chore: scaffold Kolmekivi from nih-plug-template

A stereo delay/echo plugin. Scaffolded rather than forked: the template and the plugins built from it diverge on branding immediately, so they share code by file copy — as codename-206 does — not by merge base. This repo starts its own history. Branded with tools/brand-plugin.sh. Everything derives from PLUGIN_NAME ("Kolmekivi" -> kolmekivi / Kolmekivi / KolmekiviParams), so no override is pinned. CODENAME is set to the repo name and, by convention, stays there even if the plugin is later renamed. Two identity constants are now frozen and must never move, because hosts key saved projects and presets off them: CLAP_ID org.novoyuuparosk.kolmekivi VST3_CLASS_ID KolmekiviDelay!! (exactly 16 bytes) Host categorisation is set for a delay rather than left at the template's generic placeholders — ClapFeature::{AudioEffect,Delay,Stereo} and Vst3SubCategory::{Fx,Delay}. These decide where the plugin appears in a host's browser and are not covered by the branding checker, which knows about names rather than categories. The DSP is not written. src/lib.rs still carries the template's example gain parameter, so the plugin builds, bundles and loads while the delay is implemented. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WHt4DykxXaQnyaJfyS8KCn
2026-09-04 16:09:53 +09:00
commit 728cce5e97
17 changed files with 4411 additions and 0 deletions
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 [alias]
 xtask = "run --package xtask --release --"
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 # Shell scripts must keep LF endings. core.autocrlf=true on Windows would
 # otherwise check them out CRLF, which a strict POSIX sh (dash, CI containers)
 # rejects at the shebang.
 *.sh text eol=lf
@@ -0,0 +1,61 @@
 name: CI
 on:
  push:
    branches: [ master ]
    paths:
      - 'src/**'
      - 'xtask/**'
      - 'Cargo.toml'
      - 'Cargo.lock'
      - 'bundler.toml'
      - 'tools/**'
  pull_request:
    branches: [ master ]
  workflow_dispatch:
 # Target the self-hosted Rust/audio runner registered to the `musiikki` org.
 #
 # The runner is host-mode, so the rustup toolchain installed for the
 # `gitea-runner` user is used directly — nothing installs per run, and the cargo
 # registry cache stays warm between jobs.
 #
 # NOTE: `rust-audio` is an ORG-SCOPED label. A plugin cloned from this template
 # into a different org will not see that runner, and its jobs will queue
 # indefinitely rather than fail. Either register a runner advertising this label
 # for that org, or change `runs-on` below.
 jobs:
  build:
    name: Build
    runs-on: rust-audio
    steps:
      - uses: actions/checkout@v4
      - name: Toolchain
        run: |
          cargo --version
          rustc --version
          echo "CARGO_HOME=${CARGO_HOME:?not set on this runner}"
      # Cheap and needs no toolchain, so it runs first: a rename that only
      # landed in half the files is worth catching before spending a build on it.
      - name: Branding consistency
        run: sh tools/check-branding.sh
      # The default build is CLAP-only; the vst3 feature is opt-in, so both
      # configurations have to be built to know the cfg gates are still correct.
      - name: Build (default, CLAP only)
        run: cargo build --release
      - name: Build (--features vst3)
        run: cargo build --release --features vst3
      - name: Test
        run: cargo test --release --features vst3
      # Proves the xtask bundler still works, which a plain `cargo build` does
      # not exercise — the bundle step is where bundler.toml and the crate name
      # have to agree.
      - name: Bundle
        run: cargo xtask bundle kolmekivi --release --features vst3
@@ -0,0 +1,7 @@
 /target
 # Local NIH-plug reference clone ("deluxe kit") and cookiecutter template.
 # Kept out of version control; the build depends on nih-plug via a pinned git rev,
 # not on these working copies. Clone them locally for reading the examples.
 /nih-plug
 /_template
@@ -0,0 +1,48 @@
 [package]
 name = "kolmekivi"
 version = "0.1.0"
 edition = "2021"
 authors = ["Mikkeli Matlock <mikkeli@novoyuuparosk.org>"]
 homepage = "http://192.168.2.199:3005/musiikki/kolmekivi"
 description = "A stereo delay/echo plugin built with NIH-plug"
 license = "GPL-3.0-or-later"
 [workspace]
 members = ["xtask"]
 [features]
 # CLAP only by default. This crate is GPL-3.0-or-later, so enabling VST3 no
 # longer raises a licensing question — the gate now just keeps the default build
 # light, since `vst3-sys` and its macro machinery are a sizeable dependency a
 # CLAP-only plugin never needs. Flip `default` to ["vst3"] if you always want it:
 #   cargo xtask bundle kolmekivi --release --features vst3
 default = []
 vst3 = ["nih_plug/vst3"]
 [lib]
 # `cdylib` is the plugin binary; `lib` (rlib) lets `cargo test` link the unit tests.
 crate-type = ["cdylib", "lib"]
 # Future-incompatibility warnings are deferred hard errors: rustc is telling you
 # this code stops compiling on some later release. Denying the group turns that
 # into a build failure the day it appears, rather than accumulating unnoticed
 # until a toolchain bump breaks the build on a day you did not choose. Style and
 # clippy lints are deliberately untouched - they stay warnings.
 [lints.rust]
 future_incompatible = { level = "deny", priority = -1 }
 [dependencies]
 # Pinned to the same commit as musiikki/codename-206.
 # Update the `rev` when you want to update NIH-plug.
 # `default-features = false` drops nih_plug's default `vst3` feature; see [features] above.
 nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git", rev = "f36931f7af4646065488a9845d8f8c2f95252c23", default-features = false, features = ["assert_process_allocs"] }
 nih_plug_egui = { git = "https://github.com/robbert-vdh/nih-plug.git", rev = "f36931f7af4646065488a9845d8f8c2f95252c23" }
 [profile.release]
 lto = "thin"
 strip = "symbols"
 [profile.profiling]
 inherits = "release"
 debug = true
 strip = "none"
@@ -0,0 +1,674 @@
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 for and in connection with specific products or compilations that
 contain the covered work, unless you entered into that arrangement,
 or that patent license was granted, prior to 28 March 2007.
  Nothing in this License shall be construed as excluding or limiting
 any implied license or other defenses to infringement that may
 otherwise be available to you under applicable patent law.
  12. No Surrender of Others' Freedom.
  If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
 excuse you from the conditions of this License.  If you cannot convey a
 covered work so as to satisfy simultaneously your obligations under this
 License and any other pertinent obligations, then as a consequence you may
 not convey it at all.  For example, if you agree to terms that obligate you
 to collect a royalty for further conveying from those to whom you convey
 the Program, the only way you could satisfy both those terms and this
 License would be to refrain entirely from conveying the Program.
  13. Use with the GNU Affero General Public License.
  Notwithstanding any other provision of this License, you have
 permission to link or combine any covered work with a work licensed
 under version 3 of the GNU Affero General Public License into a single
 combined work, and to convey the resulting work.  The terms of this
 License will continue to apply to the part which is the covered work,
 but the special requirements of the GNU Affero General Public License,
 section 13, concerning interaction through a network will apply to the
 combination as such.
  14. Revised Versions of this License.
  The Free Software Foundation may publish revised and/or new versions of
 the GNU General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
  Each version is given a distinguishing version number.  If the
 Program specifies that a certain numbered version of the GNU General
 Public License "or any later version" applies to it, you have the
 option of following the terms and conditions either of that numbered
 version or of any later version published by the Free Software
 Foundation.  If the Program does not specify a version number of the
 GNU General Public License, you may choose any version ever published
 by the Free Software Foundation.
  If the Program specifies that a proxy can decide which future
 versions of the GNU General Public License can be used, that proxy's
 public statement of acceptance of a version permanently authorizes you
 to choose that version for the Program.
  Later license versions may give you additional or different
 permissions.  However, no additional obligations are imposed on any
 author or copyright holder as a result of your choosing to follow a
 later version.
  15. Disclaimer of Warranty.
  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
 IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  16. Limitation of Liability.
  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGES.
  17. Interpretation of Sections 15 and 16.
  If the disclaimer of warranty and limitation of liability provided
 above cannot be given local legal effect according to their terms,
 reviewing courts shall apply local law that most closely approximates
 an absolute waiver of all civil liability in connection with the
 Program, unless a warranty or assumption of liability accompanies a
 copy of the Program in return for a fee.
                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these terms.
