diff --git a/documentation/MODULE__AE_Events_PressMgmt_Launcher.md b/documentation/MODULE__AE_Events_PressMgmt_Launcher.md
index c66bf3d2..3b37e31a 100644
--- a/documentation/MODULE__AE_Events_PressMgmt_Launcher.md
+++ b/documentation/MODULE__AE_Events_PressMgmt_Launcher.md
@@ -326,7 +326,8 @@ immediately. See `PROJECT__AE_Events_Launcher_Native_integration.md` Section 8.
 These are the initial built-in defaults shipped with the Launcher. They are the Svelte-side
 fallbacks used when neither device config nor event config defines a profile for the file
 extension. Each canonical profile can have multiple extension aliases. `post_delay_ms` is part
-of the profile object, so a device-specific `launch_profiles` entry can override it later.
+of the profile object, so a device-specific `other_json.launcher.post_delay_ms` override can
+tune it later without changing the profile table.
 
 | Profile name | Extension aliases | Default app | Display mode | Post delay | Notes |
 |---|---|---|---|---|---|
diff --git a/documentation/PROJECT__AE_Events_Launcher_Native_integration.md b/documentation/PROJECT__AE_Events_Launcher_Native_integration.md
index 331569a1..c80153d3 100644
--- a/documentation/PROJECT__AE_Events_Launcher_Native_integration.md
+++ b/documentation/PROJECT__AE_Events_Launcher_Native_integration.md
@@ -202,9 +202,10 @@ The native layer should not invent or guess a default launch path.
 
 The built-in defaults are organized as canonical profile names plus extension aliases. That
 lets multiple file types share one profile without repeating the same app/script details.
-The profile object also carries `post_delay_ms`, so a device-specific `launch_profiles`
-override can tune the delay without changing the bridge contract. URL-based presentations
-remain a special pseudo-extension handled separately from the cache open flow.
+The profile object also carries `post_delay_ms`, and a device-specific
+`other_json.launcher.post_delay_ms` override can tune the delay without changing the bridge
+contract. URL-based presentations remain a special pseudo-extension handled separately from
+the cache open flow.
 
 ### Native Template Formats
 
diff --git a/documentation/TODO__Agents.md b/documentation/TODO__Agents.md
index a7f647d7..aec94c90 100644
--- a/documentation/TODO__Agents.md
+++ b/documentation/TODO__Agents.md
@@ -20,6 +20,8 @@ guessing defaults.
 - [x] `native:copy-from-cache-to-temp` primitive added — copy to tmp, caller decides launch
 - [x] `native:launch-from-cache` executes a provided `native_template` string — AppleScript or `shell:` prefix; no Electron-side fallback
 - [x] `get_launch_profile()` in `launcher_file_cont.svelte` reads from device config then event config; resolves to a `native_template` string and passes it to `launch_from_cache`
+- [x] Built-in Launcher defaults refactored into canonical profile names plus extension aliases
+- [x] Device-level Launch Timing section added under Launcher Configuration → Device, with `other_json.launcher.post_delay_ms` override
 
 **Svelte-side migration — remaining before May 26:**
 - [ ] **[Launcher] Built-in Svelte default profiles** — move the built-in presentation/media
diff --git a/src/lib/ae_events/ae_launcher__default_launch_profiles.ts b/src/lib/ae_events/ae_launcher__default_launch_profiles.ts
index 565eab18..5c57917b 100644
--- a/src/lib/ae_events/ae_launcher__default_launch_profiles.ts
+++ b/src/lib/ae_events/ae_launcher__default_launch_profiles.ts
@@ -43,7 +43,7 @@ export interface LaunchProfile {
     post_script?: string;
     /**
      * Milliseconds to wait after open_cmd before running post_script.
-     * Default: 2000. Can be overridden per device via launch_profiles.
+     * Default: 2000. Can be overridden per device via other_json.launcher.post_delay_ms.
      */
     post_delay_ms?: number;
 
