refactor: centralize daemon path resolution

src/daemon/paths.ts

@@ -0,0 +1,37 @@
+import path from "node:path";
+
+import { resolveGatewayProfileSuffix } from "./constants.js";
+
+const windowsAbsolutePath = /^[a-zA-Z]:[\\/]/;
+const windowsUncPath = /^\\\\/;
+
+export function resolveHomeDir(env: Record<string, string | undefined>): string {
+  const home = env.HOME?.trim() || env.USERPROFILE?.trim();
+  if (!home) throw new Error("Missing HOME");
+  return home;
+}
+
+export function resolveUserPathWithHome(input: string, home?: string): string {
+  const trimmed = input.trim();
+  if (!trimmed) return trimmed;
+  if (trimmed.startsWith("~")) {
+    if (!home) throw new Error("Missing HOME");
+    const expanded = trimmed.replace(/^~(?=$|[\\/])/, home);
+    return path.resolve(expanded);
+  }
+  if (windowsAbsolutePath.test(trimmed) || windowsUncPath.test(trimmed)) {
+    return trimmed;
+  }
+  return path.resolve(trimmed);
+}
+
+export function resolveGatewayStateDir(env: Record<string, string | undefined>): string {
+  const override = env.CLAWDBOT_STATE_DIR?.trim();
+  if (override) {
+    const home = override.startsWith("~") ? resolveHomeDir(env) : undefined;
+    return resolveUserPathWithHome(override, home);
+  }
+  const home = resolveHomeDir(env);
+  const suffix = resolveGatewayProfileSuffix(env.CLAWDBOT_PROFILE);
+  return path.join(home, `.clawdbot${suffix}`);
+}