chore: add LICENSE, README, CHANGELOG, and publish metadata

Add MIT license, README with usage/install instructions and hotkey
binding examples, CHANGELOG for v0.1.0, and complete Cargo.toml
metadata (repository, homepage, keywords, categories). Remove unused
niri-ipc dependency.

CHANGELOG.md

@@ -0,0 +1,16 @@
+# Changelog
+
+## 0.1.0 (2026-04-07)
+
+Initial release.
+
+### Features
+
+- GPU-rendered ring light overlay using wgpu/WGSL fragment shader
+- Rounded rectangle SDF with gaussian glow falloff
+- Full desktop input passthrough via dynamic `wl_region` cursor hole
+- Cursor avoidance with rounded-square soft fade
+- Color temperature support: presets (warm, cool, studio, daylight, golden) and custom Kelvin
+- Toggle on/off via PID lock file and SIGUSR1 signaling
+- Works on any wlroots-based Wayland compositor (Sway, Hyprland, niri, river, etc.)
+- MangoHUD suppression for clean Vulkan overlay

Cargo.lock

@@ -345,12 +345,6 @@ dependencies = [
  "hashbrown 0.16.1",
 ]
 
-[[package]]
-name = "itoa"
-version = "1.0.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
-
 [[package]]
 name = "jni-sys"
 version = "0.3.1"
@@ -498,16 +492,6 @@ dependencies = [
  "jni-sys 0.3.1",
 ]
 
-[[package]]
-name = "niri-ipc"
-version = "25.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12bd9eb4e437f5282ce853cf66837658379cb537b4b6bae687da59246005329a"
-dependencies = [
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "nix"
 version = "0.29.0"
@@ -747,7 +731,6 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bytemuck",
- "niri-ipc",
  "nix",
  "pollster",
  "raw-window-handle",
@@ -824,19 +807,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "serde_json"
-version = "1.0.149"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83fc039473c5595ace860d8c4fafa220ff474b3fc6bfdb4293327f1a37e94d86"
-dependencies = [
- "itoa",
- "memchr",
- "serde",
- "serde_core",
- "zmij",
-]
-
 [[package]]
 name = "shlex"
 version = "1.3.0"
@@ -1396,9 +1366,3 @@ dependencies = [
  "quote",
  "syn",
 ]
-
-[[package]]
-name = "zmij"
-version = "1.0.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"

Cargo.toml

@@ -2,14 +2,19 @@
 name = "ringa"
 version = "0.1.0"
 edition = "2021"
-description = "Wayland ring light overlay"
+license = "MIT"
+description = "GPU-rendered ring light overlay for Wayland"
+repository = "https://github.com/swaits/ringa"
+homepage = "https://github.com/swaits/ringa"
+readme = "README.md"
+keywords = ["wayland", "ring-light", "overlay", "wgpu", "camera"]
+categories = ["command-line-utilities", "multimedia"]
 authors = ["Stephen Waits <steve@waits.net>"]
 rust-version = "1.85"
 
 [dependencies]
 anyhow = "1.0"
 bytemuck = { version = "1", features = ["derive"] }
-niri-ipc = "25.11.0"
 nix = { version = "0.29", features = ["signal", "process", "poll"] }
 pollster = "0.4"
 raw-window-handle = "0.6"

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Stephen Waits
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,83 @@
+# ringa
+
+GPU-rendered ring light overlay for Wayland. Simulates a monitor-mounted ring light by drawing a bright glowing border around your screen during video calls.
+
+## Features
+
+- **GPU-rendered** via wgpu/WGSL fragment shader -- smooth gaussian glow, no banding
+- **Full desktop passthrough** -- clicks, scrolls, and keyboard input pass through to your desktop
+- **Cursor avoidance** -- the ring fades near your mouse so you can see and interact with UI elements
+- **Color temperature** -- pure white default, or warm/cool/custom Kelvin presets
+- **Toggle on/off** -- bind to a hotkey; running it again kills the existing instance
+- **Works on any wlroots-based Wayland compositor** (Sway, Hyprland, niri, river, etc.)
+
+## Install
+
+### From source
+
+```sh
+git clone https://github.com/swaits/ringa.git
+cd ringa
+cargo install --path .
+```
+
+### From crates.io
+
+```sh
+cargo install ringa
+```
+
+### With mise
+
+```sh
+mise use cargo:ringa
+```
+
+## Usage
+
+```sh
+# Pure white (default)
+ringa
+
+# Color temperature presets
+ringa warm       # 3200K tungsten
+ringa golden     # 2700K golden hour
+ringa studio     # 5000K neutral studio
+ringa daylight   # 5600K daylight balanced
+ringa cool       # 6500K cool daylight
+
+# Custom Kelvin (1000-40000)
+ringa 4200
+```
+
+Run it again to toggle off.
+
+### Hotkey binding
+
+Bind `ringa` to a key in your compositor config. Examples:
+
+**Sway / i3**
+```
+bindsym $mod+F12 exec ringa
+```
+
+**Hyprland**
+```
+bind = $mainMod, F12, exec, ringa
+```
+
+**niri**
+```kdl
+binds {
+    Mod+F12 { spawn "ringa"; }
+}
+```
+
+## Requirements
+
+- Wayland compositor with `wlr-layer-shell-unstable-v1` support
+- Vulkan-capable GPU
+
+## License
+
+[MIT](LICENSE)