orc v0.2.0

Changelog

• 23ace72: Merge pull request #10 from jorge-barreto/eval-redesign (@jorge-barreto)
• c2b3609: dispatch: pass ORC_EVAL/ORC_SPEC_FILE through BuildEnv to phases (B1) (@jorge-barreto)
• 21377cd: docs: design spec for orc eval redesign (held-out grader, separable grading) (@jorge-barreto)
• 0e4da6c: docs: document eval held-out grader, ORC_SPEC_FILE, --regrade, two fingerprints (@jorge-barreto)
• f71f170: docs: implementation plan for orc eval redesign (@jorge-barreto)
• 6e89d5f: docs: make ORC_SPEC_FILE seam concrete in eval redesign spec (@jorge-barreto)
• 5c58c2b: docs: reflect eval redesign in README and CLAUDE.md (@jorge-barreto)
• e890211: docs: resolve backward-compat and opt-in open questions in eval spec (@jorge-barreto)
• 5e6302f: eval: add --regrade to re-score a saved run without re-running (@jorge-barreto)
• 52be36b: eval: add BuildStage — clean, grader-free curation commit (@jorge-barreto)
• 9f90012: eval: add required spec field to fixture (@jorge-barreto)
• 135db5c: eval: clean up partial copy on persistRunArtifacts failure (@jorge-barreto)
• 7fc06c2: eval: grader checks see fixture vars; resolve from project root (@jorge-barreto)
• 85208ed: eval: persist runs for --regrade, fix var asymmetry, guard run-id and vars (B2/B3/B4/W3/W4) (@jorge-barreto)
• 134280d: eval: runCase uses BuildStage; set ORC_EVAL/ORC_SPEC_FILE contract (@jorge-barreto)
• 80139a2: eval: skip git hooks on the curation commit (W1) (@jorge-barreto)
• 34cbb3c: eval: track rubric fingerprint per case in history + report (@jorge-barreto)
• bbf7364: eval: validate --regrade run-id, exit-code 3 on setup errors, reject flag combos (B3/W2) (@jorge-barreto)
• 9501a38: state: export CopyTree recursive-copy helper (B2) (@jorge-barreto)