fix: regenerate pnpm-lock.yaml after heroicons install, remove npm lockfile

@heroicons/react was installed with npm which created package-lock.json
instead of updating pnpm-lock.yaml. Docker build uses pnpm --frozen-lockfile
so the wrong lockfile caused build failure.

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

pnpm-lock.yaml

@@ -14,6 +14,9 @@ importers:
       '@graphql-tools/schema':
         specifier: ^10.0.33
         version: 10.0.33(graphql@16.14.2)
+      '@heroicons/react':
+        specifier: ^2.2.0
+        version: 2.2.0(react@19.2.4)
       drizzle-orm:
         specifier: ^0.45.2
         version: 0.45.2(postgres@3.4.9)
@@ -729,6 +732,11 @@ packages:
     resolution: {integrity: sha512-ZpJxMqB+Qfe3rp6uszCQoag4nSw42icURnBRfFYSOmTgEeOe4rD0vYlbA8spvCu2TlCesNTlEN9BLWtQqLxabA==}
     engines: {node: '>=18.0.0'}
 
+  '@heroicons/react@2.2.0':
+    resolution: {integrity: sha512-LMcepvRaS9LYHJGsF0zzmgKCUim/X3N/DQKc4jepAXJ7l8QxJ1PmxJzqplF2Z3FE4PqBAIGyJAQ/w4B5dsqbtQ==}
+    peerDependencies:
+      react: '>= 16 || ^19.0.0-rc'
+
   '@humanfs/core@0.19.2':
     resolution: {integrity: sha512-UhXNm+CFMWcbChXywFwkmhqjs3PRCmcSa/hfBgLIb7oQ5HNb1wS0icWsGtSAUNgefHeI+eBrA8I1fxmbHsGdvA==}
     engines: {node: '>=18.18.0'}
@@ -3218,6 +3226,10 @@ snapshots:
       '@repeaterjs/repeater': 3.1.0
       tslib: 2.8.1
 
+  '@heroicons/react@2.2.0(react@19.2.4)':
+    dependencies:
+      react: 19.2.4
+
   '@humanfs/core@0.19.2':
     dependencies:
       '@humanfs/types': 0.15.0