Simplify apps/cli/ code

- config.ts: Convert arrow functions to function declarations
- api-client.ts: Extract duplicated RPCLink logic into buildClient helper
- format-error.ts: Add centralized ORPCError handling
- complete-login.ts: Remove redundant error handling (now in formatError)
- status.ts: Simplify formatRelativeTime, improve whitespace
- create.ts: Rename validRoles to VALID_ROLES, add as const, early return
- completions.ts: Derive Shell type from SUPPORTED_SHELLS array

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

apps/cli/src/utils/config.ts

@@ -19,40 +19,42 @@ const CONFIG_FILE = join(CONFIG_DIR, "credentials.json");
 /**
  * Get the path to the config file
  */
-export const getConfigPath = (): string => CONFIG_FILE;
+export function getConfigPath(): string {
+  return CONFIG_FILE;
+}
 
 /**
  * Read the config file
  * Returns null if the file doesn't exist or is invalid
  */
-export const readConfig = async (): Promise<Config | null> => {
+export async function readConfig(): Promise<Config | null> {
   try {
     const data = await readFile(CONFIG_FILE, "utf-8");
     return JSON.parse(data) as Config;
   } catch {
     return null;
   }
-};
+}
 
 /**
  * Write the config file
  * Creates the config directory if it doesn't exist
  */
-export const writeConfig = async (config: Config): Promise<void> => {
+export async function writeConfig(config: Config): Promise<void> {
   await mkdir(CONFIG_DIR, { recursive: true, mode: 0o700 });
   await writeFile(CONFIG_FILE, JSON.stringify(config, null, 2), {
     mode: 0o600,
   });
-};
+}
 
 /**
  * Delete the config file
  * Ignores errors if the file doesn't exist
  */
-export const deleteConfig = async (): Promise<void> => {
+export async function deleteConfig(): Promise<void> {
   try {
     await unlink(CONFIG_FILE);
   } catch {
     // Ignore if doesn't exist
   }
-};
+}