Add deposits rebuild endpoint and fix date serialization

Add POST /api/deposits/rebuild to re-project all bank_to_exchange events.
Fix date-off-by-one by converting java.sql.Date to LocalDate via
ReadableColumn and serializing with Jackson JavaTimeModule.
Sort all event/deposit queries by occurred_at, id.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/clj/pmagnus/btcdata/web/routes/api.clj

@@ -174,7 +174,9 @@
     {:get  (fn [req] (tx/list-events opts req))
      :post (fn [req] (tx/create-event! opts req))}]
    ["/deposits"
-    {:get (fn [req] (tx/list-deposits opts req))}]])
+    {:get (fn [req] (tx/list-deposits opts req))}]
+   ["/deposits/rebuild"
+    {:post (fn [req] (tx/rebuild-deposits! opts req))}]])
 
 (defn route-data [opts]
   (merge