QA: "the sfx is too loud and scratchy." Drop-in asset swap — no engine change.
Replace the 9 synthesized cues (swap, match, combo1..combo5, win, lose) with
real free-licensed (CC0 1.0) sound effects from Kenney's Interface Sounds /
Digital Audio packs:
swap <- pluck_002 match <- confirmation_002
win <- powerUp7 lose <- minimize_006
combo1..5 <- glass_001 pitch-laddered up a pentatonic run (0,+2,+4,+7,+9 st)
via resample DSP -> ascending fundamentals 1918..3226 Hz.
Every cue: mono / 44100 Hz / Int16 PCM, <=0.54 s. Whole bank peak-normalized to
-9 dBFS, so peak AND RMS are well below the old synth (old peak -0.7..-2.9 dB,
mean -5.8..-9.3 dB; new peak -9.0 dB, mean -22..-30 dB). Audibly cleaner — no
synth harmonics.
LICENSE.txt rewritten with real per-file provenance (source URL + CC0). clear.wav
(already a CC0 Kenney clip, not loaded by the engine) left unchanged. Engine
(audio.sx/board_view.sx/main.sx) untouched; sim build loads all 9 cues, zero
"load failed".
Retune the GPU clear colour on both render paths (Metal on iOS, GL on
desktop) from the old dark navy (0.05,0.06,0.10) to a candy-lavender tone
sampled from the regenerated background's mid-gradient. The dark navy was
the one off-palette constant left after P12.1/P12.2; the background art
covers the full drawable in steady state, so it only ever surfaced as a
pre-load flash / potential dark seam. A single shared CLEAR_R/G/B keeps the
two paths from diverging.
Refresh the stale full-board goldens (p4_board, p9_polish), which still
showed the pre-P12.2 dark HUD, to the current cohesive candy palette.
Restyle the code-drawn UI toward the candy look — colours, corner-rounding
and glossy feel only; no rect geometry moves.
- HUD: grape candy card with a glossy top sheen, a bright rounded rim and
warm cream text on a soft purple shadow (was a flat dark translucent panel).
- Banner panel: grape candy fill under a sheen + bright rim, rounder corners.
- Titles: celebratory candy gold YOU WIN! / punchy coral OUT OF MOVES, each
on a tinted drop shadow for pop.
- PLAY AGAIN: bubblegum candy button with a glossy sheen, bright rim and a
darker bevel lip for a 3D candy edge.
BannerLayout rects (panel/title/button) and the restart hit-test are
untouched, so tests/banner_layout still passes. Refresh the p4_hud / p7_win /
p7_lose goldens.
Regenerate the board art in a Candy-Crush palette via real image
generation (codex imagegen tool), keeping each PNG's exact dims and
source format so no code/layout changes are needed:
- background.png: 863x1822 opaque RGB — bright bubblegum-pink ->
lavender -> sky-blue candy gradient with soft bokeh sparkles
(was the dark purple/indigo/teal gradient).
- cell.png: 128x128 RGBA — light glossy frosted candy tile with a
warm pink/lavender tint, keeping it light so the 6 gems stay legible.
Generated at imagegen-native sizes, then center-cropped (background, to
preserve aspect) and resized with sips to the exact target dims/format.
Refresh the resting-board goldens (p9_polish, p4_board) captured at
M3TE_ANIM_TIME=0 to show the new palette with all 6 gems legible.
Make the selection highlight read as glossy candy without new art and
without disturbing the idle-rest invariant. board_view's render_selection
layers a soft outward glow (two concentric stroked rings — the renderer has
no blur), a warm wash, a bright rim doubled by a thin inner highlight for a
glassy edge, and a wet sheen that rides the selected gem's live pose. Every
layer is a rect/overlay (issue 0002 forbids a draw-time gem-texture tint).
The gloss is selection-only: render_selection runs solely when a cell is
selected, so the resting board (no selection) is byte-identical to before
and the t==0 idle pose stays exactly the static sprite (locked by
tests/gem_pose). The selection-pop motion still comes from gem_anim; no
board / score / move state changes and input stays gated by BoardAnim.active.
Updated goldens/p6_select.png; README documents the P11.3 selection gloss
and its reproduce commands (reusing the P6.3 M3TE_SELECT + M3TE_ANIM_TIME
hooks).
