From 3598b8409c96922efe776c9ca48518d605758480 Mon Sep 17 00:00:00 2001
From: Sreedev Kodichath <sreedev@icloud.com>
Date: Wed, 5 Aug 2026 11:13:43 +0200
Subject: [PATCH] [ADD] dynamonix: the program that a user starts

The program reads the arguments and starts the interface. It takes the
socket from the NIRI_SOCKET variable or from an argument.

The program gives three modes: the interface, a list of the outputs for
a script or a report of a fault, and a demonstration that uses the
compositor of the tests and therefore needs no niri and no second
monitor.

The list writes through a function that gives an error back. The usual
print macro stops the program when the reader closes the pipe, for
example a pipe into a command that reads the first lines only. The
program treats that condition as a normal end.

The program writes a log only when the DYNAMONIX_LOG variable gives a
path, because a log on the error output damages the interface.
---
 Cargo.lock                   | 1536 +++++++++++++++++++++++++++++++++-
 Cargo.toml                   |    1 +
 crates/dynamonix/Cargo.toml  |   28 +
 crates/dynamonix/src/main.rs |  156 ++++
 4 files changed, 1697 insertions(+), 24 deletions(-)
 create mode 100644 crates/dynamonix/Cargo.toml
 create mode 100644 crates/dynamonix/src/main.rs

diff --git a/Cargo.lock b/Cargo.lock
index 6038e83..02f9e97 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,45 +2,320 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "addr2line"
+version = "0.25.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b5d307320b3181d6d7954e663bd7c774a838b8220fe0593c86d9fb09f498b4b"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler2"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c982642fa9e8606056828ee9a8505737230110bb1099153c79efe865c59d12ba"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "allocator-api2"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
+
+[[package]]
+name = "anstream"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "824a212faf96e9acacdbd09febd34438f8f711fb84e09a8916013cd7815ca28d"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is_terminal_polyfill",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "940b3a0ca603d1eade50a4846a2afffd5ef57a9feac2c0e2ec2e14f9ead76000"
+
+[[package]]
+name = "anstyle-parse"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52ce7f38b242319f7cabaa6813055467063ecdc9d355bbb4ce0c68908cd8130e"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
+dependencies = [
+ "anstyle",
+ "once_cell_polyfill",
+ "windows-sys",
+]
+
+[[package]]
+name = "anyhow"
+version = "1.0.104"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470"
+
+[[package]]
+name = "approx"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cab112f0a86d568ea0e627cc1d6be74a1e9cd55214684db5561995f6dad897c6"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "atomic"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a89cbf775b137e9b968e67227ef7f775587cde3fd31b0d8599dbd0f598a48340"
+dependencies = [
+ "bytemuck",
+]
+
 [[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"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb531853791a215d7c62a30daf0dde835f381ab5de4589cfe7c649d2cbe92bd6"
+dependencies = [
+ "addr2line",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+ "windows-link",
+]
+
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
+[[package]]
+name = "bit-set"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0700ddab506f33b20a03b13996eccd309a48e5ff77d0d95926aa0210fb4e95f1"
+dependencies = [
+ "bit-vec 0.6.3",
+]
+
 [[package]]
 name = "bit-set"
 version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08807e080ed7f9d5433fa9b275196cfc35414f66a0c79d864dc51a0d825231a3"
 dependencies = [
- "bit-vec",
+ "bit-vec 0.8.0",
 ]
 
+[[package]]
+name = "bit-vec"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "349f9b6a179ed607305526ca489b34ad0a41aed5f7980fa90eb03160b69598fb"
+
 [[package]]
 name = "bit-vec"
 version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
 
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
 [[package]]
 name = "bitflags"
 version = "2.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b588b76d00fde79687d7646a9b5bdf3cc0f655e0bbd080335a95d7e96f3587da"
 
+[[package]]
+name = "block-buffer"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
+dependencies = [
+ "generic-array",
+]
+
+[[package]]
+name = "bumpalo"
+version = "3.20.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72f5acc6cb2ba439de613abc23857ec3d78374d8ed5ac84e9d11336e87da8649"
+
+[[package]]
+name = "by_address"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64fa3c856b712db6612c019f14756e64e4bcea13337a6b33b696333a9eaa2d06"
+
+[[package]]
+name = "bytemuck"
+version = "1.25.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95832e849adfb21180ccb6826a99da14e5d266ae5c2e668e1602cf234f153797"
+
 [[package]]
 name = "bytes"
 version = "1.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04"
 
