From 3f91b8ab19ef87f574cbdaeb49fd58f9c26e2452 Mon Sep 17 00:00:00 2001
From: Gustavo <ghlsem@gmail.com>
Date: Sun, 14 Jun 2026 16:10:24 -0300
Subject: [PATCH 1/2] feat(gui): add egui editor with live step grid +
 clickable toggles

Adds a custom nih_plug_egui editor restoring the Stage-1 UX: a 16-step grid
with a live playhead and click-to-toggle cells, plus sliders for the latent
vector, per-step pitches, timing, and tuning. Training UI from the original is
dropped (no runtime training; regeneration is reactive on latent change).

- src/shared.rs: lock-free SharedState (AtomicU16 step mask + AtomicUsize
  playhead) bridging audio thread and editor.
- src/lib.rs: maybe_regen writes the decoded pattern into shared.steps (now
  the playback source of truth); process reads on/off from the mask, publishes
  the playhead, and clears it when stopped; editor() wired up.
- src/params.rs: persisted EguiState (600x640).
- Pin nih_plug + nih_plug_egui to the same rev f36931f7; an unpinned top-level
  nih_plug pulled a second copy and broke the Params derive.

cargo test 16 pass; clap-validator 18 passed/0 failed/3 skipped.
---
 README.md                                     |   11 +-
 deepsteps-plugin/Cargo.lock                   | 1832 ++++++++++++++++-
 deepsteps-plugin/Cargo.toml                   |    3 +-
 deepsteps-plugin/src/editor.rs                |  134 ++
 deepsteps-plugin/src/lib.rs                   |   26 +-
 deepsteps-plugin/src/params.rs                |   11 +
 deepsteps-plugin/src/shared.rs                |  115 ++
 .../2026-06-14-stage3-egui-editor-design.md   |   51 +
 8 files changed, 2079 insertions(+), 104 deletions(-)
 create mode 100644 deepsteps-plugin/src/editor.rs
 create mode 100644 deepsteps-plugin/src/shared.rs
 create mode 100644 docs/plans/2026-06-14-stage3-egui-editor-design.md

diff --git a/README.md b/README.md
index 0e57fc4..0106704 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,11 @@ parameters into a 16-step pattern (which steps fire + a per-step "groove" sub-st
 offset). The sequencer plays that pattern at 4 steps/beat (16 per bar), quantising
 each step's pitch to a selected scale + key.
 
-**Parameters** (host-generic UI, no custom editor yet): Latent A–D, Gate length (ms),
+**Custom GUI** (egui editor): a 16-step grid with a live playhead and click-to-toggle
+cells (a click forces a step on/off, overriding the decoder until the next latent-driven
+regeneration), plus sliders for the latent vector, per-step pitches, timing, and tuning.
+
+**Parameters** (also host-automatable): Latent A–D, Gate length (ms),
 Sub-step scale, Sequence length (1–16), Key (0–11), Scale (14 options: Chromatic,
 Pentatonic Major/Minor, Major, Natural/Harmonic/Melodic Minor, Dorian, Phrygian,
 Lydian, Mixolydian, Locrian, Blues, Whole Tone), and 16 per-step note pitches.
@@ -86,8 +90,9 @@ clock and sequences off **incoming MIDI clock**.
 
 ## Known issues / pending
 
-- **No custom GUI.** The plugin is parameters-only; the host draws a generic control
-  panel. The original's 16-step visual editor is not yet ported.
+- **Step toggles are not preset-persisted.** Grid clicks override the decoder at
+  runtime but are not saved in presets (they are runtime state, not params) and a
+  latent move regenerates over them. Promoting them to params is a possible later pass.
 - **Shipped weights are from a synthetic dataset.** The original never shipped trained
   weights (it random-inits and only becomes meaningful after in-session training).
   This port freezes an **offline-trained** decoder, but the committed
diff --git a/deepsteps-plugin/Cargo.lock b/deepsteps-plugin/Cargo.lock
index de529a2..99343db 100644
--- a/deepsteps-plugin/Cargo.lock
+++ b/deepsteps-plugin/Cargo.lock
@@ -2,6 +2,22 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "ab_glyph"
+version = "0.2.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01c0457472c38ea5bd1c3b5ada5e368271cb550be7a4ca4a0b4634e9913f6cc2"
+dependencies = [
+ "ab_glyph_rasterizer",
+ "owned_ttf_parser",
+]
+
+[[package]]
+name = "ab_glyph_rasterizer"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "366ffbaa4442f4684d91e2cd7c5ea7c4ed8add41959a31447066e279e432b618"
+
 [[package]]
 name = "addr2line"
 version = "0.25.1"
@@ -17,6 +33,43 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
 
+[[package]]
+name = "ahash"
+version = "0.8.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a15f179cd60c4584b8a8c596927aadc462e27f2ca70c04e0071964a73ba7a75"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "version_check",
+ "zerocopy",
+]
+
+[[package]]
+name = "android-activity"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f2a1bb052857d5dd49572219344a7332b31b76405648eabac5bc68978251bcd"
+dependencies = [
+ "android-properties",
+ "bitflags 2.13.0",
+ "cc",
+ "jni",
+ "libc",
+ "log",
+ "ndk",
+ "ndk-context",
+ "ndk-sys",
+ "num_enum",
+ "thiserror 2.0.18",
+]
+
+[[package]]
+name = "android-properties"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc7eb209b1518d6bb87b283c20095f5228ecda460da70b44f0802523dea6da04"
+
 [[package]]
 name = "anyhow"
 version = "1.0.102"
@@ -29,6 +82,18 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "170433209e817da6aae2c51aa0dd443009a613425dd041ebfb2492d1c4c11a25"
 
+[[package]]
+name = "as-raw-xcb-connection"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "175571dd1d178ced59193a6fc02dde1b972eb0bc56c892cde9beeceac5bf0f6b"
+
+[[package]]
+name = "atomic-waker"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1505bd5d3d116872e7271a6d4e16d81d0c8570876c8de68093a09ac269d8aac0"
+
 [[package]]
 name = "atomic_float"
 version = "0.1.0"
@@ -47,11 +112,17 @@ version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.1.19",
  "libc",
  "winapi",
 ]
 
+[[package]]
+name = "autocfg"
+version = "1.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
+
 [[package]]
 name = "backtrace"
 version = "0.3.76"
@@ -67,6 +138,23 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "baseview"
+version = "0.1.0"
+source = "git+https://github.com/RustAudio/baseview.git?rev=9a0b42c09d712777b2edb4c5e0cb6baf21e988f0#9a0b42c09d712777b2edb4c5e0cb6baf21e988f0"
+dependencies = [
+ "cocoa",
+ "core-foundation",
+ "keyboard-types",
+ "nix",
+ "objc",
+ "raw-window-handle 0.5.2",
+ "uuid",
+ "winapi",
+ "x11",
+ "x11rb",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -79,6 +167,67 @@ version = "2.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4388bee8683e3d04af747c73422af53102d2bd24d9eadb6cbc100baef4b43f8"
 
