D209 - Table generators replay a committed recording

Status: decided Date: 2026-08-24

orbistoun-gen reaches the reference assembler through assembler::Source, which is either a live assembler or a replay of a committed recording. The check gate regenerates the committed tables from the replay and fails on any difference. A recording carries its inputs, keyed by probe text, and a run that produces nothing fails.

Why: the assembler build the solvers need is not available on most machines, and a generator runnable on one machine leaves nothing to catch a hand-edited table. Keying by call order hands every probe the same canned answer on replay. An empty table exiting zero deletes the reference output unnoticed.

Rejected:

• Live-only generation: nothing checks committed tables.
• A cache that decides its own staleness: a recording is a decision somebody made.
• Overwriting the annotated encoding table: its reasoning and citations are prose.