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feat(skill): scope/deps/idempotency block + shipped eval suite (schliff field study)#34

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Zandereins merged 1 commit into
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field/schliff-eval-hardening
Jul 3, 2026
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feat(skill): scope/deps/idempotency block + shipped eval suite (schliff field study)#34
Zandereins merged 1 commit into
mainfrom
field/schliff-eval-hardening

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First schliff field case study on a real production skill. Baseline with the released schliff 8.4.0: 71.0/C (7 dims, eval suite) — the tool's own priorities were edges (3/5 edge-case categories), composability (missing positive scope, dependency decl, idempotency statement), and the token budget.

Applied (purely additive — zero operational content touched):

  • Eval suite now ships in-repo, extended with 2 edge cases that pin real, documented behaviors: the state.json tamper guard (malformed_input) and windowed review on huge diffs (scale_extreme) → edges 82→100
  • Scope block ("Use this skill when / Do not use"), dependency declaration (bash/git, Codex CLI for deep mode, gtimeout), idempotency guarantee → composability 56→81

Result: 71.0/C → 76.5/B.

Deliberately NOT done (informed decline): compressing the 14k-token SKILL.md — the inline bash is Hydra's operational core, and extraction to references/ would trade correctness risk for a score. Also: schliff's dead-marker detector false-positived on the word "placeholder" in Hydra's template-hygiene prose — filed as a schliff bug, no change here.

🤖 Generated with Claude Code

…ff field study)

Measured with schliff 8.4.0 (eval suite included): 71.0/C -> 76.5/B.
- edges 82 -> 100: eval suite now ships IN the repo with 5 edge cases;
  the two new ones pin REAL documented behaviors (state.json tamper
  guard = malformed_input, windowed review on huge diffs = scale_extreme)
- composability 56 -> 81: explicit positive+negative scope, dependency
  declaration (bash/git, Codex CLI for deep mode, gtimeout), and the
  idempotency guarantee (timestamped reports, never mutates reviewed code)
All changes are purely additive prose/eval data — no operational
instruction or bash block was touched.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@Zandereins Zandereins merged commit 6c58a06 into main Jul 3, 2026
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@Zandereins Zandereins deleted the field/schliff-eval-hardening branch July 3, 2026 14:31
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