Add shared axum/reqwest response assertion helpers in fabro-test,
migrate the Rust HTTP test surface to use them, and document the
new rule in the testing strategy.
Remove the server startup path that inferred dry-run from provider
availability and let run.execution.mode inherit normally from
settings.
Model tests now return skip for unconfigured providers at request
time, completions use the real error path, and the CLI/docs/tests are
updated for the removed server --dry-run flag.
Replace the overlapping usage and cost model with canonical billing
primitives centered on ModelRef, ModelHandle, TokenCounts, and
BilledModelUsage. This also renames the public API and web surface from
usage to billing, removes compatibility aliases, and normalizes provider
usage adapters onto the shared billing vocabulary.
Move subprocess workers fully behind the server-owned run store by
switching worker/server coordination to HTTP-backed run events and
control state. Reconcile stale in-flight runs on boot, terminate live
workers during shutdown, and update process titles to reflect server and
worker lifecycle phases.
Move integration tests from monolithic api.rs into api/ (single-endpoint
contract tests) and scenario/ (multi-API-step flows), mirroring the CLI's
cmd/ vs scenario/ pattern. Move 3 scheduler-dependent unit tests from
server.rs into it/scenario/ where they get the correct nextest timeout
(kind=test override). Deduplicate shared helpers into helpers.rs.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
