fix(changeset): update mode to "exit" and bump pnpm version

Changed the "mode" in `.changeset/pre.json` from "pre" to "exit" to signify the end of the pre-release phase. Upgraded `pnpm` from `10.11.1` to `10.12.1` in `package.json` for improved dependency management.

Author: thevuong

.changeset/pre.json

@@ -1,5 +1,5 @@
 {
-  "mode": "pre",
+  "mode": "exit",
   "tag": "canary",
   "initialVersions": {
     "@app/docs": "0.0.1",

package.json

@@ -50,7 +50,7 @@
     "tsx": "^4.20.3",
     "turbo": "^2.5.4"
   },
-  "packageManager": "pnpm@10.11.1",
+  "packageManager": "pnpm@10.12.1",
   "engines": {
     "node": "^22"
   }