Add public help center with 10 topic pages and improve contractor/residence cards

- Create complete help center at /help with getting-started, residences, tasks,
  contractors, documents, sharing, dashboard, notifications, subscription, and
  account pages
- Add shared help components: sidebar, header, footer, article/section wrappers,
  screenshot placeholders, and tip/note/warning callouts
- Add /help to middleware public paths so it loads without auth
- Add Help Center link to landing page footer
- Link contractor import dialog to /help/sharing
- Make contractor cards fully clickable with consistent height
- Add clear button to contractor specialty filter
- Fix residence card height consistency in grid

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/help/contractors/page.tsx

@@ -0,0 +1,88 @@
+import { HelpArticle } from "@/components/help/help-article";
+import { HelpSection } from "@/components/help/help-section";
+import { HelpCallout } from "@/components/help/help-callout";
+import { ScreenshotPlaceholder } from "@/components/help/screenshot-placeholder";
+
+export default function ContractorsHelpPage() {
+  return (
+    <HelpArticle
+      title="Contractors"
+      description="Build your rolodex of trusted service providers. Store contact details, specialties, and share them with household members."
+    >
+      <HelpSection id="adding" title="Adding a Contractor">
+        <p>
+          Keep track of every plumber, electrician, landscaper, and handyman
+          you work with. Each contractor record stores their contact details and
+          specialty.
+        </p>
+        <ScreenshotPlaceholder alt="Add contractor form with name, phone, email, specialty, and notes" />
+        <ol className="list-decimal list-inside space-y-2 ml-1">
+          <li>Go to your <strong>Contractors</strong> list.</li>
+          <li>Tap <strong>Add Contractor</strong>.</li>
+          <li>Enter their name, phone number, and optionally email.</li>
+          <li>Select their specialty (plumbing, electrical, HVAC, etc.).</li>
+          <li>Add any notes about your experience with them.</li>
+        </ol>
+      </HelpSection>
+
+      <HelpSection id="specialties" title="Specialties">
+        <p>
+          Specialties help you quickly filter and find the right contractor for a
+          job. honeyDue comes with common home service categories:
+        </p>
+        <ul className="list-disc list-inside space-y-1 ml-1">
+          <li>Plumbing</li>
+          <li>Electrical</li>
+          <li>HVAC</li>
+          <li>Roofing</li>
+          <li>Landscaping</li>
+          <li>General Handyman</li>
+          <li>Pest Control</li>
+          <li>Cleaning</li>
+          <li>And more...</li>
+        </ul>
+        <ScreenshotPlaceholder alt="Contractor list filtered by specialty" />
+      </HelpSection>
+
+      <HelpSection id="favorites" title="Favorites">
+        <p>
+          Mark your go-to contractors as favorites for quick access. Favorited
+          contractors appear at the top of your list and are highlighted when
+          linking contractors to tasks.
+        </p>
+        <HelpCallout type="tip">
+          Tap the star icon on any contractor card to toggle their favorite status.
+        </HelpCallout>
+      </HelpSection>
+
+      <HelpSection id="sharing" title="Sharing & Importing">
+        <p>
+          Share your trusted contractors with friends, family, or new household
+          members using the <strong>.honeydue file format</strong>.
+        </p>
+        <ScreenshotPlaceholder alt="Contractor import dialog with file picker and preview" />
+        <p>
+          Export your contractors as a .honeydue file and send it to anyone.
+          They can import it into their own honeyDue account to instantly add
+          your recommended pros.
+        </p>
+        <p>
+          See the <a href="/help/sharing" className="text-[#6B8F71] underline underline-offset-2 hover:text-[#5A7A60]">Sharing guide</a> for
+          detailed export and import instructions.
+        </p>
+      </HelpSection>
+
+      <HelpSection id="linking" title="Linking to Tasks">
+        <p>
+          When creating or editing a task, you can link a contractor to it. This
+          creates a handy reference so you know who to call for that specific
+          maintenance item.
+        </p>
+        <p>
+          Contractors linked to tasks also appear in residence reports, giving
+          you a complete maintenance history with contact information.
+        </p>
+      </HelpSection>
+    </HelpArticle>
+  );
+}