Scale the combo FX with cascade depth (mv.rounds.len) — the same depth the
cascade SFX (play_cascade) steps up on — so deeper cascades read as more
exciting and land in lockstep with the audio escalation. Purely visual and
self-pruning: no board / score / move state changes, and input stays gated by
BoardAnim.active alone.
- board_fx.sx: add fx_combo_level (mirrors audio's cascade_cue_index clamp:
depth<=1 -> floor, depth>=5 -> ceiling). The +points popup now carries the
cascade depth and grows one font step + lerps gold -> hot-gold per level
(fx_popup_font / fx_popup_color). Every burst of a deep cascade gets a
whole-move depth boost (FX_BURST_DEPTH) on top of the existing per-round bump.
- board_view.sx: render_fx_popups derives styling from depth and tops a combo
with a "COMBO xN" label naming the true cascade depth.
- tests/fx_combo.sx: headless snapshot locking the depth->level/font table and
asserting fx_combo_level matches the cascade-cue index column entry-for-entry.
- goldens/p11_combo_deep.png + README: deterministic depth-5 capture (M3TE_FX=11)
vs the depth-1 single clear (M3TE_FX=3); FX gone after settle at a later phase.
Visual-juice vibe-pass, FX-only — no logic/state changes, input gating
still owned by BoardAnim.active.
- board_fx.sx: bigger, punchier match bursts — peak size 1.95->2.50 cells,
combo bonus 0.55->0.72, and the per-gem fx tints saturated a touch (low
channel trimmed, dominant/mid lifted) so every burst pops as a brighter,
more vivid candy colour. The hot per-pixel tint loop's hoisted locals are
preserved (issue 0001).
- gem_anim.sx: snappier clear pop — faster rise (0.30->0.18 of the window)
to a bigger overshoot (CLEAR_POP_A 0.22->0.34) so the matched-gem clear
reads as a candy snap. gem_pose's clear-pop invariants still hold.
- main.sx: M3TE_FX=<n> deterministic match-FX capture hook, mirroring the
M3TE_SELECT pattern. Commits the n-th currently-legal swap at startup via
the normal plan_and_commit path and begins the move timeline + burst/popup
FX; M3TE_ANIM_TIME pins the phase and the frame loop holds the move/FX
frozen while pinned, so the burst + "+points" screenshot identically every
run. A larger M3TE_ANIM_TIME captures the settled, FX-gone board. Startup-
only and guarded, so normal play is untouched.
- README.md: document the new M3TE_FX pin alongside the other capture hooks.
- goldens/p6_fx_match.png: updated deterministic golden (iOS 26 sim,
SIMCTL_CHILD_M3TE_FX=3 SIMCTL_CHILD_M3TE_ANIM_TIME=0.22) — the vertical
red 3-match, burst region +1.4% mean luminance / 3.2:1 brighter:dimmer vs
the same scene on the pre-juice constants.
Gate: ios-sim build links, 19/19 logic tests green (incl. gem_pose t=0 rest).
Add tests/cascade_cue.sx, a headless logic test that reuses audio.sx's
pure cascade_cue_index / cascade_cue_name (the exact functions
play_cascade calls) to lock the cascade-depth -> combo-cue clamp:
depth <= 1 -> combo1, depth >= COMBO_CLIPS -> combo5, monotonic between.
Covers the escalation logic the audio playback path can't gate-cover,
with no audio. Committed stdout/exit snapshot; suite is now 19 tests.
Drive event-appropriate cues from the existing System Sound Services bank,
purely additively — no board/score/move state is read or written and every
call stays inline-if-OS==.ios guarded.
board_view.sx (move-commit path): a committed gesture now plays the swap
slide cue for any swipe intent (legal or the reverted ping-back); a legal
move adds the match pop on its first clearing round; a multi-round chain
adds the escalating cascade cue keyed to the recorded AnimMove depth
(mv.rounds.len), kept distinct from the match pop so a single clear is never
doubled. An illegal swap plays only the swap cue.
main.sx (frame loop): the win/lose stinger fires EXACTLY ONCE, edge-triggered
on the frame the banner comes up — the level has settled won/lost and any
in-flight cascade has finished animating. Status is read-only from the model;
a restart re-arms the edge for a fresh win/lose.
audio.sx: each play_* method logs a per-cue NSLog line at play time so the
ordering is observable via `log show`; cascade_cue_name maps the clamped
combo index to a stable literal (literals only — the string→NSString bridge
needs NUL-terminated bytes).
