chore: finalize v1.2.0

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@opengsd/gsd-core",
-  "version": "1.2.0-rc.1",
+  "version": "1.2.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@opengsd/gsd-core",
-      "version": "1.2.0-rc.1",
+      "version": "1.2.0",
       "license": "MIT",
       "dependencies": {
         "@anthropic-ai/claude-agent-sdk": "^0.2.84",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@opengsd/gsd-core",
-  "version": "1.2.0-rc.1",
+  "version": "1.2.0",
   "description": "A meta-prompting, context engineering and spec-driven development system for Claude Code, OpenCode, Gemini and Codex by TÂCHES.",
   "bin": {
     "gsd-core": "bin/install.js",