A Submission Is Validated Whole and Travels Complete

Context

Transported requests must carry enough information to process independently of their producer.

Decision

Submission doors validate complete envelopes before writes, while processing validates content against the current definition or purpose.

Alternatives Considered

Partial queued submissions require later producer coordination and cannot be processed independently. Resolving recipients and templates at intake would couple the transaction to mutable delivery configuration.

Consequences

Envelope refusal leaves the repeat key unused. Processing refusal produces an inspectable invalid outcome when processing reaches its record write. Notifications bounds its payload; Communications transports a pointer to stored personal content.