- DELETE, PUT and POST reorder under .../{id}/files/{field}, each scoped by one parent query (404 for a foreign file)
- protected download and thumb routes: is_public=false only, nosniff, private no-store, sandbox CSP, inline only for jpeg/png/gif/webp
- the save applies deferred removals, replaces attachOne files and rechecks maxFiles and required
- blobs of deleted files are removed after commit
- swagger2openapi emits binary content for file responses
- admin OpenAPI, TS types, conformance, README and attachments docs
- type: fileupload compiles the D-08 keys and binds to the model's attach.Relation at boot
- X-Session-Key (cabana.SessionKeyHeader) carries the form session key; RecordInput.SessionKey
- GET and POST .../{id}/files/{field}: list with pending uploads, multipart upload into attach.Store
- the create and update save attaches the session's pending files in its transaction
- swagger2openapi folds formData parameters into a multipart requestBody
- admin OpenAPI, TS types, conformance cases, README and forms docs
