v0.4.0

• ab8c9a8 add Bun-baseline Dockerfile variant for older CPUs and kernels
• a36b411 publish trawl-baseline to a separate GHCR image
• f9a3a03 use semver-baseline tag pattern (1.0.0-baseline)
• 06128d8 fix baseline workflow multi-arch race condition, allow workflow_dispatch from any branch
• bddd70c return 503 from /health while browser pool is initializing
• 177f598 replace wget with curl healthcheck, add timeout and start_period (PR #4, fixes #3)
• 668ad99 switch bun install to --linker=hoisted, fixes EISDIR/module-not-found crash loop (PR #6, fixes #1)
• 182dd2e document :baseline image variant, add crash-loop troubleshooting entry
• a6ee080 confirm :baseline works on synology per issue #1
• c2b328d note bun kernel version requirements for :baseline vs :latest