# Replace core.async with promesa

## Tasks

- [x] 1. Add `funcool/promesa` to deps.edn, remove `core.async`
- [x] 2. Update `store.cljc` docstring (returns promises, not channels)
- [x] 3. Rewrite `store/memory.cljc` — return `(p/resolved val)` 
- [x] 4. Rewrite `store/idb.cljs` — wrap IDB callbacks in `(p/create ...)`
- [x] 5. Rewrite `sync.cljc` — return promises from pull!/push!/fetch-transit
- [x] 6. Rewrite `core.cljc` — promises + timer-based sync loop
- [x] 7. Update `test/core_test.clj` — `deref` promises instead of `<!!`
- [x] 8. Update `example/todomvc/todomvc.cljs` — `p/let` instead of `go`/`<!`
- [x] 9. Run tests — 28 tests, 87 assertions, 0 failures