feat(ux): B3.5 + B3.14 — sparkline range picker + shutdown copy

B3.5: settings.sparklineRangeDays (added schema-only in B2b) now drives
the recentCompletions fetch via a reactive effect; new segmented control
in Settings → Tasks lets the user pick 7 / 28 / 90 days. Default 7.

B3.14: /shutdown "Open loops" header softened to "Still here", body
copy updated to remove pressure ("Just naming them helps — nothing to
do here"), truncation tail drops the count. The whole "Still here"
section is now gated by a fresh-start derived flag — when B3.1 lands
and writes reentryFreshStartUntil, this surface auto-suppresses.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/pages/SettingsPage.svelte

@@ -814,6 +814,33 @@
     }
   });
 
+  // B3.5 — sparkline range picker. SegmentedButton works on string
+  // options; settings.sparklineRangeDays is the integer 7 / 28 / 90.
+  // Mirror in both directions so changes from either side propagate.
+  let sparklineRangeLabel = $state(
+    settings.sparklineRangeDays === 90
+      ? "90 days"
+      : settings.sparklineRangeDays === 28
+        ? "28 days"
+        : "7 days",
+  );
+  $effect(() => {
+    const next = sparklineRangeLabel === "90 days" ? 90 : sparklineRangeLabel === "28 days" ? 28 : 7;
+    if (settings.sparklineRangeDays !== next) {
+      settings.sparklineRangeDays = next;
+    }
+  });
+  $effect(() => {
+    const label = settings.sparklineRangeDays === 90
+      ? "90 days"
+      : settings.sparklineRangeDays === 28
+        ? "28 days"
+        : "7 days";
+    if (sparklineRangeLabel !== label) {
+      sparklineRangeLabel = label;
+    }
+  });
+
   async function downloadModel(size) {
     downloadingModel = size;
     downloadProgress = 0;
@@ -1575,8 +1602,29 @@
             <Toggle
               bind:checked={settings.showMomentumSparkline}
               label="Show momentum sparkline"
-              description="A tiny chart of the last 7 days' completion counts, shown on the Tasks header. Never counts against you."
+              description="A tiny chart of recent completion counts, shown on the Tasks header. Never counts against you."
             />
+
+            <!-- B3.5 — sparkline range picker. The integer field
+                 settings.sparklineRangeDays drives the
+                 list_recent_completions_cmd days argument via a
+                 reactive effect in completionStats.svelte. The
+                 SegmentedButton component works on string options, so
+                 we marshal between display labels and the integer
+                 the rest of the system expects via a local mirror. -->
+            {#if settings.showMomentumSparkline}
+              <div class="mt-5 pl-1 animate-fade-in">
+                <p class="text-[10px] font-medium text-text-tertiary uppercase tracking-wider mb-2">Sparkline range</p>
+                <SegmentedButton
+                  options={["7 days", "28 days", "90 days"]}
+                  bind:value={sparklineRangeLabel}
+                  size="small"
+                />
+                <p class="text-[11px] text-text-tertiary mt-2">
+                  How far back the sparkline looks. Wider windows show longer-arc trends; the narrower window stays close to right-now.
+                </p>
+              </div>
+            {/if}
           </div>
         {/if}
       </div>

src/lib/pages/ShutdownRitualPage.svelte

@@ -17,9 +17,21 @@
   import { onMount } from 'svelte';
   import { invoke } from '@tauri-apps/api/core';
   import { Moon, ArrowLeft } from 'lucide-svelte';
-  import { page } from '$lib/stores/page.svelte.js';
+  import { page, settings } from '$lib/stores/page.svelte.js';
   import { hasTauriRuntime } from '$lib/utils/runtime.js';
 
+  // B3.14 — fresh-start gate. When B3.1 lands and stamps
+  // settings.reentryFreshStartUntil with a future timestamp (the user
+  // has been away long enough to warrant a "yesterday is sealed"
+  // window), the "Still here" reflection is suppressed so the shutdown
+  // surface doesn't drag forward what the fresh-start window is
+  // explicitly inviting the user to set down. The `!!` guards against
+  // the legacy null and any malformed string.
+  const inFreshStartWindow = $derived(
+    !!settings.reentryFreshStartUntil &&
+      new Date(settings.reentryFreshStartUntil).getTime() > Date.now(),
+  );
+
   interface TaskRow {
     id: string;
     text: string;
@@ -110,29 +122,36 @@
         {/if}
       </section>
 