+[[package]]
+name = "block"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d8c1fef690941d3e7788d328517591fecc684c084084702d6ff1641e993699a"
+
+[[package]]
+name = "block2"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2c132eebf10f5cad5289222520a4a058514204aed6d791f1cf4fe8088b82d15f"
+dependencies = [
+ "objc2",
+]
+
+[[package]]
+name = "bumpalo"
+version = "3.20.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72f5acc6cb2ba439de613abc23857ec3d78374d8ed5ac84e9d11336e87da8649"
+
+[[package]]
+name = "bytemuck"
+version = "1.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8efb64bd706a16a1bdde310ae86b351e4d21550d98d056f22f8a7f7a2183fec"
+dependencies = [
+ "bytemuck_derive",
+]
+
+[[package]]
+name = "bytemuck_derive"
+version = "1.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9abbd1bc6865053c427f7198e6af43bfdedc55ab791faed4fbd361d789575ff"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "bytes"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e748733b7cbc798e1434b6ac524f0c1ff2ab456fe201501e6497c8417a4fc33"
+
+[[package]]
+name = "calloop"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b99da2f8558ca23c71f4fd15dc57c906239752dd27ff3c00a1d56b685b7cbfec"
+dependencies = [
+ "bitflags 2.13.0",
+ "log",
+ "polling",
+ "rustix 0.38.44",
+ "slab",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "camino"
 version = "1.2.2"
@@ -108,7 +257,19 @@ dependencies = [
  "semver",
  "serde",
  "serde_json",
- "thiserror",
+ "thiserror 1.0.69",
+]
+
+[[package]]
+name = "cc"
+version = "1.2.64"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dad887fd958be91b5098c0248def011f4523ab786cd411be668777e55063501f"
+dependencies = [
+ "find-msvc-tools",
+ "jobserver",
+ "libc",
+ "shlex",
 ]
 
 [[package]]
@@ -117,11 +278,88 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
+[[package]]
+name = "cfg_aliases"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
+
 [[package]]
 name = "clap-sys"
 version = "0.5.0"
 source = "git+https://github.com/micahrj/clap-sys.git?rev=25d7f53fdb6363ad63fbd80049cb7a42a97ac156#25d7f53fdb6363ad63fbd80049cb7a42a97ac156"
 
+[[package]]
+name = "clipboard-win"
+version = "5.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bde03770d3df201d4fb868f2c9c59e66a3e4e2bd06692a0fe701e7103c7e84d4"
+dependencies = [
+ "error-code",
+]
+
+[[package]]
+name = "cocoa"
+version = "0.24.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f425db7937052c684daec3bd6375c8abe2d146dca4b8b143d6db777c39138f3a"
+dependencies = [
+ "bitflags 1.3.2",
+ "block",
+ "cocoa-foundation",
+ "core-foundation",
+ "core-graphics 0.22.3",
+ "foreign-types 0.3.2",
+ "libc",
+ "objc",
+]
+
+[[package]]
+name = "cocoa-foundation"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c6234cbb2e4c785b456c0644748b1ac416dd045799740356f8363dfe00c93f7"
+dependencies = [
+ "bitflags 1.3.2",
+ "block",
+ "core-foundation",
+ "core-graphics-types",
+ "libc",
+ "objc",
+]
+
+[[package]]
+name = "combine"
+version = "4.6.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba5a308b75df32fe02788e748662718f03fde005016435c444eea572398219fd"
+dependencies = [
+ "bytes",
+ "memchr",
+]
+
+[[package]]
+name = "concurrent-queue"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ca0197aee26d1ae37445ee532fefce43251d24cc7c166799f4d46817f1d3973"
+dependencies = [
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "copypasta"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e6811e17f81fe246ef2bc553f76b6ee6ab41a694845df1d37e52a92b7bbd38a"
+dependencies = [
+ "clipboard-win",
+ "objc2",
+ "objc2-app-kit",
+ "objc2-foundation",
+ "x11-clipboard",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.9.4"
@@ -138,6 +376,43 @@ version = "0.8.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
+[[package]]
+name = "core-graphics"
+version = "0.22.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2581bbab3b8ffc6fcbd550bf46c355135d16e9ff2a6ea032ad6b9bf1d7efe4fb"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "core-graphics-types",
+ "foreign-types 0.3.2",
+ "libc",
+]
+
+[[package]]
+name = "core-graphics"
+version = "0.23.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c07782be35f9e1140080c6b96f0d44b739e2278479f64e02fdab4e32dfd8b081"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "core-graphics-types",
+ "foreign-types 0.5.0",
+ "libc",
+]
+
+[[package]]
+name = "core-graphics-types"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "45390e6114f68f718cc7a830514a96f903cccd70d02a8f6d9f643ac4ba45afaf"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "libc",
+]
+
 [[package]]
 name = "crossbeam"
 version = "0.8.4"
@@ -194,11 +469,18 @@ version = "0.8.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
 
+[[package]]
+name = "cursor-icon"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f27ae1dd37df86211c42e150270f82743308803d90a6f6e6651cd730d5e1732f"
+
 [[package]]
 name = "deepsteps-plugin"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "nih_plug",
+ "nih_plug_egui",
  "serde",
  "serde_json",
 ]
@@ -210,136 +492,575 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7cd812cc2bc1d69d4764bd80df88b4317eaef9e773c75226407d9bc0876b211c"
 
 [[package]]
-name = "equivalent"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
-
-[[package]]
-name = "gimli"
-version = "0.32.3"
+name = "dispatch"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e629b9b98ef3dd8afe6ca2bd0f89306cec16d43d907889945bc5d6687f2f13c7"
+checksum = "bd0c93bb4b0c6d9b77f4435b0ae98c24d17f1c45b2ff844c6151a07256ca923b"
 
 [[package]]
-name = "goblin"
-version = "0.6.1"
+name = "dlib"
+version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d6b4de4a8eb6c46a8c77e1d3be942cb9a8bf073c22374578e5ba4b08ed0ff68"
+checksum = "ab8ecd87370524b461f8557c119c405552c396ed91fc0a8eec68679eab26f94a"
 dependencies = [
- "log",
- "plain",
- "scroll",
+ "libloading",
 ]
 
 [[package]]
-name = "hashbrown"
-version = "0.17.1"
+name = "dpi"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed5909b6e89a2db4456e54cd5f673791d7eca6732202bbf2a9cc504fe2f9b84a"
+checksum = "d8b14ccef22fc6f5a8f4d7d768562a182c04ce9a3b3157b91390b52ddfdf1a76"
 
 [[package]]
-name = "hermit-abi"
-version = "0.1.19"
+name = "ecolor"
+version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
+checksum = "bc4feb366740ded31a004a0e4452fbf84e80ef432ecf8314c485210229672fd1"
 dependencies = [
- "libc",
+ "bytemuck",
+ "emath",
 ]
 
