bump versions to 15.0.0, drop git push from release targets

Co-Authored-By: Claude (Claude Opus 4.6) <noreply@anthropic.com>

Author: silverwind

Makefile

@@ -27,14 +27,11 @@ update: node_modules
 .PHONY: patch
 patch: node_modules test
 	pnpm exec versions -R patch package.json
-	git push -u --tags origin master
 
 .PHONY: minor
 minor: node_modules test
 	pnpm exec versions -R minor package.json
-	git push -u --tags origin master
 
 .PHONY: major
 major: node_modules test
 	pnpm exec versions -R major package.json
-	git push -u --tags origin master

package.json

@@ -26,7 +26,7 @@
     "typescript-config-silverwind": "17.0.0",
     "updates": "17.15.2",
     "updates-config-silverwind": "2.1.0",
-    "versions": "14.3.1",
+    "versions": "15.0.0",
     "vitest": "4.1.4",
     "vitest-config-silverwind": "11.1.4"
   },