+[[package]]
+name = "castaway"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dec551ab6e7578819132c713a93c022a05d60159dc86e7a7050223577484c55a"
+dependencies = [
+ "rustversion",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
+[[package]]
+name = "cfg_aliases"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f079e83a288787bcd14a6aea84cee5c87a67c5a3e660c30f557a3d24761b3527"
+
+[[package]]
+name = "clap"
+version = "4.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "301b56658598e48f3648647ac6fc887be7e7108eddfa4e9b63fcf3ec58c0cadf"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94a65403d1a1bd28f7dc68eb8506e8874808ee5eecb59298de588e2e1407a078"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
+version = "4.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d012d2b9d65aca7f18f4d9878a045bc17899bba951561ba5ec3c2ba1eed9a061"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn 3.0.3",
+]
+
+[[package]]
+name = "clap_lex"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8d4a3bb8b1e0c1050499d1815f5ab16d04f0959b233085fb31653fbfc9d98f9"
+
+[[package]]
+name = "color-eyre"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5920befb47832a6d61ee3a3a846565cfa39b331331e68a3b1d1116630f2f26d"
+dependencies = [
+ "backtrace",
+ "color-spantrace",
+ "eyre",
+ "indenter",
+ "once_cell",
+ "owo-colors",
+ "tracing-error",
+]
+
+[[package]]
+name = "color-spantrace"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8b88ea9df13354b55bc7234ebcce36e6ef896aca2e42a15de9e10edce01b427"
+dependencies = [
+ "once_cell",
+ "owo-colors",
+ "tracing-core",
+ "tracing-error",
+]
+
+[[package]]
+name = "colorchoice"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570"
+
+[[package]]
+name = "compact_str"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9dfdd1c2274d9aa354115b09dc9a901d6c5576818cdf70d14cae2bdb47df00ab"
+dependencies = [
+ "castaway",
+ "cfg-if",
+ "itoa",
+ "rustversion",
+ "ryu",
+ "static_assertions",
+]
+
 [[package]]
 name = "convert_case"
 version = "0.10.0"
@@ -50,13 +325,28 @@ dependencies = [
  "unicode-segmentation",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59ed5838eebb26a2bb2e58f6d5b5316989ae9d08bab10e0e6d103e656d1b0280"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "critical-section"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "790eea4361631c5e7d22598ecd5723ff611904e3344ce8720784c93e3d83d40b"
+
 [[package]]
 name = "crossterm"
 version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d8b9f2e4c67f833b660cdb0a3523065869fb35570177239812ed4c905aeff87b"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.1",
  "crossterm_winapi",
  "derive_more",
  "document-features",
@@ -78,6 +368,72 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "crypto-common"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78c8292055d1c1df0cce5d180393dc8cce0abec0a7102adb6c7b1eef6016d60a"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
+[[package]]
+name = "csscolorparser"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb2a7d3066da2de787b7f032c736763eb7ae5d355f81a68bab2675a96008b0bf"
+dependencies = [
+ "lab",
+ "phf",
+]
+
+[[package]]
+name = "darling"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88490bf1b990d87eaaa7ac8aa887f629a08e7359765b4911faf63c3763347d23"
+dependencies = [
+ "darling_core",
+ "darling_macro",
+]
+
+[[package]]
+name = "darling_core"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "084e274f91c482280130e1e34e0b8d6e66776a060d7b6de7b84289ca778868c4"
+dependencies = [
+ "ident_case",
+ "proc-macro2",
+ "quote",
+ "strsim",
+ "syn 3.0.3",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68f5792fa0d41cd2325ce0ffa64f0a340eaebd4971a3a0c5e1ffd2cc488a355e"
+dependencies = [
+ "darling_core",
+ "quote",
+ "syn 3.0.3",
+]
+
+[[package]]
+name = "deltae"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5729f5117e208430e437df2f4843f5e5952997175992d1414f94c57d61e270b4"
+
+[[package]]
+name = "deranged"
+version = "0.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7cd812cc2bc1d69d4764bd80df88b4317eaef9e773c75226407d9bc0876b211c"
+
 [[package]]
 name = "derive_more"
 version = "2.1.1"
@@ -100,6 +456,16 @@ dependencies = [
  "syn 2.0.119",
 ]
 
+[[package]]
+name = "digest"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
+dependencies = [
+ "block-buffer",
+ "crypto-common",
+]
+
 [[package]]
 name = "document-features"
 version = "0.2.12"
@@ -109,6 +475,22 @@ dependencies = [
  "litrs",
 ]
 
