[Pavithran-R-A]

Stacked after PR #77 — compact public-repo live qualification

The earlier real Qwen run against MergeSutra's full root repository failed 11/17 verification gates: expensive repeated root tests, TypeScript exit 134 under 512MB container limit and worktree Git metadata outside the one allowed mount. Those are genuine, preserved failures; this does not waive any of those gates.

This change adds an explicit second fixture profile, backed by the public tiny repository, issue #1, and its independently reviewed oracle added by fixture PR #2.

• Manual workflow choice fixture_profile=compact|full (compact default), only for the credentialed live job. The credential-free preflight continues the original full-repo challenge.
• Compact checks use real GitHub issue, normal git clone/worktree, operator-bound AC-1..5 check node --test scripts/e2e-acceptance-check.mjs, standalone npm test, model edits confined to src/test/readme, hard independent behavior check, model review and candidate publication bundle.
• Full-repository profile remains unchanged and must still pass its own repository-required checks to earn a full PASS. A successful compact run is labeled a representative small-repository result, not evidence that the full-root case passed.
• The same 12-completion ceiling, zero retries, 25-minute driver deadline, pinned Docker, read-only GitHub permissions and no remote PR publication apply.
• Added tests that assert missing tests, changed independent oracle, added dependencies and profile conflation fail closed.

Do not rerun the failed live attempt. No new API/model requests were made for this PR.

Requires PR #77 merged and retargeting this stacked PR to main; then full hosted CI and customer gate before any new manual credentialed run.

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[linear-code]

PAV-173