Add vendor pre-population for bulk code and individual edit forms

- Add vendor-changed HTMX handlers for both bulk code and individual edit
- Pre-populate default account at 100% when vendor is selected and no accounts exist
- Fix render-accounts-section to render from step-params correctly
- Change bulk code vendor-changed from hx-get to hx-post to include form data
- Add routes for vendor-changed endpoints
- Update e2e tests to cover vendor pre-population
- Run lein cljfmt fix across codebase

src/clj/auto_ap/ssr/common_handlers.clj

@@ -2,18 +2,17 @@
   (:require [auto-ap.ssr.form-cursor :as fc]
             [auto-ap.ssr.utils :refer [html-response wrap-schema-enforce]]))
 
-
 (defn add-new-entity-handler
   ([path render-fn] (add-new-entity-handler path
                                             render-fn
-                                            (fn default-data [base _]   
+                                            (fn default-data [base _]
                                               base)))
   ([path render-fn build-data]
    (-> (fn new-entity [{{:keys [index]} :query-params :as request}]
          (html-response
           (fc/start-form-with-prefix (conj path (or index 0))
                                      (build-data {:db/id (str (java.util.UUID/randomUUID))
-                                                         :new?  true} request)
+                                                  :new?  true} request)
                                      []
                                      (render-fn fc/*current* request))))
        (wrap-schema-enforce :query-schema [:map