+[[package]]
+name = "dynamonix"
+version = "0.1.0"
+dependencies = [
+ "clap",
+ "color-eyre",
+ "dynamonix-geom",
+ "dynamonix-ipc",
+ "dynamonix-model",
+ "dynamonix-plan",
+ "dynamonix-tui",
+ "niri-ipc",
+ "tokio",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "dynamonix-geom"
 version = "0.1.0"
@@ -127,7 +509,7 @@ dependencies = [
  "dynamonix-plan",
  "niri-ipc",
  "serde_json",
- "thiserror",
+ "thiserror 2.0.19",
  "tokio",
 ]
 
@@ -140,7 +522,7 @@ dependencies = [
  "proptest",
  "serde",
  "serde_json",
- "thiserror",
+ "thiserror 2.0.19",
 ]
 
 [[package]]
@@ -163,8 +545,17 @@ dependencies = [
  "dynamonix-model",
  "dynamonix-plan",
  "niri-ipc",
+ "ratatui",
+ "thiserror 2.0.19",
+ "tokio",
 ]
 
+[[package]]
+name = "either"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e5e8f6c15a24b9a3ee5efec809ccd006d3b30e8b3bb63c39af737c7f87daa1d"
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -190,12 +581,55 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "eyre"
+version = "0.6.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7cd915d99f24784cdc19fd37ef22b97e3ff0ae756c7e492e9fbfe897d61e2aec"
+dependencies = [
+ "indenter",
+ "once_cell",
+]
+
+[[package]]
+name = "fancy-regex"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b95f7c0680e4142284cf8b22c14a476e87d61b004a3a0861872b32ef7ead40a2"
+dependencies = [
+ "bit-set 0.5.3",
+ "regex",
+]
+
 [[package]]
 name = "fastrand"
 version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "da7c62ceae207dd37ea5b845da6a0696c799f85e97da1ab5b7910be3c1c80223"
 
+[[package]]
+name = "filedescriptor"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e40758ed24c9b2eeb76c35fb0aebc66c626084edd827e07e1552279814c6682d"
+dependencies = [
+ "libc",
+ "thiserror 1.0.69",
+ "winapi",
+]
+
+[[package]]
+name = "finl_unicode"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9844ddc3a6e533d62bba727eb6c28b5d360921d5175e9ff0f1e621a5c590a4d5"
+
+[[package]]
+name = "fixedbitset"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
+
 [[package]]
 name = "fixedbitset"
 version = "0.5.7"
@@ -214,12 +648,46 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
 
+[[package]]
+name = "foldhash"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77ce24cb58228fbb8aa041425bb1050850ac19177686ea6e0f41a70416f56fdb"
+
 [[package]]
 name = "futures-core"
 version = "0.3.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2cd50c473c80f6d7c3670a752354b8e569b1a7cbfdc0419ec88e5edad85e0dc7"
 
+[[package]]
+name = "futures-task"
+version = "0.3.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b231ed28831efb4a61a08580c4bc233ec56bc009f4cd8f52da2c3cb97df0c109"
+
+[[package]]
+name = "futures-util"
+version = "0.3.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a77a90a256fce34da66415271e30f94ee91c57b04b8a2c042d9cf3220179deaa"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "pin-project-lite",
+ "slab",
+]
+
+[[package]]
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+dependencies = [
+ "typenum",
+ "version_check",
+]
+
 [[package]]
 name = "getrandom"
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@@ -243,13 +711,30 @@ dependencies = [
  "r-efi 6.0.0",
 ]
 
+[[package]]
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+version = "0.32.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e629b9b98ef3dd8afe6ca2bd0f89306cec16d43d907889945bc5d6687f2f13c7"
+
 [[package]]
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 checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 dependencies = [
- "foldhash",
+ "foldhash 0.1.5",
+]
+
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+dependencies = [
+ "allocator-api2",
+ "equivalent",
+ "foldhash 0.2.0",
 ]
 
 [[package]]
@@ -257,22 +742,122 @@ name = "hashbrown"
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 checksum = "ed5909b6e89a2db4456e54cd5f673791d7eca6732202bbf2a9cc504fe2f9b84a"
+dependencies = [
+ "allocator-api2",
+ "equivalent",
+ "foldhash 0.2.0",
+]
+
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+
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+
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+
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+ "darling",
+ "indoc",
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+ "quote",
+ "syn 3.0.3",
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+
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+ "either",
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+
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+dependencies = [
+ "cfg-if",
+ "futures-util",
+ "wasm-bindgen",
+]
 
