docs: update technical documentation for recent code changes

[devin-ai-integration]

Summary

Combines four stacked documentation PRs into a single PR. All changes are content-only (MDX files in apps/web/content/docs/). No code changes.

Key documentation updates:

• apps/ai → apps/api rename: All references updated to reflect the consolidation (refactor: consolidate apps/ai into apps/api #3852). Includes "(formerly apps/ai)" hints for developers familiar with the old name.
• Support chat docs: In-app MCP-based support chat documented as primary bug reporting channel. support@hyprnote.com removed. GitHub link fixed (hyprnote/hyprnote → fastrepl/hyprnote).
• New env vars: 6 env vars added for support chat MCP server (GITHUB_BOT_*, SUPPORT_DATABASE_URL).
• New FAQ entries: macOS dock menu, AI chat full tab, multi-select bulk delete, auto-trigger enhancement, calendar event metadata, Tantivy search, OpenRouter routing, MCP architecture.
• Keyboard shortcuts: ⌘Q updated to show gauge visual overlay; ⌘⇧Q added as "Quit Completely".

Supersedes: #3801, #3847, #3889, #3931

Review & Testing Checklist for Human

• Verify MCP tool names match deployed code — PR lists specific tool names (search_issues, create_issue, add_comment, list_subscriptions, create_billing_portal_session). Cross-check against crates/api-support/src/mcp/tools/mod.rs on main.
• Verify in-app support chat UX flow — Multiple docs now say "click your profile icon in the sidebar and select Report Bug or Suggest Feature". Confirm this matches the actual desktop app UI.
• Verify keyboard shortcut behavior — Confirm ⌘Q (hold) shows a gauge visual and ⌘⇧Q quits completely.
• Confirm support@hyprnote.com removal is intentional — Email was removed from 14.bug-report.mdx in favor of the in-app chat.
• Spot-check new FAQ entries against app behavior — e.g., macOS dock "New Note" via right-click, multi-select with ⌘+click/⇧+click, auto-trigger summary after recording stops.

Recommended: deploy the docs preview and navigate through updated pages to confirm claims are accurate.

Notes

• All changes are AI-generated documentation based on code analysis of recent PRs. Factual accuracy of feature descriptions should be verified against the actual app.
• Requested by: @ComputelessComputer
• Link to Devin run

---

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR that start with 'DevinAI' or '@devin'.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment and CI monitoring

[netlify]

✅ Deploy Preview for hyprnote-storybook canceled.

Name	Link
🔨 Latest commit	8e19b1f
🔍 Latest deploy log	https://app.netlify.com/projects/hyprnote-storybook/deploys/698e7173d6da890008ae3e3b

[netlify]

✅ Deploy Preview for hyprnote ready!

Name	Link
🔨 Latest commit	8e19b1f
🔍 Latest deploy log	https://app.netlify.com/projects/hyprnote/deploys/698e71730f92e70008b8a0fb
😎 Deploy Preview	https://deploy-preview-3933--hyprnote.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.