daily-fix: guard_log_dump exempts code files from size heuri

kind: infra#wf-fix#wf-fix-fp:487270b89d93#daily-auto-filed

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Overview / Motivation

Auto-filed by /daily 2026-07-04 (route 2: behavior/logic change -> independent review), from the nightly transcript problem sweep.

Goal

Exempt code/doc extensions (.py/.md/.sh/.yaml) from the log-dump heuristic, or gate on the size of the REQUESTED RANGE rather than whole-file size, so bounded range reads of large source files pass.

Workflow gap

Bug observed: On 2026-07-04 (14:45 UTC) the guard_log_dump PreToolUse hook blocked #986's legitimate sed range read of scripts/workflow_lint.py - a source file classified as 'log-like' purely by whole-file size; a retry was blocked too and the agent had to work around with grep.
Why it is a workflow gap: the failure originates in the workflow surface / helper named below, not in any one experiment.
Confidence (emitter): medium

Scope / surfaces

Primary target: .claude/hooks/guard_log_dump.sh
Session: b5030d38 (#986).

Constraints / invariants

Workflow-surface only; scripts/workflow_lint.py --check-asks + --check-references stay green; ruff clean on touched files.

Provenance

workflow_fix_target: .claude/hooks/guard_log_dump.sh
source: /daily 2026-07-04 problem sweep (transcript-mined)

Activity