feat: add configurable paseo home and port

packages/server/src/server/config.ts

@@ -0,0 +1,37 @@
+import os from "node:os";
+import path from "node:path";
+import { mkdirSync } from "node:fs";
+
+let cachedHomeDir: string | null = null;
+let cachedPort: number | null = null;
+
+function expandHomeDir(input: string): string {
+  if (input.startsWith("~/")) {
+    return path.join(os.homedir(), input.slice(2));
+  }
+  if (input === "~") {
+    return os.homedir();
+  }
+  return input;
+}
+
+export function resolvePaseoHome(): string {
+  if (cachedHomeDir) {
+    return cachedHomeDir;
+  }
+  const raw = process.env.PASEO_HOME ?? process.env.PASEO_HOME_DIR ?? "~/.paseo";
+  const expanded = path.resolve(expandHomeDir(raw));
+  mkdirSync(expanded, { recursive: true });
+  cachedHomeDir = expanded;
+  return cachedHomeDir;
+}
+
+export function resolvePaseoPort(): number {
+  if (cachedPort !== null) {
+    return cachedPort;
+  }
+  const raw = process.env.PASEO_PORT ?? process.env.PORT ?? "6767";
+  const parsed = Number.parseInt(raw, 10);
+  cachedPort = Number.isFinite(parsed) ? parsed : 6767;
+  return cachedPort;
+}