feat(launcher): add Native Test Mode for profile/command preview

Enables testing the LaunchProfile system from any device (no Mac/Electron
needed). When active, the Open button simulates the full native flow and
shows a debug popup with everything that WOULD be sent to Electron.

- ae_events_stores__launcher_defaults.ts: add native_test_mode boolean
  (persisted, default false) to LauncherLocState and launcher_loc_defaults.

- launcher_cfg_app_modes.svelte: add Native Test Mode checkbox toggle in
  the Advanced Toggles (Edit Mode Only) section with active-state warning.

- launcher_file_cont.svelte:
  - Add test_mode_popup_open/test_mode_popup_data state vars.
  - Add branch 0 in handle_open_file(): when native_test_mode + app_mode=native,
    skip all Electron calls; resolve the real LaunchProfile, build a data
    snapshot, open the debug popup.
  - Debug popup shows: file info, simulated temp path, cache/copy pass,
    resolved LaunchProfile fields, set_display_layout call, open command
    (run_cmd or open_local_file_v2 fallback), sleep delay, post-script
    (AppleScript or shell: prefix). Click backdrop or Close to dismiss.

src/lib/stores/ae_events_stores__launcher_defaults.ts

@@ -78,6 +78,13 @@ export interface LauncherLocState {
     controller: string;
     controller_group_code: string;
     controller_client_id: string | null;
+    /**
+     * Native test mode: simulates the full native-branch open flow without Electron.
+     * Shows a debug popup with the resolved profile, commands, and AppleScript instead
+     * of actually launching files. Useful for testing LaunchProfile config from any
+     * device/OS without deploying to the Mac laptop.
+     */
+    native_test_mode: boolean;
 }
 
 export interface LauncherSessState {
@@ -198,7 +205,8 @@ export const launcher_loc_defaults: LauncherLocState = {
 
     controller: 'local',
     controller_group_code: 'launcher-00',
-    controller_client_id: null
+    controller_client_id: null,
+    native_test_mode: false
     // controller_cmd: null,
     // controller_trigger_send: null,
 };

src/routes/events/[event_id]/(launcher)/cfg_components/launcher_cfg_app_modes.svelte

@@ -230,6 +230,32 @@ function apply_mode(mode: 'poster' | 'oral') {
                     </label>
                 </div>
             </div>
+
+            <!-- 5. Native Test Mode (Edit Mode Only) -->
+            <!-- Simulates the full native open flow without Electron/Mac hardware.
+                 Shows what commands, profile, and AppleScript WOULD be sent,
+                 as a popup, instead of actually running them. -->
+            <div
+                class="border-surface-500/20 col-span-full mt-1 flex flex-col gap-2 border-t pt-3">
+                <p class="ml-1 text-[9px] font-bold uppercase opacity-50">
+                    Dev / Testing
+                </p>
+                <label class="group flex cursor-pointer items-center gap-2 p-1">
+                    <input
+                        type="checkbox"
+                        bind:checked={$events_loc.launcher.native_test_mode}
+                        class="checkbox checkbox-sm" />
+                    <span class="group-hover:text-warning-500 text-xs italic">
+                        Native Test Mode
+                    </span>
+                </label>
+                {#if $events_loc.launcher.native_test_mode}
+                    <p class="ml-1 text-[8px] leading-tight italic text-yellow-400/70">
+                        ⚠ Active: Open buttons will simulate native launch and
+                        show a debug popup instead of running commands.
+                    </p>
+                {/if}
+            </div>
         {/if}
     </div>
 </Launcher_Cfg_Section>

src/routes/events/[event_id]/(launcher)/launcher_file_cont.svelte

@@ -91,6 +91,10 @@ let open_file_status: null | string = $state(null);
 let open_file_status_message: null | string = $state(null);
 let open_file_error_detail: string | null = $state(null);
 
+/** State for the native test mode debug popup */
+let test_mode_popup_open: boolean = $state(false);
+let test_mode_popup_data: Record<string, any> | null = $state(null);
+
 /** Simple promise-based delay for post-open script timing */
 const sleep = (ms: number) => new Promise((r) => setTimeout(r, ms));
 
@@ -132,6 +136,43 @@ async function handle_open_file() {
     $events_slct.event_file_id = event_file_id;
     $events_slct.event_file_obj = event_file_obj;
 