Refactor GameAudio from the single clear cue into a full bank: load swap,
match, combo1..combo5, win, lose once at startup, each into its own
SystemSoundID via load_system_sound. Expose per-event play methods
(play_swap/play_match/play_cascade/play_win/play_lose), each a single
AudioServicesPlaySystemSound. play_cascade selects the ascending clip by
clamping cascade depth through the pure, OS-agnostic cascade_cue_index
(depth<=1 -> combo1, depth>=5 -> combo5) so P10.4 can snapshot it headlessly.
Layer stays purely additive and inline-if-OS==.ios guarded; the clear trigger
is migrated to sfx_cascade(mv.rounds.len) at its board_view call site, with
sfx_swap/match/win/lose shims staged for P10.3 wiring. No framework added
beyond the already-linked AudioToolbox/CoreFoundation (build.sx untouched).
Produce the first deliverable of the Candy-Crush vibe pass: a bank of bright,
glossy, higher-pitched SFX WAVs under assets/audio/, all in the exact canonical
iOS System-Sound format clear.wav uses (mono, 44100 Hz, signed-16-bit PCM).
Bank: swap, match, combo1..combo5 (ascending pentatonic run C6 D6 E6 G6 A6),
win (ascending arpeggio), lose (descending stinger). Every cue sits above
clear.wav's ~784 Hz fundamental; combo1<..<combo5 step strictly upward
(1047<1175<1319<1568<1760 Hz). Each loads via AudioServicesCreateSystemSoundID
with status 0.
Synthesized by the build-time tools/synth_audio.py (pure-Python additive
synthesis; the app never runs it) and converted with afconvert. Pitch verified
with tools/measure_pitch.py. Provenance (CC0) recorded in LICENSE.txt. No sx
code changes — engine wiring is P10.2/P10.3.
Polish pass before final acceptance. The 8x8 grid was rendering flush to the
left/right screen edges (gems ~4pt from the bezel on iPhone 17). Add a content
margin (BOARD_INSET_X = 16pt) layered on top of the platform safe-area insets so
the grid is framed by the background, while the HUD keeps using the bare safe
insets so it still hugs the top below the Dynamic Island. The grid is
width-constrained in portrait, so this inset is what sizes it; vertical
centering inside the safe area is unchanged, and the win/lose banner (derived
from the grid) stays centered over the framed board.
Safe-area verified on a current iPhone simulator (iPhone 17, iOS 26): HUD below
the Dynamic Island, board far above the home indicator, forced win/lose banners
centered and unclipped.
The headless geometry tests (hit_test, banner_layout) call compute() with a
zero inset directly, so they are unaffected; full logic gate stays green (18/18).
Goldens: add p9_polish.png (resting board, M3TE_ANIM_TIME=0) as the canonical
polished layout. Re-capture the README-documented deterministic goldens whose
board position shifts by the 16pt margin (p4_board, p4_hud, p6_idle_t0,
p6_idle_mid, p6_select, p7_win, p7_lose, p7_restart). The in-flight move-timeline
goldens (p5_swap_*, p6_anim_*, p6_fx_*, p6_inputlock_board) and the p0 quad
goldens are not reproducible via the documented env pins (which pin only the idle
clock + level state), so they are left as-is.
Feasibility spike outcome: iOS audio from sx is feasible with no sx-library
change. System Sound Services is plain C, reached with the same `#foreign`
FFI uikit.sx already uses (UIApplicationMain / dlsym / CACurrentMediaTime);
AudioToolbox + CoreFoundation are linked per-target in build.sx.
Smallest viable SFX: one short CC0 clip (Kenney Interface Sounds, CC0 1.0)
played when a swap clears a match. Purely additive — audio.sx reads/writes
no score/board/move state; the wiring in board_view only adds a call.
- audio.sx: load clear.wav once, AudioServicesPlaySystemSound on clear
- board_view.sx: trigger sfx_clear() on a legal swap that clears (>=1 round)
- main.sx: allocate + init g_audio at boot
- build.sx: link AudioToolbox + CoreFoundation on iOS
- assets/audio/clear.wav (+ one-line CC0 credit in LICENSE.txt)
Verified: ios-sim build links; 18/18 tests pass; sim boot log shows
"[sx] audio: clear cue loaded" (AudioServicesCreateSystemSoundID succeeded,
asset shipped in the bundle and decoded).