  To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) 2026  Mikkeli Matlock
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
    <program>  Copyright (C) 2026  Mikkeli Matlock
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
 The hypothetical commands `show w' and `show c' should show the appropriate
 parts of the General Public License.  Of course, your program's commands
 might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
 <https://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <https://www.gnu.org/licenses/why-not-lgpl.html>.
@@ -0,0 +1,46 @@
 Kolmekivi
 Copyright 2026 Mikkeli Matlock
 This product is licensed under the GNU General Public License v3.0 or later.
 See LICENSE for the full terms.
 --------------------------------------------------------------------------------
 Third-party material
 --------------------------------------------------------------------------------
 Portions of src/lib.rs derive from the NIH-plug cookiecutter template and from
 NIH-plug's `gain` example plugin, both by Robbert van der Helm:
    https://github.com/robbert-vdh/nih-plug-template
    https://github.com/robbert-vdh/nih-plug
 Those portions are licensed under the ISC License:
    ISC License
    Copyright (c) 2022 Robbert van der Helm
    Permission to use, copy, modify, and/or distribute this software for any
    purpose with or without fee is hereby granted, provided that the above
    copyright notice and this permission notice appear in all copies.
    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
    SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
    OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
    CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 ISC is GPL-compatible, so this notice is retained rather than superseded.
 --------------------------------------------------------------------------------
 Note on the `vst3` feature
 --------------------------------------------------------------------------------
 Building with `--features vst3` links `vst3-sys`, which is licensed GPLv3 or
 later. This is the reason a distributed VST3 build must be GPL-licensed. No
 Steinberg SDK source is vendored or redistributed by this project; "VST" is a
 trademark of Steinberg Media Technologies GmbH, and using it to describe a
 distributed product is governed by Steinberg's trademark terms, separately from
 any copyright licence above.
@@ -0,0 +1,177 @@
 # Kolmekivi
 A stereo delay/echo plugin — Rust, CLAP/VST3, egui.
 Scaffolded from [`musiikki/nih-plug-template`](http://192.168.2.199:3005/musiikki/nih-plug-template);
 the DSP is not written yet, the plugin currently passes audio through an example gain stage.
 ## Quick Start
 ```bash
 # Clone this repo as your starting point
 git clone http://192.168.2.199:3005/musiikki/nih-plug-template my-plugin
 cd my-plugin
 # Edit: src/lib.rs, Cargo.toml, bundler.toml — replace placeholder values
 # See musiikki/codename-206 for a real-world example of how to fill these in
 # Then verify the rename landed everywhere
 sh check-branding.sh
 ```
 ## Renaming
 Identity is duplicated across `Cargo.toml`, `bundler.toml`, `src/lib.rs`, `NOTICE`,
 `Cargo.lock`, the CI workflow and the docs. Nothing makes those agree, so a half-finished
 rename builds a bundle under one name while CI bundles another.
 Everything for it lives in `tools/`:
 ```
 tools/branding.conf         the names, and what derives from what
 tools/branding-sites.tsv    where each name has to appear, and in what form
 tools/brand-plugin.sh       changes names
 tools/check-branding.sh     verifies them
 ```
 ```bash
 sh tools/brand-plugin.sh                         # interactive; Enter keeps a value
 sh tools/brand-plugin.sh --display "Fuzz Box"    # or non-interactive; dry run
 sh tools/brand-plugin.sh --display "Fuzz Box" --apply
 sh tools/check-branding.sh                       # exit 0 = consistent, 1 = drift
 ```
 **One name drives the rest.** `PLUGIN_NAME` derives the package name (`Fuzz Box` →
 `fuzz_box`), the Rust types (`FuzzBox`, `FuzzBoxParams`) and the display name. Each is
 overridable in `branding.conf`, because the derivation is sometimes wrong and sometimes
 outright invalid — `206 Prototype` derives to `206_prototype`, which Cargo rejects since a
 package name cannot start with a digit. The helper refuses those, along with Rust keywords
 and built-in crate names.
 **The checker does both halves.** Every canonical value is asserted *present* where it
 belongs, and every retired spelling is swept for. Absence alone is not enough: renaming to
 the wrong new spelling would pass a stale-sweep and still break CI.
 **Two things it will not do for you.** `CLAP_ID` and `VST3_CLASS_ID` are how hosts recognise
 saved projects and presets — change either and every existing session silently loses the
 plugin, with no error. They need `--allow-identity-change`, and the 16-byte class ID is
 *proposed* rather than derived, because that choice is yours. And `CLAP_DESCRIPTION` is
 rejected if it carries a retired name or the repo codename: hosts show it to users who never
 knew your development history.
 **The repo name is deliberately not derived.** It is fixed when the repo is created and keeps
 its development codename while the plugin gets a product name. `CODENAME` records it so it
 can be kept out of user-facing text.
 Adding a site the template doesn't ship is one row in `branding-sites.tsv` with owner
 `custom` — no shell to edit, and it survives regeneration. Rows the helper owns are rewritten
 on each rename; custom rows are carried through and value-substituted like any other file.
 Both files can be hand-edited; the helper is what keeps them agreeing, so run the checker
 after if you do.
 ## Build
 ```bash
 # Install Rust via rustup: https://rustup.rs
 # No VST3 SDK needed — NIH-plug bundles its own bindings.
 # Build + bundle the CLAP (default)
 cargo xtask bundle kolmekivi --release
 # Add the VST3 as well — see the licensing note below before you do this
 cargo xtask bundle kolmekivi --release --features vst3
 ```
 **Output:** `target/bundled/<name>.clap` (and `<name>.vst3` with `--features vst3`), where
 `<name>` is the `name` set in `bundler.toml` — **not** the crate name. Out of the box that
 means `target/bundled/Kolmekivi.clap`.
 On Linux the egui editor needs the GUI development headers:
 ```bash
 sudo apt install pkg-config libgl-dev libx11-dev libxcursor-dev libxcb1-dev \
    libxcb-icccm4-dev libxcb-dri2-0-dev libx11-xcb-dev libxkbcommon-dev libxkbcommon-x11-dev
 ```
 ## Deploy
 ### FL Studio
 Build with `--features vst3` first if you want the VST3 (see the licensing note below).
 FL Studio scans `C:\Program Files\Common Files\VST3` by default, **ignores directory junctions**
 (so a symlinked bundle is invisible to its scanner), and caches failed scans.
 1. Copy the `.vst3` bundle to a folder FL scans (e.g. `C:\Program Files\Common Files\VST3`).
 2. Copy the `.clap` bundle to a folder FL scans (e.g. `C:\Program Files\Common Files\CLAP`).
 3. In FL Studio: **Options → Manage plugins → tick "Rescan previously failed plugins" → Find installed plugins**, then search for your plugin name (set in `bundler.toml`).
 ### Linux
 ```bash
 # CLAP
 cp -r "target/bundled/Kolmekivi.clap" ~/.clap/
 # VST3 (only exists if you built with --features vst3)
 cp -r "target/bundled/Kolmekivi.vst3" ~/.vst3/
 # Or globally:
 # sudo cp -r "target/bundled/Kolmekivi.clap" /usr/lib/clap/
 # sudo cp -r "target/bundled/Kolmekivi.vst3" /usr/lib/vst3/
 ```
 ## Project Structure
 ```
 Cargo.toml          # Package deps + the opt-in `vst3` feature — NIH-plug pinned to codename-206's rev
 bundler.toml        # Bundle name for `cargo xtask bundle`
 src/lib.rs          # Plugin skeleton — params, DSP, and egui editor, with one example gain param
 xtask/              # Bundler xtask (cargo xtask bundle)
 .cargo/config.toml  # xtask alias
 tools/              # Branding toolkit — see Renaming
 .gitattributes      # Pins *.sh to LF so Windows checkouts keep a valid shebang
 .github/workflows/  # CI: branding check, both feature sets build, test, bundle
 ```
 ## CI
 `.github/workflows/ci.yaml` gates pushes and PRs on the branding check, a build of both
 feature sets, `cargo test`, and a bundle — enough to catch a rename that only half-landed,
 a `cfg(feature = "vst3")` gate that stopped compiling, or a `bundler.toml` that no longer
 matches the crate name.
 It targets `runs-on: rust-audio`, an **org-scoped** runner label. A plugin cloned into a
 different org will not see that runner and its jobs will queue indefinitely rather than fail
 — register a runner advertising the label for that org, or change `runs-on`.