+    // 0. NATIVE TEST MODE — simulate full native flow, show debug popup instead of running commands
+    // Active when native_test_mode toggle is on (regardless of is_native / app_mode).
+    // Lets you preview the resolved profile, open command, and post-script from any device.
+    if ($events_loc.launcher.native_test_mode && $events_loc.launcher.app_mode === 'native') {
+        open_file_clicked = true;
+        open_file_status = 'checking_cache';
+        open_file_status_message = 'Test Mode: simulating cache check...';
+
+        await sleep(400); // Brief simulated cache check
+
+        open_file_status = 'opening_file';
+        open_file_status_message = 'Test Mode: resolving launch profile...';
+
+        const profile = get_launch_profile(event_file_obj.extension, event_file_obj);
+        const open_cmd_resolved = profile.open_cmd
+            ? profile.open_cmd.replaceAll('{{path}}', `/tmp/ae_test/${event_file_obj.filename}`)
+            : null;
+
+        test_mode_popup_data = {
+            filename: event_file_obj.filename,
+            extension: event_file_obj.extension,
+            hash_sha256: event_file_obj.hash_sha256,
+            simulated_temp_path: `/tmp/ae_test/${event_file_obj.filename}`,
+            profile,
+            open_cmd_resolved,
+            display_override: event_file_obj?.cfg_json?.display_override ?? null,
+            cache_check: 'PASS (simulated)',
+            copy_to_temp: 'PASS (simulated)'
+        };
+        test_mode_popup_open = true;
+
+        open_file_status = 'open';
+        open_file_status_message = 'Test Mode: profile resolved — see popup';
+        setTimeout(() => (open_file_clicked = false), 6000);
+        return true;
+    }
+
     // 1. NATIVE MODE (Electron)
     if ($ae_loc.is_native && $events_loc.launcher.app_mode === 'native') {
         const cache_root = $ae_loc.local_file_cache_path;
@@ -595,3 +636,121 @@ function prevent_default<T extends Event>(fn: (event: T) => void) {
         </span>
     </span>
 </div>
+
+<!-- Native Test Mode Debug Popup -->
+<!-- Shows what WOULD be sent to Electron: resolved profile, open command, post-script.
+     Appears when native_test_mode is active and a file is "opened". -->
+{#if test_mode_popup_open && test_mode_popup_data}
+    <!-- svelte-ignore a11y_click_events_have_key_events a11y_no_static_element_interactions -->
+    <div
+        class="fixed inset-0 z-[9999] flex items-center justify-center bg-black/70 p-4"
+        role="presentation"
+        onclick={() => (test_mode_popup_open = false)}>
+        <!-- svelte-ignore a11y_click_events_have_key_events a11y_no_static_element_interactions -->
+        <div
+            class="bg-surface-900 border-warning-500/40 relative flex max-h-[90vh] w-full max-w-2xl flex-col gap-0 overflow-hidden rounded-xl border shadow-2xl"
+            role="dialog"
+            aria-modal="true"
+            aria-label="Native Test Mode Debug Info"
+            tabindex="-1"
+            onclick={(e) => e.stopPropagation()}>
+
+            <!-- Header -->
+            <div class="bg-warning-500/10 border-warning-500/30 flex items-center gap-2 border-b px-4 py-3">
+                <span class="text-warning-400 font-mono text-xs font-bold uppercase tracking-wider">
+                    🧪 Native Test Mode — What would run on Mac
+                </span>
+                <button
+                    type="button"
+                    onclick={() => (test_mode_popup_open = false)}
+                    class="btn btn-xs preset-tonal-surface ml-auto">
+                    Close
+                </button>
+            </div>
+
+            <!-- Scrollable content -->
+            <div class="flex flex-col gap-3 overflow-y-auto p-4 font-mono text-xs">
+
+                <!-- File info -->
+                <div class="flex flex-col gap-1">
+                    <span class="text-[9px] font-bold uppercase opacity-50">File</span>
+                    <div class="rounded bg-black/30 px-3 py-2 leading-relaxed">
+                        <div><span class="opacity-50">filename: </span>{test_mode_popup_data.filename}</div>
+                        <div><span class="opacity-50">extension: </span>{test_mode_popup_data.extension}</div>
+                        <div><span class="opacity-50">hash: </span><span class="opacity-60">{test_mode_popup_data.hash_sha256}</span></div>
+                        <div><span class="opacity-50">temp path: </span><span class="text-green-400">{test_mode_popup_data.simulated_temp_path}</span></div>
+                    </div>
+                </div>
+
+                <!-- Cache / copy -->
+                <div class="flex flex-col gap-1">
+                    <span class="text-[9px] font-bold uppercase opacity-50">Steps 1–2</span>