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+name = "kasuari"
+version = "0.4.12"
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-checksum = "d466e9454f08e4a911e14806c24e16fba1b4c121d1ea474396f396069cf949d9"
+checksum = "bde5057d6143cc94e861d90f591b9303d6716c6b9602309150bd068853c10899"
 dependencies = [
- "equivalent",
- "hashbrown 0.17.1",
+ "hashbrown 0.16.1",
+ "portable-atomic",
+ "thiserror 2.0.19",
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 [[package]]
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-version = "1.0.18"
+name = "lab"
+version = "0.11.0"
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-checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
+checksum = "bf36173d4167ed999940f804952e6b08197cae5ad5d572eb4db150ce8ad5d58f"
+
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+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
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@@ -280,6 +865,21 @@ version = "0.2.189"
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 checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2"
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
+
+[[package]]
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+checksum = "e752191d037c44ad111a8caa762921926658402f01cc1253f7bef2020ece4f5e"
+dependencies = [
+ "bitflags 2.13.1",
+]
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.12.1"
@@ -307,12 +907,70 @@ version = "0.4.33"
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 checksum = "0ceec5bc11778974d1bcb055b18002eba7f4b3518b6a0081b3af5f21666da9ad"
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d2f2f9b4ba7e6b24d95e7e899329d35be83bcded72c8540cdd5368932d1d90a"
+dependencies = [
+ "hashbrown 0.17.1",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0aeb26bf5e836cc1c341c8106051b573f1766dfa05aa87f0b98be5e51b02303"
+dependencies = [
+ "nix",
+ "winapi",
+]
+
+[[package]]
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+checksum = "d1525a2a28c7f4fa0fc98bb91ae755d1e2d1505079e05539e35bc876b5d65ae9"
+dependencies = [
+ "regex-automata",
+]
+
 [[package]]
 name = "memchr"
 version = "2.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
+[[package]]
+name = "memmem"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a64a92489e2744ce060c349162be1c5f33c6969234104dbd99ddb5feb08b8c15"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "488016bfae457b036d996092f6cb448677611ce4449e970ceaf42695203f218a"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "minimal-lexical"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
+
+[[package]]
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+checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
+dependencies = [
+ "adler2",
+]
+
 [[package]]
 name = "mio"
 version = "1.2.2"
@@ -335,6 +993,55 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "nix"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "71e2746dc3a24dd78b3cfcb7be93368c6de9963d30f43a6a73998a9cf4b17b46"
+dependencies = [
+ "bitflags 2.13.1",
+ "cfg-if",
+ "cfg_aliases",
+ "libc",
+ "memoffset",
+]
+
+[[package]]
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+checksum = "d273983c5a657a70a3e8f2a01329822f3b8c8172b73826411a55751e404a0a4a"
+dependencies = [
+ "memchr",
+ "minimal-lexical",
+]
+
+[[package]]
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+checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "521739c6d2bac4aa25192232afe6841231376b2b26d4d9fae5ecf8ca5772e441"
+
+[[package]]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -344,12 +1051,84 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "num_threads"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c7398b9c8b70908f6371f47ed36737907c87c52af34c268fed0bf0ceb92ead9"
+dependencies = [
+ "libc",
+]
+
+[[package]]
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+checksum = "ff76201f031d8863c38aa7f905eca4f53abbfa15f609db4277d44cd8938f33fe"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
+
+[[package]]
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+checksum = "7bb71e1b3fa6ca1c61f383464aaf2bb0e2f8e772a1f01d486832464de363b951"
+dependencies = [
+ "num-traits",
+]
+
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+checksum = "d211803b9b6b570f68772237e415a029d5a50c65d382910b879fb19d3271f94d"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ddeed8580d347d2abf3dcf06a5f0b3dc020258338526b277847cd4248a70fc64"
+dependencies = [
+ "approx",
+ "libm",
+ "palette_derive",
+ "palette_math",
+]
+
+[[package]]
+name = "palette_derive"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88537020289b719d81be994ccf1bbf4990f477e2f69ee52fe3e45f43a02e56be"
+dependencies = [
+ "by_address",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e6eb142958d64335fb0e345c5b9ead2ecd6fc438c307e9d7d3c4fd428dbaf12"
+dependencies = [
+ "libm",
+]
+
 [[package]]
 name = "parking_lot"
 version = "0.12.5"
@@ -373,23 +1152,129 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "pest"
+version = "2.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7df728be843c7070fab6ab7c328c4e9e9d78e23bf749c0669c86ee7ebfa050a2"
+dependencies = [
+ "memchr",
+ "ucd-trie",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e2dd6fc3b26b3462ee188aac870f5a41d398f1cd5e2408d16531bd71c9591fd"
+dependencies = [
+ "pest",
+ "pest_generator",
+]
+
+[[package]]
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+dependencies = [
+ "pest",
+ "pest_meta",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85abd351c0de1e8384fc791a0737111a350394937e92b956b743dac12429f57c"
+dependencies = [
+ "pest",
+]
+
 [[package]]
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 version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8701b58ea97060d5e5b155d383a69952a60943f0e6dfe30b04c287beb0b27455"
 dependencies = [
- "fixedbitset",
+ "fixedbitset 0.5.7",
  "hashbrown 0.15.5",
  "indexmap",
 ]
 
