style: switch from tab to space indentation in frontend and worker/php

Update biome.json indentStyle from "tab" to "space" and reformat all
files in both workspaces.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/frontend/postcss.config.js b/frontend/postcss.config.js
index 017b34b..c2ddf74 100644
--- a/frontend/postcss.config.js
+++ b/frontend/postcss.config.js
@@ -1,5 +1,5 @@
 export default {
-	plugins: {
-		"@tailwindcss/postcss": {},
-	},
+  plugins: {
+    "@tailwindcss/postcss": {},
+  },
 };