feat(rituals): Phase 5 — morning triage, evening wind-down, autostart

Three opt-in rituals, all default OFF. Research-anchored (Barkley's
point-of-performance, Sweller cognitive-load theory, Newport shutdown
ritual, Gollwitzer implementation intentions, Thaler/Sunstein nudge
with informed consent for the ADHD audience).

Morning triage: modal gated on ritualsMorning toggle, configurable
trigger time (default 08:00 to respect ADHD sleep inertia rather than
the spec's 06:00), "pick up to three for today" with a gentle swap
message on the fourth attempt. Skip sets last-shown-today so it never
re-prompts the same calendar day. last-shown persists via kon_storage.

Evening wind-down: dedicated page, user-triggered only (tray menu +
Settings button). Mechanical closure + physical reset + intentional
cue — the whole Newport template. Open loops are read-only reflection;
Tasks page owns transactions. Copy is additive throughout: "you
finished X today", never "you didn't finish Y".

Autostart: tauri-plugin-autostart registered (LaunchAgent on macOS,
.desktop on Linux, registry Run on Windows). No bespoke Rust commands
— frontend calls the plugin's invoke-handlers directly. Toggle in
Settings is one-way (click → OS call → state update) to avoid the UI
lying during the round-trip. First-run presents a forced-choice prompt
for all three options, with "skip all" escape hatches per step.

Copy audit against RSD literature: no "overdue", "failed", or
day-to-day comparison framing anywhere in ritual surfaces.

Post-v0.1 ideas captured in the roadmap: calendar integration
(read-only ICS as interim, cloud sync parked) and right-click-to-task
(in-app simple, system-wide a separate phase).

src/lib/pages/SettingsPage.svelte

@@ -674,6 +674,44 @@
     }
   }
 
+  // Phase 5 rituals. Autostart state mirrors the OS-level entry managed
+  // by tauri-plugin-autostart; reading via invoke keeps the toggle
+  // honest even if the user has edited their .desktop file manually.
+  let autostartSyncing = $state(false);
+
+  async function setLaunchAtLogin(nextOn: boolean) {
+    autostartSyncing = true;
+    try {
+      const plugin = await import("@tauri-apps/plugin-autostart");
+      if (nextOn) {
+        await plugin.enable();
+      } else {
+        await plugin.disable();
+      }
+      settings.launchAtLogin = nextOn;
+    } catch (err) {
+      toasts.warn("Could not update autostart", String(err));
+      // Re-read to correct the UI if we failed halfway.
+      try {
+        const plugin = await import("@tauri-apps/plugin-autostart");
+        settings.launchAtLogin = await plugin.isEnabled();
+      } catch { /* best-effort */ }
+    } finally {
+      autostartSyncing = false;
+    }
+  }
+
+  async function syncAutostartFromOs() {
+    try {
+      const plugin = await import("@tauri-apps/plugin-autostart");
+      settings.launchAtLogin = await plugin.isEnabled();
+    } catch { /* best-effort on browser / first load */ }
+  }
+
+  function openWindDown() {
+    page.current = "shutdown";
+  }
+
   onMount(async () => {
     try {
       await refreshRuntimeCapabilities();
@@ -692,6 +730,10 @@
     // the user opens the Audio section.
     refreshAudioDevices();
 
+    // Phase 5: read the live OS-level autostart state so the toggle
+    // reflects reality rather than last-saved intent.
+    syncAutostartFromOs();
+
     // Vocabulary is loaded reactively via the $effect that tracks the
     // active profile id (set once profilesStore.load() resolves in the
     // root layout). No eager fetch needed here.
@@ -1396,6 +1438,100 @@
         {/if}
       </div>
 
