Stability:
* `cli::run` now races command futures against `tokio::signal::ctrl_c()`.
On SIGINT the command future is dropped, which propagates to the
PagerGuard's Drop and restores stdout cleanly.
* Removed the unsafe `std::env::set_var("FJ_NO_PAGER")` in dispatch.
`--no-pager` is now threaded into `pager::maybe_start(force_disabled)`
as a parameter, no process-wide side effect.
* Replaced the panicking `.expect("token contains invalid header chars")`
in `auth_headers` with a typed error that names the host and tells the
user how to recover.
* Added 9 wiremock-backed integration tests covering: auth header
injection, retry-on-5xx for idempotent methods, no-retry for POST,
401 mapping to friendly error, custom header pass-through, null-body
list tolerance, `get_all` following Link rel=next, total_limit honored
on early break, malformed token rejection.
Optimization:
* Dropped unused reqwest features (stream, brotli) and unused crates
(indicatif, futures-util, is-terminal, textwrap, tempfile).
* `panic = "abort"` and `lto = "fat"` on the release profile.
* HTTP retry loop now builds the request once and uses
`reqwest::Request::try_clone` per attempt instead of rebuilding the
RequestBuilder (eliminates per-attempt HeaderMap + URL clones).
* Pulled debug-mode request logging behind a `#[cold]` helper so the
hot path stays small.
Binary: 5.94 MB → 4.15 MB stripped (-30%).
Tests: 51 → 60 (9 new integration tests).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>