Migrate socket2 path resolution to bread-utils::hypr

hyprland_socket2_path() duplicated the same HYPRLAND_INSTANCE_SIGNATURE +
XDG_RUNTIME_DIR resolution breadbox and breadclip had for socket1 — now
shared via bread_utils::hypr::socket_path (path dependency for now, see
the TODO in Cargo.toml).

Builds and all 16 existing tests pass.

Cargo.lock

@@ -20,11 +20,21 @@ version = "2.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4388bee8683e3d04af747c73422af53102d2bd24d9eadb6cbc100baef4b43f8"
 
+[[package]]
+name = "bread-utils"
+version = "0.2.3"
+dependencies = [
+ "dirs",
+ "serde",
+ "serde_json",
+]
+
 [[package]]
 name = "breadmon"
 version = "0.1.1"
 dependencies = [
  "anyhow",
+ "bread-utils",
  "crossterm",
  "dirs",
  "futures",

Cargo.toml

@@ -19,6 +19,8 @@ toml       = "0.8"
 anyhow     = "1"
 dirs       = "5"
 futures    = "0.3"
+# TODO(owner): switch to tag-pinned git dependency once bread-utils is merged and tagged, matching the bread-theme pattern
+bread-utils = { path = "../bread-ecosystem-fix-worktree/bread-utils" }
 
 [profile.release]
 lto = "thin"

src/main.rs

@@ -24,12 +24,6 @@ use tokio::{
 
 use ui::{AppState, StatusLevel};
 
-fn hyprland_socket2_path() -> Option<String> {
-    let instance = std::env::var("HYPRLAND_INSTANCE_SIGNATURE").ok()?;
-    let runtime = std::env::var("XDG_RUNTIME_DIR").unwrap_or_else(|_| "/run/user/1000".into());
-    Some(format!("{}/hypr/{}/.socket2.sock", runtime, instance))
-}
-
 #[derive(Debug)]
 enum AppEvent {
     Key(crossterm::event::KeyEvent),
@@ -104,7 +98,7 @@ async fn run(
     // Hyprland socket hotplug listener
     let tx_hotplug = tx.clone();
     tokio::spawn(async move {
-        if let Some(sig) = hyprland_socket2_path() {
+        if let Some(sig) = bread_utils::hypr::socket_path(bread_utils::hypr::Socket::Events) {
             if let Ok(mut stream) = tokio::net::UnixStream::connect(&sig).await {
                 use tokio::io::AsyncBufReadExt;
                 let reader = tokio::io::BufReader::new(&mut stream);