feat(cli): add client commands and home-based local runtime defaults

server/src/home-paths.ts

@@ -0,0 +1,49 @@
+import os from "node:os";
+import path from "node:path";
+
+const DEFAULT_INSTANCE_ID = "default";
+const INSTANCE_ID_RE = /^[a-zA-Z0-9_-]+$/;
+
+function expandHomePrefix(value: string): string {
+  if (value === "~") return os.homedir();
+  if (value.startsWith("~/")) return path.resolve(os.homedir(), value.slice(2));
+  return value;
+}
+
+export function resolvePaperclipHomeDir(): string {
+  const envHome = process.env.PAPERCLIP_HOME?.trim();
+  if (envHome) return path.resolve(expandHomePrefix(envHome));
+  return path.resolve(os.homedir(), ".paperclip");
+}
+
+export function resolvePaperclipInstanceId(): string {
+  const raw = process.env.PAPERCLIP_INSTANCE_ID?.trim() || DEFAULT_INSTANCE_ID;
+  if (!INSTANCE_ID_RE.test(raw)) {
+    throw new Error(`Invalid PAPERCLIP_INSTANCE_ID '${raw}'.`);
+  }
+  return raw;
+}
+
+export function resolvePaperclipInstanceRoot(): string {
+  return path.resolve(resolvePaperclipHomeDir(), "instances", resolvePaperclipInstanceId());
+}
+
+export function resolveDefaultConfigPath(): string {
+  return path.resolve(resolvePaperclipInstanceRoot(), "config.json");
+}
+
+export function resolveDefaultEmbeddedPostgresDir(): string {
+  return path.resolve(resolvePaperclipInstanceRoot(), "db");
+}
+
+export function resolveDefaultLogsDir(): string {
+  return path.resolve(resolvePaperclipInstanceRoot(), "logs");
+}
+
+export function resolveDefaultSecretsKeyFilePath(): string {
+  return path.resolve(resolvePaperclipInstanceRoot(), "secrets", "master.key");
+}
+
+export function resolveHomeAwarePath(value: string): string {
+  return path.resolve(expandHomePrefix(value));
+}