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Commits on Aug 29, 2026

  1. Write up content-accessor-guards refinement note for morning review 

    Investigated whether the '*'-traversal/GROUP-mode content-accessor
rejection (FILES) was safe to convert to the deferred
ambiguous_content_read pattern the same way this session's other three
field-accessor fixes were, without a check-in first, since none of them
needed to.

It is not a safe blind conversion: the existing ambiguous_content_read
flag is a naive count check that does not know whether candidates were
already individually reduced one-per-partition (legitimate, per this
bucket-list item's own CSVPATHS precedent) versus genuinely unreduced
and sharing one accessor (a real Rule 1 violation). Field accessors
never trip this flag at all, which is why narrowing to field-accessors-
only was safe without touching it. Making :manifest() safe here too
needs the flag itself to become partition-aware first.

Documented the exact fix direction, likely affected call sites
(RESULTS' own equivalent GROUP-mode check, possibly its literal-root
match_all check), and the scope decision needed before building
(FILES-only vs. also RESULTS/CSVPATHS in one pass) -- no code changed.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013gPjejPWvbWtjz2dw9h14M
    David Kershaw @claude
    David Kershaw and claude committed Aug 29, 2026
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