feat(run): add script to run server with build metadata

run.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+#
+# Runs the server from source, with the build metadata stamped in.
+#
+# The console is embedded in the binary (web/embed.go), so compiling without
+# web/dist fails. Say that plainly rather than leaving go:embed's error.
+set -euo pipefail
+
+# Run from the repository root, however the script was invoked.
+cd "$(dirname "$0")"
+
+if [ ! -f web/dist/index.html ]; then
+    echo "The web console is not built: web/dist is missing." >&2
+    echo "Run build-linux-x86_64.sh once, or \"npm run build\" in frontend/." >&2
+    exit 1
+fi
+
+# Get git commit hash (shortened to 7 characters, can also use full)
+COMMIT=$(git rev-parse --short HEAD)
+
+# Get UTC time
+BUILD_DATE=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+
+# Build -ldflags
+LDFLAGS="-X main.BuildTime=$BUILD_DATE -X main.CommitHash=$COMMIT"
+go run -ldflags "$LDFLAGS" .