The restart button (BoardView.do_restart) reseeded the model and dropped
selection/drag/anim/FX, but left GemMotion.land_at carrying the prior move's
landing stamps. A restart fired right after a terminal cascade therefore
replayed that move's squash-bounce on the freshly seeded board instead of
showing a clean resting pose.
Factor the landing reset into GemMotion.reset_landings (init now delegates to
it) and call it from do_restart, so a restart returns every cell to its
resting idle pose. The idle clock keeps running, so the always-on idle simply
resumes from rest.
Regression: tests/gem_pose.sx section 7 stamps a cell mid-squash, asserts it
is squashing, then asserts reset_landings returns every cell to rest while
leaving the clock untouched. Fails on the pre-fix (no-op reset) behaviour,
passes after. Gate green: ios-sim build + 18/18 logic tests.
Extend the HUD to show the per-level goal (SCORE x / target) alongside
moves. When the model's level_status (P7.1) is won/lost, draw a centered
overlay banner ("YOU WIN!" / "OUT OF MOVES") with a "PLAY AGAIN" restart
button over the dimmed board; the banner appears once any winning/losing
cascade animation settles. Status is read from the model, never recomputed
in the view.
A finished level freezes board-cell input; only the restart button is live.
Its rect is derived from the shared BoardLayout grid (new BannerLayout), so
the hit-test lands exactly on the drawn button. A tap reseeds the same
starting level through board.restart and clears the transient view layers,
returning to a clean in_progress board.
Banner is text + rects only (honours colour/alpha; no draw-time image tint,
issue 0002). New env capture hooks (M3TE_TARGET / M3TE_MOVE_LIMIT /
M3TE_RESTART) force a terminal status / restart for deterministic goldens.
Tests: tests/banner_layout.sx locks the restart button rect <-> hit-test
round-trip headlessly. Goldens p7_win / p7_lose / p7_restart captured on the
iOS simulator.
play_turn now checks level_status before committing: a won or lost
level rejects the swap (accepted=false) with no move spent and no
score change, until restart returns it to in_progress. Adds an
accepted flag to TurnResult so the renderer can show the move was
ignored. Regression in tests/level.sx asserts post-won and post-lost
play_turn leaves score/moves/status unchanged and that restart
re-enables play.
Add a thin, deterministic level loop over the headless model in board.sx:
- target_score: per-level score goal (DEFAULT_TARGET_SCORE=1500), seeded by init.
- Status (in_progress/won/lost) derived purely from score/target/move budget via
level_status; won is checked before lost so meeting the goal on the final move
wins. status_name for the HUD/snapshots.
- has_legal_swap: allocation-free deadlock probe (first legal pair short-circuits).
- reshuffle: Fisher-Yates over existing gems via the board's seeded RNG until the
arrangement has no immediate match and at least one legal move; consumes no
move, terminates via MAX_RESHUFFLE_TRIES.
- restart: reseed a fresh, reproducible level (resets cells/score/moves/goal).
- play_turn / TurnResult: commit_swap then reshuffle on deadlock while in
progress, reporting the resulting status.
tests/level.sx (golden tests/expected/level.{stdout,exit}) asserts: start
in_progress; one legal swap crossing a low goal -> won transition; budget
exhausted below an unreachable goal -> lost transition; a provably deadlocked
diagonal Latin-square board ((col-row) mod 6) reshuffles to >=1 legal move with
no immediate match and no move spent; restart resets progress and a fixed seed
reproduces the same starting board.
Gate: sx build --target ios-sim main.sx (exit 0); bash tools/run_tests.sh
(17 passed, 0 failed).
New gem_anim.sx adds a purely-visual per-gem pose set driven by a single
animation clock: a calm always-on idle breath (scale-pulse + bob, per-gem
phase, ramped in from rest), a selection pop, a landing squash-bounce, and
a clear pop. BoardView draws every settled gem through gem_pose_at /
gem_pose_frame; the move timeline (P6.1) and FX (P6.2) are untouched and the
input-lock semantics are unchanged (idle never locks input).
Determinism: the idle is always-on, so main reads M3TE_ANIM_TIME=<seconds>
to freeze the clock at a chosen phase (t==0 == the resting board, so the
pre-P6.3 goldens reproduce) and M3TE_SELECT=<cellIndex> to force a selection
for capture. tests/gem_pose.sx locks the t==0-rest invariant and the reaction
envelopes headlessly (fails if the idle ramp is dropped).
