AddAccessReviewSourceDialog had grown past a thousand lines, mixing
provider search, the API-key, client-credentials and OAuth connect
flows, and their shared mutation logic in one file.
Extract the per-protocol dialogs into _components, the shared
create-source flow into a _hooks hook, and the settings mappers and
OAuth redirect helper into _lib. Each connect dialog now owns its own
Relay operation. The API-key dialog carries the Crisp managed-connector
flow: it fetches the verification code for the entered Website ID and
distinguishes loading, ready and error states, so a failed fetch shows
an actionable error with a retry instead of a permanent spinner and a
superseded response cannot overwrite the current code.
Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>
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