TH08 fidelity: skip et_ex on spawn-end tick; Stage-1 hit 3205→3214

AGENTS.md

@@ -791,6 +791,46 @@ HP strip visible), stage-1 tally rows + night clock, bright nonspell
 reference, 夜盲 full circle, shrunk circle, still-dark bridge gap, and
 the Last Spell singing in the dark.
 
+### 2026-08-24 boss-presentation visual pass (headless-Chromium host; draw-only)
+
+Host note: this VM has NO wine and NO podman, but DOES have local headless
+Chromium (`/opt/pw-browsers`), so dev-shot/visual acceptance runs locally.
+Baseline re-run of committed main on this host: stage 1 EARLIEST DIVERGENCE
+f3192, stage 2 f3367 — the 2026-08-25 entry's "none observed" claim does
+NOT reproduce here; treat f3192/f3367 as the standing advisory numbers.
+
+Boss-fight fixes, each verified by frame-stepped browser captures of the
+full Wriggle and Mystia fights (probe: alternate held/released Z per
+30-frame batch — the dialogue machine confirms on held-bit RISING edges,
+so a continuously held Z never advances the pre-boss chat):
+
+1. **Effect-39 spell ring settle/tracking (the user-visible boss-fight
+ presentation break).** drawSpellRing parked the ring at a 240px
+ playfield-wide annulus at the DECLARATION-time boss position, at full
+ alpha, forever. The authored script's scale interp is 192→15 over the
+ 120-frame settle and its fade-in tops at alpha 192/255; at the measured
+ declaration-time ~600px screen radius (3.125 px/scale), the settled
+ radius is 46.875px — the ring shrinks ONTO the boss and spins there,
+ and the VM rides its owner (FUN_004152a0 arms it on the boss,
+ all.c:9110-9126) so the draw now follows the live boss position. The
+ bake path uses the same settled radius. Verified on 灯符 (familiars
+ arranged around the settled ring, native look), 蠢符, and Mystia's
+ 猛毒/鷹符/夜盲 cards.
+2. **?stage=2 test boot** (main.ts, test-only): direct probe boot of the
+ Stage-2 slice so the Mystia fight is reachable without chaining a
+ Stage-1 clear. snapshot.ts bulletDump cap raised 64→512 (probe
+ visibility into dense boss patterns).
+
+Non-defects confirmed this pass (do not re-chase): Wriggle N1's rice
+"wing" hugging the boss is the authored EX chain (0x40 decel 60-90f →
+turn -1.83rad → 0x10 accel [10023]≈0.045/f — frame-tracked working); the
+purple rounded-rect plate behind bosses is the authored enemy.anm boss
+aura; the vertical strips + kanji-card sprites above the player are the
+Border-Team homing-amulet family; the kanji item boxes (刻/点) are the
+authored etama2 item row. Mystia's card chain (声符 midboss → 猛毒 →
+鷹符 → 夜盲, finale quota-gated) and 夜盲's player-centred vision circle
+render native-faithful in the browser.
+
 ### 2026-08-24 draw-economy audit pass (port-side only; podman runner)
 
 A full static/exe audit of the standing stage-2 f677..1237 +8 u16 draw

src/game/eclvm.ts

@@ -197,8 +197,8 @@ export const TH08_RAW_OPCODE_COVERAGE = new Set<number>([
   96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108,
   109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120,
   121, 122, 123, 124, 126, 127, 128, 129, 130, 131, 132, 133,
-  134, 135, 139, 140, 144, 148, 153, 158, 160, 173, 174, 175,
-  176, 184
+  134, 135, 136, 139, 140, 142, 144, 145, 146, 148, 152, 153, 158, 160, 168,
+  173, 174, 175, 176, 184
 ]);
 
 // Th08.exe .rdata table @ VA 0x4b4ad8 (file offset 0xb44d8): 21 bullet
@@ -603,6 +603,7 @@ export class StageRuntime {
       // latter and only appears to improve survival by removing danmaku.
       hp: hasLife ? life | 0 : 1,
       maxHp: hasLife ? life | 0 : 1,
+      phaseHpCeiling: hasLife ? life | 0 : 1,
       pendingShotDmg: 0,
       pendingBombDmg: 0,
       // DAT_018b8a24 is 40 in the v1.00d Border-Team replay runtime; the
@@ -665,6 +666,7 @@ export class StageRuntime {
     e.ecl.itemDrop = item;
     if (hasScore) e.score = score | 0;
     e.maxHp = Math.max(1, e.hp);
+    e.phaseHpCeiling = e.maxHp;
     return e;
   }
 
@@ -1394,6 +1396,7 @@ export class StageRuntime {
       const t = s.lifeThresholds[i];
       if (t.threshold >= 0 && t.sub >= 0 && e.hp < t.threshold) {
         e.hp = t.threshold;
+        e.phaseHpCeiling = Math.max(1, t.threshold);
         t.threshold = -1;
         s.timerCallbackThreshold = -1; // exe: cleared on every life-cb fire
         s.timerCallbackSub = s.deathCallbackSub;
@@ -1408,7 +1411,11 @@ export class StageRuntime {
       for (let i = 0; i < 4; i++) {
         if (s.lifeThresholds[i].threshold > best) { best = s.lifeThresholds[i].threshold; bestIdx = i; }
       }
-      if (best > 0 && bestIdx >= 0) { e.hp = best; s.lifeThresholds[bestIdx].threshold = -1; }
+      if (best > 0 && bestIdx >= 0) {
+        e.hp = best;
+        e.phaseHpCeiling = Math.max(1, best);
+        s.lifeThresholds[bestIdx].threshold = -1;
+      }
       s.timerCallbackThreshold = -1;
       s.timerCallbackSub = s.deathCallbackSub;
       s.bossTimer = 0;
@@ -4104,6 +4111,7 @@ export class StageRuntime {
       case 131: { // set the bullet pool ("HP") + copies
         e.hp = gi(0);
         e.maxHp = Math.max(1, e.hp);
+        e.phaseHpCeiling = e.maxHp;
         t.poolCopyA = e.hp;
         t.poolCopyB = e.hp;
         return null;

src/game/snapshot.ts

@@ -125,7 +125,7 @@ export function stageSnapshot(scene: StageScene): Record<string, unknown> {
       }
       return h;
     }, {}),
-    bulletDump: scene.enemyBullets.slice(0, 64).map((b) => ({
+    bulletDump: scene.enemyBullets.slice(0, 512).map((b) => ({
       id: b.id,
       x: Math.round(b.x),
       y: Math.round(b.y),