feat(keys): vim keys in any layout, z motions, no Option chords

Keys on a non-Latin layout map to their physical US position, so j, k,
gg and / work on the Russian layout. Lists get z z, z t, z b, and the
first row scrolls the page to the top. The editor drops Alt chords for
Esc then a letter, reorder in groups, piggy banks and subscriptions
moves to J and K.

src/lib/components/editor/SplitBox.svelte

@@ -8,7 +8,6 @@
   import Field from "#lib/components/inputs/Field.svelte";
   import { INPUT } from "#lib/components/inputs/styles.js";
   import TagsInput from "#lib/components/inputs/TagsInput.svelte";
-  import { prettyKeys } from "#lib/keys.svelte.js";
   import { session } from "#lib/session.svelte.js";
   import AccountField from "./AccountField.svelte";
   import type { Catalog } from "./catalog.svelte.js";
@@ -205,9 +204,7 @@
       >
         <Trash class="size-3.5" />
         Remove split
-        <span class="kbd hidden lg:inline-flex"
-          >{prettyKeys("mod+alt+Backspace")[0]}</span
-        >
+        <span class="kbd hidden lg:inline-flex">X</span>
       </button>
     {/if}
   {/snippet}
@@ -216,7 +213,7 @@
       <Field
         error={err("description")}
         for={id("description")}
-        keys={keyHint("alt+d")}
+        keys={keyHint("d")}
         label="Description"
       >
         <AutocompleteInput
@@ -229,10 +226,10 @@
           bind:value={split.description}
         />
       </Field>
-      {@render account("source", "Source account", "alt+f")}
-      {@render account("destination", "Destination account", "alt+t")}
+      {@render account("source", "Source account", "f")}
+      {@render account("destination", "Destination account", "t")}
       {#if first}
-        <Field error={err("date")} for={id("date")} keys="alt+w" label="Date">
+        <Field error={err("date")} for={id("date")} keys="w" label="Date">
           <DateInput
             id={id("date")}
             invalid={Boolean(err("date"))}
@@ -245,7 +242,7 @@
         <Field
           error={err("amount")}
           for={id("amount")}
-          keys={keyHint("alt+m")}
+          keys={keyHint("m")}
           label="Amount"
         >
           <AmountInput
@@ -328,7 +325,7 @@
         <Field
           error={err("budget_id")}
           for={id("budget")}
-          keys={keyHint("alt+b")}
+          keys={keyHint("b")}
           label="Budget"
         >
           <RefField
@@ -343,7 +340,7 @@
       <Field
         error={err("category_name")}
         for={id("category")}
-        keys={keyHint("alt+k")}
+        keys={keyHint("c")}
         label="Category"
       >
         <AutocompleteInput
@@ -385,7 +382,7 @@
       <Field
         error={err("tags")}
         for={id("tags")}
-        keys={keyHint("alt+g")}
+        keys={keyHint("#")}
         label="Tags"
       >
         <TagsInput
@@ -409,7 +406,7 @@
       <Field
         error={err("notes")}
         for={id("notes")}
-        keys={keyHint("alt+r")}
+        keys={keyHint("r")}
         label="Notes"
       >
         <textarea