docs: add support page (#9555)

This adds a support page that can redirect users to the right channel
and answers some common questions.

Related-to: MRGFY-6056

Author: jd

src/components/Footer/footer.ts

@@ -96,7 +96,7 @@ export const helpCategory: Category = {
     },
     {
       text: 'Support',
-      href: 'mailto:support@mergify.com',
+      href: 'https://docs.mergify.com/support/',
     },
     {
       text: 'Privacy Policy',

src/content/docs/index.mdx

@@ -14,7 +14,7 @@ import { BiRuler, BiBadgeCheck, BiCut, BiSolidCoinStack } from 'react-icons/bi';
 import { TbPackages, TbGitBranch, TbTopologyStarRing3 } from 'react-icons/tb';
 import { TiFlowParallel } from 'react-icons/ti';
 import { FaUserShield, FaRegLightbulb, FaGear, FaTrafficLight, FaRegCirclePause, FaBug, FaMoneyBill1, FaSnowflake, FaStairs, FaDiagramProject } from 'react-icons/fa6';
-import { FaShieldAlt } from 'react-icons/fa';
+import { FaLifeRing, FaShieldAlt } from 'react-icons/fa';
 import { AiOutlineDeploymentUnit, AiOutlineFile, AiOutlineApi } from 'react-icons/ai';
 import { LiaShareAltSolid } from 'react-icons/lia';
 import { FiType } from 'react-icons/fi';
@@ -219,6 +219,9 @@ import { SlRefresh, SlSpeedometer } from 'react-icons/sl';
     <Docset title="Security" path="/security" icon={FaShieldAlt}>
       Security & permissions.
     </Docset>
+    <Docset title="Support" path="/support" icon={FaLifeRing}>
+      Contact channels & response goals.
+    </Docset>
     <Docset title="Billing" path="/billing" icon={FaMoneyBill1}>
       Plans & billing model.
     </Docset>

src/content/docs/support.mdx

@@ -0,0 +1,63 @@
+---
+title: Support
+description: Learn how to reach the Mergify support team, understand coverage, and explore enhanced support options.
+---
+
+At Mergify, we treat support as a core part of the product experience. Our goal
+is to keep your merge automation running smoothly by making it simple to contact
+the right team, set expectations, and understand the additional services
+available to larger organizations.
+
+## Contact Support Immediately
+
+If you are stuck, use one of the following channels:
+
+1. **Email:** <a href="mailto:[email protected]">[email protected]</a>.
+  Include the affected repository, pull request number, and a short description
+  (screenshots/log excerpts encouraged) so we can reproduce quickly.
+
+2. **In-app ticket:** From the Mergify dashboard, go to **Help → Contact
+  support** to submit a request. We automatically attach account context, which
+  speeds up triage.
+
+3. **Status follow-up:** Track platform availability at <a
+  href="https://status.mergify.com">status.mergify.com</a> and reference
+  incident IDs in your ticket for targeted updates.
+
+These options are available to every Mergify user.
+
+## Support Overview
+
+We provide assistance to authorized users directly through the service as well as by email. While
+resolution times can vary depending on complexity, our team commits to best-effort responses within
+one (1) business day for every incoming request. You will always receive a human acknowledgement
+confirming the scope and next steps.
+
+Enterprise plans unlock additional collaboration channels beyond the default email queue:
+
+- **Dedicated Slack channel:** Eligible enterprise customers receive a shared
+  Slack channel with the Mergify team for higher-touch incident response,
+  proactive reviews, and faster iteration.
+
+- **Named support contacts:** We partner with your engineering leads to keep
+  context warm and reduce time to resolution on recurring workflows.
+
+Reach out to your account manager if you would like to enable or adjust these enterprise options.
+
+## Premium Support
+
+Organizations that need round-the-clock coverage can subscribe to our optional 24/7 Premium Support
+package. This add-on provides prioritized routing, after-hours incident handling, and direct access
+to on-call engineers. Contact <a href="mailto:[email protected]">[email protected]</a> to scope the
+package and ensure it matches your operational requirements.
+
+## What to Expect
+
+When you open a support request, we:
+
+1. Acknowledge the ticket and confirm the scope within one business day.
+2. Investigate using the artifacts you provided and any telemetry available on our side.
+3. Publish corrective updates when needed and confirm the outcome with you.
+
+If a request requires product changes or in-depth consulting, we will clearly
+outline the effort and any additional agreement needed before proceeding.

src/content/navItems.tsx

@@ -13,7 +13,7 @@ import {
   BsRocket,
   BsStack,
 } from 'react-icons/bs';
-import { FaHome, FaRadiation, FaRegListAlt, FaShieldAlt } from 'react-icons/fa';
+import { FaHome, FaLifeRing, FaRadiation, FaRegListAlt, FaShieldAlt } from 'react-icons/fa';
 import {
   FaBug,
   FaCircleXmark,
@@ -337,6 +337,7 @@ const navItems: NavItem[] = [
   },
   { title: 'Stacks', path: '/stacks', icon: BsStack },
   { title: 'Security', path: '/security', icon: FaShieldAlt },
+  { title: 'Support', path: '/support', icon: FaLifeRing },
   { title: 'Badge', path: '/badge', icon: BiBadgeCheck },
   { title: 'Billing', path: '/billing', icon: FaMoneyBill1 },
   { title: 'Changelog', path: '/changelog', icon: FaRegListAlt },