks, skipping the billing API when admin privileges are already confirmed.

Let Cordia admins submit release tasks without billing authorization checks while preserving Hub dispatch and stored release task creation.