Remove duplicate postcss dependency, remove zone.js dependency

bun.lock

@@ -15,7 +15,6 @@
         "@duckdb/duckdb-wasm": "^1.29.0",
         "@primeng/themes": "19.1.0",
         "@tailwindcss/postcss": "^4.1.3",
-        "postcss": "^8.5.3",
         "prettier": "^3.5.3",
         "primeicons": "^7.0.0",
         "primeng": "19.1.0",
@@ -24,7 +23,6 @@
         "tailwindcss-primeui": "0.6.1",
         "tslib": "^2.8.1",
         "zod": "^3.24.2",
-        "zone.js": "~0.15.0",
       },
       "devDependencies": {
         "@angular/build": "^20.0.0",