[Snow Team] Merge config-fixer's work with conflict resolution

apps/backend/src/config/env-overrides.ts

@@ -5,11 +5,21 @@ import type {
   AdminDefaultUser,
   RuntimeConfig,
 } from "../types/runtime-config.js";
-import { parseBoolean, parseInteger, parseJsonArray } from "./runtime-env.js";
+import {
+  parseBoolean,
+  parseInteger,
+  parseJsonArray,
+  parseCommaSeparatedStrings,
+} from "./runtime-env.js";
 import { deepMerge } from "./runtime-merge.js";
 
 type RuntimeConfigPath = readonly [string, ...string[]];
-type RuntimeConfigValue = string | number | boolean | AdminDefaultUser[];
+type RuntimeConfigValue =
+  | string
+  | number
+  | boolean
+  | AdminDefaultUser[]
+  | string[];
 type RuntimeEnv = Record<string, string | undefined>;
 
 type EnvOverride = {
@@ -347,31 +357,51 @@ function booleanEnv(env: string, configPath: RuntimeConfigPath): EnvOverride {
   };
 }
 
-function adminUsersJsonEnv(env: string, configPath: RuntimeConfigPath): EnvOverride {
+function adminUsersJsonEnv(
+  env: string,
+  configPath: RuntimeConfigPath
+): EnvOverride {
   return {
     env,
     path: configPath,
     read(rawValue) {
-      return parseJsonArray<AdminDefaultUser>(rawValue)
+      return parseJsonArray<AdminDefaultUser>(rawValue);
     },
-  }
+  };
 }
 
-function corsOriginsEnv(env: string, configPath: RuntimeConfigPath): EnvOverride {
+function stringArrayEnv(
+  env: string,
+  configPath: RuntimeConfigPath
+): EnvOverride {
+  return {
+    env,
+    path: configPath,
+    read: parseCommaSeparatedStrings,
+  };
+}
+
+function corsOriginsEnv(
+  env: string,
+  configPath: RuntimeConfigPath
+): EnvOverride {
   return {
     env,
     path: configPath,
     read(rawValue) {
-      const value = parseString(rawValue)
+      const value = parseString(rawValue);
       if (value === null) {
-        return null
+        return null;
       }
-      if (value.trim() === '*') {
-        return ['*']
+      if (value.trim() === "*") {
+        return ["*"];
       }
-      return value.split(',').map((s) => s.trim()).filter(Boolean)
+      return value
+        .split(",")
+        .map((s) => s.trim())
+        .filter(Boolean);
     },
-  }
+  };
 }
 
 function parseString(rawValue: unknown): string | null {