 [[package]]
-name = "indexmap"
-version = "2.14.0"
+name = "egui"
+version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d466e9454f08e4a911e14806c24e16fba1b4c121d1ea474396f396069cf949d9"
+checksum = "25dd34cec49ab55d85ebf70139cb1ccd29c977ef6b6ba4fe85489d6877ee9ef3"
 dependencies = [
- "equivalent",
- "hashbrown",
+ "ahash",
+ "bitflags 2.13.0",
+ "emath",
+ "epaint",
+ "nohash-hasher",
+ "profiling",
 ]
 
 [[package]]
-name = "itoa"
-version = "1.0.18"
+name = "egui-baseview"
+version = "0.5.0"
+source = "git+https://github.com/BillyDM/egui-baseview.git?rev=ec70c3fe6b2f070dcacbc22924431edbe24bd1c0#ec70c3fe6b2f070dcacbc22924431edbe24bd1c0"
+dependencies = [
+ "baseview",
+ "copypasta",
+ "egui",
+ "egui_glow",
+ "keyboard-types",
+ "log",
+ "open",
+ "raw-window-handle 0.5.2",
+ "thiserror 2.0.18",
+]
+
+[[package]]
+name = "egui_glow"
+version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
+checksum = "910906e3f042ea6d2378ec12a6fd07698e14ddae68aed2d819ffe944a73aab9e"
+dependencies = [
+ "ahash",
+ "bytemuck",
+ "egui",
+ "glow",
+ "log",
+ "memoffset 0.9.1",
+ "profiling",
+ "wasm-bindgen",
+ "web-sys",
+ "winit",
+]
 
 [[package]]
-name = "libc"
-version = "0.2.186"
+name = "emath"
+version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
+checksum = "9e4cadcff7a5353ba72b7fea76bf2122b5ebdbc68e8155aa56dfdea90083fe1b"
+dependencies = [
+ "bytemuck",
+]
 
 [[package]]
-name = "lock_api"
-version = "0.4.14"
+name = "epaint"
+version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "224399e74b87b5f3557511d98dff8b14089b3dadafcab6bb93eab67d3aace965"
+checksum = "41fcc0f5a7c613afd2dee5e4b30c3e6acafb8ad6f0edb06068811f708a67c562"
 dependencies = [
- "scopeguard",
+ "ab_glyph",
+ "ahash",
+ "bytemuck",
+ "ecolor",
+ "emath",
+ "epaint_default_fonts",
+ "nohash-hasher",
+ "parking_lot",
+ "profiling",
 ]
 
 [[package]]
-name = "log"
-version = "0.4.32"
+name = "epaint_default_fonts"
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+ "time",
+ "windows",
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+ "atomic_refcell",
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  "objc",
  "parking_lot",
- "raw-window-handle",
+ "raw-window-handle 0.5.2",
  "serde",
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@@ -361,13 +1082,27 @@ dependencies = [
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+dependencies = [
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+ "crossbeam",
+ "egui-baseview",
+ "nih_plug",
+ "parking_lot",
+ "raw-window-handle 0.5.2",
+ "serde",
+]
+
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@@ -381,12 +1116,53 @@ dependencies = [
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+ "quote",
+ "syn 2.0.117",
+]
+
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@@ -405,6 +1181,209 @@ dependencies = [
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+dependencies = [
+ "bitflags 2.13.0",
+ "block2",
+ "objc2",
+ "objc2-cloud-kit",
+ "objc2-core-data",
+ "objc2-core-image",
+ "objc2-core-location",
+ "objc2-foundation",
+ "objc2-link-presentation",
+ "objc2-quartz-core",
+ "objc2-symbols",
+ "objc2-uniform-type-identifiers",
+ "objc2-user-notifications",
+]
+
+[[package]]
+name = "objc2-uniform-type-identifiers"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44fa5f9748dbfe1ca6c0b79ad20725a11eca7c2218bceb4b005cb1be26273bfe"
+dependencies = [
+ "block2",
+ "objc2",
+ "objc2-foundation",
+]
+
+[[package]]
+name = "objc2-user-notifications"
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+dependencies = [
+ "bitflags 2.13.0",
+ "block2",
+ "objc2",
+ "objc2-core-location",
+ "objc2-foundation",
+]
+
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 name = "object"
 version = "0.37.3"
@@ -420,6 +1399,36 @@ version = "1.21.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
 
+[[package]]
+name = "open"
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+checksum = "2fbaa89d2ddc8473c78a3adf69eea8cffa28c483b8e02a971ef31527cd0fc92c"
+dependencies = [
+ "is-wsl",
+ "libc",
+ "pathdiff",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5df339f526ea9a60e371768d50efc2f2508c7203290731565d1f7a6f71d21747"
+dependencies = [
+ "libc",
+ "libredox",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36820e9051aca1014ddc75770aab4d68bc1e9e632f0f5627c4086bc216fb583b"
+dependencies = [
+ "ttf-parser",
+]
+
 [[package]]
 name = "parking_lot"
 version = "0.12.5"
@@ -438,23 +1447,90 @@ checksum = "2621685985a2ebf1c516881c026032ac7deafcda1a2c9b7850dc81e3dfcb64c1"
 dependencies = [
  "cfg-if",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.5.18",
  "smallvec",
  "windows-link",
 ]
 
+[[package]]
+name = "pathdiff"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df94ce210e5bc13cb6651479fa48d14f601d9858cfe0467f43ae157023b938d3"
+
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+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2466b2336ed02bcdca6b294417127b90ec92038d1d5c4fbeac971a922e0e0924"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c96395f0a926bc13b1c17622aaddda1ecb55d49c8f1bf9777e4d877800a43f8b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
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+
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+
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 checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
 
+[[package]]
+name = "polling"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d0e4f59085d47d8241c88ead0f274e8a0cb551f3625263c05eb8dd897c34218"
+dependencies = [
+ "cfg-if",
+ "concurrent-queue",
+ "hermit-abi 0.5.2",
+ "pin-project-lite",
+ "rustix 1.1.4",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "powerfmt"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
+[[package]]
+name = "proc-macro-crate"
+version = "3.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e67ba7e9b2b56446f1d419b1d807906278ffa1a658a8a5d8a39dcb1f5a78614f"
+dependencies = [
+ "toml_edit 0.25.12+spec-1.1.0",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.106"
@@ -464,6 +1540,12 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "profiling"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d595e54a326bc53c1c197b32d295e14b169e3cfeaa8dc82b529f947fba6bcf5"
+
 [[package]]
 name = "quote"
 version = "1.0.45"
@@ -473,12 +1555,33 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "r-efi"
+version = "5.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
+
 [[package]]
 name = "raw-window-handle"
 version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2ff9a1f06a88b01621b7ae906ef0211290d1c8a168a15542486a8f61c0833b9"
 
