release: bump 0.4.5 -> 0.4.6 (#151)

Routine patch release. Ships the **19 TA-Lib parity indicators** (DM components, price transforms, ROC ratio forms, LinReg intercept / TSF, MACDFIX / MACDEXT / SAREXT, Hilbert phasor / DC-phase / trend-mode) added in #148, with the cold-path coverage fix from #150 — indicator count **314**, repo back at 100%.

Version strings bumped `0.4.5 -> 0.4.6` across:
- `Cargo.toml` (workspace + `wickra-core` dep), `Cargo.lock`
- `bindings/python/pyproject.toml`
- `bindings/node/package.json` (+ 6 optional platform deps) and the 6 `npm/<platform>/package.json`
- `bindings/node/package-lock.json`, `examples/node/package-lock.json`
- `CHANGELOG.md` — `[Unreleased]` rolled into `[0.4.6] - 2026-06-03` with refreshed compare links

No code changes. `fmt` / `clippy --workspace -D warnings` green locally.

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.6] - 2026-06-03
+
 ### Added
 
 - **TA-Lib parity — Directional Movement components** — the ADX building blocks,
@@ -1122,7 +1124,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   optional Binance live feed.
 - Bindings for Python, Node.js, and WebAssembly.
 
-[Unreleased]: https://github.com/wickra-lib/wickra/compare/v0.4.5...HEAD
+[Unreleased]: https://github.com/wickra-lib/wickra/compare/v0.4.6...HEAD
+[0.4.6]: https://github.com/wickra-lib/wickra/compare/v0.4.5...v0.4.6
 [0.4.5]: https://github.com/wickra-lib/wickra/compare/v0.4.4...v0.4.5
 [0.4.4]: https://github.com/wickra-lib/wickra/compare/v0.4.3...v0.4.4
 [0.4.3]: https://github.com/wickra-lib/wickra/compare/v0.4.2...v0.4.3