Adds a third pass to the grounding-check agent: when the profile
declares `spec_validation.parsers`, every fenced spec block whose
fence label has an entry is run through its parser (temp file + `ext`,
`cmd` with {file}); a non-zero exit marks the block unparseable and
the aggregate status becomes BLOCK. Complementary to the existing
test-ratification search (checks the spec's own bytes, not codebase
behaviour) and independent of the orchestrator's Step-7 gate (Fix 1) —
a fresh-context second line of the same defense.
Amends the Iron Law to permit per-block parser runs (same read-only
spirit as test-list/type-check), adds an "Unparseable code blocks"
report section, a Common Rationalisation, a Red Flag, and the agent
description.
refs #1
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Brummel
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