 Deliberately not covered: plugin performance. Realtime cost can only be measured meaningfully
 against a real audio deadline, and `Plugin::process()` cannot be called from a test at all
 (`ProcessContext` requires a `Transport`, whose constructor and fields are `pub(crate)` to
 nih-plug). Benchmark your DSP types directly if you need it.
 ## License
 **GPL-3.0-or-later.** See `LICENSE` for the terms and `NOTICE` for third-party attribution.
 Plugins cloned from this template inherit GPL-3.0-or-later, because the template's own code
 is under it. If you need a permissive plugin, this is the wrong starting point — write the
 skeleton yourself against NIH-plug directly, which is ISC.
 Parts of `src/lib.rs` derive from Robbert van der Helm's NIH-plug cookiecutter template and
 `gain` example, both ISC. ISC is GPL-compatible, so that notice is retained in `NOTICE`
 rather than superseded.
 ## VST3 and Steinberg
 `vst3-sys`, which `nih_export_vst3!()` needs, is GPLv3-or-later — chosen by its own authors,
 who describe their port as a derivative of Steinberg's SDK that "was not made in isolation."
 That obligation is what makes a distributed VST3 build GPL-licensed, and it holds regardless
 of any question about Steinberg's own rights. Being GPL-3.0-or-later already, this template
 satisfies it.
 No Steinberg SDK source is vendored or redistributed here, so there is nothing to accept at
 build time. Separately from copyright, **"VST" is a trademark of Steinberg Media Technologies
 GmbH**; describing a distributed product as a VST plugin is governed by their trademark terms.
 If you intend to distribute commercially under that name, that is the part worth legal advice.
 CLAP carries none of this — no GPL dependency and no trademark encumbrance.
@@ -0,0 +1,7 @@
 # Metadata for NIH-plug's `cargo xtask bundle <package>` bundler.
 #
 # [package_name]
 # name = "Human Readable Bundle Name"  # defaults to <package_name>
 [kolmekivi]
 name = "Kolmekivi"
@@ -0,0 +1,147 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 use nih_plug::prelude::*;
 use nih_plug_egui::{create_egui_editor, egui, widgets, EguiState};
 use std::sync::Arc;
 // ──────────────────────────────────────────────
 // Params — add your plugin parameters here.
 // See musiikki/codename-206/src/params.rs for a real example.
 // ──────────────────────────────────────────────
 #[derive(Params)]
 struct KolmekiviParams {
    /// Editor window size, persisted with the plugin state.
    #[persist = "editor-state"]
    editor_state: Arc<EguiState>,
    /// Example parameter — replace with your own. The `id` is the stable key the host
    /// stores automation against, so never change it once you've shipped.
    #[id = "gain"]
    gain: FloatParam,
 }
 impl Default for KolmekiviParams {
    fn default() -> Self {
        Self {
            editor_state: EguiState::from_size(320, 160),
            gain: FloatParam::new(
                "Gain",
                util::db_to_gain(0.0),
                FloatRange::Skewed {
                    min: util::db_to_gain(-30.0),
                    max: util::db_to_gain(30.0),
                    factor: FloatRange::gain_skew_factor(-30.0, 30.0),
                },
            )
            .with_smoother(SmoothingStyle::Logarithmic(50.0))
            .with_unit(" dB")
            .with_value_to_string(formatters::v2s_f32_gain_to_db(2))
            .with_string_to_value(formatters::s2v_f32_gain_to_db()),
        }
    }
 }
 // ──────────────────────────────────────────────
 // Plugin
 // ──────────────────────────────────────────────
 #[derive(Default)]
 struct Kolmekivi {
    params: Arc<KolmekiviParams>,
 }
 impl Plugin for Kolmekivi {
    // TODO: Replace these placeholder values with your plugin's metadata.
    const NAME: &'static str = "Kolmekivi";
    const VENDOR: &'static str = "Novoyuuparosk";
    const URL: &'static str = env!("CARGO_PKG_HOMEPAGE");
    const EMAIL: &'static str = "mikkeli@novoyuuparosk.org";
    const VERSION: &'static str = env!("CARGO_PKG_VERSION");
    const AUDIO_IO_LAYOUTS: &'static [AudioIOLayout] = &[AudioIOLayout {
        main_input_channels: NonZeroU32::new(2),
        main_output_channels: NonZeroU32::new(2),
        ..AudioIOLayout::const_default()
    }];
    const MIDI_INPUT: MidiConfig = MidiConfig::None;
    const MIDI_OUTPUT: MidiConfig = MidiConfig::None;
    const SAMPLE_ACCURATE_AUTOMATION: bool = true;
    type SysExMessage = ();
    type BackgroundTask = ();
    fn params(&self) -> Arc<dyn Params> {
        self.params.clone()
    }
    fn editor(&mut self, _async_executor: AsyncExecutor<Self>) -> Option<Box<dyn Editor>> {
        // TODO: Build your own egui layout here.
        let params = self.params.clone();
        create_egui_editor(
            self.params.editor_state.clone(),
            (),
            |_, _| {},
            move |egui_ctx, setter, _state| {
                egui::CentralPanel::default().show(egui_ctx, |ui| {
                    ui.label("Gain");
                    ui.add(widgets::ParamSlider::for_param(&params.gain, setter));
                });
            },
        )
    }
    fn initialize(
        &mut self,
        _audio_io_layout: &AudioIOLayout,
        _buffer_config: &BufferConfig,
        _context: &mut impl InitContext<Self>,
    ) -> bool {
        true
    }
    fn reset(&mut self) {}
    fn process(
        &mut self,
        buffer: &mut Buffer,
        _aux: &mut AuxiliaryBuffers,
        _context: &mut impl ProcessContext<Self>,
    ) -> ProcessStatus {
        // TODO: Implement your DSP here. This applies the example gain parameter; note that
        // the smoother is advanced once per frame so automation doesn't zipper.
        for mut frame in buffer.iter_samples() {
            let gain = self.params.gain.smoothed.next();
            for sample in frame.iter_mut() {
                *sample *= gain;
            }
        }
        ProcessStatus::Normal
    }
 }
 impl ClapPlugin for Kolmekivi {
    // Frozen identity: hosts key saved projects and presets off this. Never change it.
    const CLAP_ID: &'static str = "org.novoyuuparosk.kolmekivi";
    const CLAP_DESCRIPTION: Option<&'static str> = Some("Stereo delay with feedback and mix control");
    const CLAP_MANUAL_URL: Option<&'static str> = Some(Self::URL);
    const CLAP_SUPPORT_URL: Option<&'static str> = None;
    const CLAP_FEATURES: &'static [ClapFeature] =
        &[ClapFeature::AudioEffect, ClapFeature::Delay, ClapFeature::Stereo];
 }
 #[cfg(feature = "vst3")]
 impl Vst3Plugin for Kolmekivi {
    // Frozen identity, exactly 16 bytes. Never change it once distributed.
    const VST3_CLASS_ID: [u8; 16] = *b"KolmekiviDelay!!";
    const VST3_SUBCATEGORIES: &'static [Vst3SubCategory] =
        &[Vst3SubCategory::Fx, Vst3SubCategory::Delay];
 }
 nih_export_clap!(Kolmekivi);
 #[cfg(feature = "vst3")]
 nih_export_vst3!(Kolmekivi);
@@ -0,0 +1,355 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-3.0-or-later