+[[package]]
+name = "raw-window-handle"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20675572f6f24e9e76ef639bc5552774ed45f1c30e2951e1e99c59888861c539"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4722d768eff46b75989dd134e5c353f0d6296e5aaa3132e776cbdb56be7731aa"
+dependencies = [
+ "bitflags 1.3.2",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.5.18"
@@ -488,6 +1591,15 @@ dependencies = [
  "bitflags 2.13.0",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b44b894f2a6e36457d665d1e08c3866add6ed5e70050c1b4ba8a8ddedb02ce7"
+dependencies = [
+ "bitflags 2.13.0",
+]
+
 [[package]]
 name = "reflink"
 version = "0.1.3"
@@ -503,6 +1615,56 @@ version = "0.1.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b50b8869d9fc858ce7266cce0194bd74df58b9d0e3f6df3a9fc8eb470d95c09d"
 
+[[package]]
+name = "rustc_version"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
+dependencies = [
+ "semver",
+]
+
+[[package]]
+name = "rustix"
+version = "0.38.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fdb5bc1ae2baa591800df16c9ca78619bf65c0488b41b96ccec5d11220d8c154"
+dependencies = [
+ "bitflags 2.13.0",
+ "errno",
+ "libc",
+ "linux-raw-sys 0.4.15",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "rustix"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
+dependencies = [
+ "bitflags 2.13.0",
+ "errno",
+ "libc",
+ "linux-raw-sys 0.12.1",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "rustversion"
+version = "1.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
+
+[[package]]
+name = "same-file"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -583,12 +1745,49 @@ dependencies = [
 ]
 
 [[package]]
-name = "serde_spanned"
-version = "0.6.9"
+name = "serde_spanned"
+version = "0.6.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf41e0cfaf7226dca15e8197172c295a782857fcb97fad1808a166870dee75a3"
+dependencies = [
+ "serde",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8fadd59c855ef2080decdef8ff161eb6661b86933c9d82e5ba29dc602a55aba"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94f90157bb87cddf702797c5dadfa0be7d266cdf49e22da2fcaa32eff75b2c33"
+dependencies = [
+ "rustc_version",
+ "simdutf8",
+]
+
+[[package]]
+name = "simdutf8"
+version = "0.1.5"
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-checksum = "bf41e0cfaf7226dca15e8197172c295a782857fcb97fad1808a166870dee75a3"
+checksum = "e3a9fe34e3e7a50316060351f37187a3f546bce95496156754b601a5fa71b76e"
+
+[[package]]
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+version = "0.4.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c790de23124f9ab44544d7ac05d60440adc586479ce501c1d6d7da3cd8c9cf5"
+
+[[package]]
+name = "slotmap"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bdd58c3c93c3d278ca835519292445cb4b0d4dc59ccfdf7ceadaab3f8aeb4038"
 dependencies = [
- "serde",
+ "version_check",
 ]
 
 [[package]]
@@ -597,6 +1796,15 @@ version = "1.15.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90"
 
+[[package]]
+name = "smol_str"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd538fb6910ac1099850255cf94a94df6551fbdd602454387d0adb2d1ca6dead"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -634,7 +1842,16 @@ version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
 dependencies = [
- "thiserror-impl",
+ "thiserror-impl 1.0.69",
+]
+
+[[package]]
+name = "thiserror"
+version = "2.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4"
+dependencies = [
+ "thiserror-impl 2.0.18",
 ]
 
 [[package]]
@@ -648,6 +1865,17 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "thiserror-impl"
+version = "2.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "time"
 version = "0.3.49"
@@ -688,8 +1916,8 @@ checksum = "dd79e69d3b627db300ff956027cc6c3798cef26d22526befdfcd12feeb6d2257"
 dependencies = [
  "serde",
  "serde_spanned",
- "toml_datetime",
- "toml_edit",
+ "toml_datetime 0.6.11",
+ "toml_edit 0.19.15",
 ]
 
 [[package]]
@@ -701,6 +1929,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "toml_datetime"
+version = "1.1.1+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3165f65f62e28e0115a00b2ebdd37eb6f3b641855f9d636d3cd4103767159ad7"
+dependencies = [
+ "serde_core",
+]
+
 [[package]]
 name = "toml_edit"
 version = "0.19.15"
@@ -710,16 +1947,80 @@ dependencies = [
  "indexmap",
  "serde",
  "serde_spanned",
- "toml_datetime",
- "winnow",
+ "toml_datetime 0.6.11",
+ "winnow 0.5.40",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.25.12+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2153edc6955a6c354fad8f5efd38b6a8769bdccf9fe50f8e1329f81b0baa5d7"
+dependencies = [
+ "indexmap",
+ "toml_datetime 1.1.1+spec-1.1.0",
+ "toml_parser",
+ "winnow 1.0.3",
 ]
 
+[[package]]
+name = "toml_parser"
+version = "1.1.2+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2abe9b86193656635d2411dc43050282ca48aa31c2451210f4202550afb7526"
+dependencies = [
+ "winnow 1.0.3",
+]
+
+[[package]]
+name = "tracing"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63e71662fa4b2a2c3a26f570f037eb95bb1f85397f3cd8076caed2f026a6d100"
+dependencies = [
+ "pin-project-lite",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.36"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db97caf9d906fbde555dd62fa95ddba9eecfd14cb388e4f491a66d74cd5fb79a"
+
+[[package]]
+name = "ttf-parser"
+version = "0.25.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2df906b07856748fa3f6e0ad0cbaa047052d4a7dd609e231c4f72cee8c36f31"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.13.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c6f5d3c3b1bf09027a88a6bc961fc00497d651009560b5463668dc81b0fa87a8"
+
+[[package]]
+name = "uuid"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc5cf98d8186244414c848017f0e2676b3fcb46807f6668a97dfe67359a3c4b7"
+dependencies = [
+ "getrandom 0.2.17",
+]
+
+[[package]]
+name = "version_check"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
+
 [[package]]
 name = "vst3-com"
 version = "0.1.0"
@@ -757,6 +2058,106 @@ dependencies = [
  "vst3-com",
 ]
 
+[[package]]
+name = "walkdir"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
+dependencies = [
+ "same-file",
+ "winapi-util",
+]
+
+[[package]]
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+
+[[package]]
+name = "wasip2"
+version = "1.0.4+wasi-0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b67efb37e106e55ce722a510d6b5f9c17f083e5fc79afc2badeb12cc313d9487"
+dependencies = [
+ "wit-bindgen",
+]
+
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.125"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ddb3f79143bced6de84270411622a2699cee572fc0875aeaf1e7867cf9fca1a"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "rustversion",
+ "wasm-bindgen-macro",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.75"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "503b14d284f2c8dac03b819967e155ea753f573586193b2b2c95990cb5d69280"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.125"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e21a184b13fb19e157296e2c46056aec9092264fab83e4ba59e68c61b323c3d"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.125"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fecefd9c35bd935a20fc3fc344b5f29138961e4f47fb03297d88f2587afb5ebd"
+dependencies = [
+ "bumpalo",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.125"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23939e44bb9a5d7576fa2b563dc2e136628f1224e88a8deed09e04858b77871f"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "web-sys"
+version = "0.3.102"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6430a72df5eb332242960fe84b3002a241163998241eb596d4f739b9757061d"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "web-time"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a6580f308b1fad9207618087a65c04e7a10bc77e02c8e84e9b00dd4b12fa0bb"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "widestring"
 version = "1.2.1"
@@ -785,7 +2186,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -800,7 +2201,7 @@ version = "0.44.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e745dab35a0c4c77aa3ce42d595e13d2003d6902d6b08c9ef5fc326d08da12b"
 dependencies = [
- "windows-targets",
+ "windows-targets 0.42.2",
 ]
 
