ClientId is a product-level GUID registered at developer.connectwise.com,
not per-MSP. Moved to settings.CW_CLIENT_ID env var. MSPs now only
provide site URL, company ID, public key, and private key.
Also added newline handling note to post_note() — CW Developer Guide
states \n is unsupported in JSON bodies. Needs sandbox testing.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
ConnectWiseProvider implements PSAProvider with test_connection() that
calls GET /system/info to verify credentials and connectivity. All other
methods raise NotImplementedError with slice references for future work.
Provider registry (get_provider_for_account) looks up the account's
PsaConnection, decrypts stored credentials, and instantiates the
correct provider. Currently supports connectwise only.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
