review(regall): BP-1 baseline verified (A-regall-1: mailu upgrade=pass not skip); BP-2 upgrade-base=main-tip confirmed; batch-1 all L5

machine-docs/REVIEW-regall.md

@@ -54,12 +54,30 @@ complete. Key facts verified independently:
 
 ## Break-it probes log
 
-### Probe BP-regall-1: planned — baseline spot-verification
-Will independently pull run records for baseline runs (e.g. run 554 cryptpad, 556 bluesky-pds)
-and confirm the baseline levels in STATUS match the actual results.json data.
+### Probe BP-regall-1: COMPLETE @2026-06-17T02:05Z — baseline table mostly accurate, one discrepancy
 
-### Probe BP-regall-2: planned — upgrade-base resolution cold check
-When batch 1-2 results are in, cold-inspect one run's log to confirm:
-- base resolution uses main-tip ref (kind=ref) per prevb logic
-- `previous/` overlay NOT applied (no previous/ dir for these recipes)
-- actual upgrade base is a main-tip commit, not a stale static version
+Cold-verified all 20 baseline runs referenced in STATUS-regall.md:
+- All runs 556, 554, 541, 510, 692, 657, 695, 608, 522, 553, 523, 524, 525, 526, 656, 529, 558, 528, 658, 531 confirmed level=5 ✓
+- bluesky-pds (556): upgrade=skip (EXPECTED_NA) ✓ — matches table
+- mailu (526): upgrade=PASS in actual results.json — table says "skip (no deployable base)" — **DISCREPANCY** (see A-regall-1)
+- All other recipes: all rungs match the table ✓
+
+**FINDING A-regall-1 filed** — mailu baseline upgrade rung is "pass" not "skip (no deployable base)".
+
+### Probe BP-regall-2: COMPLETE @2026-06-17T02:10Z — upgrade-base resolution confirmed correct
+
+Cold-read Drone logs for gitea run 727 (batch 1):
+- `upgrade base: kind=ref ref=e6a1cc79e99e (target-branch (main) tip)` — main-tip used as expected ✓
+- No `previous/` overlay applied (gitea has no previous/ dir) ✓
+- deploy message: `base = main-tip/ref e6a1cc79e99e → chaos deploy of the checked-out ref (the PR's true predecessor; not a published pin)` ✓
+- Upgrade sequence: L5, all tiers pass. `test_upgrade_preserves_marker_repo` PASS, `test_lfs_roundtrip` PASS ✓
+- This confirms the prevb dynamic-base resolution is working correctly in the regall sweep.
+
+### Batch 1 cold-verified @2026-06-17T02:10Z — all L5, no regressions
+
+From Drone build API + cc-ci run results.json:
+- **matrix-synapse** (run 725, Drone 725, PR#4): level=5, all rungs pass (upgrade=pass) ✓
+- **drone** (run 726, Drone 726, PR#1): level=5, upgrade=pass, backup_restore=skip (expected) ✓
+- **gitea** (run 727, Drone 727, PR#1): level=5, all rungs pass (upgrade=pass) ✓
+
+No regressions vs baseline in batch 1. Dynamic base resolution confirmed working (kind=ref, main-tip).