 [[package]]
@@ -809,6 +2210,24 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
 
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.59.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.61.2"
@@ -824,13 +2243,29 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e5180c00cd44c9b1c88adb3693291f1cd93605ded80c250a75d472756b4d071"
 dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
+ "windows_aarch64_gnullvm 0.42.2",
+ "windows_aarch64_msvc 0.42.2",
+ "windows_i686_gnu 0.42.2",
+ "windows_i686_msvc 0.42.2",
+ "windows_x86_64_gnu 0.42.2",
+ "windows_x86_64_gnullvm 0.42.2",
+ "windows_x86_64_msvc 0.42.2",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm 0.52.6",
+ "windows_aarch64_msvc 0.52.6",
+ "windows_i686_gnu 0.52.6",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc 0.52.6",
+ "windows_x86_64_gnu 0.52.6",
+ "windows_x86_64_gnullvm 0.52.6",
+ "windows_x86_64_msvc 0.52.6",
 ]
 
 [[package]]
@@ -839,42 +2274,134 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "winit"
+version = "0.30.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6755fa58a9f8350bd1e472d4c3fcc25f824ec358933bba33306d0b63df5978d"
+dependencies = [
+ "android-activity",
+ "atomic-waker",
+ "bitflags 2.13.0",
+ "block2",
+ "bytemuck",
+ "calloop",
+ "cfg_aliases",
+ "concurrent-queue",
+ "core-foundation",
+ "core-graphics 0.23.2",
+ "cursor-icon",
+ "dpi",
+ "js-sys",
+ "libc",
+ "ndk",
+ "objc2",
+ "objc2-app-kit",
+ "objc2-foundation",
+ "objc2-ui-kit",
+ "orbclient",
+ "percent-encoding",
+ "pin-project",
+ "raw-window-handle 0.6.2",
+ "redox_syscall 0.4.1",
+ "rustix 0.38.44",
+ "smol_str",
+ "tracing",
+ "unicode-segmentation",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "web-time",
+ "windows-sys 0.52.0",
+ "x11-dl",
+ "x11rb",
+ "xkbcommon-dl",
+]
+
 [[package]]
 name = "winnow"
 version = "0.5.40"
@@ -884,6 +2411,99 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "winnow"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0592e1c9d151f854e6fd382574c3a0855250e1d9b2f99d9281c6e6391af352f1"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "wit-bindgen"
+version = "0.57.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ebf944e87a7c253233ad6766e082e3cd714b5d03812acc24c318f549614536e"
+
+[[package]]
+name = "x11"
+version = "2.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "502da5464ccd04011667b11c435cb992822c2c0dbde1770c988480d312a0db2e"
+dependencies = [
+ "libc",
+ "pkg-config",
+]
+
+[[package]]
+name = "x11-clipboard"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "662d74b3d77e396b8e5beb00b9cad6a9eccf40b2ef68cc858784b14c41d535a3"
+dependencies = [
+ "libc",
+ "x11rb",
+]
+
+[[package]]
+name = "x11-dl"
+version = "2.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38735924fedd5314a6e548792904ed8c6de6636285cb9fec04d5b1db85c1516f"
+dependencies = [
+ "libc",
+ "once_cell",
+ "pkg-config",
+]
+
+[[package]]
+name = "x11rb"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9993aa5be5a26815fe2c3eacfc1fde061fc1a1f094bf1ad2a18bf9c495dd7414"
+dependencies = [
+ "as-raw-xcb-connection",
+ "gethostname",
+ "libc",
+ "libloading",
+ "once_cell",
+ "rustix 1.1.4",
+ "x11rb-protocol",
+ "xcursor",
+]
+
+[[package]]
+name = "x11rb-protocol"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea6fc2961e4ef194dcbfe56bb845534d0dc8098940c7e5c012a258bfec6701bd"
+
+[[package]]
+name = "xcursor"
+version = "0.3.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bec9e4a500ca8864c5b47b8b482a73d62e4237670e5b5f1d6b9e3cae50f28f2b"
+
+[[package]]
+name = "xkbcommon-dl"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d039de8032a9a8856a6be89cea3e5d12fdd82306ab7c94d74e6deab2460651c5"
+dependencies = [
+ "bitflags 2.13.0",
+ "dlib",
+ "log",
+ "once_cell",
+ "xkeysym",
+]
+
+[[package]]
+name = "xkeysym"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9cc00251562a284751c9973bace760d86c0276c471b4be569fe6b068ee97a56"
+
 [[package]]
 name = "xtask"
 version = "0.1.0"
@@ -891,6 +2511,26 @@ dependencies = [
  "nih_plug_xtask",
 ]
 
+[[package]]
+name = "zerocopy"
+version = "0.8.52"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce1022995ff5ff5d841ad7d994facc23098cd40152f2c1d11cd607c6f530653f"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.52"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ae7f38b72ec2a254e2b87ef277cf2cd4fb97cbebf944faa6f33354da0867930"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "zmij"
 version = "1.0.21"
diff --git a/deepsteps-plugin/Cargo.toml b/deepsteps-plugin/Cargo.toml
index c0bc71f..6f1cc3b 100644
--- a/deepsteps-plugin/Cargo.toml
+++ b/deepsteps-plugin/Cargo.toml
@@ -11,7 +11,8 @@ license = "see repo"
 crate-type = ["cdylib", "lib"]
 