 # brand-plugin.sh - rename this plugin, everywhere, in one go.
 #
 # check-branding.sh tells you what disagrees. This changes it. They share
 # branding.conf: this script rewrites that file and every copy of the old values
 # in tracked files, then runs the checker and reports what it says. A run that
 # ends with the checker green is a rename that landed.
 #
 # Dry run by default:
 #   sh brand-plugin.sh --display "Bari 206"
 #   sh brand-plugin.sh --display "Bari 206" --vendor Novoyuuparosk --apply
 #
 # Options:
 #   --display NAME    the product name, with spaces and capitals. Everything
 #                     else that can be derived, is derived from this.
 #   --pkg NAME        override the derived Cargo package name.
 #   --vendor NAME     --email ADDR    --homepage URL
 #   --description D   --clap-description D
 #   --struct NAME     override the derived Rust type name.
 #   --allow-identity-change   permit CLAP_ID / VST3_CLASS_ID to move. See below.
 #   --apply           actually write. Without it, nothing is modified.
 set -u
 # Resolve the repo root: these live in tools/, every path they touch is
 # repo-relative, and they must behave the same wherever they are invoked from.
 cd "$(dirname "$0")/.." || exit 1
 [ -f tools/branding.conf ] || { printf 'tools/branding.conf not found\n' >&2; exit 1; }
 # shellcheck disable=SC1091
 . ./tools/branding.conf
 OLD_PKG="$PKG"; OLD_DISPLAY="$DISPLAY"; OLD_PLUGIN_NAME="$PLUGIN_NAME"
 OLD_VENDOR="$VENDOR"; OLD_EMAIL="$EMAIL"; OLD_HOMEPAGE="$HOMEPAGE"; OLD_AUTHOR="$AUTHOR"
 OLD_DESCRIPTION="$DESCRIPTION"; OLD_CLAP_DESCRIPTION="$CLAP_DESCRIPTION"
 OLD_CLAP_ID="$CLAP_ID"; OLD_VST3="$VST3_CLASS_ID"
 OLD_STRUCT="$STRUCT"; OLD_PARAMS_STRUCT="$PARAMS_STRUCT"
 new_display=""; new_pkg=""; new_vendor=""; new_email=""; new_homepage=""
 new_description=""; new_clap_description=""; new_struct=""; new_author=""
 new_clap_id=""; new_vst3=""; apply=0; allow_identity=0
 while [ $# -gt 0 ]; do
  case "$1" in
    --display)           new_display="${2:?}"; shift 2 ;;
    --pkg)               new_pkg="${2:?}"; shift 2 ;;
    --vendor)            new_vendor="${2:?}"; shift 2 ;;
    --author)            new_author="${2:?}"; shift 2 ;;
    --email)             new_email="${2:?}"; shift 2 ;;
    --homepage)          new_homepage="${2:?}"; shift 2 ;;
    --description)       new_description="${2:?}"; shift 2 ;;
    --clap-description)  new_clap_description="${2:?}"; shift 2 ;;
    --struct)            new_struct="${2:?}"; shift 2 ;;
    --clap-id)           new_clap_id="${2:?}"; shift 2 ;;
    --vst3-class-id)     new_vst3="${2:?}"; shift 2 ;;
    --allow-identity-change) allow_identity=1; shift ;;
    --apply)             apply=1; shift ;;
    -h|--help)           sed -n '3,25p' "$0"; exit 0 ;;
    *) printf 'unknown option: %s\n' "$1" >&2; exit 2 ;;
  esac
 done
 # Interactive when nothing was passed and there is a terminal to ask at. Every
 # prompt offers the current value; Enter keeps it, so a run that answers nothing
 # is a no-op rather than a surprise. Optional fields additionally accept "-" to
 # clear them.
 ask() { # ask VARNAME PROMPT CURRENT
  printf '  %s [%s]: ' "$2" "$3" > /dev/tty
  IFS= read -r _reply < /dev/tty || _reply=""
  [ -n "$_reply" ] || _reply="$3"
  [ "$_reply" = "-" ] && _reply=""
  eval "$1=\$_reply"
 }
 if [ -z "$new_display" ] && [ -t 0 ] && [ -c /dev/tty ]; then
  printf 'branding this plugin - Enter keeps the current value, "-" clears an optional one\n\n'
  ask new_display          "display name    " "$OLD_DISPLAY"
  ask new_vendor           "vendor (org)    " "$OLD_VENDOR"
  ask new_author           "cargo author    " "$OLD_AUTHOR"
  ask new_email            "email           " "$OLD_EMAIL"
  ask new_homepage         "homepage        " "$OLD_HOMEPAGE"
  ask new_description      "cargo description" "$OLD_DESCRIPTION"
  ask new_clap_description "clap description" "$OLD_CLAP_DESCRIPTION"
  printf '\n'
 fi
 [ -n "$new_display" ] || { printf 'nothing to do: pass --display "New Name" (or run interactively)\n' >&2; exit 2; }
 # --- derivation -------------------------------------------------------------
 # Package name: lowercase, every run of non-alphanumerics becomes one separator,
 # ends trimmed. Cargo accepts both hyphens and underscores in a package name and
 # converts to underscores for the built artifact, which nih_plug_xtask already
 # accounts for; underscores are used here to match the Rust convention.
 derive_pkg() {
  printf '%s' "$1" | tr '[:upper:]' '[:lower:]' \
    | sed -e 's/[^a-z0-9]\{1,\}/_/g' -e 's/^_//' -e 's/_$//'
 }
 # Rust type name: CamelCase, non-alphanumerics dropped entirely.
 derive_struct() {
  printf '%s' "$1" | sed -e 's/[^A-Za-z0-9]\{1,\}/ /g' \
    | awk '{for(i=1;i<=NF;i++) printf "%s%s", toupper(substr($i,1,1)), substr($i,2); print ""}'
 }
 [ -n "$new_pkg" ]    || new_pkg=$(derive_pkg "$new_display")
 [ -n "$new_struct" ] || new_struct=$(derive_struct "$new_display")
 new_params_struct="${new_struct}Params"
 [ -n "$new_vendor" ]      || new_vendor="$OLD_VENDOR"
 [ -n "$new_author" ]      || new_author="$OLD_AUTHOR"
 [ -n "$new_email" ]       || new_email="$OLD_EMAIL"
 [ -n "$new_homepage" ]    || new_homepage="$OLD_HOMEPAGE"
 [ -n "$new_description" ] || new_description="$OLD_DESCRIPTION"
 [ -n "$new_clap_description" ] || new_clap_description="$OLD_CLAP_DESCRIPTION"
 # --- validation -------------------------------------------------------------
 fail=0
 die() { printf '  INVALID  %s\n' "$1"; fail=$((fail+1)); }
 case "$new_pkg" in
  "")        die "derived package name is empty" ;;
  [0-9]*)    die "package name \"$new_pkg\" starts with a digit - cargo rejects this outright" ;;
 esac
 case "$new_pkg" in
  test|core|std|alloc|proc_macro)
    die "package name \"$new_pkg\" collides with a built-in crate" ;;
  as|break|const|continue|crate|dyn|else|enum|extern|false|fn|for|if|impl|in|let|loop|match|mod|move|mut|pub|ref|return|self|static|struct|super|trait|true|type|unsafe|use|where|while|async|await|box|do|final|macro|override|priv|typeof|unsized|virtual|yield|try)
    die "package name \"$new_pkg\" is a Rust keyword - cargo rejects this" ;;
 esac
 # bundler.toml uses the package name as a TOML bare key.
 case "$new_pkg" in *[!a-zA-Z0-9_-]*) die "package name \"$new_pkg\" is not a valid TOML bare key" ;; esac
 case "$new_struct" in ""|[0-9]*) die "derived type name \"$new_struct\" is not a valid Rust identifier" ;; esac
 # --- frozen identity --------------------------------------------------------
 identity_note=""
 if [ -n "$new_clap_id" ] || [ -n "$new_vst3" ]; then
  if [ "$allow_identity" -eq 0 ]; then
    die "CLAP_ID / VST3_CLASS_ID are frozen identity; pass --allow-identity-change to move them"
  fi
 fi
 [ -n "$new_clap_id" ] || new_clap_id="$OLD_CLAP_ID"
 [ -n "$new_vst3" ]    || new_vst3="$OLD_VST3"
 # VST3_CLASS_ID is a fixed 16-byte array, so it cannot simply be derived. Propose
 # one from the new name and let a human decide - it is frozen the moment it ships.
 proposed_vst3=$(printf '%s' "${new_struct}Plugin000000000000" | cut -c1-16)
 n=$(printf '%s' "$new_vst3" | wc -c | tr -d ' ')
 [ "$n" -eq 16 ] || die "VST3_CLASS_ID \"$new_vst3\" is $n bytes, must be exactly 16"
 case "$new_clap_id" in
  *\ *|*[A-Z]*) die "CLAP_ID \"$new_clap_id\" must be lowercase with no spaces" ;;
  *.*) ;;
  *) die "CLAP_ID \"$new_clap_id\" should be dotted reverse-DNS" ;;