diff --git a/src/lib/stores/ae_events_stores__launcher_defaults.ts b/src/lib/stores/ae_events_stores__launcher_defaults.ts
index c357d023..4bc9155b 100644
--- a/src/lib/stores/ae_events_stores__launcher_defaults.ts
+++ b/src/lib/stores/ae_events_stores__launcher_defaults.ts
@@ -38,6 +38,7 @@ export interface LauncherLocState {
     show_section__controller: boolean;
     section_state__health: SectionState;
     section_state__native_os: SectionState;
+    section_state__launch_timing: SectionState;
     section_state__sync_timers: SectionState;
     section_state__updates: SectionState;
     section_state__controller: SectionState;
@@ -158,6 +159,7 @@ export const launcher_loc_defaults: LauncherLocState = {
     // Values: 'collapsed' | 'auto' | 'pinned'
     section_state__health: 'auto',
     section_state__native_os: 'collapsed',
+    section_state__launch_timing: 'collapsed',
     section_state__sync_timers: 'collapsed',
     section_state__updates: 'collapsed',
     section_state__controller: 'auto',
diff --git a/src/routes/events/[event_id]/(launcher)/cfg_components/launcher_cfg_launch_timing.svelte b/src/routes/events/[event_id]/(launcher)/cfg_components/launcher_cfg_launch_timing.svelte
new file mode 100644
index 00000000..cfd240ae
--- /dev/null
+++ b/src/routes/events/[event_id]/(launcher)/cfg_components/launcher_cfg_launch_timing.svelte
@@ -0,0 +1,223 @@
+<script lang="ts">
+import { ae_api, ae_loc } from '$lib/stores/ae_stores';
+import { events_func } from '$lib/ae_events/ae_events_functions';
+import { events_loc } from '$lib/stores/ae_events_stores';
+import Launcher_Cfg_Section from './launcher_cfg_section.svelte';
+import { AlarmClock, RotateCcw, Save, Timer } from '@lucide/svelte';
+
+interface Props {
+    on_expand?: () => void;
+}
+
+let { on_expand }: Props = $props();
+
+type NativeDeviceLike = {
+    event_device_id?: string;
+    id?: string;
+    other_json?: string | Record<string, unknown> | null;
+    post_delay_ms?: number | string | null;
+    [key: string]: unknown;
+};
+
+let delay_ms_input = $state('');
+let save_status = $state('');
+let last_device_id: string | null = null;
+
+function get_native_device(): NativeDeviceLike | null {
+    const store_loc = $ae_loc as { native_device?: NativeDeviceLike };
+    return store_loc.native_device ?? null;
+}
+
+function get_device_id(): string | null {
+    const native_device = get_native_device();
+    return native_device?.event_device_id ?? native_device?.id ?? null;
+}
+
+function parse_other_json(raw_json: unknown): Record<string, unknown> {
+    if (!raw_json) return {};
+    if (typeof raw_json === 'object') {
+        return { ...(raw_json as Record<string, unknown>) };
+    }
+    if (typeof raw_json !== 'string') return {};
+    try {
+        const parsed = JSON.parse(raw_json);
+        return parsed && typeof parsed === 'object' ? { ...parsed } : {};
+    } catch {
+        return {};
+    }
+}
+
+function get_current_delay_ms(): number | null {
+    const native_device = get_native_device();
+    const parsed_other_json = parse_other_json(native_device?.other_json);
+    const launcher_cfg =
+        (parsed_other_json.launcher as Record<string, unknown> | undefined) ?? {};
+    const raw_delay = launcher_cfg.post_delay_ms;
+    const parsed_delay =
+        typeof raw_delay === 'string'
+            ? Number(raw_delay)
+            : typeof raw_delay === 'number'
+                ? raw_delay
+                : Number.NaN;
+    return Number.isFinite(parsed_delay) && parsed_delay >= 0
+        ? parsed_delay
+        : null;
+}
+
+function sync_from_device() {
+    const device_id = get_device_id();
+    if (device_id === last_device_id) return;
+
+    last_device_id = device_id;
+    delay_ms_input = get_current_delay_ms() === null ? '' : String(get_current_delay_ms());
+}
+
+sync_from_device();
+
+$effect(() => {
+    sync_from_device();
+});
+
+function build_other_json(delay_value: number | null): string {
+    const native_device = get_native_device();
+    const other_json = parse_other_json(native_device?.other_json);
+    const launcher_cfg = {
+        ...((other_json.launcher as Record<string, unknown> | undefined) ?? {})
+    };
+
+    if (delay_value === null) {
+        delete launcher_cfg.post_delay_ms;
+    } else {
+        launcher_cfg.post_delay_ms = delay_value;
+    }
+
+    if (Object.keys(launcher_cfg).length > 0) {
+        other_json.launcher = launcher_cfg;
+    } else {
+        delete other_json.launcher;
+    }
+
+    return JSON.stringify(other_json);
+}
+
+async function save_delay_override() {
+    const device_id = get_device_id();
+    if (!device_id) {
+        save_status = 'No native device loaded';
+        return;
+    }
+
+    const trimmed = delay_ms_input.trim();