+[[package]]
+name = "phf"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd6780a80ae0c52cc120a26a1a42c1ae51b247a253e4e06113d23d2c2edd078"
+dependencies = [
+ "phf_macros",
+ "phf_shared",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aef8048c789fa5e851558d709946d6d79a8ff88c0440c587967f8e94bfb1216a"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
+dependencies = [
+ "phf_shared",
+ "rand 0.8.7",
+]
+
+[[package]]
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+checksum = "f84ac04429c13a7ff43785d75ad27569f2951ce0ffd30a3321230db2fc727216"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
+name = "phf_shared"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67eabc2ef2a60eb7faa00097bd1ffdb5bd28e62bf39990626a582201b7a754e5"
+dependencies = [
+ "siphasher",
+]
+
 [[package]]
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 version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"
 
+[[package]]
+name = "portable-atomic"
+version = "1.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d20d5497ef88037a52ff98267d066e7f11fcc5e99bbfbd58a42336193aacec3"
+
+[[package]]
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+checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.21"
@@ -414,11 +1299,11 @@ version = "1.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4b45fcc2344c680f5025fe57779faef368840d0bd1f42f216291f0dc4ace4744"
 dependencies = [
- "bit-set",
- "bit-vec",
- "bitflags",
+ "bit-set 0.8.0",
+ "bit-vec 0.8.0",
+ "bitflags 2.13.1",
  "num-traits",
- "rand",
+ "rand 0.9.5",
  "rand_chacha",
  "rand_xorshift",
  "regex-syntax",
@@ -454,6 +1339,15 @@ version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
+[[package]]
+name = "rand"
+version = "0.8.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22f6172bdec972074665ed81ed53b71da00bfc44b65a753cfde883ec4c702a1a"
+dependencies = [
+ "rand_core 0.6.4",
+]
+
 [[package]]
 name = "rand"
 version = "0.9.5"
@@ -461,7 +1355,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9ef1d0d795eb7d84685bca4f72f3649f064e6641543d3a8c415898726a57b41"
 dependencies = [
  "rand_chacha",
- "rand_core",
+ "rand_core 0.9.5",
 ]
 
 [[package]]
@@ -471,9 +1365,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.9.5",
 ]
 
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+
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- "rand_core",
+ "rand_core 0.9.5",
+]
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+dependencies = [
+ "instability",
+ "ratatui-core",
+ "ratatui-crossterm",
+ "ratatui-macros",
+ "ratatui-termina",
+ "ratatui-termwiz",
+ "ratatui-widgets",
+ "serde",
+]
+
+[[package]]
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+dependencies = [
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+ "compact_str",
+ "critical-section",
+ "hashbrown 0.17.1",
+ "itertools",
+ "kasuari",
+ "lru",
+ "palette",
+ "serde",
+ "strum",
+ "thiserror 2.0.19",
+ "unicode-segmentation",
+ "unicode-truncate",
+ "unicode-width",
+]
+
+[[package]]
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+dependencies = [
+ "cfg-if",
+ "crossterm",
+ "instability",
+ "ratatui-core",
+]
+
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+checksum = "ed7dc68daa7498a43e4d68e0eb078427e10c38fbcfbb1e42d955f1fa2140d814"
+dependencies = [
+ "ratatui-core",
+ "ratatui-widgets",
+]
+
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+dependencies = [
+ "instability",
+ "ratatui-core",
+ "termina",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "faf03e0380b7744054d6cb74224fe3adf062a029754933f575ca1e3b4c2ce977"
+dependencies = [
+ "ratatui-core",
+ "termwiz",
+]
+
+[[package]]
+name = "ratatui-widgets"
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+checksum = "66e3d19bcc9130ca376277d93b60767ff121ace3be06f5f95f81dd68956407d1"
+dependencies = [
+ "bitflags 2.13.1",
+ "hashbrown 0.17.1",
+ "indoc",
+ "instability",
+ "itertools",
+ "line-clipping",
+ "ratatui-core",
+ "serde",
+ "strum",
+ "time",
+ "unicode-segmentation",
+ "unicode-width",
 ]
 
