feat(setup): brand setup:auto with @clack/prompts + brand palette

Wraps the scripted setup flow in a branded, friendly UI. Each step runs
under a clack spinner with elapsed time; child stdout/stderr is captured
quietly and dumped only on failure. Interactive children (token paste,
Anthropic OAuth) bypass the spinner and inherit the TTY.

- intro: NanoClaw wordmark + brand-cyan accent chip, truecolor with
  kleur fallback and NO_COLOR / non-TTY awareness
- pair-telegram: emits PAIR_TELEGRAM_CODE / _ATTEMPT status blocks only;
  auto.ts renders clack notes + "received X — doesn't match" checkpoints
- streaming status-block parser handles mid-step events without waiting
  for the child to exit
- terminal-block detection now finds any block with a STATUS field
  (handles MOUNTS emitting CONFIGURE_MOUNTS, etc.) and treats 'skipped'
  as a success variant with an optional friendlier label

Also fixes a latent bash bug where `$VAR…` (unbraced followed by a
multi-byte Unicode character) pulled ellipsis bytes into the variable
name lookup and tripped `set -u`. Braced `${VAR}` in add-telegram.sh
and register-claude-token.sh.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -24,10 +24,13 @@
     "test:watch": "vitest"
   },
   "dependencies": {
+    "@chat-adapter/telegram": "4.26.0",
+    "@clack/prompts": "^1.2.0",
     "@onecli-sh/sdk": "^0.3.1",
     "better-sqlite3": "11.10.0",
     "chat": "^4.24.0",
-    "cron-parser": "5.5.0"
+    "cron-parser": "5.5.0",
+    "kleur": "^4.1.5"
   },
   "devDependencies": {
     "@eslint/js": "^9.35.0",