 esac
 # CLAP_DESCRIPTION is user-facing: keep development history out of it.
 for hist in "$CODENAME" "$OLD_DISPLAY" "$OLD_PKG"; do
  case "$new_clap_description" in
    *"$hist"*) die "CLAP_DESCRIPTION still mentions \"$hist\" - it is shown to users, who never knew the development name" ;;
  esac
 done
 # --- plan -------------------------------------------------------------------
 printf 'rename plan\n\n'
 row() { [ "$2" = "$3" ] && printf '  %-18s %s (unchanged)\n' "$1" "$2" || printf '  %-18s %s  ->  %s\n' "$1" "$2" "$3"; }
 row "package"        "$OLD_PKG"             "$new_pkg"
 row "display"        "$OLD_DISPLAY"         "$new_display"
 row "Plugin::NAME"   "$OLD_PLUGIN_NAME"     "$new_display"
 row "vendor"         "$OLD_VENDOR"          "$new_vendor"
 row "cargo author"   "$OLD_AUTHOR"          "$new_author"
 row "email"          "$OLD_EMAIL"           "$new_email"
 row "homepage"       "$OLD_HOMEPAGE"        "$new_homepage"
 row "description"    "$OLD_DESCRIPTION"     "$new_description"
 row "clap desc"      "$OLD_CLAP_DESCRIPTION" "$new_clap_description"
 row "struct"         "$OLD_STRUCT"          "$new_struct"
 row "params struct"  "$OLD_PARAMS_STRUCT"   "$new_params_struct"
 row "CLAP_ID"        "$OLD_CLAP_ID"         "$new_clap_id"
 row "VST3_CLASS_ID"  "$OLD_VST3"            "$new_vst3"
 printf '\n  repo codename stays %s - fixed at creation, never renamed\n' "$CODENAME"
 if [ "$new_vst3" = "$OLD_VST3" ]; then
  printf '  suggested VST3_CLASS_ID for this name (16 bytes): "%s"\n' "$proposed_vst3"
  printf '    apply with --vst3-class-id "%s" --allow-identity-change, and only before first release\n' "$proposed_vst3"
 fi
 if [ "$fail" -ne 0 ]; then
  printf '\n%d problem(s); nothing written.\n' "$fail"
  exit 1
 fi
 if [ "$apply" -eq 0 ]; then
  printf '\nDry run. Re-run with --apply to write these changes.\n'
  exit 0
 fi
 # --- apply ------------------------------------------------------------------
 # Three scratch files, one trap: the regenerated site table, the rows carried
 # through from the old one, and the value-substitution pairs.
 gen="$(mktemp)"; keep="$(mktemp)"; subst_file="$(mktemp)"
 trap 'rm -f "$gen" "$keep" "$subst_file"' EXIT
 T="$(printf '\t')"
 {
  printf 'req%spkg.cargo%sCargo.toml%sname = "%s"\n'            "$T" "$T" "$T" "$new_pkg"
  printf 'req%spkg.bundler%sbundler.toml%s[%s]\n'               "$T" "$T" "$T" "$new_pkg"
  printf 'opt%spkg.lock%sCargo.lock%sname = "%s"\n'             "$T" "$T" "$T" "$new_pkg"
  printf 'opt%spkg.ci%s.github/workflows/ci.yaml%scargo xtask bundle %s\n' "$T" "$T" "$T" "$new_pkg"
  printf 'opt%spkg.readme%sREADME.md%scargo xtask bundle %s\n'  "$T" "$T" "$T" "$new_pkg"
  printf 'req%sdisplay.bundler%sbundler.toml%sname = "%s"\n'    "$T" "$T" "$T" "$new_display"
  printf 'opt%sdisplay.notice%sNOTICE%s%s\n'                    "$T" "$T" "$T" "$new_display"
  printf 'req%sname.plugin%s%s%sconst NAME: &'"'"'static str = "%s"\n'        "$T" "$T" "$LIB_FILE" "$T" "$new_display"
  printf 'req%svendor.plugin%s%s%sconst VENDOR: &'"'"'static str = "%s"\n'    "$T" "$T" "$LIB_FILE" "$T" "$new_vendor"
  printf 'req%semail.plugin%s%s%sconst EMAIL: &'"'"'static str = "%s"\n'      "$T" "$T" "$LIB_FILE" "$T" "$new_email"
  printf 'req%sauthors.cargo%sCargo.toml%sauthors = ["%s <%s>"]\n' "$T" "$T" "$T" "$new_author" "$new_email"
  printf 'req%shomepage.cargo%sCargo.toml%shomepage = "%s"\n'   "$T" "$T" "$T" "$new_homepage"
  printf 'req%surl.plugin%s%s%sconst URL: &'"'"'static str = env!("CARGO_PKG_HOMEPAGE")\n' "$T" "$T" "$LIB_FILE" "$T"
  printf 'req%sdescription.cargo%sCargo.toml%sdescription = "%s"\n' "$T" "$T" "$T" "$new_description"
  # Narrowest distinctive fragment, not the whole statement: rustfmt wraps a long
  # CLAP_DESCRIPTION onto its own line, and a pattern spanning the assignment
  # would then never match a correctly formatted file.
  printf 'req%sdescription.clap%s%s%sSome("%s")\n' "$T" "$T" "$LIB_FILE" "$T" "$new_clap_description"
  printf 'req%sclapid.plugin%s%s%sconst CLAP_ID: &'"'"'static str = "%s"\n'  "$T" "$T" "$LIB_FILE" "$T" "$new_clap_id"
  printf 'req%svst3id.plugin%s%s%sconst VST3_CLASS_ID: [u8; 16] = *b"%s"\n'  "$T" "$T" "$LIB_FILE" "$T" "$new_vst3"
  printf 'req%sstruct.def%s%s%sstruct %s {\n'                   "$T" "$T" "$LIB_FILE" "$T" "$new_struct"
  printf 'req%sstruct.plugin%s%s%simpl Plugin for %s {\n'       "$T" "$T" "$LIB_FILE" "$T" "$new_struct"
  printf 'req%sstruct.clap%s%s%simpl ClapPlugin for %s {\n'     "$T" "$T" "$LIB_FILE" "$T" "$new_struct"
  printf 'req%sstruct.vst3%s%s%simpl Vst3Plugin for %s {\n'     "$T" "$T" "$LIB_FILE" "$T" "$new_struct"
  printf 'req%sstruct.exportclap%s%s%snih_export_clap!(%s);\n'  "$T" "$T" "$LIB_FILE" "$T" "$new_struct"
  printf 'req%sstruct.exportvst3%s%s%snih_export_vst3!(%s);\n'  "$T" "$T" "$LIB_FILE" "$T" "$new_struct"
  printf 'req%sparams.def%s%s%sstruct %s {\n'                   "$T" "$T" "$PARAMS_FILE" "$T" "$new_params_struct"
  printf 'req%sparams.default%s%s%simpl Default for %s {\n'     "$T" "$T" "$PARAMS_FILE" "$T" "$new_params_struct"
  printf 'req%sparams.field%s%s%sparams: Arc<%s>,\n'            "$T" "$T" "$LIB_FILE" "$T" "$new_params_struct"
  printf 'opt%sdeploy.pkg%sdeploy.ps1%s$Package = "%s"\n'       "$T" "$T" "$T" "$new_pkg"
  printf 'opt%sdeploy.vst3%sdeploy.ps1%s$vst3Name = "%s.vst3"\n' "$T" "$T" "$T" "$new_display"
  printf 'opt%sdeploy.clap%sdeploy.ps1%s$clapName = "%s.clap"\n' "$T" "$T" "$T" "$new_display"
 } > "$gen"
 # Pass 1 - site-directed. Each owned row in the existing table carries the OLD
 # resolved literal for its site; the regenerated row carries the new one. Rewriting
 # by that pair is unambiguous, which plain value substitution is not: AUTHOR
 # defaults to VENDOR, so both fields can hold the same old string and a global
 # replace cannot tell which occurrence belongs to which. This must run BEFORE
 # pass 2, or the global replace consumes the old literals first and leaves the
 # precise rewrite with nothing to match.
 sites="tools/branding-sites.tsv"
 T="$(printf '\t')"
 if [ -f "$sites" ]; then
  while IFS="$T" read -r ok_ oo_ of_ op_; do
    case "$ok_" in ''|\#*) continue ;; esac
    np_=$(awk -F"$T" -v o="$oo_" '$2==o {print $4; exit}' "$gen")
    [ -n "$np_" ] || continue
    [ "$np_" != "$op_" ] || continue
    [ -f "$of_" ] || continue
    esc_o=$(printf '%s' "$op_" | sed 's/[][\.*^$/|&]/\\&/g')
    esc_n=$(printf '%s' "$np_" | sed 's/[\\/&|]/\\&/g')
    tmp_=$(mktemp)
    sed "s|$esc_o|$esc_n|g" "$of_" > "$tmp_" && cat "$tmp_" > "$of_"
    rm -f "$tmp_"
  done < "$sites"
  printf '  pass 1: rewrote known sites from the table\n'
