feat(data-stores): bulk rename, wildcard hint, theme fixes

- Add Bulk Rename panel: code filter (% wildcard), find/replace text,
  preview table before apply, sequential PATCH with IDB cache update
- Fix Code filter label/placeholder to show % wildcard syntax
- Add note that API results are scoped to the active account (backend behavior)
- Replace bg-black/5 with bg-surface-500/10 for light/dark compatibility

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

src/routes/core/data_stores/+page.svelte

@@ -4,6 +4,7 @@ import { untrack } from 'svelte';
 import { goto } from '$app/navigation';
 import { Modal } from 'flowbite-svelte';
 import {
+    ArrowRight,
     Check,
     ChevronLeft,
     ChevronRight,
@@ -12,6 +13,7 @@ import {
     Eye,
     Filter,
     LoaderCircle,
+    Pencil,
     Plus,
     RefreshCw,
     Save,
@@ -69,6 +71,16 @@ let draft_notes = $state('');
 let html_edit_mode = $state<'source' | 'visual'>('source');
 let submit_status = $state<'idle' | 'processing' | 'saved' | 'error'>('idle');
 
+// ── Bulk rename state ─────────────────────────────────────────────────────────
+let show_bulk_rename = $state(false);
+let rename_filter = $state('');       // code LIKE filter — use % as wildcard
+let rename_find_text = $state('');    // literal substring to find within matching codes
+let rename_replace_text = $state(''); // literal replacement for find_text
+let rename_preview: { id: string; old_code: string; new_code: string }[] = $state([]);
+let rename_loading = $state(false);
+let rename_apply_status = $state<'idle' | 'applying' | 'done' | 'error'>('idle');
+let rename_applied = $state(0);
+
 // ── Search ────────────────────────────────────────────────────────────────────
 async function do_search(reset = true) {
     if (reset) page_offset = 0;
@@ -258,6 +270,67 @@ async function handle_delete() {
     }
 }
 
+// ── Bulk rename ───────────────────────────────────────────────────────────────
+async function do_rename_preview() {
+    if (!rename_filter.trim()) return;
+    rename_loading = true;
+    rename_preview = [];
+    rename_apply_status = 'idle';
+    rename_applied = 0;
+
+    const result_li = await api.search_ae_obj({
+        api_cfg: $ae_api,
+        obj_type: 'data_store',
+        search_query: { and: [{ field: 'code', op: 'like', value: rename_filter.trim() }] },
+        order_by_li: [{ code: 'ASC' }],
+        limit: 200,
+        offset: 0,
+        log_lvl: 0
+    });
+
+    if (result_li) {
+        const find = rename_find_text.trim();
+        const repl = rename_replace_text.trim();
+        rename_preview = result_li
+            .map((ds: ae_DataStore) => {
+                const old_code = ds.code ?? '';
+                const new_code = find ? old_code.split(find).join(repl) : old_code;
+                return { id: (ds.id ?? (ds as any).data_store_id) as string, old_code, new_code };
+            })
+            .filter((r: { id: string; old_code: string; new_code: string }) => r.old_code !== r.new_code);
+    }
+
+    rename_loading = false;
+}
+
+async function do_rename_apply() {
+    if (!rename_preview.length) return;
+    if (!confirm(`Rename ${rename_preview.length} data store code(s)?\n\nThis cannot be undone.`)) return;
+
+    rename_apply_status = 'applying';
+    rename_applied = 0;
+    const api_cfg = untrack(() => $ae_api);
+
+    for (const item of rename_preview) {
+        const result = await api.update_ae_obj({
+            api_cfg,
+            obj_type: 'data_store',
+            obj_id: item.id,
+            fields: { code: item.new_code }
+        });
+        if (result) {
+            rename_applied++;
+            await db_core.data_store.update(item.id, { code: item.new_code });
+        }
+    }
+
+    rename_apply_status = rename_applied === rename_preview.length ? 'done' : 'error';
+    if (rename_apply_status === 'done') {
+        rename_preview = [];
+        do_search(false);
+    }
+}
+
 // ── Helpers ───────────────────────────────────────────────────────────────────
 function type_badge(type: string | null | undefined) {
     switch (type) {
@@ -293,6 +366,14 @@ function content_preview(ds: ae_DataStore): string {
                 <p class="text-xs font-bold tracking-widest uppercase opacity-50">Content &amp; Configuration Storage</p>
             </div>
         </div>
+        <div class="flex gap-2">
+            <button
+                type="button"
+                onclick={() => { show_bulk_rename = !show_bulk_rename; }}
+                class="btn preset-tonal-surface font-bold"
+                title="Bulk rename data store codes">
+                <Pencil size={14} class="mr-1" /> Bulk Rename
+            </button>
             <button
                 type="button"
                 onclick={open_new}
@@ -300,6 +381,7 @@ function content_preview(ds: ae_DataStore): string {
                 class:hidden={!$ae_loc.manager_access}>
                 <Plus size={16} class="mr-2" /> New Data Store
             </button>
+        </div>
     </header>
 
