chore: bump version to 1.4.0, remove npm release scripts

Sync package.json version with marketplace.json (1.4.0) for the
installer's version detection. Remove release:* scripts and
publishConfig — npm releases are no longer used.

Author: bmadcode

package.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "bmad-builder",
-  "version": "1.1.0",
+  "version": "1.4.0",
   "private": true,
   "description": "A BMad Core expansion module that guides users through the creation of Modules Workflow and Agents",
   "keywords": [
@@ -31,11 +31,6 @@
     "lint:fix": "eslint . --ext .js,.cjs,.mjs,.yaml --fix",
     "lint:md": "markdownlint-cli2 \"**/*.md\"",
     "prepare": "husky || exit 0",
-    "release": "npm run release:patch",
-    "release:major": "npm version major && git push --follow-tags",
-    "release:minor": "npm version minor && git push --follow-tags",
-    "release:patch": "npm version patch && git push --follow-tags",
-    "release:prerelease": "npm version prerelease && git push --follow-tags",
     "test": "npm run test:schemas && npm run test:refs && npm run validate:schemas && npm run lint && npm run lint:md && npm run format:check",
     "test:refs": "node test/test-validate-file-refs.cjs",
     "test:schemas": "node test/test-agent-schema.js",
@@ -92,8 +87,5 @@
   },
   "engines": {
     "node": ">=22.0.0"
-  },
-  "publishConfig": {
-    "access": "public"
   }
 }