 fi
 # Pass 2 - value substitution, for everything the table does not enumerate:
 # doc comments, use sites in other modules, prose in the README.
 # Longest values first: a shorter spelling can be a substring of a longer one
 # (the package name inside a URL, say), and replacing it first would corrupt the
 # longer match. branding.conf is excluded and rewritten wholesale below, so its
 # STALE list is never rewritten into meaninglessness.
 {
  printf '%s\t%s\n' "$OLD_CLAP_ID" "$new_clap_id"
  printf '%s\t%s\n' "$OLD_HOMEPAGE" "$new_homepage"
  printf '%s\t%s\n' "$OLD_CLAP_DESCRIPTION" "$new_clap_description"
  printf '%s\t%s\n' "$OLD_DESCRIPTION" "$new_description"
  printf '%s\t%s\n' "$OLD_PARAMS_STRUCT" "$new_params_struct"
  printf '%s\t%s\n' "$OLD_VST3" "$new_vst3"
  printf '%s\t%s\n' "$OLD_PLUGIN_NAME" "$new_display"
  printf '%s\t%s\n' "$OLD_DISPLAY" "$new_display"
  printf '%s\t%s\n' "$OLD_STRUCT" "$new_struct"
  printf '%s\t%s\n' "$OLD_EMAIL" "$new_email"
  printf '%s\t%s\n' "$OLD_AUTHOR" "$new_author"
  printf '%s\t%s\n' "$OLD_VENDOR" "$new_vendor"
  printf '%s\t%s\n' "$OLD_PKG" "$new_pkg"
 } | awk -F'\t' '$1 != $2 { print length($1)"\t"$0 }' | sort -rn | cut -f2- > "$subst_file"
 changed=0
 git ls-files 2>/dev/null | while IFS= read -r f; do
  [ -f "$f" ] || continue
  # branding.conf alone is excluded: it is rewritten wholesale below, and its
  # STALE list names every retired spelling by design. The site table IS
  # substituted, so hand-added custom rows track the rename; owned rows are
  # regenerated afterwards regardless.
  case "$f" in tools/branding.conf) continue ;; esac
  before=$(cat "$f")
  after="$before"
  while IFS="$(printf '\t')" read -r old new; do
    [ -n "$old" ] || continue
    after=$(printf '%s' "$after" | sed "s|$(printf '%s' "$old" | sed 's/[][\.*^$/|&]/\\&/g')|$(printf '%s' "$new" | sed 's/[\\/&|]/\\&/g')|g")
  done < "$subst_file"
  if [ "$before" != "$after" ]; then printf '%s\n' "$after" > "$f"; printf '  rewrote %s\n' "$f"; fi
 done
 # branding.conf last, with the retired spellings appended to STALE so the next
 # run of the checker sweeps for anything this pass missed.
 # Deduplicated: two fields can retire to the same spelling - DISPLAY and
 # PLUGIN_NAME are commonly identical - and listing it twice makes the checker
 # report the same drift twice. Note that neither this script nor the checker
 # contains a branding literal anywhere: both read every name from
 # branding.conf, so a rename never has to rewrite its own tooling.
 retired=$(cut -f1 "$subst_file" | awk '!seen[$0]++')
 sed -e "s|^PKG=.*|PKG=\"$new_pkg\"|" \
    -e "s|^DISPLAY=.*|DISPLAY=\"$new_display\"|" \
    -e "s|^PLUGIN_NAME=.*|PLUGIN_NAME=\"$new_display\"|" \
    -e "s|^VENDOR=.*|VENDOR=\"$new_vendor\"|" \
    -e "s|^# *AUTHOR=.*|AUTHOR=\"$new_author\"|" \
    -e "s|^AUTHOR=.*|AUTHOR=\"$new_author\"|" \
    -e "s|^EMAIL=.*|EMAIL=\"$new_email\"|" \
    -e "s|^HOMEPAGE=.*|HOMEPAGE=\"$new_homepage\"|" \
    -e "s|^DESCRIPTION=.*|DESCRIPTION=\"$new_description\"|" \
    -e "s|^CLAP_DESCRIPTION=.*|CLAP_DESCRIPTION=\"$new_clap_description\"|" \
    -e "s|^CLAP_ID=.*|CLAP_ID=\"$new_clap_id\"|" \
    -e "s|^VST3_CLASS_ID=.*|VST3_CLASS_ID=\"$new_vst3\"|" \
    -e "s|^STRUCT=.*|STRUCT=\"$new_struct\"|" \
    -e "s|^PARAMS_STRUCT=.*|PARAMS_STRUCT=\"$new_params_struct\"|" \
    tools/branding.conf > tools/branding.conf.new
 if [ -n "$retired" ]; then
  { sed '$ s/"$//' tools/branding.conf.new; printf '%s"\n' "$retired"; } > tools/branding.conf
 else
  # Nothing retired (a no-op rename, or a regeneration): leave STALE untouched
  # rather than appending a blank line to it on every run.
  cat tools/branding.conf.new > tools/branding.conf
 fi
 rm -f tools/branding.conf.new
 if [ "$new_author" = "$new_vendor" ]; then
  # Identical to VENDOR, so re-comment it: the conf should keep showing that this
  # value derives rather than pinning a duplicate that then has to be maintained.
  tmp_c=$(mktemp)
  sed "s|^AUTHOR=.*|# AUTHOR=\"$new_author\"|" tools/branding.conf > "$tmp_c" && cat "$tmp_c" > tools/branding.conf
  rm -f "$tmp_c"
 fi
 printf '  rewrote tools/branding.conf (retired spellings appended to STALE)\n'
 # Regenerate the site table. Rows whose owner this script recognises are
 # rewritten with the new resolved literals; every other row - anything marked
 # custom, or added by hand for a file this template does not ship - is carried
 # through untouched. Clobbering those silently is how a tool stops being trusted.
 sites="tools/branding-sites.tsv"
 owned=$(cut -f2 "$gen")
 if [ -f "$sites" ]; then
  grep '^#' "$sites" > "$keep" 2>/dev/null || : > "$keep"
  while IFS="$T" read -r k o f pat; do
    case "$k" in ''|\#*) continue ;; esac
    printf '%s\n' "$owned" | grep -qxF "$o" || printf '%s%s%s%s%s%s%s\n' "$k" "$T" "$o" "$T" "$f" "$T" "$pat" >> "$keep"
  done < "$sites"
 else
  : > "$keep"
 fi
 { cat "$keep"; cat "$gen"; } > "$sites"
 printf '  rewrote %s (%s owned rows, %s preserved)\n' "$sites" "$(wc -l < "$gen" | tr -d ' ')" "$(grep -cv '^#' "$keep" 2>/dev/null || echo 0)"
 printf '\nverifying with check-branding.sh\n\n'
 sh tools/check-branding.sh
@@ -0,0 +1,45 @@
 # branding-sites.tsv - every place a canonical name has to appear, and in what form.
 #
 # Generated and refreshed by tools/brand-plugin.sh; read by tools/check-branding.sh,
 # which asserts each pattern is present in its file. Tab-separated, four columns:
 #
 #   kind    req = a missing file is a failure; opt = a missing file is a skip
 #   owner   the brand-plugin.sh rule that manages this row, or "custom" for rows
 #           you added by hand. Custom rows are preserved across regeneration;
 #           owned rows are overwritten, so do not hand-edit those.
 #   file    repo-relative path
 #   pattern literal text that must appear in that file, already resolved
 #
 # Adding a site for something the template does not ship is a one-line edit here
 # with owner "custom" - no shell to change, and it survives the next rename.
 #
 #kind	owner	file	pattern
 req	pkg.cargo	Cargo.toml	name = "kolmekivi"
 req	pkg.bundler	bundler.toml	[kolmekivi]
 opt	pkg.lock	Cargo.lock	name = "kolmekivi"
 opt	pkg.ci	.github/workflows/ci.yaml	cargo xtask bundle kolmekivi
 opt	pkg.readme	README.md	cargo xtask bundle kolmekivi
 req	display.bundler	bundler.toml	name = "Kolmekivi"
 opt	display.notice	NOTICE	Kolmekivi
 req	name.plugin	src/lib.rs	const NAME: &'static str = "Kolmekivi"
 req	vendor.plugin	src/lib.rs	const VENDOR: &'static str = "Novoyuuparosk"
 req	email.plugin	src/lib.rs	const EMAIL: &'static str = "mikkeli@novoyuuparosk.org"
 req	authors.cargo	Cargo.toml	authors = ["Mikkeli Matlock <mikkeli@novoyuuparosk.org>"]
 req	homepage.cargo	Cargo.toml	homepage = "http://192.168.2.199:3005/musiikki/kolmekivi"
 req	url.plugin	src/lib.rs	const URL: &'static str = env!("CARGO_PKG_HOMEPAGE")
 req	description.cargo	Cargo.toml	description = "A stereo delay/echo plugin built with NIH-plug"
 req	description.clap	src/lib.rs	Some("Stereo delay with feedback and mix control")
 req	clapid.plugin	src/lib.rs	const CLAP_ID: &'static str = "org.novoyuuparosk.kolmekivi"
 req	vst3id.plugin	src/lib.rs	const VST3_CLASS_ID: [u8; 16] = *b"KolmekiviDelay!!"
