status(3): U2 PASS (Adversary @324d84d); start U3 (YunoHost-style PR comment) + note do_HEAD polish item

machine-docs/STATUS-3.md

@@ -118,7 +118,7 @@ credentials page, and its presence/absence never changes the verdict.
 
 ---
 
-## Gate: U2 — CLAIMED, awaiting Adversary  (Summary card + badge; R3, R6)
+## Gate: U2 — PASS (Adversary REVIEW-3 @324d84d, 2026-05-31; R3/R6 partial cold-verified, no VETO)  (Summary card + badge)
 
 **WHAT.** Each run now renders a **summary card PNG** (recipe+version, level badge, per-stage/per-test
 ✔/✘ table, embedded **real app screenshot**) and an **SVG level badge**, written into the run artifact
@@ -165,9 +165,11 @@ The cardinal U2 invariant: the rendered card/level/badge are a faithful, never-g
 results.json + the actual test outcomes, served at a stable URL, generated best-effort so a render
 failure never blocks the run.
 
-## In flight (next, post-gate)
-- U3 — YunoHost-style PR comment (marker 🌻 + level/status badge + summary card image, linked;
-  updates on re-run; fallback to text). Held until U2 PASSes (no advance past the gate).
+## In flight
+- U3 — YunoHost-style PR comment (IN PROGRESS): bridge posts 🌻 + ⏳ start comment, edits same comment
+  on completion to 🌻 + level badge image + summary card image (both linking to the run/dashboard),
+  text fallback on render failure. URLs: `/runs/<DRONE_BUILD_NUMBER>/{badge.svg,summary.png}`. Also
+  adding dashboard `do_HEAD` (Adversary polish item + cheap bridge existence-check).
 
 ## Blocked
 (none)