feat(migration): add initial Astro framework shim configuration and related files

Author: naokihaba

packages/cli/snap-tests-global/migration-framework-shim-astro/package.json

@@ -0,0 +1,7 @@
+{
+  "name": "migration-framework-shim-astro",
+  "devDependencies": {
+    "astro": "^4.0.0",
+    "vite": "^7.0.0"
+  }
+}

packages/cli/snap-tests-global/migration-framework-shim-astro/snap.txt

@@ -0,0 +1,11 @@
+> vp migrate --no-interactive --no-hooks # migration should add Astro shim when astro dependency is detected
+VITE+ - The Unified Toolchain for the Web
+
+◇ Migrated . to Vite+<repeat>
+• Node <semver>  pnpm <semver>
+✓ Dependencies installed in <variable>ms
+• 1 config update applied
+• TypeScript shim added for framework component files
+
+> cat src/env.d.ts # check Astro shim was written
+/// <reference types="astro/client" />

packages/cli/snap-tests-global/migration-framework-shim-astro/src/.gitkeep

@@ -0,0 +1,12 @@
+{
+  "ignoredPlatforms": ["win32"],
+  "env": {
+    "VITE_DISABLE_AUTO_INSTALL": "1",
+    "CI": "",
+    "VP_SKIP_INSTALL": ""
+  },
+  "commands": [
+    "vp migrate --no-interactive --no-hooks # migration should add Astro shim when astro dependency is detected",
+    "cat src/env.d.ts # check Astro shim was written"
+  ]
+}