 [dependencies]
-nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git" }
+nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git", rev = "f36931f7af4646065488a9845d8f8c2f95252c23" }
+nih_plug_egui = { git = "https://github.com/robbert-vdh/nih-plug.git", rev = "f36931f7af4646065488a9845d8f8c2f95252c23" }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 
diff --git a/deepsteps-plugin/src/editor.rs b/deepsteps-plugin/src/editor.rs
new file mode 100644
index 0000000..c96497b
--- /dev/null
+++ b/deepsteps-plugin/src/editor.rs
@@ -0,0 +1,134 @@
+//! Custom egui editor for DeepSteps.
+//!
+//! Restores the Stage-1 UX: a 16-step grid with a live playhead and click-to-
+//! toggle cells, plus sliders for the latent vector, per-step pitches, timing,
+//! and tuning. The step on/off pattern is owned by the audio thread via
+//! [`SharedState`]; everything else is a nih-plug param edited through the
+//! `ParamSetter`.
+
+use std::sync::Arc;
+
+use nih_plug::prelude::Editor;
+use nih_plug_egui::{create_egui_editor, egui, widgets::ParamSlider};
+
+use crate::params::DeepStepsParams;
+use crate::shared::SharedState;
+
+/// State handed to every egui frame.
+struct EditorState {
+    params: Arc<DeepStepsParams>,
+    shared: Arc<SharedState>,
+}
+
+pub fn create(
+    params: Arc<DeepStepsParams>,
+    shared: Arc<SharedState>,
+) -> Option<Box<dyn Editor>> {
+    let egui_state = params.editor_state.clone();
+    create_egui_editor(
+        egui_state,
+        EditorState { params, shared },
+        |_ctx, _state| {},
+        |ctx, setter, state| {
+            // Keep the playhead animating while the transport plays.
+            ctx.request_repaint();
+
+            egui::CentralPanel::default().show(ctx, |ui| {
+                egui::ScrollArea::vertical().show(ui, |ui| {
+                    ui.heading("DeepSteps");
+                    ui.add_space(4.0);
+
+                    step_grid(ui, &state.shared);
+                    ui.add_space(8.0);
+
+                    let p = &state.params;
+
+                    egui::CollapsingHeader::new("Latent")
+                        .default_open(true)
+                        .show(ui, |ui| {
+                            labeled(ui, "A", |ui| ui.add(ParamSlider::for_param(&p.latent_a, setter)));
+                            labeled(ui, "B", |ui| ui.add(ParamSlider::for_param(&p.latent_b, setter)));
+                            labeled(ui, "C", |ui| ui.add(ParamSlider::for_param(&p.latent_c, setter)));
+                            labeled(ui, "D", |ui| ui.add(ParamSlider::for_param(&p.latent_d, setter)));
+                        });
+
+                    egui::CollapsingHeader::new("Timing")
+                        .default_open(true)
+                        .show(ui, |ui| {
+                            labeled(ui, "Gate", |ui| ui.add(ParamSlider::for_param(&p.gate, setter)));
+                            labeled(ui, "Substep", |ui| ui.add(ParamSlider::for_param(&p.substep_scale, setter)));
+                            labeled(ui, "Seq Len", |ui| ui.add(ParamSlider::for_param(&p.seq_len, setter)));
+                        });
+
+                    egui::CollapsingHeader::new("Tuning")
+                        .default_open(true)
+                        .show(ui, |ui| {
+                            labeled(ui, "Key", |ui| ui.add(ParamSlider::for_param(&p.key, setter)));
+                            labeled(ui, "Scale", |ui| ui.add(ParamSlider::for_param(&p.scale, setter)));
+                        });
+
+                    egui::CollapsingHeader::new("Pitches")
+                        .default_open(false)
+                        .show(ui, |ui| {
+                            egui::Grid::new("pitch-grid").num_columns(2).show(ui, |ui| {
+                                for (i, note) in p.notes.iter().enumerate() {
+                                    ui.label(format!("{:>2}", i + 1));
+                                    ui.add(ParamSlider::for_param(&note.pitch, setter));
+                                    ui.end_row();
+                                }
+                            });
+                        });
+                });
+            });
+        },
+    )
+}
+
+/// One labelled row: fixed-width label + the widget.
+fn labeled(ui: &mut egui::Ui, label: &str, add: impl FnOnce(&mut egui::Ui) -> egui::Response) {
+    ui.horizontal(|ui| {
+        ui.add_sized([64.0, 18.0], egui::Label::new(label));
+        add(ui);
+    });
+}
+
+/// Draw the 16-step grid: filled cell = step on, red outline = playhead. A click
+/// on a cell toggles it (overriding the decoder until the next regeneration).
+fn step_grid(ui: &mut egui::Ui, shared: &SharedState) {
+    const N: usize = 16;
+    let avail = ui.available_width().min(576.0);
+    let gap = 4.0;
+    let cell = ((avail - gap * (N as f32 - 1.0)) / N as f32).clamp(12.0, 32.0);
+
+    let (resp, painter) = ui.allocate_painter(
+        egui::vec2(N as f32 * cell + (N as f32 - 1.0) * gap, cell),
+        egui::Sense::click(),
+    );
+    let origin = resp.rect.min;
+    let current = shared.current();
+    let clicked_pos = resp.clicked().then(|| resp.interact_pointer_pos()).flatten();
+
+    for i in 0..N {
+        let x = origin.x + i as f32 * (cell + gap);
+        let rect = egui::Rect::from_min_size(egui::pos2(x, origin.y), egui::vec2(cell, cell));
+        let fill = if shared.get(i) {
+            egui::Color32::from_rgb(80, 180, 250)
+        } else {
+            egui::Color32::from_gray(60)
+        };
+        painter.rect_filled(rect, 4.0, fill);
+        if current == i {
+            painter.rect_stroke(
+                rect,
+                4.0,
+                egui::Stroke::new(2.0, egui::Color32::from_rgb(250, 80, 80)),
+                egui::StrokeKind::Inside,
+            );
+        }
+        if let Some(pos) = clicked_pos {
+            if rect.contains(pos) {
+                shared.toggle(i);
+            }
+        }
+    }
+}
diff --git a/deepsteps-plugin/src/lib.rs b/deepsteps-plugin/src/lib.rs
index ccb0004..305eabb 100644
--- a/deepsteps-plugin/src/lib.rs
+++ b/deepsteps-plugin/src/lib.rs
@@ -1,6 +1,8 @@
 pub mod decoder;
+pub mod editor;
 pub mod params;
 pub mod sequencer;
+pub mod shared;
 
 use nih_plug::prelude::*;
 use std::sync::Arc;
@@ -8,6 +10,7 @@ use std::sync::Arc;
 use decoder::Decoder;
 use params::{DeepStepsParams, ScaleParam};
 use sequencer::{quantize, schedule_step, steps_in_range, Scale, STEP_BEATS};
+use shared::{pack, SharedState, NO_STEP};
 
