feat(pair-corpus-honesty): LLM-generated Real-Vuln repos and unlicensed agent fixes as pointer pairs

Task 8.4 (Req 10.6, 5.1).

- harvest.merge_recipes appends recipes by name and never rewrites
  existing rows.
- vibe-py/build_recipes.py --pointers: the 40 LLM-generated repositories
  without a license become vendored = false rows (80 pairs, agent,
  seeded) appended to recipes.toml; unlicensed human repos stay skipped.
- agent-vfc/build_recipes.py --from ... --pointers [--cache]: unlicensed
  agent-authored fixes become title-tier pointer rows whose function
  label is derived from the cached excerpt (30 added from a fresh
  662-candidate search); TOML booleans rendered correctly.
- catalogs regenerated: vibe-py 115 rows (35 vendored + 80 pointer),
  agent-vfc 59 (29 + 30); no excerpt is vendored for any pointer row.
- `pairs --slice vibe-py --pointers` scores both provenances (human 35,
  agent 80); the default run skips 80 pairs with pointer_pair_skipped;
  suite and gates unchanged. README/docs name the nightly command.

Co-Authored-By: Claude Fable 5.1 <[email protected]>
Claude-Session: https://claude.ai/code/session_01T7XD7x5KonMdmGRkp63EQG

.kiro/specs/pair-corpus-honesty/tasks.md

@@ -199,6 +199,7 @@
 - Task 8.3 (2026-09-05, RED first: 6 failing tests captured — `pointer_recipe`/`select_vendored` missing, loader `KeyError: 'vuln'` on a `vendored = false` row (x2), `pairs --pointers` unknown flag (`SystemExit: 2`), `validate_recipe(require_license=)` unknown, `catalog_gen` skipped pointer recipes as missing excerpts; then green): `PairCase.vendored`/`recipe`, `pair_cache_dir` (`OPENULTRASAST_PAIR_CACHE`, default `~/.cache/openultrasast/pairs`), `network_allowed` (`--pointers` per run or `OPENULTRASAST_PAIRS_NETWORK=1`), `select_vendored`, `_pointer_ready` (cached -> score; network -> `harvest.materialize_pointer` via the shared library; else `pointer_pair_skipped`; a failed fetch is `pointer_pair_fetch_failed`), `evaluate_catalog(pointers=)`; `harvest.validate_recipe(require_license=False)` and `materialize_pointer` (cache only, redaction applies); `catalog_gen` emits `vendored = false` rows with recipe fields and no excerpts, training manifest skips them; `pair_gate` scores vendored local pairs only; `.gitignore` covers the cache path. Smoke with real network on two Real-Vuln LLM-repo recipes into a scratchpad cache: network off -> 0 outcomes, 2 x `pointer_pair_skipped`; network on -> both harvested to `<cache>/vibe-py/<name>/{vuln,fixed}.py` and scored (silent fix on both, vuln side undetected, unresolved 0); nothing written under the repository. Suite 479 passed / 4 skipped, extra-free 466 / 17, ruff/mypy clean, three gates PASS.
 - Review round 9 (2026-09-05) REJECTED 8.3 on two findings, both fixed RED-first (2 failing tests captured: warm cache + network off scored the pointer pair; `evaluate_profiles` kept an `agent` pointer pair): `_pointer_ready` consults `network_allowed` before the cache, so a warm cache only spares the fetch under `--pointers`/env and never turns a default run into a pointer run; `evolve.evaluate_profiles` applies `select_vendored` before the tier filter (design amendment: "tests and gates call `select_vendored`"; ProfileGate is the gate the design names, so the one-line filter is in boundary). Suggestions applied: fetch failures carry a `detail`; the harvest module load is memoized; pointer excerpt headers get `function`/`mechanism` from the expected row; `tests/conftest.py` autouse fixture clears `OPENULTRASAST_PAIRS_NETWORK` and points the cache at a temp dir for every test; full-catalog on-disk assertions use `select_vendored`.
 - Review round 10 (2026-09-05) APPROVED 8.3 (verify-completion: `pytest -q` 481 passed / 4 skipped; extra-free 468 / 17 inside a no-network namespace; ruff/format/mypy clean; three gates PASS; reviewer reproduced both RED tests by mutation, the warm-cache/network-off skip on the real cache, and that the default run creates no cache and touches no network). Non-blocking: top-level README/docs mention `--pointers` only in benchmarks/pairs/README.md (ride with 8.4); the cwd-relative harvest library path follows the DEFAULT_CATALOG convention.
+- Task 8.4 (2026-09-05, RED first: 4 failing tests captured — `build(pointers=)` unknown in the vibe-py builder, `merge_recipes` missing from the harvest library, the agent-vfc writer rendered booleans as strings, no pointer rows in the default catalog; then green): `harvest.merge_recipes` appends new recipes by name and never rewrites existing rows; `vibe-py/build_recipes.py --pointers` keeps the LLM-generated unlicensed repositories as `vendored = false`, `agent`, `review_tier = "seeded"` rows and appends them to recipes.toml (80 pairs over the 40 repositories; the 36 pre-existing recipes are byte-for-byte identical after reload; unlicensed human repositories stay skipped); `agent-vfc/build_recipes.py --from ... --pointers [--cache]` inverts the license rule, harvests each unlicensed candidate into the cache to derive its function label with `catalog_gen.derive_function`, dedupes against known commits/repos, and appends `title` pointer rows (30 added from a fresh 662-candidate search; 2 candidates failed to harvest, 10 had no named function; the 39 pre-existing recipes are identical). Catalogs regenerated: vibe-py 115 rows (35 vendored + 80 pointer), agent-vfc 59 rows (29 vendored + 30 pointer); training manifests unchanged (pointer rows carry no vendored files). Evidence for the observable, cache in the scratchpad: `pairs --slice vibe-py --pointers --json` scored 115 pairs, per_profile human 35 (13 correct, Youden +0.371) and agent 80 (0 correct, Youden 0.000; the LLM-repo baseline), all 80 pointer pairs fetched, no fetch failure; `pairs --slice agent-vfc --pointers --json` 1/59, Youden 0.000, unresolved 2; the default `pairs --slice vibe-py --json` scores 35 pairs and records 80 `pointer_pair_skipped`; `~/.cache/openultrasast` was never created. README/docs name the nightly `--pointers` command. Suite and gates unchanged (see round 11).
 - ESCALATION (task 5.1 observable): vibe-py has `human` provenance only because the 40 LLM-generated Real-Vuln repos have no license (Req 5.4 wins). Spec owner decision needed: accept human-only vibe-py, or obtain a license statement upstream.
 - ESCALATION (Req 5.3): agent-vfc rows are unreviewed. They are NOT in the loaded catalog; `benchmarks/pairs/agent-vfc/catalog-candidates.toml` and `REVIEW.md` list them for a human reviewer. Task 5.3 stays open until reviewed.