Rename @reviq/utils to @reviq/server-utils and add package READMEs

- Rename packages/utils/ to packages/server-utils/
- Update all imports and package.json references
- Add READMEs for frontend-utils, server-utils, and common packages
- Update main README with new package structure

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

bun.lock

@@ -22,7 +22,7 @@
         "@reviq/api-contract": "workspace:*",
         "@reviq/db": "workspace:*",
         "@reviq/db-schema": "workspace:*",
-        "@reviq/utils": "workspace:*",
+        "@reviq/server-utils": "workspace:*",
         "@scure/base": "^2.0.0",
         "@simplewebauthn/server": "^13.2.2",
         "@simplewebauthn/types": "^12.0.0",
@@ -148,7 +148,7 @@
       "dependencies": {
         "@noble/hashes": "^2.0.1",
         "@reviq/db-schema": "workspace:*",
-        "@reviq/utils": "workspace:*",
+        "@reviq/server-utils": "workspace:*",
         "@scure/base": "^2.0.0",
         "kysely": "^0.28.9",
         "pg": "^8.13.1",
@@ -191,6 +191,18 @@
         "typescript": "catalog:",
       },
     },
+    "packages/server-utils": {
+      "name": "@reviq/server-utils",
+      "version": "0.0.1",
+      "devDependencies": {
+        "@cloudflare/workers-types": "^4.20250529.0",
+        "@macalinao/eslint-config": "catalog:",
+        "@macalinao/tsconfig": "catalog:",
+        "@types/bun": "catalog:",
+        "eslint": "catalog:",
+        "typescript": "catalog:",
+      },
+    },
     "packages/testing/test-helpers": {
       "name": "@reviq/test-helpers",
       "version": "0.0.1",
@@ -224,18 +236,6 @@
         "typescript": "catalog:",
       },
     },
-    "packages/utils": {
-      "name": "@reviq/utils",
-      "version": "0.0.1",
-      "devDependencies": {
-        "@cloudflare/workers-types": "^4.20250529.0",
-        "@macalinao/eslint-config": "catalog:",
-        "@macalinao/tsconfig": "catalog:",
-        "@types/bun": "catalog:",
-        "eslint": "catalog:",
-        "typescript": "catalog:",
-      },
-    },
   },
   "catalog": {
     "@macalinao/eslint-config": "^7.0.3",
@@ -456,9 +456,9 @@
 
     "@reviq/frontend-utils": ["@reviq/frontend-utils@workspace:packages/frontend-utils"],
 
-    "@reviq/test-helpers": ["@reviq/test-helpers@workspace:packages/testing/test-helpers"],
+    "@reviq/server-utils": ["@reviq/server-utils@workspace:packages/server-utils"],
 
-    "@reviq/utils": ["@reviq/utils@workspace:packages/utils"],
+    "@reviq/test-helpers": ["@reviq/test-helpers@workspace:packages/testing/test-helpers"],
 
     "@reviq/virtual-authenticator": ["@reviq/virtual-authenticator@workspace:packages/testing/virtual-authenticator"],