+                    <div class="rounded bg-black/30 px-3 py-2 leading-relaxed">
+                        <div><span class="opacity-50">check_hash_file_cache: </span><span class="text-green-400">{test_mode_popup_data.cache_check}</span></div>
+                        <div><span class="opacity-50">copy_from_cache_to_temp: </span><span class="text-green-400">{test_mode_popup_data.copy_to_temp}</span></div>
+                    </div>
+                </div>
+
+                <!-- Resolved profile -->
+                <div class="flex flex-col gap-1">
+                    <span class="text-[9px] font-bold uppercase opacity-50">Resolved LaunchProfile</span>
+                    <div class="rounded bg-black/30 px-3 py-2 leading-relaxed">
+                        <div><span class="opacity-50">app: </span><span class="text-primary-300">{test_mode_popup_data.profile.app}</span></div>
+                        <div><span class="opacity-50">display_mode: </span><span class:text-primary-300={test_mode_popup_data.profile.display_mode === 'extend'} class:text-yellow-300={test_mode_popup_data.profile.display_mode === 'mirror'} class:opacity-40={test_mode_popup_data.profile.display_mode === 'none'}>{test_mode_popup_data.profile.display_mode}</span></div>
+                        {#if test_mode_popup_data.display_override}
+                            <div><span class="text-yellow-400 opacity-80">display_override (cfg_json): </span><span class="text-yellow-300">{test_mode_popup_data.display_override}</span></div>
+                        {/if}
+                        <div><span class="opacity-50">post_delay_ms: </span>{test_mode_popup_data.profile.post_delay_ms ?? 2000}</div>
+                    </div>
+                </div>
+
+                <!-- Step 3: set_display_layout -->
+                <div class="flex flex-col gap-1">
+                    <span class="text-[9px] font-bold uppercase opacity-50">Step 3 — set_display_layout</span>
+                    <div class="rounded bg-black/30 px-3 py-2">
+                        {#if test_mode_popup_data.profile.display_mode !== 'none'}
+                            <span class="text-primary-300">native.set_display_layout({{ mode: '{test_mode_popup_data.profile.display_mode}' }})</span>
+                        {:else}
+                            <span class="opacity-40">skipped (display_mode: none)</span>
+                        {/if}
+                    </div>
+                </div>
+
+                <!-- Step 4: open command -->
+                <div class="flex flex-col gap-1">
+                    <span class="text-[9px] font-bold uppercase opacity-50">Step 4 — Open File</span>
+                    <div class="rounded bg-black/30 px-3 py-2">
+                        {#if test_mode_popup_data.open_cmd_resolved}
+                            <div class="mb-1 opacity-50 text-[9px]">native.run_cmd()</div>
+                            <pre class="whitespace-pre-wrap break-all text-green-300">{test_mode_popup_data.open_cmd_resolved}</pre>
+                        {:else}
+                            <div class="opacity-50 text-[9px]">native.open_local_file_v2()</div>
+                            <span class="text-yellow-300">{test_mode_popup_data.simulated_temp_path}</span>
+                            <span class="ml-2 opacity-40">(OS default handler)</span>
+                        {/if}
+                    </div>
+                </div>
+
+                <!-- Step 5: post-script -->
+                <div class="flex flex-col gap-1">
+                    <span class="text-[9px] font-bold uppercase opacity-50">Steps 5–6 — Wait + Post-Script</span>
+                    <div class="rounded bg-black/30 px-3 py-2">
+                        <div class="mb-1 opacity-50">sleep({test_mode_popup_data.profile.post_delay_ms ?? 2000}ms)</div>
+                        {#if test_mode_popup_data.profile.post_script}
+                            {#if test_mode_popup_data.profile.post_script.startsWith('shell:')}
+                                <div class="mb-1 opacity-50 text-[9px]">native.run_cmd() [shell prefix]</div>
+                                <pre class="whitespace-pre-wrap break-all text-yellow-300">{test_mode_popup_data.profile.post_script.slice(6)}</pre>
+                            {:else}
+                                <div class="mb-1 opacity-50 text-[9px]">native.run_osascript() [AppleScript]</div>
+                                <pre class="whitespace-pre-wrap text-purple-300">{test_mode_popup_data.profile.post_script}</pre>
+                            {/if}
+                        {:else}
+                            <span class="opacity-40">no post_script</span>
+                        {/if}
+                    </div>
+                </div>
+
+            </div><!-- end scroll -->
+        </div>
+    </div>
+{/if}