Remove deprecated #[axum::async_trait] from 2 middleware files (native
async traits on Rust 1.88+). Fix 71 stub handlers: change return type
from ApiResult<impl IntoResponse> to ApiResult<Json<Value>> and replace
todo!() with proper JSON stub responses. Clean compile, zero errors.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
88 handler stubs across 13 route files, 66 DB query stubs across
11 modules, auth/license extractors, and rate limit middleware.
All bodies are todo!() — ready for Phase 1b implementation.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>