 [[package]]
@@ -498,7 +1499,30 @@ version = "0.5.18"
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 checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.1",
+]
+
+[[package]]
+name = "regex"
+version = "1.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f020237b6c8eed93db2e2cb53c00c60a8e1bc73da7d073199a1180401450218d"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad8553b9b26413251cbf30e620595c7a41b3887f03da04579c0e6b0d6a06b4b2"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
 ]
 
 [[package]]
@@ -507,6 +1531,12 @@ version = "0.8.11"
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 checksum = "d6f6ff9a378485b298a5286656da665ba74413d36db0979633275d2e708145d4"
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b74b56ffa8bb2830709a538c2cbcae9aa062db0d2a42563bfb09bdaae44020eb"
+
 [[package]]
 name = "rustc_version"
 version = "0.4.1"
@@ -522,13 +1552,19 @@ version = "1.1.4"
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 checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.1",
  "errno",
  "libc",
  "linux-raw-sys",
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf54715a573b99ac80df0bc206da022bcd442c974952c7b9720069370852e21f"
+
 [[package]]
 name = "rusty-fork"
 version = "0.3.1"
@@ -541,6 +1577,12 @@ dependencies = [
  "wait-timeout",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"
+
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -596,6 +1638,26 @@ dependencies = [
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 ]
 
+[[package]]
+name = "sha2"
+version = "0.10.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "signal-hook"
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@@ -627,6 +1689,18 @@ dependencies = [
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 ]
 
+[[package]]
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+version = "1.0.3"
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+checksum = "8ee5873ec9cce0195efcb7a4e9507a04cd49aec9c83d0389df45b1ef7ba2e649"
+
+[[package]]
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+checksum = "0c790de23124f9ab44544d7ac05d60440adc586479ce501c1d6d7da3cd8c9cf5"
+
 [[package]]
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@@ -643,6 +1717,50 @@ dependencies = [
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 ]
 
+[[package]]
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+
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+
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+dependencies = [
+ "strum_macros",
+]
+
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+dependencies = [
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+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
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@@ -678,13 +1796,109 @@ dependencies = [
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 ]
 
+[[package]]
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+ "fixedbitset 0.4.2",
+ "hex",
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+ "libc",
+ "log",
+ "memmem",
+ "nix",
+ "num-derive",
+ "num-traits",
+ "ordered-float",
+ "pest",
+ "pest_derive",
+ "phf",
+ "sha2",
+ "signal-hook",
+ "siphasher",
+ "terminfo",
+ "termios",
+ "thiserror 1.0.69",
+ "ucd-trie",
+ "unicode-segmentation",
+ "vtparse",
+ "wezterm-bidi",
+ "wezterm-blob-leases",
+ "wezterm-color-types",
+ "wezterm-dynamic",
+ "wezterm-input-types",
+ "winapi",
+]
+
+[[package]]
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+dependencies = [
+ "thiserror-impl 1.0.69",
+]
+
 [[package]]
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 dependencies = [
- "thiserror-impl",
+ "thiserror-impl 2.0.19",
+]
+
+[[package]]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -698,6 +1912,36 @@ dependencies = [
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 ]
 
+[[package]]
+name = "thread_local"
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+checksum = "1ad99c4c6d32803332c548b1af0540b357b3f5fc0be8f6c6bfe8b2e6ae784070"
+dependencies = [
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+]
+
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+dependencies = [
+ "deranged",
+ "libc",
+ "num-conv",
+ "num_threads",
+ "powerfmt",
+ "serde_core",
+ "time-core",
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+
+[[package]]
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+
 [[package]]
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@@ -724,6 +1968,77 @@ dependencies = [
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 ]
 
