Amendment per operator GO (ms-grill-me design round, 2026-08-20):
- Declaration is .mosaic/repo.json under integration_trunk, not a
byte-exact AGENTS.md line. Unknown/misspelled keys and unparsable
files are a structural hard stop; no prose grammar to near-miss
(Q15 answer, plan D3/D9).
- Changing an existing declaration is operator-owned, above ordinary
PR review (SF2, plan D10).
- Seeds this repo's declaration: integration_trunk next,
release_branch main — prevents the absent-declaration default from
rebinding the stack to main at land time.
- Gloss references in BOOTSTRAP/CODE-REVIEW/CI-CD-PIPELINES point at
repo.json; merge of origin/next restores pinned-image CI coverage
for this pre-pin branch (D27 caveat).
