docs(bench): add run-2 results (B4h, B7, B12b, B14) and journal

.pi/journal.md

@@ -553,3 +553,27 @@ pull MidnightLib 1.10.0, jar also dropped in `mods/`). Gamescope integration app
 - Resume (stop the server first): `cd analysis/client-perf/harness &&
   python3 matrix.py run B4h,B7,B12b --param gc=J0` (20 sessions, ~3.5 h). Then B13
   (manual spark), B14 (manual spawn counts), ship, owner report.
+
+## Session 2026-10-18 — run 2 + B14 done; server back
+
+Overnight: 23:25 pause (owner) → 01:26 resume timer → matrix run 2 finished 03:18
+(B4h, B7, B12b; all sessions ok after retries) → B7.noshader re-run on default JVM →
+B14 defaults + shipped (33 rows each, biome_ok, config check ok) → server up 04:31.
+06:00 safety timer saw the server running and left it (its "not Done" warning was a
+scrolled-pane false alarm; readiness check now uses port 25565).
+
+Results (full tables in `analysis/client-perf/RESULTS-proxy.md` §Run 2):
+- B4h: smallest heap within spread = **5 GB** (4 GB loses S5) → PLAYER-TUNING note.
+- B7: shaders' big cost is S2 — Flywheel backends drop (974 → ~120 fps avg) for every
+  profile; MakeUp shadowless near-free elsewhere, Complementary ~2× on S4.
+- B12b: **Iris Flywheel Compat wins hugely under shaders** (S2 p99 13.3 → 4.0);
+  **Flerovium wins S3** (entities; B12b's S3 baseline anomalous, so confirm once).
+  Gnetum tie; BBE, Super Resolution, Ixeris (+1 crash), Cull Leaves rejected.
+- B14 (n=1): rule says back off, but driven by one goose/duck herd at the warm-ocean
+  site; sea bunny never spawned in either config → inconclusive, needs ≥3 runs/config.
+- Super Resolution's first launch rewrote bench `fml.toml` (`earlyWindowControl=false`,
+  unjournaled) → reset. Harness should snapshot/diff the whole config tree per session.
+
+Remaining: B6 missing-texture check → ship modernfix-mixins; add Iris Flywheel Compat +
+Flerovium (visual check, then `packwiz modrinth add`, then re-run B0); DH low-quality
+visual check; B13 spark; B14 ×3 more; ship via build.py; owner report.