- Add lib/cljnim_pvec.nim: 32-way HAMT Persistent Vector with structural sharing
- Migrate ckVector from seq[CljVal] to PersistentVector[CljVal] in runtime
- Fix recursive pushLeaf bug (nil nodes at depth > 2)
- Fix defn/if return value bug: replace discard with result = in proc bodies
- Fix cljNth to accept CljVal index
- Add len and [] overloads for PersistentVector seq compatibility
- Add tests/test_pvec.nim (14 tests)
- Update .gitlab-ci.yml to nim:2.2.10 and add test_pvec
- Update docs/ROADMAP.md and add PHASE5_HAMT.md
dimgigov