chore: release v0.2.0 (#10)

- Bump version to 0.2.0
- Add initial changelog with 0.1.0 and 0.2.0 releases
- Update CLAUDE.md with changelog requirements and correct release process

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: prestwich

CHANGELOG.md

@@ -7,11 +7,33 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.2.0] - 2026-02-05
+
+### Added
+
+- Bundle types (`SignetEthBundle`, `SignetCallBundle`) with builder classes
+- `SignetEthBundleBuilder` and `SignetCallBundleBuilder` for constructing bundles
+- Bundle serialization helpers (`serializeEthBundle`, `serializeCallBundle`)
+- Order feasibility checking (`checkOrderFeasibility`)
+- Tx-cache client (`createTxCacheClient`) for submitting orders and bundles
+- Passage helpers (`enter`, `enterToken`) for bridging to Signet
+- WETH helpers (`wrapEth`, `unwrapEth`) for wrapping/unwrapping ETH
+- Permit2 approval helpers (`getPermit2Allowance`, `approvePermit2`, `ensurePermit2Approval`)
+- Token registry with USDC/USDT addresses for Mainnet and Parmigiana
+- Viem chain definitions (`signetRollup`, `parmigianaRollup`, `parmigianaHost`)
+- New subpath exports: `/client`, `/passage`, `/weth`, `/permit2`
+
+### Changed
+
+- Expanded token mapping utilities (`getTokenAddress`, `resolveTokenSymbol`, `mapTokenCrossChain`)
+
+## [0.1.0] - 2026-01-15
+
 ### Added
 
 - Initial release of @signet-sh/sdk
 - Order and fill signing with EIP-712 and Permit2
 - Type definitions matching Rust `signet-types`
 - Chain constants for MAINNET and PARMIGIANA
 - Test vectors for cross-implementation verification
-- Subpath exports for tree-shaking (`@signet-sh/sdk/constants`, etc.)
+- Subpath exports for tree-shaking (`/constants`, `/signing`, `/types`, `/abi`, `/tokens`)

CLAUDE.md

@@ -48,12 +48,18 @@
 - `viem` is the only production dependency (as peerDep)
 - Keep dependencies minimal - this is a library
 
+## Changelog
+
+- ALWAYS update `CHANGELOG.md` when adding features, fixing bugs, or making breaking changes
+- Follow [Keep a Changelog](https://keepachangelog.com/) format
+- Add entries under `[Unreleased]` section during development
+- Categories: Added, Changed, Deprecated, Removed, Fixed, Security
+
 ## Releases
 
-This project uses changesets for versioning:
+Releases are automated via GitHub Actions. To release:
 
-```bash
-pnpm changeset        # Create a new changeset
-pnpm changeset version  # Apply changesets and bump versions
-pnpm changeset publish  # Publish to npm
-```
+1. Update version in `package.json`
+2. Move `[Unreleased]` entries to a new version section in `CHANGELOG.md`
+3. Commit and push to `main`
+4. CI creates GitHub release and publishes to npm

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@signet-sh/sdk",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "TypeScript SDK for Signet Orders - create, sign, and verify orders compatible with signet-types",
   "type": "module",
   "main": "./dist/index.js",