Release: library system overhaul (v0.4.8)

.gitignore

@@ -6,6 +6,25 @@ dist/
 build/
 *.tsbuildinfo
 
+# Compiled library archives — the canonical source of truth lives in
+# libs/sources/<lib-name>/ (.st files + library.json for hand-authored
+# libs; .library binary + library.json for codesys-imported libs). The
+# .stlib archives are produced by `npm run build` from those sources,
+# so tracking them in git would just create stale-blob churn on every
+# library or compiler change. Build flow:
+#   npm install && npm run build   →  generates libs/*.stlib
+# CI rebuilds them before tests via vitest globalSetup; release jobs
+# rebuild them as part of `npm run build`.
+libs/*.stlib
+# iec-types.json is a similar build artefact: derived from
+# `src/semantic/iec-types-data.ts` by `scripts/build-iec-types-json.mjs`,
+# so tracking it would just produce churn whenever the metadata changes.
+libs/iec-types.json
+# Extension-side copy is also a build artifact (vscode-extension's
+# esbuild.mjs syncs it from libs/ at vsix build time).
+vscode-extension/bundled-libs/*.stlib
+vscode-extension/bundled-libs/iec-types.json
+
 # IDE and editors
 .vscode/
 .idea/