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/graphql/invoices.clj

@@ -174,8 +174,6 @@
       (let [error (str "Expense account total (" expense-account-total ") does not equal invoice total (" total ")")]
         (throw (ex-info error {:validation-error error}))))))
 
-
-
 (defn add-invoice [context {{:keys [expense_accounts client_id vendor_id] :as in} :invoice} _]
   (assert-no-conflicting in)
   (assert-can-see-client (:id context) client_id)
@@ -193,8 +191,6 @@
   (when-not ((set (map :db/id (:client/bank-accounts (d-clients/get-by-id client-id)))) bank-account-id)
     (throw (ex-info (str "Bank account does not belong to client") {:validation-error "Bank account does not belong to client."}))))
 
-
-
 (defn add-and-print-invoice [context {{:keys [total client_id vendor_id] :as in} :invoice bank-account-id :bank_account_id type :type} _]
   (mu/trace ::validating-invoice [:invoice in]
             (do
@@ -261,7 +257,6 @@
 
     (-> (d-invoices/get-by-id id) (->graphql (:id context)))))
 
-
 (defn get-ids-matching-filters [args]
   (let [ids (some-> args
                     :filters
@@ -448,8 +443,6 @@
                      [])]
       accounts)))
 
-
-
 (defn bulk-change-invoices [context args _]
   (assert-admin (:id context))
   (when-not (:client_id args)