feat(core): implement core teleporter module

packages/core/scripts/build-teleporter.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+set -e
+
+# Define paths
+CLI_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd)"
+EXA_ROOT="$(cd "$CLI_ROOT/../jetski/Exafunction" && pwd)"
+TELEPORTER_TS="$CLI_ROOT/packages/core/src/teleportation/trajectory_teleporter.ts"
+TELEPORTER_MIN_JS="$CLI_ROOT/packages/core/src/teleportation/trajectory_teleporter.min.js"
+
+if [ ! -d "$EXA_ROOT" ]; then
+  echo "Error: Exafunction directory not found at $EXA_ROOT"
+  exit 1
+fi
+
+echo "Building Protobuf JS definitions in Exafunction..."
+cd "$EXA_ROOT"
+pnpm --dir exa/proto_ts build
+
+echo "Bundling and minifying trajectory_teleporter.ts..."
+# Because esbuild resolves relative imports from the source file's directory,
+# and trajectory_teleporter.ts playfully imports './exa/...', we copy it to EXA_ROOT
+# temporarily for the build step to succeed.
+cp "$TELEPORTER_TS" "$EXA_ROOT/trajectory_teleporter_tmp.ts"
+
+cd "$EXA_ROOT"
+pnpm dlx esbuild "./trajectory_teleporter_tmp.ts" \
+  --bundle \
+  --format=esm \
+  --platform=node \
+  --outfile="$TELEPORTER_MIN_JS"
+
+rm "$EXA_ROOT/trajectory_teleporter_tmp.ts"
+
+echo "Done! Wrote bundle to $TELEPORTER_MIN_JS"