 /// A NoteOff scheduled to fire in a future process block. `remaining` is the
 /// sample count from the *current* block's start until the NoteOff should fire;
@@ -23,8 +26,12 @@ struct DeepSteps {
     /// Last latent vector that produced `steps`/`substeps`. Initialised to NaN so
     /// the first `maybe_regen` always regenerates (NaN != anything).
     last_latent: [f64; 4],
-    steps: [bool; 16],
+    /// Per-step timing offsets from the decoder (not exposed in the GUI). The
+    /// on/off pattern itself lives in `shared.steps` so the editor can read and
+    /// toggle it.
     substeps: [f64; 16],
+    /// Audio<->GUI shared state: step on/off mask + playhead index.
+    shared: Arc<SharedState>,
     pending: Vec<PendingOff>,
     sample_rate: f32,
 }
@@ -42,8 +49,8 @@ impl Default for DeepSteps {
             params: Arc::new(DeepStepsParams::default()),
             decoder,
             last_latent: [f64::NAN; 4],
-            steps: [false; 16],
             substeps: [0.0; 16],
+            shared: Arc::new(SharedState::default()),
             pending: Vec::new(),
             sample_rate: 44100.0,
         }
@@ -81,7 +88,10 @@ impl DeepSteps {
         ];
         if z != self.last_latent {
             let (s, ss) = self.decoder.generate(&z);
-            self.steps = s;
+            // Publish the freshly-decoded pattern as the playback source of
+            // truth. This overwrites any user grid toggles — moving a latent
+            // regenerates, which is the intended generative behaviour.
+            self.shared.set_mask(pack(&s));
             self.substeps = ss;
             self.last_latent = z;
         }
@@ -117,6 +127,10 @@ impl Plugin for DeepSteps {
         self.params.clone()
     }
 
+    fn editor(&mut self, _async_executor: AsyncExecutor<Self>) -> Option<Box<dyn Editor>> {
+        editor::create(self.params.clone(), self.shared.clone())
+    }
+
     fn initialize(
         &mut self,
         _audio_io_layout: &AudioIOLayout,
@@ -140,6 +154,7 @@ impl Plugin for DeepSteps {
 
         // Not playing: flush any pending NoteOffs so notes don't hang, then bail.
         if !transport.playing {
+            self.shared.set_current(NO_STEP);
             for po in self.pending.drain(..) {
                 context.send_event(NoteEvent::NoteOff {
                     timing: 0,
@@ -190,7 +205,10 @@ impl Plugin for DeepSteps {
 
         for abs_step in steps_in_range(pos_beats, block_end, seq_len) {
             let idx = abs_step.rem_euclid(seq_len as i64) as usize;
-            if !self.steps[idx] {
+            // Publish the playhead so the editor highlights the active step,
+            // whether or not this step is on.
+            self.shared.set_current(idx);
+            if !self.shared.get(idx) {
                 continue;
             }
             let onset_beat = abs_step as f64 * STEP_BEATS;
diff --git a/deepsteps-plugin/src/params.rs b/deepsteps-plugin/src/params.rs
index f0ee27b..5c91acc 100644
--- a/deepsteps-plugin/src/params.rs
+++ b/deepsteps-plugin/src/params.rs
@@ -6,8 +6,13 @@
 #![allow(dead_code)]
 
 use nih_plug::prelude::*;
+use nih_plug_egui::EguiState;
 use std::sync::Arc;
 
+/// Default editor window size, matching the Stage-1 openFrameworks canvas.
+pub const EDITOR_WIDTH: u32 = 600;
+pub const EDITOR_HEIGHT: u32 = 640;
+
 /// Sequencer scale, mirroring `sequencer::Scale` (Task 9). Kept separate so the
 /// nih-plug `Enum` derive (host automation IDs/names) stays decoupled from the
 /// DSP enum; Task 13 maps between them.
@@ -80,6 +85,10 @@ impl Default for NoteParam {
 /// Top-level plugin parameters.
 #[derive(Params)]
 pub struct DeepStepsParams {
+    /// Persisted egui editor state (remembers the window size across sessions).
+    #[persist = "editor-state"]
+    pub editor_state: Arc<EguiState>,
+
     /// Latent dimension A driving the decoder (later host-MIDI-CC-mappable).
     #[id = "latentA"]
     pub latent_a: FloatParam,
@@ -126,6 +135,8 @@ impl Default for DeepStepsParams {
         };
 
