fix(coding-agent): target baseline x64 CPUs (#7390)

Fixes #7149

Co-authored-by: Mario Zechner <badlogicgames@gmail.com>

packages/coding-agent/CHANGELOG.md

@@ -13,6 +13,7 @@
 
 ### Fixed
 
+- Fixed standalone x64 binaries requiring Haswell-era AVX2/BMI2 instructions by compiling release executables against Bun's baseline runtime ([#7149](https://github.com/earendil-works/pi/issues/7149)).
 - Fixed `Ctrl+X` copy confirmations in fullscreen mode adding a transcript status line instead of showing the transient `Copied!` marker.
 - Fixed Kitty image previews in fullscreen mode overlapping the sticky editor and footer dock while scrolling.
 - Fixed image-heavy fullscreen sessions lagging when layout changes retransmitted visible Kitty image payloads and rendered the transcript twice per frame.

scripts/build-binaries.sh

@@ -141,13 +141,18 @@ fi
 
 for platform in "${PLATFORMS[@]}"; do
     echo "Building for $platform..."
+    bun_target="bun-$platform"
+    if [[ "$platform" == *-x64 ]]; then
+        bun_target="${bun_target}-baseline"
+    fi
+
     # Bun compiled executables only embed worker scripts when they are passed as
     # explicit build entrypoints. The runtime can still use new URL(...), but the
     # worker must be present in the compiled executable.
     if [[ "$platform" == windows-* ]]; then
-        bun build --compile --target=bun-$platform ./dist/bun/cli.js ./src/utils/image-resize-worker.ts --outfile "$OUTPUT_DIR/$platform/pi.exe"
+        bun build --compile --target="$bun_target" ./dist/bun/cli.js ./src/utils/image-resize-worker.ts --outfile "$OUTPUT_DIR/$platform/pi.exe"
     else
-        bun build --compile --target=bun-$platform ./dist/bun/cli.js ./src/utils/image-resize-worker.ts --outfile "$OUTPUT_DIR/$platform/pi"
+        bun build --compile --target="$bun_target" ./dist/bun/cli.js ./src/utils/image-resize-worker.ts --outfile "$OUTPUT_DIR/$platform/pi"
     fi
 done