Show the source branch on development builds (#3216)

Development web and Electron builds now show their source branch in the expanded sidebar, including a branch icon and safe truncation. Dev launchers inject the label at build time; production builds remain unchanged.

packages/desktop/scripts/dev-runner.mjs

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 import net from "node:net";
 import path from "node:path";
-import { spawn } from "node:child_process";
+import { execFileSync, spawn } from "node:child_process";
 import { createRequire } from "node:module";
 import { fileURLToPath } from "node:url";
 import { createElectronSpawnOptions, resolveChildKillTarget } from "./dev-runner-config.mjs";
@@ -27,6 +27,10 @@ const colorEnv = {
   FORCE_COLOR: process.env.FORCE_COLOR || "1",
   npm_config_color: process.env.npm_config_color || "always",
 };
+const devBuildLabel = execFileSync("git", ["branch", "--show-current"], {
+  cwd: rootDir,
+  encoding: "utf8",
+}).trim();
 
 const children = new Map();
 let stopping = false;
@@ -166,6 +170,7 @@ spawnChild("metro", "npx", ["expo", "start", "--port", String(expoPort)], {
     ...colorEnv,
     BROWSER: "none",
     APP_VARIANT: "development",
+    EXPO_PUBLIC_PASEO_DEV_BUILD_LABEL: devBuildLabel,
     PASEO_WEB_PLATFORM: "electron",
   },
 });

packages/desktop/scripts/dev.ps1

@@ -32,6 +32,7 @@ try {
 
 # Set EXPO_DEV_URL in the environment so Electron inherits it
 $env:EXPO_DEV_URL = "http://localhost:$($env:EXPO_PORT)"
+$env:EXPO_PUBLIC_PASEO_DEV_BUILD_LABEL = (git -C $RootDir branch --show-current).Trim()
 
 $env:PASEO_DEV_ROOT = $RootDir
 $env:PASEO_DEV_RUNTIME_FALLBACK_ROOT = $RootDir