Wire release pipeline to crates.io, PyPI, and npm

On every v* tag push the release workflow now publishes the project to
all three public registries in parallel:

- crates.io: wickra-core then wickra-data then wickra, with a 45-second
  sleep between each so the registry index can refresh before the next
  publish step asserts the previous version is available.

- PyPI: maturin-action builds wheels for Linux x86_64 + aarch64, macOS
  x86_64 + aarch64, and Windows x64, plus an sdist; all artefacts upload
  to PyPI via MATURIN_PYPI_TOKEN.

- npm: napi-rs builds a native binary per platform (linux-x64-gnu,
  darwin-x64, darwin-arm64, win32-x64-msvc), publishes each as its own
  platform package, then publishes the main `wickra` meta-package
  that resolves to the right platform at install time.

- WASM: wasm-pack builds the bundler-target package and publishes it as
  `wickra-wasm` on npm, with the auto-generated package.json enriched
  with the author/repo/license metadata.

Package metadata was unified so all targets point at kingchenc/wickra
on GitHub; the Node binding is now plain `wickra` (the @wickra/ scope
was unnecessary because the bare name was free). README install table
updated to match.

bindings/node/package.json

@@ -1,7 +1,8 @@
 {
-  "name": "@wickra/wickra",
+  "name": "wickra",
   "version": "0.1.0",
   "description": "Streaming-first technical indicators: incremental, fast, install-free. Node bindings powered by Rust.",
+  "author": "kingchenc <kingchencp@gmail.com>",
   "main": "index.js",
   "types": "index.d.ts",
   "license": "SEE LICENSE IN LICENSE",
@@ -16,8 +17,12 @@
   ],
   "repository": {
     "type": "git",
-    "url": "https://github.com/wickra/wickra"
+    "url": "https://github.com/kingchenc/wickra"
   },
+  "bugs": {
+    "url": "https://github.com/kingchenc/wickra/issues"
+  },
+  "homepage": "https://github.com/kingchenc/wickra",
   "files": [
     "index.js",
     "index.d.ts",
@@ -47,7 +52,10 @@
   "scripts": {
     "build": "napi build --platform --release",
     "build:debug": "napi build --platform",
+    "artifacts": "napi artifacts",
     "prepublishOnly": "napi prepublish -t npm",
+    "universal": "napi universal",
+    "version": "napi version",
     "test": "node --test __tests__/"
   },
   "devDependencies": {