Prepare Decodal packages for release

RELEASING.md

@@ -0,0 +1,52 @@
+# Releasing Decodal
+
+Run all commands from the repository root. Publishing requires Cargo, npm, and JSR credentials; validation does not.
+
+## Versions
+
+- Rust crates: `0.1.3`
+- `tree-sitter-decodal`: `0.1.0`
+- `decodal-wasm` npm/JSR package: `0.1.4`
+- `decodal-codemirror`: unchanged at `0.1.5`
+
+## Validate
+
+```sh
+cargo test --workspace
+cargo clippy --workspace --all-targets -- -D warnings
+cargo clippy -p decodal-wasm --target wasm32-unknown-unknown -- -D warnings
+npm --prefix site/decodal-site run build:runtime
+npm --prefix site/decodal-site test
+npm --prefix site/decodal-site run build
+deno check packages/decodal-wasm/mod.ts
+npm pack --dry-run ./packages/decodal-wasm
+deno publish --dry-run --config packages/decodal-wasm/jsr.json
+```
+
+## Publish Rust crates
+
+Publish in dependency order. Wait for each crate to become available in the crates.io index before continuing.
+Run the corresponding command with `--dry-run` immediately before each real publish.
+
+```sh
+cargo publish -p decodal-derive
+cargo publish -p decodal
+cargo publish -p tree-sitter-decodal
+cargo publish -p decodal-language-service
+cargo publish -p decodal-language-tools
+cargo publish -p decodal-lsp
+```
+
+`decodal-cli` and the Rust `decodal-wasm` wrapper remain repository-only packages.
+
+## Publish JavaScript packages
+
+The runtime build regenerates and normalizes the committed npm/JSR package before publishing.
+
+```sh
+npm --prefix site/decodal-site run build:runtime
+npm publish ./packages/decodal-wasm
+deno publish --config packages/decodal-wasm/jsr.json
+```
+
+After both registries accept the release, tag the release commit and update the deployed site.