Docs: record the three feedback rounds, decisions, and verification gotchas

PLAN.md: two-stage aiming, runner-glass, fps-60, and no-engine decisions added
to the don't-re-litigate list; PWA/App Store noted as a next-arc candidate.
HANDOFF.md: status covers the post-plan rounds; gotchas gain the synthetic-touch,
1/60-stepping, port-hold, and zombies[]-mutation lessons.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

PLAN.md

@@ -1,8 +1,10 @@
-# PLAN — all phases shipped (v2 complete, 2026-07-12)
+# PLAN — all phases shipped (v2 complete + three feedback rounds, 2026-07-12)
 
-Phases 1–13 are implemented, verified, and deployed. See git log for the per-phase
-record and HANDOFF.md for the current system map. This file now only records what
-was DECIDED, so nobody re-litigates it.
+Phases 1–13 are implemented, verified, and deployed, plus three post-plan feedback
+rounds from Oliver's phone playtests (aiming rework, freeze fix + presentation,
+aesthetics/stadium, runner + battery). See git log for the per-round record and
+HANDOFF.md for the current system map. This file now only records what was DECIDED,
+so nobody re-litigates it.
 
 ## The shape of the game (as shipped)
 - **The scoreboard is the progression.** Waves = games (spawn director scales with
@@ -23,11 +25,22 @@ was DECIDED, so nobody re-litigates it.
   eatenR 0.9 sprite-overlap = eaten.
 
 ## Feedback-round decisions (Oliver, 2026-07-12)
-- Zombies pass-through: resolved as (a) — touch HURTS (radius honest), not avoidance.
+- Zombies pass-through: resolved as (a) — touch HURTS (eatenR honest), not avoidance.
 - Interlude frequency: currently every game won (fresh opponent each game). If it
   overstays its welcome, gate it to every 2nd opponent — one-line change in the
   trigger (gameplay.js, `dueled`).
 - Multi-ball stays "one proper serve per fan" (triple serve), never rapid-fire.
+- Serve aiming is TWO-STAGE: touch shows the reticle at once (auto-lock on the most
+  advanced zombie), drag aims, release fires, drag-back cancels. A flick is just a
+  fast drag now. Specials commit only on aimed serves; tap-toss keeps the stock and
+  the PERFECT power ceiling. Do not regress to blind flicks.
+- Runner counter: GLASS CANNON (any ball contact kills it) + runnerVMax cap — NOT a
+  dedicated weapon (you'd never hold it when the shriek comes).
+- fps default 60 — Oliver felt 30 immediately and vetoed it. The TUNE.fps knob stays
+  as an opt-in battery saver. Battery wins that DID stick: cached pile canvases,
+  matchMedia hoist, RAF rescheduled before update (also the freeze insurance).
+- Engine port ruled out (third failed-rewrite risk; feel is the asset). If rendering
+  ever truly outgrows canvas 2D, swap ONLY render.js for a WebGL backend.
 
 ## Tuning surface (T panel)
 All pacing knobs are in config.js TUNE — spawn director (zSpawnEvery/Min/Step, zMax,
@@ -36,5 +49,9 @@ zMaxCap), beats (changeoverT, gameBeatT), deliveries (ballChangeFirst/Every), ro
 
 ## If a next arc happens, candidates in rough order of value
 1. Balance pass from phone playtests (Oliver tunes, nothing to build).
-2. Boss variety: a second duel opponent type (sprite session first, as before).
-3. Meta between runs: unlock/records screen beyond best-run.
+2. PWA (manifest + icon + service worker, ~an afternoon) — full-screen home-screen
+   app, offline, keeps the instant deploy loop. Oliver is also interested in SELLING
+   it at 0.99 someday → that path is Capacitor + App Store (dev account €99/yr,
+   Apple as merchant of record); informational only so far, do not build unasked.
+3. Boss variety: a second duel opponent type (sprite session first, as before).
+4. Meta between runs: unlock/records screen beyond best-run.