+    let delay_value: number | null = null;
+
+    if (trimmed !== '') {
+        const parsed = Number(trimmed);
+        if (!Number.isFinite(parsed) || parsed < 0) {
+            save_status = 'Enter a valid non-negative delay';
+            return;
+        }
+        delay_value = Math.round(parsed);
+    }
+
+    save_status = 'Saving...';
+    const result = await events_func.update_ae_obj__event_device({
+        api_cfg: $ae_api,
+        event_device_id: device_id,
+        data_kv: {
+            other_json: build_other_json(delay_value)
+        },
+        log_lvl: 0
+    });
+
+    if (!result) {
+        save_status = 'Save failed';
+        setTimeout(() => (save_status = ''), 3000);
+        return;
+    }
+
+    const store_loc = $ae_loc as { native_device?: NativeDeviceLike };
+    store_loc.native_device = {
+        ...get_native_device(),
+        ...result,
+        other_json: build_other_json(delay_value)
+    };
+
+    save_status = delay_value === null ? 'Reset to profile defaults' : 'Saved';
+    setTimeout(() => (save_status = ''), 3000);
+}
+
+async function reset_delay_override() {
+    delay_ms_input = '';
+    await save_delay_override();
+}
+</script>
+
+<Launcher_Cfg_Section
+    title="Launch Timing"
+    icon={Timer}
+    bind:state={$events_loc.launcher.section_state__launch_timing}
+    {on_expand}
+    description="Device-level post-open delay override">
+    {#if $ae_loc.edit_mode && !$ae_loc.is_native}
+        <div
+            class="bg-warning-500/10 border-warning-500/30 mb-1 flex items-center gap-2 rounded-lg border px-2 py-1.5">
+            <AlarmClock size="0.75em" class="text-warning-500" />
+            <span
+                class="text-warning-500 text-[9px] font-bold tracking-wide uppercase"
+                >Dev Preview — visible for layout only; save requires the native
+                device record</span>
+        </div>
+    {/if}
+
+    <div class="flex flex-col gap-2">
+        <p class="ml-1 text-[9px] font-bold uppercase opacity-50">
+            Native Open Delay
+        </p>
+        <p class="ml-1 text-[10px] leading-snug opacity-60">
+            Overrides the built-in `post_delay_ms` for this device. Leave blank
+            to use the profile default for each extension/profile.
+        </p>
+
+        <div class="grid grid-cols-[1fr_auto] gap-2">
+            <input
+                type="number"
+                min="0"
+                step="100"
+                bind:value={delay_ms_input}
+                placeholder="Use profile defaults"
+                class="input input-sm preset-tonal-surface h-8 text-[10px]" />
+
+            <button
+                type="button"
+                onclick={save_delay_override}
+                class="btn btn-sm preset-filled-primary h-8 px-3 text-[10px] font-bold"
+                disabled={!get_device_id()}>
+                <Save size="0.8em" class="mr-1" /> Save
+            </button>
+        </div>
+
+        <div class="flex items-center justify-between gap-2 px-1 text-[9px] opacity-60">
+            <span>
+                Current:
+                {#if get_current_delay_ms() === null}
+                    profile defaults
+                {:else}
+                    {get_current_delay_ms()} ms
+                {/if}
+            </span>
+            <button
+                type="button"
+                onclick={reset_delay_override}
+                class="btn btn-xs preset-tonal-surface h-6 px-2 text-[9px]"
+                disabled={!get_device_id()}>
+                <RotateCcw size="0.75em" class="mr-1" /> Reset
+            </button>
+        </div>
+
+        {#if save_status}
+            <div class="text-primary-500 text-center text-[9px] italic">
+                {save_status}
+            </div>
+        {/if}
+    </div>
+</Launcher_Cfg_Section>
\ No newline at end of file
diff --git a/src/routes/events/[event_id]/(launcher)/launcher_cfg.svelte b/src/routes/events/[event_id]/(launcher)/launcher_cfg.svelte
index be4de9be..bf7daba6 100644
--- a/src/routes/events/[event_id]/(launcher)/launcher_cfg.svelte
+++ b/src/routes/events/[event_id]/(launcher)/launcher_cfg.svelte
@@ -32,6 +32,7 @@ import Launcher_Cfg_Controller from './cfg_components/launcher_cfg_controller.sv
 import Launcher_Cfg_Screen_Saver from './cfg_components/launcher_cfg_screen_saver.svelte';
 import Launcher_Cfg_App_Modes from './cfg_components/launcher_cfg_app_modes.svelte';
 import Launcher_Cfg_Local_Actions from './cfg_components/launcher_cfg_local_actions.svelte';
+import Launcher_Cfg_Launch_Timing from './cfg_components/launcher_cfg_launch_timing.svelte';
 import {
     Bug,
     Code,
@@ -150,7 +151,7 @@ function handle_section_expand(current_key: string) {
     </div>
 