 req	struct.def	src/lib.rs	struct Kolmekivi {
 req	struct.plugin	src/lib.rs	impl Plugin for Kolmekivi {
 req	struct.clap	src/lib.rs	impl ClapPlugin for Kolmekivi {
 req	struct.vst3	src/lib.rs	impl Vst3Plugin for Kolmekivi {
 req	struct.exportclap	src/lib.rs	nih_export_clap!(Kolmekivi);
 req	struct.exportvst3	src/lib.rs	nih_export_vst3!(Kolmekivi);
 req	params.def	src/lib.rs	struct KolmekiviParams {
 req	params.default	src/lib.rs	impl Default for KolmekiviParams {
 req	params.field	src/lib.rs	params: Arc<KolmekiviParams>,
 opt	deploy.pkg	deploy.ps1	$Package = "kolmekivi"
 opt	deploy.vst3	deploy.ps1	$vst3Name = "Kolmekivi.vst3"
 opt	deploy.clap	deploy.ps1	$clapName = "Kolmekivi.clap"
@@ -0,0 +1,103 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 # branding.conf - this plugin's canonical identity.
 #
 # Managed by tools/brand-plugin.sh, read by tools/check-branding.sh. Hand-editing
 # works and is sometimes the quickest thing, but the helper is what keeps this
 # file, the source tree and tools/branding-sites.tsv agreeing with each other.
 # Edit here and you are on the hook for running the checker afterwards.
 # --- derivations ------------------------------------------------------------
 # Defined before the values so the defaults below can use them.
 # Package name: lowercased, every run of non-alphanumerics becomes one
 # underscore. Cargo accepts hyphens too and maps them to underscores for the
 # built artifact, which nih_plug_xtask already handles; underscores are used to
 # match the Rust convention.
 _derive_pkg() {
  printf '%s' "$1" | tr '[:upper:]' '[:lower:]' \
    | sed -e 's/[^a-z0-9]\{1,\}/_/g' -e 's/^_//' -e 's/_$//'
 }
 # Rust type name: CamelCase, non-alphanumerics dropped.
 _derive_struct() {
  printf '%s' "$1" | sed -e 's/[^A-Za-z0-9]\{1,\}/ /g' \
    | awk '{for(i=1;i<=NF;i++) printf "%s%s", toupper(substr($i,1,1)), substr($i,2); print ""}'
 }
 # --- the names ---------------------------------------------------------------
 PLUGIN_NAME="Kolmekivi"
 VENDOR="Novoyuuparosk"
 EMAIL="mikkeli@novoyuuparosk.org"
 # Cargo's authors entry names whoever wrote it, which is not always the vendor:
 # an org ships the plugin, a person authored it. Defaults to VENDOR when the two
 # are the same, which is the common case for a one-person project.
 AUTHOR="Mikkeli Matlock"
 HOMEPAGE="http://192.168.2.199:3005/musiikki/kolmekivi"
 DESCRIPTION="A stereo delay/echo plugin built with NIH-plug"
 # What the plugin does *now*. No codename, no "prototype", no "v2 rewrite" -
 # hosts show this to users who never knew any of that. check-branding.sh
 # enforces the mechanical half by rejecting retired names and the repo codename.
 CLAP_DESCRIPTION="Stereo delay with feedback and mix control"
 # --- frozen identity ---------------------------------------------------------
 # Hosts key saved projects and presets off these two. Change either and every
 # existing session silently loses the plugin: the track comes up empty, with no
 # error. Choose once before the first release, then never again.
 # brand-plugin.sh refuses to move them without --allow-identity-change.
 CLAP_ID="org.novoyuuparosk.kolmekivi"
 VST3_CLASS_ID="KolmekiviDelay!!"
 # --- fixed at repo creation --------------------------------------------------
 # The repository's own name. Deliberately NOT renamed when the plugin is: the
 # repo keeps its development codename while the plugin gets a product name.
 # Recorded only so it can be kept out of user-facing text.
 CODENAME="kolmekivi"
 # Where the two Rust types are defined. A plugin whose params outgrow lib.rs
 # points PARAMS_FILE at src/params.rs.
 LIB_FILE="src/lib.rs"
 PARAMS_FILE="src/lib.rs"
 # --- derived unless overridden -----------------------------------------------
 # Set one only when the derivation is wrong or rejected - a name like
 # "206 Prototype" derives to "206_prototype", which cargo refuses because a
 # package name cannot start with a digit.
 #
 # This template overrides three of them, which a real plugin usually will not:
 # its package and type names are the template's own rather than derived from a
 # product name. Delete these three lines after renaming and the derivations
 # from PLUGIN_NAME take over.
 # DISPLAY="Plugin Name"      # defaults to PLUGIN_NAME
 : "${AUTHOR:=$VENDOR}"
 : "${DISPLAY:=$PLUGIN_NAME}"
 : "${PKG:=$(_derive_pkg "$PLUGIN_NAME")}"
 : "${STRUCT:=$(_derive_struct "$PLUGIN_NAME")}"
 : "${PARAMS_STRUCT:=${STRUCT}Params}"
 # --- retired spellings -------------------------------------------------------
 # Must no longer appear in tracked files. An entry is skipped while it is still
 # part of a canonical value above and arms the moment it stops being one, so a
 # rename is self-checking in both directions. brand-plugin.sh appends here.
 STALE="nih_plug_template
 MyPlugin
 PluginParams
 A minimal NIH-plug audio plugin
 Your plugin description
 Plugin Name
 Your Name
 your@email.com
 com.your-domain.plugin-name
 Unique16CharId!!
 YOUR-USERNAME
 YOUR-PLUGIN-NAME
 your-domain
 https://github.com/YOUR-USERNAME/YOUR-PLUGIN-NAME
 A minimal NIH-plug audio plugin
 com.your-domain.plugin-name
 Your plugin description
 nih_plug_template
 Unique16CharId!!
 your@email.com
 PluginParams
 Plugin Name
 Your Name
 MyPlugin"
@@ -0,0 +1,188 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-3.0-or-later
