8786636f7c
Four issues from the review of the initial repospawner service, none of which change the shape of a request or the file terraform-git receives. - Encode status checks as one --check flag per context on the server-to-job hop, so a separator inside a context can no longer turn one context into several; ban commas (and cap lengths) in Validate as well, since a real context never holds one. - Fail a merged request that has waited five minutes for a Woodpecker token that vanished after acceptance, surfacing "woodpecker token unavailable" through the API, instead of warning in the log forever from enabling-ci. Advance now leaves a terminal request alone so the failure sticks. - Hold a per-name lock from the duplicate checks through the store write, so two concurrent submissions of one name cannot both be accepted. - Cap the description at 500 characters and the status checks at 20 contexts of 100 characters each, and mirror the first two caps in the form.