feat(cli): dsh CLI with personal config overlays from ~/.config/dsh

apps/cli/src/bin.ts

@@ -0,0 +1,23 @@
+#!/usr/bin/env node
+/**
+ * dsh — command-line entry. Coarse dispatch only; each surface module owns its
+ * own argument handling. `web` and `-p`/`--prompt` are reserved for the
+ * browser GUI and headless surfaces (PR #443) so that dispatch merges as a
+ * union; everything else is the interactive TUI, the default surface.
+ * @module @deepseek-ai/dsh/bin
+ */
+
+/* v8 ignore file -- thin self-executing dispatch; the tui-agent PTY smoke
+   exercises the TUI path end to end */
+
+import { loadEnv } from '@deepseek-ai/dsh-app-boot'
+import { runTui } from './tui.ts'
+
+loadEnv('dsh')
+const argv = process.argv.slice(2)
+
+if (argv[0] === 'web' || argv.includes('-p') || argv.includes('--prompt')) {
+  process.stderr.write('dsh: the web and headless surfaces are not on this branch (PR #443); run the TUI: dsh [config.yml]\n')
+  process.exit(1)
+}
+await runTui(argv)