 # check-branding.sh - verify the plugin's branding/identity strings agree everywhere.
 #
 # Plugin branding is duplicated across the build manifest, the bundler manifest,
 # the source, the docs and (once you add one) the deploy script. Nothing makes
 # them agree, so a rename drifts silently: the bundle builds under one name and
 # the deploy script looks for another. This asserts they match, and that the
 # identity constants are legal.
 #
 # In a template this matters more than usual: renaming is the first thing you do
 # with this repo, and it touches every file below. Run this immediately after,
 # and the STALE machinery will list whatever you missed.
 #
 # Usage: sh tools/check-branding.sh          (exit 0 = consistent, 1 = drift found)
 #
 # The canonical identity lives in branding.conf, shared with brand-plugin.sh.
 # Edit it there, then run this to find every copy that still holds the old value.
 set -u
 # Resolve the repo root: these live in tools/, every path they touch is
 # repo-relative, and they must behave the same wherever they are invoked from.
 cd "$(dirname "$0")/.." || exit 1
 if [ ! -f tools/branding.conf ]; then
  printf 'tools/branding.conf not found\n' >&2
  exit 1
 fi
 # shellcheck disable=SC1091
 . ./tools/branding.conf
 # Every canonical spelling concatenated, for the substring test below.
 CANONICAL_BLOB="$PKG
 $DESCRIPTION
 $CLAP_DESCRIPTION
 $STRUCT
 $PARAMS_STRUCT
 $DISPLAY
 $PLUGIN_NAME
 $VENDOR
 $EMAIL
 $HOMEPAGE
 $CLAP_ID
 $VST3_CLASS_ID"
 pass=0; fail=0; skip=0
 ok()   { pass=$((pass+1)); printf '  ok    %s\n' "$1"; }
 bad()  { fail=$((fail+1)); printf '  FAIL  %s\n' "$1"; [ $# -gt 1 ] && printf '        %s\n' "$2"; return 0; }
 note() { skip=$((skip+1)); printf '  skip  %s\n' "$1"; }
 # Reported for awareness only - never counted, never fails the run.
 info() { printf '  --    %s\n' "$1"; }
 # has FILE PATTERN -> fixed-string search
 has() { grep -qF "$2" "$1" 2>/dev/null; }
 check() { # check LABEL FILE LITERAL
  if [ ! -f "$2" ]; then bad "$1" "missing file: $2"; return; fi
  if has "$2" "$3"; then ok "$1"; else bad "$1" "$2 does not contain: $3"; fi
 }
 # Same as check, but a missing file is "not applicable yet" rather than drift.
 # The template ships without a deploy script; this starts checking once you add one.
 opt_check() { # opt_check LABEL FILE LITERAL
  if [ ! -f "$2" ]; then note "$1 ($2 not present)"; return; fi
  if has "$2" "$3"; then ok "$1"; else bad "$1" "$2 does not contain: $3"; fi
 }
 printf 'branding check (canonical: %s / "%s")\n\n' "$PKG" "$DISPLAY"
 # --- consistency: every site in the table holds its resolved literal ----------
 # The table is data, so adding a site is a row rather than a shell edit, and the
 # same script runs unmodified across every plugin built from this template.
 SITES="tools/branding-sites.tsv"
 if [ ! -f "$SITES" ]; then
  bad "site table" "$SITES not found - run tools/brand-plugin.sh to generate it"
 else
  printf 'sites\n'
  while IFS="$(printf '\t')" read -r kind owner file pattern; do
    case "$kind" in ''|\#*) continue ;; esac
    [ -n "$pattern" ] || continue
    label="$owner"
    if [ ! -f "$file" ]; then
      case "$kind" in
        opt) note "$label ($file not present)" ;;
        *)   bad  "$label" "missing file: $file" ;;
      esac
      continue
    fi
    if has "$file" "$pattern"; then ok "$label"
    else bad "$label" "$file does not contain: $pattern"; fi
  done < "$SITES"
 fi
 # --- validity: rules the table cannot express --------------------------------
 printf '\nvalidity\n'
 # VST3 class IDs are a fixed 16-byte array. A wrong length is a compile error,
 # but saying so here is clearer than reading rustc on it.
 n=$(printf '%s' "$VST3_CLASS_ID" | wc -c | tr -d ' ')
 if [ "$n" -eq 16 ]; then ok "VST3_CLASS_ID is 16 bytes"
 else bad "VST3_CLASS_ID is 16 bytes" "got $n bytes: \"$VST3_CLASS_ID\""; fi
 # CLAP IDs are reverse-DNS by convention and compared verbatim by hosts, so a
 # stray space or capital is a silent identity change between machines.
 case "$CLAP_ID" in
  *\ *|*[A-Z]*) bad "CLAP_ID is reverse-DNS safe" "no spaces or capitals allowed: \"$CLAP_ID\"" ;;
  *.*)          ok  "CLAP_ID is reverse-DNS safe" ;;
  *)            bad "CLAP_ID is reverse-DNS safe" "expected dotted reverse-DNS, got: \"$CLAP_ID\"" ;;
 esac
 # An overridden package name is legitimate - the derivation is sometimes invalid
 # - but a display rename that forgot the package is not, and looks identical
 # from here. Reported, never failed.
 derived_pkg=$(_derive_pkg "$PLUGIN_NAME")
 [ "$PKG" = "$derived_pkg" ] || info "PKG \"$PKG\" differs from the derivation of PLUGIN_NAME (\"$derived_pkg\") - fine if deliberate"
 # CLAP_DESCRIPTION is shown to users in a host's plugin browser. "Free of
 # development history" is a judgement a script cannot make, but the failure it
 # produces is mechanical: a retired name or the repo codename surviving in it.
 hygiene_hits=""
 while IFS= read -r s_entry; do
  [ -n "$s_entry" ] || continue
  case "$CANONICAL_BLOB" in *"$s_entry"*) continue ;; esac
  case "$CLAP_DESCRIPTION" in *"$s_entry"*) hygiene_hits="$hygiene_hits \"$s_entry\"" ;; esac
 done <<HYGIENE_LIST
 $STALE
 $CODENAME
 HYGIENE_LIST
 if [ -z "$hygiene_hits" ]; then ok "CLAP_DESCRIPTION carries no retired name or codename"
 else bad "CLAP_DESCRIPTION carries no retired name or codename" "found:$hygiene_hits"; fi
 printf '\nstale spellings\n'
 # File list for the scan below. Prefer git, so build output and any vendored
 # tree stay out of it. Fall back to find when this is not a checkout - an
 # exported tarball, or a CI step that fetched without git metadata - because
 # `git ls-files` there returns nothing, and an empty list would report every
 # stale spelling as absent. A check that passes hardest when it can see least
 # is worse than no check.
 if git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
  file_list() { git ls-files; }
  scan_source="git"
 else
  file_list() { find . -path ./.git -prune -o -path ./target -prune -o -type f -print | sed 's|^\./||'; }
  scan_source="find (not a git checkout)"
 fi
 info "scanning tracked files via $scan_source"
 # Fed by here-doc rather than a pipe on purpose: a piped `while` runs in a
 # subshell, and the pass/fail counters it increments would be discarded.
 while IFS= read -r s; do
  [ -n "$s" ] || continue
  # Still part of a canonical value? Then it is current branding, not a leftover.
  # This is what lets the list ship pre-seeded: entries arm themselves as you
  # rename. Substring, not equality, because placeholders nest - "your-domain"
  # lives inside the canonical CLAP_ID, and "YOUR-USERNAME" inside the homepage.
  # Over-skipping is the safe direction: a false FAIL on a name you still use
  # would train you to ignore this section.
  case "$CANONICAL_BLOB" in
    *"$s"*) note "\"$s\" (still canonical)"; continue ;;
  esac
  # These two name every retired spelling by definition - the STALE list lives in
  # branding.conf and this script reads it - so neither can ever be a real hit.
  hits=$(file_list 2>/dev/null | while read -r f; do
           case "$f" in tools/check-branding.sh|tools/branding.conf) continue ;; esac
           [ -f "$f" ] && grep -lF "$s" "$f" 2>/dev/null
         done)
  if [ -z "$hits" ]; then ok "no occurrences of \"$s\""
  else bad "no occurrences of \"$s\"" "still present in: $(echo "$hits" | tr '\n' ' ')"; fi
 done <<STALE_LIST
 $STALE
 STALE_LIST
 # Template scaffolding, not drift: TODOs are legitimate while you are still
 # building. Reported so a finished plugin does not quietly ship with them.
 # `grep -c` prints 0 AND exits 1 when there are no matches, so `|| echo 0`
 # would append a second zero and make the count unparseable. Swallow the
 # status instead, and default an empty result (missing file) to zero.
 todos=$(grep -c 'TODO' src/lib.rs 2>/dev/null || :)
 [ -n "$todos" ] || todos=0
 printf '\nscaffolding\n'
 if [ "$todos" -eq 0 ]; then ok "no TODO markers left in src/lib.rs"
 else info "$todos TODO marker(s) still in src/lib.rs (not a failure)"; fi
 printf '\n%d passed, %d failed' "$pass" "$fail"
 [ "$skip" -gt 0 ] && printf ', %d skipped' "$skip"
 printf '\n'
 [ "$fail" -eq 0 ] || exit 1
@@ -0,0 +1,8 @@
 [package]
 name = "xtask"
 version = "0.1.0"
 edition = "2021"
 license = "GPL-3.0-or-later"
 [dependencies]
 nih_plug_xtask = { git = "https://github.com/robbert-vdh/nih-plug.git", rev = "f36931f7af4646065488a9845d8f8c2f95252c23" }
@@ -0,0 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 fn main() -> nih_plug_xtask::Result<()> {
    nih_plug_xtask::main()
 }
		`@@ -0,0 +1,2 @@`
							`[alias]`
							`xtask = "run --package xtask --release --"`