feat(cli): restructure run folder and improve terminal UX (#384)

* feat: surface report at run root and nest run internals under .shannon

* feat: use plain-language wording in user-facing terminal messages

* feat(cli): guide users to watch scan progress and surface report path on start

* docs: sync run-folder layout and CLI wording across docs and comments

* feat(cli): add version command reporting package version or git SHA

* feat(cli): detect TTY for interactive prompts, color, and progress output

* docs: document --yes flag, version command, and tty module

* fix(cli): FORCE_COLOR precedence and plain uninstall --yes output

* fix(cli): respect empty NO_COLOR

* fix(cli): let NO_COLOR take precedence over FORCE_COLOR

* docs: mark claude-code-router integration as removed

apps/cli/src/commands/setup.ts

@@ -10,12 +10,14 @@ import os from 'node:os';
 import path from 'node:path';
 import * as p from '@clack/prompts';
 import { type ShannonConfig, saveConfig } from '../config/writer.js';
+import { requireInteractive } from '../tty.js';
 
 const SHANNON_HOME = path.join(os.homedir(), '.shannon');
 
 type Provider = 'anthropic' | 'custom_base_url' | 'bedrock' | 'vertex';
 
 export async function setup(): Promise<void> {
+  requireInteractive('setup', 'For non-interactive use, export credentials as env vars (e.g. ANTHROPIC_API_KEY).');
   p.intro('Shannon Setup');
 
   // 1. Select provider