Dependency-only refresh to published Dateutil v2.9.1. DateParser runtime algorithms, public APIs, locale/conversion data, and caller-owned concurrency are unchanged.
Dependency: Rust-Dateutil v2.9.1 at 3a7537dd3a4e223756fa31fb1941a10da4c78b30.
Source commit: 1e3e2feccd8662113e4092ca87a5567e4e23bc3c.
Python dateparser 1.4.3 and python-dateutil 2.9.0.post0 remain the behavioral references. CPython 3.14.6 rechecked the current Go dependency graph: the same 75 core and 16 search-result corrections passed. Historical fixtures and their original source identities are unchanged.
Local qualification: Rust 1.98.1 Linux debug/release and Windows GNU release tests: 52 tests plus 3 doctests; strict Clippy and formatting; both live Go checks; clean committed source-archive tests with locked offline dependencies.
Existing v1.4.3/v1.4.5/v1.4.6 benchmark measurements retain their original version labels. No v1.4.7 performance measurement or gain is claimed.
See the versioned README for installation, historical measurements, reproduction commands and compatibility limits.
GitHub source release only, not crates.io. Cargo Git builds are verified. Registry packaging requires publication of the Git-only rust-dateutil dependency and is not supported.