Exit prerelease mode for stable 1.6.0

.changeset/keen-zebras-melt.md

@@ -2,10 +2,8 @@
 '@codama/spec': minor
 ---
 
-Three spec changes that adjust the encoded shape:
+Two spec changes that adjust the encoded shape:
 
 - **Identifier casing.** All spec identifiers are now camelCase. Enumerations, unions, and nested-union aliases that were PascalCase (`TypeNode`, `BytesEncoding`, `NestedTypeNode`, …) are renamed to camelCase (`typeNode`, `bytesEncoding`, `nestedTypeNode`, …). `validate.ts` now enforces camelCase on unions, enumerations, and nested unions alongside the existing node-kind check.
 
 - **New `address` type-expression kind.** A new primitive `{ kind: 'address' }` (plus an `address()` factory) replaces `string()` on attributes that hold a Solana address. Applied to `programNode.publicKey`, `publicKeyValueNode.publicKey`, and `pdaNode.programId`. Attribute names and node kinds are unchanged; only the type expression changes. Codegen targets can now render these as a dedicated address type (e.g. `Address` in Rust) rather than collapsing to a generic string.
-
-- **Empty arrays omitted from the wire (where semantically equivalent to absent).** Array-of-child attributes flip to optional on nodes where an empty array carries no meaning beyond "no children of this kind": `programNode`'s seven child arrays (`accounts`, `instructions`, `definedTypes`, `pdas`, `events`, `errors`, `constants`), `rootNode.additionalPrograms`, `instructionNode.accounts` and `arguments`, `pdaNode.seeds`, and `pdaValueNode.seeds`. Attributes whose emptiness encodes structural meaning (`structTypeNode.fields`, `tupleTypeNode.items`, `enumTypeNode.variants`, value-side equivalents, `hiddenPrefixTypeNode.prefix`, `hiddenSuffixTypeNode.suffix`) remain required.

.changeset/pre.json

@@ -1,5 +1,5 @@
 {
-  "mode": "pre",
+  "mode": "exit",
   "tag": "rc",
   "initialVersions": {
     "@codama/spec": "1.6.0-rc.0"

.changeset/release-1-6-0.md

@@ -0,0 +1,5 @@
+---
+'@codama/spec': minor
+---
+
+First stable release of `@codama/spec`. The v1 spec shape settled across the `1.6.0-rc.*` line is now published as `1.6.0`. Reference implementations in [TypeScript](https://github.com/codama-idl/codama) and [Rust](https://github.com/codama-idl/codama-rs) consume this package to render their own node types, factories, visitors, and validators from a single source of truth. Future Codama majors will land alongside the `v1` entrypoint as `v2`, `v3`, …, with the default `@codama/spec` entrypoint tracking the latest stable.