build(turbo): gate vite-demo typecheck on own build to fix sidecar race

The global typecheck task dependsOn [^build, sync] only — not the
package's own build. The 5 vite-demo consumers include unplugin-emitted
.d.rozie.ts sidecars via src/**/*, so under `turbo … --force` a
package's own build (which rewrites those sidecars) races its typecheck
(which reads them), producing a transient red that passes on re-run.

Add package-scoped #typecheck overrides for react-vite-demo,
solid-vite-demo, svelte-vite-demo, vue-vite-demo, and lit-vanilla-demo
so each typecheck now depends on its own build. Global typecheck left
untouched so toolchain packages avoid the extra serialization.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: serpentblade

turbo.json

@@ -40,6 +40,26 @@
       "dependsOn": ["^build", "sync"],
       "outputs": []
     },
+    "react-vite-demo#typecheck": {
+      "dependsOn": ["build", "^build", "sync"],
+      "outputs": []
+    },
+    "solid-vite-demo#typecheck": {
+      "dependsOn": ["build", "^build", "sync"],
+      "outputs": []
+    },
+    "svelte-vite-demo#typecheck": {
+      "dependsOn": ["build", "^build", "sync"],
+      "outputs": []
+    },
+    "vue-vite-demo#typecheck": {
+      "dependsOn": ["build", "^build", "sync"],
+      "outputs": []
+    },
+    "lit-vanilla-demo#typecheck": {
+      "dependsOn": ["build", "^build", "sync"],
+      "outputs": []
+    },
     "dev": {
       "dependsOn": ["^build", "sync"],
       "cache": false,