Goldens (deterministic capture): p6_idle_t0 (resting), p6_idle_mid (pinned
mid-breath), p6_select (selection pop on cell 3,3). Purely visual: no change
to model/score/moves/hit-testing.
Add a purely-visual, transient juice layer over a committed move — score
popups + a tinted particle/flash burst at the clears — with no change to the
model, score, moves, or settled board.
- assets/fx/particle.png: key the painted transparency checkerboard out of the
provided particle art to real alpha (8-connected border flood fill +
smooth luminance falloff that preserves the soft glow), downscaled to a
256x256 RGBA white sparkle. tools/key_particle.sx is the reproducible tool.
- board_fx.sx: BoardFx (live particle bursts + one "+points" popup) and
BoardFxAssets. The engine image path samples texture*white (no draw-time
tint), so the white sprite is tinted per gem colour at LOAD time into one
texture per colour; a burst animates by scale (grow -> shrink) and the soft
texture edges carry the fade. Combos (cascade depth > 1) burst bigger and the
popup is larger + gold. All driven by delta_time and self-pruning.
- board_anim.sx: AnimMove carries the model's cascade.awarded so the popup
shows the real payout without re-deriving any scoring in the view.
- board_view.sx / main.sx: wire BoardFx + the tinted assets, tick each frame,
spawn on a legal commit, and render bursts (clipped to the grid) under the
popups (drawn on top). Input-lock (BoardAnim.active) is untouched; FX never
gate input and may outlast the move slightly before vanishing.
Goldens (iPhone-17-class sim, iOS 26): p6_fx.png (combo: gold "+480" + bursts
mid-cascade), p6_fx_match.png (single match: "+30" + red burst), p6_fx_after.png
(settled board, FX fully gone). Gate: ios-sim build links, 15/15 logic tests
green (scoring/cascade goldens unchanged).
A swipe that began while a move animation was playing could still commit:
mouse_down latched the drag unconditionally and the animation-active check
sat at mouse_up, so a press made mid-animation committed once the timeline
finished before release — against a board mid-transition.
Gate input at gesture START instead. Add a pure `accepts_input(anim)`
predicate (false while a timeline is active) and check it at mouse_down: a
press begun mid-animation is dropped and never latches a drag, so it cannot
commit when the animation later settles. The now-dead mouse_up gate is
removed. Animation visuals and the logical model are unchanged.
Extend tests/anim_plan.sx to assert accepts_input rejects for the whole
window (idle accept / busy reject / settled accept) and that press-gating
drops the exact failure gesture a release-gate would let through.
Add a purely-visual animation timeline so the board no longer snaps on a
move. board_anim.sx records, on a value-copy of the pre-move board, the
swap and each cascade round's matched cells + per-column fall provenance,
then BoardView plays it over delta_time: the two swapped gems SLIDE between
cells (and ping out-and-back on an illegal swap), matched gems SCALE OUT,
and survivors FALL into place while refills drop in from above the grid.
The model stays authoritative: plan_and_commit still calls commit_swap on
the real board exactly as before, and the recording replays the identical
primitives from the identical cells + RNG state, so the timeline ends ON
the model's settled board. tests/anim_plan.sx is the determinism guard —
it asserts the committed board, score, moves, and the timeline's final
state all equal an independent commit_swap of the same move, that the
rounds are contiguous, and that an illegal swap records nothing and leaves
the board untouched. All pre-existing logic/cascade goldens stay green.
Evidence (sx-test-metal, iOS 26.0, time-sampled with temporarily-lengthened
durations; committed durations are the short production values):
goldens/p6_anim_swap.png gems sliding between (5,4)/(6,4)
goldens/p6_anim_clear.png matched reds scaling out in row 4
goldens/p6_anim_fall.png gems mid-fall with gaps + refill dropping in
goldens/p6_anim_after.png settled board == model (SCORE 30, MOVES 29/30)
Wire touch input into the model in BoardView.handle_event. A press records
the drag start (new DragInput, heap-allocated so it survives the per-frame
BoardView rebuild between mouse_down and mouse_up); the release resolves the
gesture against the same layout it was drawn with. A swipe — start→end mapped
by swipe_intent to an adjacent-swap intent — is fed straight into
commit_swap: a legal swap applies, cascades (clear→collapse→refill), accrues
score and spends a move; an illegal one reverts, no move. A sub-threshold /
off-board drag carries no intent and falls back to the tap behaviour
(toggle/clear selection). The next frame re-renders board + HUD from the model.