-      <!-- Read-only reflection. The Tasks page is where things get done. -->
-      <section class="mb-8">
-        <h2 class="text-[10px] font-medium text-text-tertiary uppercase tracking-wider mb-2">Open loops</h2>
-        {#if openLoops.length === 0}
-          <p class="text-[12px] text-text-secondary">Nothing in the list.</p>
-        {:else}
-          <p class="text-[11px] text-text-tertiary mb-3">
-            These are still here. Naming them silences the loop — you don't have to act now.
-          </p>
-          <ul class="flex flex-col gap-1">
-            {#each openLoops.slice(0, 12) as task (task.id)}
-              <li class="text-[12px] text-text-secondary truncate">
-                {task.text}
-              </li>
-            {/each}
-            {#if openLoops.length > 12}
-              <li class="text-[11px] text-text-tertiary pt-1">
-                …and {openLoops.length - 12} more.
-              </li>
-            {/if}
-          </ul>
-        {/if}
-      </section>
+      <!-- Read-only reflection. The Tasks page is where things get done.
+           B3.14 — softened header + body copy (no pressure framing); the
+           truncation tail no longer emits a count, so the user isn't
+           presented with a "and 27 more" tally on the way out the door.
+           Whole section is suppressed inside an active fresh-start
+           window — see inFreshStartWindow above. -->
+      {#if !inFreshStartWindow}
+        <section class="mb-8">
+          <h2 class="text-[10px] font-medium text-text-tertiary uppercase tracking-wider mb-2">Still here</h2>
+          {#if openLoops.length === 0}
+            <p class="text-[12px] text-text-secondary">Nothing in the list.</p>
+          {:else}
+            <p class="text-[11px] text-text-tertiary mb-3">
+              Still on the list. Just naming them helps — nothing to do here.
+            </p>
+            <ul class="flex flex-col gap-1">
+              {#each openLoops.slice(0, 12) as task (task.id)}
+                <li class="text-[12px] text-text-secondary truncate">
+                  {task.text}
+                </li>
+              {/each}
+              {#if openLoops.length > 12}
+                <li class="text-[11px] text-text-tertiary pt-1">
+                  …the rest is on the Tasks page when you want it.
+                </li>
+              {/if}
+            </ul>
+          {/if}
+        </section>
+      {/if}
 
       <!-- Physical reset + intentional cue. Evidence: Newport shutdown
            template, ~40% rumination reduction in psychological-detachment

src/lib/stores/completionStats.svelte.ts

@@ -1,4 +1,4 @@
-// Phase 8 store for forgiving gamification. Owns the last-7-days series
+// Phase 8 store for forgiving gamification. Owns the recent-days series
 // of completion counts rendered by the Tasks-page badge + sparkline.
 //
 // Refresh triggers:
@@ -9,15 +9,24 @@
 //  - kon:task-deleted    (new event, emitted by deleteTask in Task 10)
 //  - window focus        (for day rollover while the app stayed open
 //                         past midnight)
+//  - settings.sparklineRangeDays change (B3.5 picker — re-fetches with
+//    the new window so the sparkline reflects the chosen range)
 //
 // We deliberately avoid polling. Every path that changes a row's
 // done state or deletes a row emits one of the events above.
 
 import { invoke } from "@tauri-apps/api/core";
 import { hasTauriRuntime } from "$lib/utils/runtime.js";
+import { settings } from "$lib/stores/page.svelte.js";
 import type { DailyCompletionCount } from "$lib/types/app";
 
-const DAYS = 7;
+// B3.5 — fall back to 7 if the field is missing (e.g. the settings blob
+// hasn't been migrated yet on first launch). The supported set is
+// 7 / 28 / 90 per SparklineRangeDays.
+function currentRangeDays(): number {
+  const raw = settings?.sparklineRangeDays;
+  return raw === 28 || raw === 90 ? raw : 7;
+}
 
 export const recentCompletions = $state<DailyCompletionCount[]>([]);
 
@@ -34,7 +43,7 @@ export async function refresh(): Promise<void> {
   try {
     const series = await invoke<DailyCompletionCount[]>(
       "list_recent_completions_cmd",
-      { days: DAYS },
+      { days: currentRangeDays() },
     );
     recentCompletions.splice(0, recentCompletions.length, ...series);
   } catch (err) {
@@ -53,6 +62,20 @@ if (typeof window !== "undefined") {
   window.addEventListener("kon:task-deleted", handler);
   window.addEventListener("focus", handler);
 
+  // B3.5 — re-fetch when the user picks a different sparkline window.
+  // $effect only runs inside components, so we use a lightweight $state
+  // tracker via $effect.root. This is the standard Svelte 5 pattern for
+  // module-scope reactive subscriptions.
+  $effect.root(() => {
+    $effect(() => {
+      // Subscribe to the field. Reading it inside the effect creates the
+      // dependency; the body re-runs whenever the user changes the picker.
+      const _days = settings?.sparklineRangeDays;
+      void _days;
+      refresh().catch(() => {});
+    });
+  });
+
   if (hasTauriRuntime()) {
     refresh().catch(() => {});
   }