         Self {
+            editor_state: EguiState::from_size(EDITOR_WIDTH, EDITOR_HEIGHT),
+
             latent_a: latent("Latent A"),
             latent_b: latent("Latent B"),
             latent_c: latent("Latent C"),
diff --git a/deepsteps-plugin/src/shared.rs b/deepsteps-plugin/src/shared.rs
new file mode 100644
index 0000000..7f58eb8
--- /dev/null
+++ b/deepsteps-plugin/src/shared.rs
@@ -0,0 +1,115 @@
+//! Lock-free state shared between the audio thread and the egui editor.
+//!
+//! The step on/off pattern and the playhead index are runtime state (not
+//! nih-plug params), so the editor cannot read them through the param system.
+//! `SharedState` is wrapped in an `Arc`, held by the plugin, and cloned into the
+//! editor; both sides touch it through atomics with `Relaxed` ordering — the
+//! values are independent (a display mask and a playhead index) with no
+//! cross-variable invariant to protect.
+
+use std::sync::atomic::{AtomicU16, AtomicUsize, Ordering};
+
+/// Playhead sentinel meaning "no step is currently playing" (transport stopped).
+pub const NO_STEP: usize = usize::MAX;
+
+pub struct SharedState {
+    /// Effective per-step on/off mask: bit `i` set => step `i` plays. Written by
+    /// the decoder on regeneration and flipped by user grid clicks; read by both
+    /// playback (`process`) and the editor's grid.
+    pub steps: AtomicU16,
+    /// Index of the step currently playing, for the editor's playhead highlight,
+    /// or [`NO_STEP`] when the transport is stopped.
+    pub current_step: AtomicUsize,
+}
+
+impl Default for SharedState {
+    fn default() -> Self {
+        Self {
+            steps: AtomicU16::new(0),
+            current_step: AtomicUsize::new(NO_STEP),
+        }
+    }
+}
+
+impl SharedState {
+    /// Whether step `i` (0..16) is currently on.
+    pub fn get(&self, i: usize) -> bool {
+        self.steps.load(Ordering::Relaxed) & (1 << i) != 0
+    }
+
+    /// Replace the whole on/off mask (used by the decoder on regeneration).
+    pub fn set_mask(&self, mask: u16) {
+        self.steps.store(mask, Ordering::Relaxed);
+    }
+
+    /// Read the whole on/off mask.
+    pub fn mask(&self) -> u16 {
+        self.steps.load(Ordering::Relaxed)
+    }
+
+    /// Flip step `i` (0..16) — used by a user grid click. Persists until the next
+    /// regeneration overwrites the mask.
+    pub fn toggle(&self, i: usize) {
+        self.steps.fetch_xor(1 << i, Ordering::Relaxed);
+    }
+
+    /// Publish the currently-playing step index for the playhead highlight.
+    pub fn set_current(&self, idx: usize) {
+        self.current_step.store(idx, Ordering::Relaxed);
+    }
+
+    /// Read the currently-playing step index (or [`NO_STEP`]).
+    pub fn current(&self) -> usize {
+        self.current_step.load(Ordering::Relaxed)
+    }
+}
+
+/// Pack a 16-element bool pattern into a `u16` mask (bit `i` = `pattern[i]`).
+pub fn pack(pattern: &[bool; 16]) -> u16 {
+    let mut m = 0u16;
+    for (i, &on) in pattern.iter().enumerate() {
+        if on {
+            m |= 1 << i;
+        }
+    }
+    m
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn mask_roundtrip_and_toggle() {
+        let s = SharedState::default();
+        assert_eq!(s.mask(), 0);
+        assert_eq!(s.current(), NO_STEP);
+
+        let mut pat = [false; 16];
+        pat[0] = true;
+        pat[3] = true;
+        pat[15] = true;
+        s.set_mask(pack(&pat));
+
+        assert!(s.get(0));
+        assert!(!s.get(1));
+        assert!(s.get(3));
+        assert!(s.get(15));
+
+        s.toggle(1);
+        assert!(s.get(1));
+        s.toggle(0);
+        assert!(!s.get(0));
+
+        s.set_current(7);
+        assert_eq!(s.current(), 7);
+    }
+
+    #[test]
+    fn pack_matches_bits() {
+        let mut pat = [false; 16];
+        pat[2] = true;
+        pat[5] = true;
+        assert_eq!(pack(&pat), (1 << 2) | (1 << 5));
+    }
+}
diff --git a/docs/plans/2026-06-14-stage3-egui-editor-design.md b/docs/plans/2026-06-14-stage3-egui-editor-design.md
new file mode 100644
index 0000000..96ca61c
--- /dev/null
+++ b/docs/plans/2026-06-14-stage3-egui-editor-design.md
@@ -0,0 +1,51 @@
+# Stage 3 — egui Editor (GUI Port)
+
+## Context
+
+Stage 2 shipped the plugin params-only (host-generic UI). This stage adds a custom
+**egui** editor that restores the Stage-1 openFrameworks UX (`DS-UI.png`): a 16-step
+grid with a live playhead, plus controls for the latent vector, per-step pitches,
+timing, and tuning. The training UI from the original (GENERATE / Train / Make Dataset
+/ Open Corpus / Epochs / Loss) is dropped — there is no runtime training, and
+regeneration is reactive on latent change.
+
+Decisions: `nih_plug_egui` backend; clean modern egui look; clickable step toggles
+(override the decoder until next regen); full editor in one pass.
+
+## Architecture
+
+The step on/off pattern and the playhead index are audio-thread runtime state, not
+nih-plug params, so the editor reaches them through a lock-free bridge.
+
+- **`src/shared.rs`** — `SharedState { steps: AtomicU16, current_step: AtomicUsize }`,
+  held as `Arc` by the plugin and cloned into the editor. `Relaxed` ordering (no
+  cross-variable invariant). `pack(&[bool;16]) -> u16` helper.
+- **`src/lib.rs`** — `maybe_regen` writes the decoded pattern into `shared.steps`
+  (now the playback source of truth, replacing the old `self.steps` array). `process`
+  reads each step's on/off from the mask, publishes the playing index to
+  `shared.current_step`, and writes `NO_STEP` when stopped. `editor()` returns the
+  egui editor.
+- **`src/editor.rs`** — `create_egui_editor`; `ParamSlider` widgets for latent / gate /
+  substep / seq_len / key / scale / 16 pitches; a custom painter-drawn 16-cell grid
+  (fill = on, red outline = playhead, click = `shared.toggle(i)`). Repaints each frame
+  so the playhead animates.
+- **`src/params.rs`** — `#[persist = "editor-state"] editor_state: Arc<EguiState>`
+  (default 600×640, the Stage-1 canvas).
+
+## Trade-offs
+
+- Step toggles are runtime overrides, **not** params: not preset-saved, not automatable,
+  and a latent move regenerates over them (intended generative semantics). Promoting to
+  16 bool params + merge logic is a possible later pass.
+- Both `nih_plug` and `nih_plug_egui` are pinned to the same git rev
+  (`f36931f7…`); leaving the top-level `nih_plug` unpinned pulled a second, newer copy
+  and broke the `PersistentField`/`Params` derive with a trait mismatch.
+
+## Verification
+
+- `cargo test` — 16 pass (existing sequencer/decoder + new `SharedState` bit tests).
+- `cargo build --release`, `cargo xtask bundle deepsteps-plugin --release` — clean.
+- `clap-validator validate` — 18 passed / 0 failed / 3 skipped (unchanged).
+- Manual (Carla): editor opens at persisted size; grid shows the decoder pattern;
+  playhead advances during play; clicking a cell flips it and changes MIDI output;
+  moving a latent regenerates the grid.

From c42a1ff3a731f39e1a791fb6ef38caa7a34d2687 Mon Sep 17 00:00:00 2001
From: Gustavo <ghlsem@gmail.com>
Date: Sun, 14 Jun 2026 16:15:45 -0300
Subject: [PATCH 2/2] fix(gui): default-open Pitches in a compact 4x4 grid,
 shrink window to 520

---
 deepsteps-plugin/src/editor.rs | 15 +++++++++++----
 deepsteps-plugin/src/params.rs |  2 +-
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/deepsteps-plugin/src/editor.rs b/deepsteps-plugin/src/editor.rs
index c96497b..5b230ab 100644
--- a/deepsteps-plugin/src/editor.rs
+++ b/deepsteps-plugin/src/editor.rs
@@ -68,13 +68,20 @@ pub fn create(
                         });
 
                     egui::CollapsingHeader::new("Pitches")
-                        .default_open(false)
+                        .default_open(true)
                         .show(ui, |ui| {
-                            egui::Grid::new("pitch-grid").num_columns(2).show(ui, |ui| {
+                            // 4 columns of (label + slider) => 4 rows of 4 steps,
+                            // keeping the 16 pitches compact.
+                            egui::Grid::new("pitch-grid").num_columns(8).show(ui, |ui| {
                                 for (i, note) in p.notes.iter().enumerate() {
                                     ui.label(format!("{:>2}", i + 1));
-                                    ui.add(ParamSlider::for_param(&note.pitch, setter));
-                                    ui.end_row();
+                                    ui.add_sized(
+                                        [90.0, 18.0],
+                                        ParamSlider::for_param(&note.pitch, setter),
+                                    );
+                                    if i % 4 == 3 {
+                                        ui.end_row();
+                                    }
                                 }
                             });
                         });
diff --git a/deepsteps-plugin/src/params.rs b/deepsteps-plugin/src/params.rs
index 5c91acc..f4e2103 100644
--- a/deepsteps-plugin/src/params.rs
+++ b/deepsteps-plugin/src/params.rs
@@ -11,7 +11,7 @@ use std::sync::Arc;
 
 /// Default editor window size, matching the Stage-1 openFrameworks canvas.
 pub const EDITOR_WIDTH: u32 = 600;
-pub const EDITOR_HEIGHT: u32 = 640;
+pub const EDITOR_HEIGHT: u32 = 520;
 
 /// Sequencer scale, mirroring `sequencer::Scale` (Task 9). Kept separate so the
 /// nih-plug `Enum` derive (host automation IDs/names) stays decoupled from the