Publish pipeline: goreleaser + Maven Central + npm (#1)

* feat(cli): add Version var and version subcommand

* build(gradle): introduce uatu.version property for lockstep releases

* build(sdk-android): swap GitHub Packages for vanniktech Maven Central plugin

* build(spec-api): make package publish-ready for npm

* ci(release): add goreleaser config for cross-platform uatu CLI builds

* ci: add ci and release GitHub Actions workflows

* ci: restrict ci.yml to PR + workflow_dispatch (no direct push to master)

* docs(release): add local release targets, env example, and install docs

* build(sdk-android): make signAllPublications conditional on signing key

* ci(release): stage sidecar JAR at embed path before go build

* chore(spec-api): regenerate package-lock for updated package.json

* ci: install protoc-gen-go plugins before buf generate

* ci: bump Node to 22 (required for --experimental-strip-types)

pkg/spec-api/package.json

@@ -1,17 +1,42 @@
 {
   "name": "@uatu/spec",
-  "version": "0.0.1",
-  "description": "TypeScript spec API for Uatu (vendored locally; not published to npm in v0.1).",
-  "private": true,
+  "version": "0.0.0-dev",
+  "description": "TypeScript spec API for uatu — a property-based UI fuzzer for mobile apps.",
   "type": "module",
-  "main": "src/index.ts",
-  "types": "src/index.ts",
+  "types": "./dist/index.d.ts",
+  "main": "./dist/index.js",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    }
+  },
+  "files": [
+    "dist",
+    "README.md"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/priyanshujain/uatu.git",
+    "directory": "pkg/spec-api"
+  },
+  "homepage": "https://github.com/priyanshujain/uatu",
+  "bugs": {
+    "url": "https://github.com/priyanshujain/uatu/issues"
+  },
+  "license": "Apache-2.0",
+  "author": "Priyanshu Jain",
   "scripts": {
+    "build": "tsc -p tsconfig.build.json",
+    "prepublishOnly": "npm run build",
     "check": "tsc --noEmit",
     "test": "node --test --experimental-strip-types test/*.test.ts"
   },
+  "publishConfig": {
+    "access": "public"
+  },
   "devDependencies": {
     "@types/node": "^22.7.5",
-    "typescript": "^5.6.3"
+    "typescript": "^5.9.3"
   }
 }