feat(dashboard,cli): update-check frequency, GitHub star button, more resizable modals

Update-check frequency (end-to-end)
- Add `updateCheckFrequency: "manual" | "on-startup" | "daily" | "weekly"`
  to GlobalSettings (default: "daily").
- Backend `performUpdateCheck` honors the frequency: TTL = day/week,
  `manual` returns cache or empty without hitting npm, `on-startup`
  refreshes once per process lifetime then serves cache. `/refresh`
  route forces network regardless.
- Settings → Updates surfaces a working `<select>` for the cadence,
  disabled when auto-checks are off entirely.
- Tests: 4 new cases covering ttlForFrequency mapping, weekly window,
  manual semantics, on-startup once-per-process behavior.

TUI update notice
- Read cached update result synchronously on TUI startup. When an
  update is available, render a yellow notice line on the splash and
  a colored ● next to the version in the status bar.

Settings modal header polish
- Add "Star on GitHub" pill (icon + Star + cached star count from the
  GitHub API, 1h localStorage TTL) and "Help" button (opens project
  Discussions). Both link to the Runfusion/Fusion repo.
- Star button auto-hides after the user clicks it (intent = star),
  tracked in localStorage `fusion:github-star-clicked`.
- Settings → General gets a "Show Star on GitHub button" checkbox so
  users can hide it preemptively. New global setting
  `showGitHubStarButton: boolean` (default true) gates rendering.

More resizable modals
- Task Detail modal: 85vh default, resize: both, persisted via
  useModalResizePersist (key `fusion:task-detail-modal-size`).
- Quick Chat FAB: full 8-direction resize (4 corners + 4 edges) via
  pointer-event handlers; persisted to
  `fusion:quick-chat-size-<projectId>`. Each handle has the right
  cursor + role="separator" for accessibility.

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

packages/cli/src/commands/dashboard-tui/controller.ts

@@ -2,6 +2,7 @@ import os from "node:os";
 import v8 from "node:v8";
 import { execSync } from "node:child_process";
 import { appendFileSync } from "node:fs";
+import { getCachedUpdateStatus } from "../../update-cache.js";
 
 const TUI_DEBUG_LOG = process.env.FUSION_TUI_DEBUG_LOG;
 function tuiDebug(tag: string, data: Record<string, unknown>): void {
@@ -25,6 +26,7 @@ import type {
   DashboardState,
   InteractiveData,
   InteractiveView,
+  UpdateStatus,
 } from "./state.js";
 import { SECTION_ORDER } from "./state.js";
 
@@ -74,6 +76,7 @@ export class DashboardTUI {
   interactiveData: InteractiveData | null = null;
   interactiveView: InteractiveView = "board";
   interactiveInputLocked = false;
+  updateStatus: UpdateStatus | null = null;
 
   // Subscribers registered by the Ink App component.
   private subscribers: Set<() => void> = new Set();
@@ -112,6 +115,17 @@ export class DashboardTUI {
 
   constructor() {
     this.logBuffer = new LogRingBuffer();
+    // Read the update-check cache synchronously at construction time so the
+    // splash screen and status bar can render the notice immediately, without
+    // any network access.
+    const cached = getCachedUpdateStatus();
+    if (cached) {
+      this.updateStatus = {
+        updateAvailable: cached.updateAvailable,
+        currentVersion: cached.currentVersion,
+        latestVersion: cached.latestVersion,
+      };
+    }
   }
 
   // ── Subscription API (for Ink App) ────────────────────────────────────────
@@ -144,6 +158,7 @@ export class DashboardTUI {
       interactiveInputLocked: this.interactiveInputLocked,
       autoKillVitestOnPressure: this.autoKillVitestOnPressure,
       vitestKillThreshold: this.vitestKillThreshold,
+      updateStatus: this.updateStatus,
     };
     return this.cachedSnapshot;
   }
@@ -353,6 +368,11 @@ export class DashboardTUI {
     this.notify();
   }
 
+  setUpdateStatus(status: UpdateStatus | null): void {
+    this.updateStatus = status;
+    this.notify();
+  }
+
   addLog(entry: Omit<LogEntry, "timestamp">): void {
     // If the cursor was sitting on the most recent entry (or there were no
     // entries yet), keep it pinned to the new tail so live logs follow the