#163 feat(models): list cloud models with --cloud and --all, add --local

Closes #98.

wally models list --cloud lists the cloud models on your account, tagged [cloud] in blue. --all now shows the local catalog plus those cloud models, and --local shows the local catalog alone (what --all used to do). The cloud lookup gives up after 3 seconds and falls back to the last saved list, so the command never hangs offline.

Tested manually on macOS, online and with the console unreachable.

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Summary by cubic

wally models list now separates local and cloud models: --cloud lists your account's cloud models (tagged [cloud]), --local shows the whole local catalog, and --all shows both. Previously --all only listed the local catalog.

New Features

• Cloud lookups time out after 3 seconds and fall back to the last saved list, so the command never hangs offline.
• --json rows now include a cloud field marking cloud models.

Summary by CodeRabbit

• New Features

  • wally models list now supports separate --local and --cloud filters, with --all combining local catalog and account cloud models. The default continues to show downloaded models.
  • Cloud models appear in table and JSON output when available. If cloud lookup fails, combined listings still show local results; cloud-only listings report an error when no cached results are available.

• Documentation

  • Updated command help and guides to explain model listing filters and clarify the different model scopes.