Reuses swipe.sx + board_layout.sx + commit_swap unchanged — this is wiring,
not new legality/cascade logic.
tests/swipe_commit.sx (new golden) drives the full path on the seeded board
(SEED 1337): a rightward swipe (0,0)->(1,0) is illegal (two reds) and reverts
byte-for-byte with no score/move; (5,4)->(6,4) is legal, completes R,R,R on
row 4, awards 30, spends one move.
Sim evidence (iPhone 17, iOS 26.0): goldens/p5_swap_before.png (SCORE 0,
MOVES 30/30) and goldens/p5_swap_after.png (SCORE 30, MOVES 29/30) bracket a
real idb-injected swipe at (276,475)->(327,475) pt = cell (5,4)->(6,4); the
three reds clear and the board matches the model's resolved state.
Add swipe.sx: a pure swipe_intent(layout, start, end) -> ?Swap that turns a
touch drag into an optional adjacent-swap intent (A, B). A is the cell under the
drag start (via BoardLayout.point_to_cell); B is its orthogonal neighbour along
the drag's dominant axis (larger of |dx|,|dy|, ties horizontal). Returns null for
sub-threshold drags (a tap, threshold = cell_size * 0.5), starts off the board,
or neighbours off the board. No rendering, no model mutation.
Lock the logic with tests/swipe_intent.sx (+ expected golden), feeding synthetic
down/up positions for right/left/up/down, sub-threshold tap, diagonal→dominant
(both axes), edge-outward off-board, and start-off-board. bash tools/run_tests.sh
passes (13/13); sx build --target ios-sim main.sx compiles.
Tap a gem to select it: BoardView hit-tests the touch to a grid cell and
draws a bright rim + translucent fill over it; tapping the same cell clears
the selection, tapping another moves it, tapping off-board clears it.
Selection only — no swap (that's P5). The HUD renders the live score and
remaining moves (out of the move limit) in the Lato font on a translucent
card above the grid.
The touch→cell geometry is factored into a pure BoardLayout (no GL/stb
imports) that BoardView composes and P5 will reuse for swap endpoints.
tests/hit_test.sx locks point_to_cell as the exact inverse of cell_frame
(every cell center round-trips; off-board taps reject) — headless because
BoardLayout pulls no C imports. goldens/p4_hud.png captures the scene after
a real idb tap at (201,437)pt: the HUD plus a yellow selection rim on the
red gem at cell (col 4, row 3).
Adopt the modules/ui UIPipeline framework (as the chess reference app does)
and replace the P0 placeholder quad with a BoardView (View protocol, modeled
on chess/board_view.sx):
- background.png fills the screen; an 8x8 cell.png grid is centered in the
safe area; each cell's gem is sampled from gems.png by UV column = gem index
(0=red .. 5=purple).
- Drive it from board.sx seeded with 1337 (the board_init golden's seed), so
the on-screen layout matches that snapshot gem-for-gem.
main.sx now hosts the view via UIPipeline (Metal on iOS, GL on desktop) and
heap-allocates the board/asset state behind pointers (UFCS method calls on a
value-typed global mutate a copy, so mutable state must live behind a pointer
as the reference app does).
Vendor the C deps the UI module's image/font path needs (stb_image,
stb_truetype, kb_text_shape, file_utils); their #include "vendors/..." paths
resolve relative to the project root.
Evidence: ios-sim build links clean; tools/run_tests.sh 11/11 pass; running
app captured at goldens/p4_board.png.
- assets/board/background.png: full-screen 863x1822 RGB gradient (opaque,
exact 9:19), re-encoded from the provided source.
- assets/board/cell.png: 128x128 RGBA rounded glass tile. The painted
gray/white transparency checkerboard is keyed to real alpha via an
8-connected flood fill from the border, using a low-saturation predicate
(checker spread<=12, panel is bluish spread>=20) so the rounded panel is
preserved; the clean RGBA is then downscaled 1254->128 with LANCZOS.
- assets/fonts/default.ttf: Lato Regular, SIL Open Font License 1.1
(tyPoland Lukasz Dziedzic, Reserved Font Name "Lato"); OFL.txt shipped
alongside per the license.
All three bundle into the ios-sim M3te.app build and decode cleanly.
