chore(vendor): import pi 1.3.0

Imported as a linear vendor commit so forge rebases do not replay the upstream root tree.

git-subtree-dir: third_party/pi

git-subtree-split: 71023aec1546d6d677a65669c5665c0927ce0dd0

third_party/pi/packages/tui/native/linux/build.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+compiler="${CC:-cc}"
+
+if [[ "$(uname -s)" != "Linux" ]]; then
+    echo "Linux native helpers must be built on Linux" >&2
+    exit 1
+fi
+
+case "$(uname -m)" in
+    x86_64)
+        arch="x64"
+        ;;
+    aarch64|arm64)
+        arch="arm64"
+        ;;
+    *)
+        echo "Unsupported Linux architecture: $(uname -m)" >&2
+        exit 1
+        ;;
+esac
+
+if ! command -v "$compiler" >/dev/null 2>&1; then
+    echo "Linux C compiler not found: $compiler" >&2
+    exit 1
+fi
+build_dir="$(mktemp -d "${TMPDIR:-/tmp}/pi-tui-linux.XXXXXX")"
+trap 'rm -rf "$build_dir"' EXIT
+
+common_flags=(
+    -std=c11
+    -D_POSIX_C_SOURCE=200809L
+    -Wall
+    -Wextra
+    -Werror
+    -Os
+    -flto
+    -fPIC
+    -pthread
+    -fvisibility=hidden
+    -fno-stack-protector
+    -shared
+    -nostdlib
+    -Wl,--unresolved-symbols=ignore-all
+    -Wl,--no-as-needed
+    -Wl,-O2
+    -Wl,--gc-sections
+    # A timed-out private thread may outlive the Node environment that loaded us.
+    -Wl,-z,nodelete
+    -Wl,-s
+)
+
+x11_output="$build_dir/linux-platform-x11.node"
+"$compiler" "${common_flags[@]}" \
+    "$script_dir/src/linux-platform-x11.c" \
+    -lxcb \
+    -o "$x11_output"
+
+output_dir="$script_dir/prebuilds/linux-$arch"
+mkdir -p "$output_dir"
+install -m 755 "$x11_output" "$output_dir/linux-platform-x11.node"
+printf 'Built %s\n' "$output_dir/linux-platform-x11.node"