fix(cli): clearer profile/proxy/api errors and rich not-found suggestions

Move resolveProfileAndTarget() inside the try block in ccs.ts so a missing
profile shows suggestions/available-profiles instead of a generic error. Use a
typed ProfileError for proxy start on an unknown profile (drops the irrelevant
install hint). api create: honor --yes for the OpenRouter model browser, show
ccs-codex/ccsx aliases for --target codex, and allow ANTHROPIC_EXTRA_MODELS on
import.

src/api/services/profile-lifecycle-validation.ts

@@ -23,6 +23,8 @@ const ALLOWED_ANTHROPIC_ENV_KEYS = new Set<string>([
   'ANTHROPIC_BASE_URL',
   'ANTHROPIC_AUTH_TOKEN',
   'ANTHROPIC_API_KEY',
+  // Written by profile-writer when --extra-models is supplied
+  'ANTHROPIC_EXTRA_MODELS',
   ...MODEL_ENV_KEYS,
 ]);