     <!-- Tab Content -->
-    <div class="flex min-h-[400px] w-full flex-col gap-2">
+    <div class="flex min-h-100 w-full flex-col gap-2">
         <!-- SETUP: everything onsite operators need day-to-day -->
         {#if active_tab === 'setup'}
             <div
@@ -180,6 +181,8 @@ function handle_section_expand(current_key: string) {
                         on_expand={() => handle_section_expand('health')} />
                     <Launcher_Cfg_Native_OS
                         on_expand={() => handle_section_expand('native_os')} />
+                    <Launcher_Cfg_Launch_Timing
+                        on_expand={() => handle_section_expand('launch_timing')} />
                     {#if $ae_loc.is_native}
                         <Launcher_Cfg_Updates
                             on_expand={() =>
diff --git a/src/routes/events/[event_id]/(launcher)/launcher_file_cont.svelte b/src/routes/events/[event_id]/(launcher)/launcher_file_cont.svelte
index e4b21710..862525b4 100644
--- a/src/routes/events/[event_id]/(launcher)/launcher_file_cont.svelte
+++ b/src/routes/events/[event_id]/(launcher)/launcher_file_cont.svelte
@@ -128,10 +128,34 @@ function get_launch_profile(
     extension: string,
     file_obj?: any
 ): LaunchProfile {
-    const device_profiles = ($ae_loc as any).native_device?.launch_profiles ?? null;
+    const native_device = ($ae_loc as any).native_device ?? null;
+    const device_profiles =
+        native_device?.other_json?.launcher?.launch_profiles ??
+        native_device?.launch_profiles ??
+        null;
     const local_profiles = ($events_loc as any).launcher?.launch_profiles ?? null;
     const display_override = file_obj?.cfg_json?.display_override ?? null;
-    return resolve_launch_profile(extension, display_override, device_profiles, local_profiles);
+    const profile = resolve_launch_profile(
+        extension,
+        display_override,
+        device_profiles,
+        local_profiles
+    );
+
+    const device_post_delay_ms =
+        native_device?.other_json?.launcher?.post_delay_ms ??
+        native_device?.post_delay_ms ??
+        null;
+    const parsed_delay_ms =
+        typeof device_post_delay_ms === 'string'
+            ? Number(device_post_delay_ms)
+            : device_post_delay_ms;
+
+    if (Number.isFinite(parsed_delay_ms) && parsed_delay_ms >= 0) {
+        profile.post_delay_ms = parsed_delay_ms;
+    }
+
+    return profile;
 }
 
 onMount(() => {