+[[package]]
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+dependencies = [
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+ "tracing-core",
+]
+
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+dependencies = [
+ "once_cell",
+ "valuable",
+]
+
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+dependencies = [
+ "tracing",
+ "tracing-subscriber",
+]
+
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+ "once_cell",
+ "tracing-core",
+]
+
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+dependencies = [
+ "matchers",
+ "nu-ansi-term",
+ "once_cell",
+ "regex-automata",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing",
+ "tracing-core",
+ "tracing-log",
+]
+
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+
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+
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@@ -742,6 +2057,62 @@ version = "1.13.3"
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 checksum = "c6f5d3c3b1bf09027a88a6bc961fc00497d651009560b5463668dc81b0fa87a8"
 
+[[package]]
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+
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+dependencies = [
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+ "getrandom 0.4.3",
+ "js-sys",
+ "wasm-bindgen",
+]
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+
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+
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+dependencies = [
+ "utf8parse",
+]
+
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@@ -766,6 +2137,123 @@ dependencies = [
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+[[package]]
+name = "wasm-bindgen"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "rustversion",
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+
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+[[package]]
+name = "wezterm-color-types"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7de81ef35c9010270d63772bebef2f2d6d1f2d20a983d27505ac850b8c4b4296"
+dependencies = [
+ "csscolorparser",
+ "deltae",
+ "lazy_static",
+ "wezterm-dynamic",
+]
+
+[[package]]
+name = "wezterm-dynamic"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f2ab60e120fd6eaa68d9567f3226e876684639d22a4219b313ff69ec0ccd5ac"
+dependencies = [
+ "log",
+ "ordered-float",
+ "strsim",
+ "thiserror 1.0.69",
+ "wezterm-dynamic-derive",
+]
+
+[[package]]
+name = "wezterm-dynamic-derive"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46c0cf2d539c645b448eaffec9ec494b8b19bd5077d9e58cb1ae7efece8d575b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
+[[package]]
+name = "wezterm-input-types"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7012add459f951456ec9d6c7e6fc340b1ce15d6fc9629f8c42853412c029e57e"
+dependencies = [
+ "bitflags 1.3.2",
+ "euclid",
+ "lazy_static",
+ "serde",
+ "wezterm-dynamic",
+]
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
diff --git a/Cargo.toml b/Cargo.toml
index af5b328..cd9a8f0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,6 +6,7 @@ members = [
     "crates/dynamonix-plan",
     "crates/dynamonix-ipc",
     "crates/dynamonix-tui",
+    "crates/dynamonix",
 ]
 