     <!-- ── Filter bar ──────────────────────────────────────────────────────── -->
@@ -310,18 +392,21 @@ function content_preview(ds: ae_DataStore): string {
 
         <div class="grid grid-cols-1 gap-3 sm:grid-cols-2 lg:grid-cols-4">
             <div class="space-y-1">
-                <label class="text-xs font-bold opacity-70">Code</label>
+                <label class="text-xs font-bold opacity-70">
+                    Code
+                    <span class="font-normal opacity-60">— use <code>%</code> as wildcard</span>
+                </label>
                 <input
                     type="search"
                     bind:value={qry_code}
-                    placeholder="event__pres_mgmt__*"
+                    placeholder="event__pres_mgmt__%"
                     class="input input-sm w-full font-mono text-xs"
                     onkeydown={(e) => e.key === 'Enter' && do_search()} />
             </div>
             <div class="space-y-1">
                 <label class="text-xs font-bold opacity-70">
                     Account ID
-                    <span class="font-normal opacity-60">— type <code>global</code> for null</span>
+                    <span class="font-normal opacity-60">— <code>global</code> for null</span>
                 </label>
                 <input
                     type="search"
@@ -329,6 +414,7 @@ function content_preview(ds: ae_DataStore): string {
                     placeholder="random ID or 'global'"
                     class="input input-sm w-full font-mono text-xs"
                     onkeydown={(e) => e.key === 'Enter' && do_search()} />
+                <p class="text-[10px] opacity-40">Results are scoped to the active account by the API.</p>
             </div>
             <div class="space-y-1">
                 <label class="text-xs font-bold opacity-70">For Type</label>
@@ -392,6 +478,104 @@ function content_preview(ds: ae_DataStore): string {
         </div>
     </div>
 
