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/pi-test.sh

@@ -54,4 +54,6 @@ if [[ "$NO_ENV" == "true" ]]; then
   echo "Running without API keys..."
 fi
 
-"$SCRIPT_DIR/node_modules/.bin/tsx" --tsconfig "$SCRIPT_DIR/tsconfig.json" "$SCRIPT_DIR/packages/coding-agent/src/experimental/cli.ts" ${ARGS[@]+"${ARGS[@]}"}
+# --import takes a module specifier, so pass the resolver as a file URL (raw paths break on #, ?, %).
+RESOLVER_URL="$(node -p 'require("node:url").pathToFileURL(process.argv[1]).href' "$SCRIPT_DIR/packages/coding-agent/src/experimental/source-resolver.ts")"
+node --import "$RESOLVER_URL" "$SCRIPT_DIR/packages/coding-agent/src/cli.ts" ${ARGS[@]+"${ARGS[@]}"}