refactor(migration): remove redundant auto-migration message for .nvmrc

Author: naokihaba

packages/cli/snap-tests-global/migration-nvmrc-lts/snap.txt

@@ -1,8 +1,6 @@
 > vp migrate --no-interactive # migration should detect .nvmrc with lts alias and auto-migrate
 VITE+ - The Unified Toolchain for the Web
 
-
-.nvmrc detected. Auto-migrating to .node-version...
 ◇ Migrated . to Vite+<repeat>
 • Node <semver>  pnpm <semver>
 • 2 config updates applied

packages/cli/snap-tests-global/migration-nvmrc-node-alias/snap.txt

@@ -1,9 +1,6 @@
 > vp migrate --no-interactive # 'node' alias should be mapped to lts/* with an info message
 VITE+ - The Unified Toolchain for the Web
 
-
-.nvmrc detected. Auto-migrating to .node-version...
-
 "node" in .nvmrc is not a specific version; automatically mapping to "lts/*"
 ◇ Migrated . to Vite+<repeat>
 • Node <semver>  pnpm <semver>

packages/cli/snap-tests-global/migration-nvmrc/snap.txt

@@ -1,8 +1,6 @@
 > vp migrate --no-interactive # migration should detect .nvmrc and auto-migrate to .node-version
 VITE+ - The Unified Toolchain for the Web
 
-
-.nvmrc detected. Auto-migrating to .node-version...
 ◇ Migrated . to Vite+<repeat>
 • Node <semver>  pnpm <semver>
 • 2 config updates applied

packages/cli/src/migration/bin.ts

@@ -182,7 +182,6 @@ async function confirmNodeVersionFileMigration(interactive: boolean): Promise<bo
     }
     return !!confirmed;
   }
-  prompts.log.info('.nvmrc detected. Auto-migrating to .node-version...');
   return true;
 }