+    <!-- ── Bulk Rename Panel ─────────────────────────────────────────────────── -->
+    {#if show_bulk_rename}
+        <div class="card border-surface-500/10 space-y-4 border p-4 shadow-xl preset-tonal-surface">
+            <div class="flex items-center gap-2 text-[10px] font-bold tracking-widest uppercase opacity-50">
+                <Pencil size={11} /> Bulk Rename Codes
+            </div>
+
+            <div class="grid grid-cols-1 gap-3 md:grid-cols-3">
+                <div class="space-y-1">
+                    <label class="text-xs font-bold opacity-70">
+                        Code filter
+                        <span class="font-normal opacity-60">— use <code>%</code> as wildcard</span>
+                    </label>
+                    <input
+                        type="text"
+                        bind:value={rename_filter}
+                        placeholder="event__old_code__%"
+                        class="input input-sm w-full font-mono text-xs"
+                        onkeydown={(e) => e.key === 'Enter' && do_rename_preview()} />
+                </div>
+                <div class="space-y-1">
+                    <label class="text-xs font-bold opacity-70">Find text in code</label>
+                    <input
+                        type="text"
+                        bind:value={rename_find_text}
+                        placeholder="old_code"
+                        class="input input-sm w-full font-mono text-xs" />
+                </div>
+                <div class="space-y-1">
+                    <label class="text-xs font-bold opacity-70">Replace with</label>
+                    <input
+                        type="text"
+                        bind:value={rename_replace_text}
+                        placeholder="new_code"
+                        class="input input-sm w-full font-mono text-xs" />
+                </div>
+            </div>
+
+            <div class="flex items-center gap-2">
+                <button
+                    type="button"
+                    onclick={do_rename_preview}
+                    class="btn btn-sm preset-tonal-primary"
+                    disabled={rename_loading || !rename_filter.trim()}>
+                    {#if rename_loading}
+                        <LoaderCircle size={13} class="mr-1 animate-spin" />
+                    {:else}
+                        <Search size={13} class="mr-1" />
+                    {/if}
+                    Preview Changes
+                </button>
+                {#if rename_preview.length > 0}
+                    <button
+                        type="button"
+                        onclick={do_rename_apply}
+                        class="btn btn-sm preset-filled-warning font-bold"
+                        disabled={rename_apply_status === 'applying'}>
+                        {#if rename_apply_status === 'applying'}
+                            <LoaderCircle size={13} class="mr-1 animate-spin" /> Applying {rename_applied}/{rename_preview.length}…
+                        {:else if rename_apply_status === 'done'}
+                            <Check size={13} class="mr-1" /> Done
+                        {:else}
+                            <Pencil size={13} class="mr-1" /> Apply to {rename_preview.length} record{rename_preview.length !== 1 ? 's' : ''}
+                        {/if}
+                    </button>
+                {/if}
+                {#if rename_apply_status === 'error'}
+                    <span class="text-xs text-error-500">Applied {rename_applied}/{rename_preview.length} — check console for errors.</span>
+                {/if}
+            </div>
+
+            {#if rename_preview.length > 0}
+                <div class="overflow-x-auto rounded-lg border border-surface-500/20">
+                    <table class="w-full text-xs">
+                        <thead>
+                            <tr class="border-b border-surface-500/20 text-left text-[10px] font-bold uppercase tracking-wider opacity-50">
+                                <th class="px-3 py-2">Current Code</th>
+                                <th class="px-3 py-2"></th>
+                                <th class="px-3 py-2">New Code</th>
+                            </tr>
+                        </thead>
+                        <tbody>
+                            {#each rename_preview as item (item.id)}
+                                <tr class="border-b border-surface-500/10">
+                                    <td class="px-3 py-1.5 font-mono opacity-60">{item.old_code}</td>
+                                    <td class="px-2 py-1.5 opacity-40"><ArrowRight size={12} /></td>
+                                    <td class="px-3 py-1.5 font-mono font-bold text-success-600 dark:text-success-400">{item.new_code}</td>
+                                </tr>
+                            {/each}
+                        </tbody>
+                    </table>
+                </div>
+            {:else if !rename_loading && rename_filter.trim()}
+                <p class="text-xs opacity-40">No changes to preview — either no records matched or find/replace text produced no differences.</p>
+            {/if}
+        </div>
+    {/if}
+
     <!-- ── Results ─────────────────────────────────────────────────────────── -->
     {#if results.length > 0}
         <div class="card preset-tonal-surface border-surface-500/10 border shadow-xl">
@@ -611,7 +795,7 @@ function content_preview(ds: ae_DataStore): string {
         </div>
 
         <!-- Flags row -->
-        <div class="border-surface-500/20 flex flex-wrap items-center gap-x-6 gap-y-2 rounded-lg border bg-black/5 px-4 py-3">
+        <div class="border-surface-500/20 flex flex-wrap items-center gap-x-6 gap-y-2 rounded-lg border bg-surface-500/10 px-4 py-3">
             <label class="flex cursor-pointer items-center gap-2 text-sm">
                 <input type="checkbox" class="checkbox" bind:checked={draft_enable} />
                 Enable
@@ -649,7 +833,7 @@ function content_preview(ds: ae_DataStore): string {
             <div class="flex items-center justify-between">
                 <span class="text-xs font-bold opacity-70">Content</span>
                 {#if draft_type === 'html'}
-                    <div class="flex items-center gap-1 rounded bg-black/5 p-0.5">
+                    <div class="flex items-center gap-1 rounded bg-surface-500/10 p-0.5">
                         <button
                             type="button"
                             class="flex items-center gap-1 rounded px-2 py-0.5 text-[10px] font-bold uppercase transition-all"