+      <!-- Rituals (Phase 5 roadmap) -->
+      <div class="border-b border-border-subtle">
+        <button
+          class="flex items-center justify-between w-full py-4 px-5 text-left"
+          onclick={() => openSection = openSection === 'rituals' ? null : 'rituals'}
+        >
+          <h3 class="font-display text-[18px] italic text-text">Rituals</h3>
+          <span class="text-text-tertiary text-[16px] leading-none">{openSection === 'rituals' ? '−' : '+'}</span>
+        </button>
+        {#if openSection === 'rituals'}
+          <div class="px-5 pb-5 animate-fade-in">
+            <p class="text-[11px] text-text-tertiary mb-4">
+              All off by default. Rituals only appear when you ask for them.
+            </p>
+
+            <Toggle
+              bind:checked={settings.ritualsMorning}
+              label="Morning triage"
+              description="On the first launch of the day after your set time, show a gentle pick-three modal drawn from open tasks. Skip any day without penalty."
+            />
+
+            {#if settings.ritualsMorning}
+              <div class="pl-1 py-3 animate-fade-in">
+                <label for="triage-time" class="block text-[10px] font-medium text-text-tertiary uppercase tracking-wider mb-2">
+                  Earliest triage time
+                </label>
+                <input
+                  id="triage-time"
+                  type="time"
+                  class="bg-bg-input border border-border rounded-lg px-3 py-1.5 text-[12px] text-text focus:border-accent focus:outline-none"
+                  bind:value={settings.ritualsMorningTime}
+                />
+                <p class="text-[11px] text-text-tertiary mt-2">
+                  ADHD sleep inertia is intense for the first 30–45 minutes after waking. Pick a time when you're genuinely ready to decide.
+                </p>
+              </div>
+            {/if}
+
+            <Toggle
+              bind:checked={settings.ritualsEvening}
+              label="Evening wind-down"
+              description="A reflective page you can open when you want to close the day. Not scheduled, never nagging."
+            />
+
+            {#if settings.ritualsEvening}
+              <div class="pl-1 py-3 animate-fade-in">
+                <button
+                  type="button"
+                  class="px-3 py-2 rounded-lg bg-bg-elevated border border-border text-[12px] text-text hover:border-accent"
+                  onclick={openWindDown}
+                >
+                  Open wind-down now
+                </button>
+              </div>
+            {/if}
+
+            <div class="mt-4 pt-4 border-t border-border-subtle">
+              <!-- One-way flow: click → OS call → state update. Can't use
+                   the standard Toggle because its bind:checked would
+                   race the autostart invoke and let the UI lie during
+                   the round-trip. -->
+              <div class="flex items-start gap-3 py-2.5">
+                <button
+                  class="relative mt-0.5 w-[38px] min-w-[38px] h-[22px] rounded-full flex-shrink-0
+                    {settings.launchAtLogin ? 'bg-accent shadow-[0_0_8px_rgba(232,168,124,0.25)]' : 'bg-bg-elevated'}
+                    active:scale-95 disabled:opacity-60"
+                  style="transition-duration: var(--duration-ui)"
+                  onclick={() => setLaunchAtLogin(!settings.launchAtLogin)}
+                  disabled={autostartSyncing}
+                  role="switch"
+                  aria-checked={settings.launchAtLogin}
+                  aria-label="Launch Corbie at login"
+                >
+                  <span
+                    class="absolute top-[3px] left-[3px] w-4 h-4 rounded-full bg-white shadow-sm
+                      {settings.launchAtLogin ? 'translate-x-[16px]' : 'translate-x-0'}"
+                    style="transition: transform var(--duration-ui) cubic-bezier(0.34, 1.56, 0.64, 1)"
+                  ></span>
+                </button>
+                <div class="flex-1 min-w-0">
+                  <p class="text-[13px] text-text leading-tight">Launch Corbie at login</p>
+                  <p class="text-[11px] text-text-tertiary mt-0.5 leading-snug">
+                    So Corbie is already there at the start of the day. Uses your OS's standard autostart — no background tricks.
+                  </p>
+                  {#if autostartSyncing}
+                    <p class="text-[11px] text-text-tertiary mt-1">Updating…</p>
+                  {/if}
+                </div>
+              </div>
+            </div>
+          </div>
+        {/if}
+      </div>
+
       <!-- Read aloud (Phase 4 roadmap) -->
       <div class="border-b border-border-subtle">
         <button