 [workspace.package]
diff --git a/crates/dynamonix/Cargo.toml b/crates/dynamonix/Cargo.toml
new file mode 100644
index 0000000..8a14f24
--- /dev/null
+++ b/crates/dynamonix/Cargo.toml
@@ -0,0 +1,28 @@
+[package]
+name = "dynamonix"
+description = "A terminal program that arranges the monitors of the niri compositor."
+version.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+license.workspace = true
+repository.workspace = true
+authors.workspace = true
+
+[[bin]]
+name = "dynamonix"
+path = "src/main.rs"
+
+[dependencies]
+dynamonix-geom.workspace = true
+dynamonix-ipc.workspace = true
+dynamonix-model.workspace = true
+dynamonix-plan.workspace = true
+dynamonix-tui.workspace = true
+niri-ipc.workspace = true
+clap.workspace = true
+color-eyre.workspace = true
+tokio = { workspace = true, features = ["rt-multi-thread", "macros"] }
+tracing-subscriber.workspace = true
+
+[lints]
+workspace = true
diff --git a/crates/dynamonix/src/main.rs b/crates/dynamonix/src/main.rs
new file mode 100644
index 0000000..31e7e8e
--- /dev/null
+++ b/crates/dynamonix/src/main.rs
@@ -0,0 +1,156 @@
+//! A terminal program that arranges the monitors of the niri compositor.
+//!
+//! The program speaks to the compositor only through its socket. It does not
+//! read a configuration file and it does not write a configuration file. The
+//! compositor keeps the changes until the configuration file changes, or until
+//! the compositor stops.
+
+use std::io::Write;
+use std::path::PathBuf;
+use std::time::Duration;
+
+use clap::{Parser, Subcommand};
+use color_eyre::eyre::{Context, Result};
+use dynamonix_ipc::fake::{FakeCompositor, sample_desk};
+use dynamonix_ipc::{Client, WatchConfig, socket_path};
+use dynamonix_model::{ModeExt, OutputExt, TransformExt};
+use dynamonix_tui::run::Options;
+
+#[derive(Debug, Parser)]
+#[command(name = "dynamonix", version, about, long_about = None)]
+struct Arguments {
+    /// The path of the socket of the compositor.
+    #[arg(long, value_name = "PATH")]
+    socket: Option<PathBuf>,
+
+    /// Start a compositor of the program and show three monitors of a sample.
+    #[arg(long)]
+    demo: bool,
+
+    /// The time in milliseconds between two examinations of the outputs.
+    #[arg(long, value_name = "MILLISECONDS", default_value_t = 1500)]
+    interval: u64,
+
+    #[command(subcommand)]
+    command: Option<Job>,
+}
+
+#[derive(Debug, Subcommand)]
+enum Job {
+    /// Show the outputs and stop.
+    List,
+}
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    color_eyre::install()?;
+    start_logging();
+
+    let arguments = Arguments::parse();
+    let demo = arguments
+        .demo
+        .then(|| FakeCompositor::start(sample_desk()))
+        .transpose()
+        .context("cannot start the compositor of the program")?;
+
+    let socket = match (&demo, &arguments.socket) {
+        (Some(fake), _) => fake.path().to_path_buf(),
+        (None, Some(path)) => path.clone(),
+        (None, None) => socket_path().context("cannot find the socket of the compositor")?,
+    };
+
+    match arguments.command {
+        Some(Job::List) => list(socket).await,
+        None => {
+            let options = Options {
+                socket,
+                watch: WatchConfig {
+                    interval: Duration::from_millis(arguments.interval),
+                    ..WatchConfig::default()
+                },
+            };
+            dynamonix_tui::run(options)
+                .await
+                .context("the interface stopped with an error")
+        }
+    }
+}
+
+fn start_logging() {
+    let Ok(path) = std::env::var("DYNAMONIX_LOG") else {
+        return;
+    };
+    let Ok(file) = std::fs::File::create(path) else {
+        return;
+    };
+    let _ = tracing_subscriber::fmt()
+        .with_writer(file)
+        .with_env_filter(
+            tracing_subscriber::EnvFilter::try_from_default_env()
+                .unwrap_or_else(|_| tracing_subscriber::EnvFilter::new("info")),
+        )
+        .try_init();
+}
+
+async fn list(socket: PathBuf) -> Result<()> {
+    let mut client = Client::connect_to(&socket)
+        .await
+        .context("cannot connect to the compositor")?;
+    let version = client.version().await.context("cannot read the version")?;
+    let snapshot = client.snapshot().await.context("cannot read the outputs")?;
+
+    let mut target = std::io::stdout().lock();
+    match write_list(&mut target, &version, &snapshot) {
+        Err(error) if error.kind() == std::io::ErrorKind::BrokenPipe => Ok(()),
+        other => other.context("cannot write the list"),
+    }
+}
+
+fn write_list(
+    target: &mut impl Write,
+    version: &str,
+    snapshot: &dynamonix_model::Snapshot,
+) -> std::io::Result<()> {
+    writeln!(target, "niri {version}")?;
+    writeln!(
+        target,
+        "{} outputs, {} on",
+        snapshot.len(),
+        snapshot.enabled_count()
+    )?;
+    for output in snapshot.iter() {
+        writeln!(target)?;
+        writeln!(target, "{}", output.label())?;
+        match output.rect() {
+            Some(rect) => {
+                let scale = output.current_scale().unwrap_or_default();
+                let transform = output
+                    .current_transform()
+                    .unwrap_or(niri_ipc::Transform::Normal);
+                writeln!(
+                    target,
+                    "  on   position x={} y={}  logical {}x{}  scale ×{scale}  transform {}",
+                    rect.min.x,
+                    rect.min.y,
+                    rect.max.x - rect.min.x,
+                    rect.max.y - rect.min.y,
+                    transform.label()
+                )?;
+            }
+            None => writeln!(target, "  off")?,
+        }
+        if let Some(mode) = output.current_mode() {
+            writeln!(target, "  mode {}", mode.label())?;
+        }
+        writeln!(
+            target,
+            "  variable refresh rate: {}",
+            if output.vrr_supported {
+                if output.vrr_enabled { "on" } else { "off" }
+            } else {
+                "not available"
+            }
+        )?;
+    }
+    Ok(())
+}
-- 
2.51.2