Version bump to v0.3.0 with CHANGELOG

- Bump version from 0.2.0 to 0.3.0 in build.zig.zon and nREPL describe
- Create CHANGELOG.md covering all work since v0.2.0 (143 commits)
- Major areas: Architecture v2, crash hardening, testing, DX, library compat

Author: chaploud

.dev/memo.md

@@ -59,18 +59,17 @@ Java interop policy: Library-driven. Test real libraries as-is (no forking/embed
 
 ## Current Task
 
-Phase 88: v0.2.0 Release
-88.1: Version bump + CHANGELOG
+Phase 88: v0.3.0 Release (v0.2.0 was premature, 143 commits since)
+88.2: Release notes
+- Write proper release notes for GitHub release
 
 ## Previous Task
 
-Phase 87 COMPLETE (Developer Experience).
-87.1: cljw test (already existed). 87.2: nREPL macroexpand op. 87.3: REPL polish. 87.4: cljw new.
+88.1: Version bump to v0.3.0 + CHANGELOG created.
 
 ## Task Queue
 
 ```
-88.1: Version bump + CHANGELOG
 88.2: Release notes
 88.3: Benchmark record (full history entry)
 88.4: Binary audit (no debug symbols, no embedded secrets)

CHANGELOG.md

@@ -0,0 +1,58 @@
+# Changelog
+
+## v0.3.0 (2026-02-20)
+
+### Architecture v2
+- Exception system unification: `Exception.` returns maps with hierarchy and `.getMessage`
+- ClassDef registry for unified interop dispatch (protocol-based)
+- UTF-8 codepoint correctness for all string operations
+- Handle memory safety with use-after-close detection
+- Scope-reduced All-Zig migration: hybrid architecture (Zig primitives + .clj composition) confirmed optimal
+
+### Crash Hardening
+- Coverage-guided fuzzing harnesses for Reader, Analyzer, Compiler, and VM
+- Structure-aware Clojure form generator for fuzzing
+- Differential testing harness (CW vs JVM Clojure): 146 static + 100 random expressions
+- Resource limits for format, str, and analyzer depth
+- Internal error audit and panic removal
+- Vulnerability audit with VM hardening
+
+### Error System
+- Layered error catalog (docs/errors.md)
+- Improved class/method error messages with suggestions
+
+### Testing
+- 63 upstream test files (62/63 passing)
+- 13 CW-specific test files (exceptions, sorted collections, threading, destructuring, etc.)
+- Reader round-trip, stability, REPL output, and GC stress tests
+- Differential testing expanded to 146 expressions
+
+### Library Compatibility
+- `cljw.io`, `cljw.shell`, `cljw.browse`, `cljw.process` namespace aliases
+- Library compatibility matrix: medley (82.5%), clojure.walk (100%), clojure.set (100%), data.csv (100%)
+
+### Developer Experience
+- `cljw new <name>`: project scaffolding with deps.edn, src/, test/
+- nREPL macroexpand op (supports macroexpand, macroexpand-1, macroexpand-all)
+- REPL namespace-qualified tab completion (e.g., `str/tri<TAB>`)
+- REPL special commands: `:quit`, `:help`
+- Fixed nREPL cons cell rendering (sequences, not dotted pairs)
+- Fixed nREPL server shutdown panic
+
+### CI/CD
+- GitHub Actions CI/CD foundation
+
+### Bug Fixes
+- def/defn now returns var (Clojure compatibility)
+- macroexpand-1 qualified names
+- apply variadic dispatch
+- list* with cons/lazy-seq tails
+- Lazy-seq display uses formatPrStr
+
+## v0.2.0 (2026-02-13)
+
+Initial public release with zwasm v1.1.0 integration.
+
+## v0.1.0 (2026-02-13)
+
+First tagged release.

build.zig.zon

@@ -1,6 +1,6 @@
 .{
     .name = .clojure_wasm,
-    .version = "0.2.0",
+    .version = "0.3.0",
     .dependencies = .{
         .zwasm = .{
             .url = "https://github.com/clojurewasm/zwasm/archive/v1.1.0.tar.gz",

src/repl/nrepl.zig

@@ -370,7 +370,7 @@ fn opDescribe(
 
     const version_entries = [_]BencodeValue.DictEntry{
         .{ .key = "major", .value = .{ .integer = 0 } },
-        .{ .key = "minor", .value = .{ .integer = 1 } },
+        .{ .key = "minor", .value = .{ .integer = 3 } },
         .{ .key = "incremental", .value = .{ .integer = 0 } },
     };