Bump deps (#515)

* chore: add nix flake for reproducible dev environment

Signed-off-by: Sped0n <hi@sped0n.com>

* refactor: migrate SCSS to modern Sass (@use/@forward)

Update mixins to use Sass module functions (map.has-key/get).
Configure Vite for modern Sass API.
Introduce _foundation.scss for forwarding core modules.

Signed-off-by: Sped0n <hi@sped0n.com>

* fix: replace deprecated _build with build in frontmatter

Signed-off-by: Sped0n <hi@sped0n.com>

* chore: add vcache.sh script for vercel build cache management

Signed-off-by: Sped0n <hi@sped0n.com>

* refactor: migrate to ESLint v9 flat config

Remove legacy .eslintrc.json, .eslintignore, and .prettierrc.json.

Add eslint.config.mjs with love, prettier, solid, and import rules.

Update devDependencies (eslint@9, @typescript-eslint@8, etc.) and scripts.

Minor TS fixes: remove eslint-disable, add error logging, simplify conditional.

Signed-off-by: Sped0n <hi@sped0n.com>

* chore: replace vcache.sh with vercel.sh for Vercel build process

Delete vcache.sh script.

Add vercel.sh: install Dart Sass v1.93.3, copy generated assets between
node_modules and project dirs, run vite:build + hugo build, then copy back.

Signed-off-by: Sped0n <hi@sped0n.com>

* chore: setup dart-sass and split build steps in GitHub workflow

Signed-off-by: Sped0n <hi@sped0n.com>

---------

Signed-off-by: Sped0n <hi@sped0n.com>

vite.config.ts

@@ -5,9 +5,11 @@ export default defineConfig({
   plugins: [solidPlugin()],
   build: {
     outDir: './static/bundled',
-    watch: {
-      include: 'assets/**'
-    },
+    watch: process.env.DISABLE_WATCH
+      ? null
+      : {
+          include: 'assets/**'
+        },
     rollupOptions: {
       input: './assets/ts/main.tsx',
       output: {
@@ -17,13 +19,12 @@ export default defineConfig({
         assetFileNames: '[ext]/[name].[ext]',
         compact: true
       }
-    },
-    terserOptions: {
-      compress: {
-        passes: 3
-      },
-      output: {
-        comments: false
+    }
+  },
+  css: {
+    preprocessorOptions: {
+      scss: {
+        api: 'modern'
       }
     }
   }