PUT /jobs/{jobId}/finalise

Finalises a draft job, turning it into an active job.

A draft job (created with isDraft: true via POST /jobs) has the status Draft, has no job number (jobNo and jobNumber are null), and doesn't appear in the Fergus job list. Finalising it:

• assigns the job its job number, after which it appears in the job list
• for Charge Up jobs, creates the job's first phase, and moves the job from To Price to Active
• sets the job's invoice due days from the customer's setting, or from the company default if the customer has none
• records the job as created by the authenticated user in the job's activity history

Quotes on the job aren't changed. A draft quote stays a draft, and isn't published or sent.

Required fields: the job must have a customer, site, job type, title and description. Use PUT /jobs/:jobId to fill in any that are missing first. If one is missing, the request fails with 400 and a message naming the first missing field, for example The job cannot be finalised: site must be set.

Finalising a job that's already finalised has no effect, and returns the job unchanged.

Request: send no body, with Content-Type: text/plain. Any other Content-Type, including application/json, is rejected with 400.