chore: migrate cursor rules to portable agent skills + mantine MCP guidance

* chore: migrate cursor rules to portable agent skills and add mantine MCP guidance

Replace Cursor-only .cursor/rules/*.mdc with Agent Skills open-standard
SKILL.md files in .agents/skills/ (canonical), mirrored to .cursor/skills/
and .claude/skills/ so they work across Claude Code, Cursor, Codex, and
OpenCode. Add mantine MCP server guidance to AGENTS.md and un-ignore
.agents/skills/ in .gitignore.

* refactor: single-source agent skills at .agents/skills

Cursor, Codex, and OpenCode all read .agents/skills/ natively, so the
.cursor/skills/ mirror was redundant. Claude Code reads .claude/skills/,
which is now a symlink back to .agents/skills/ so the content lives once.
Deletes .cursor/skills/ and converts .claude/skills/ to a symlink.

* chore: ship mantine MCP server via project-scoped .mcp.json

Declares the keyless @mantine/mcp-server in .mcp.json (Claude Code
project-scope standard, committable) and documents MCP server setup and
the mantine entry in AGENTS.md.

* chore: address coderabbit security-review and markdown lint findings

Add explicit security-review guidance before exposing MCP tools and label
plain-text code fences to satisfy markdownlint MD040.

.agents/skills/codebase-context/SKILL.md

@@ -1,6 +1,6 @@
 ---
-description: Comprehensive Homarr codebase architecture and conventions reference
+name: codebase-context
-alwaysApply: true
+description: Comprehensive Homarr codebase architecture and conventions reference. Use when orienting in the monorepo, understanding package dependency layers, the three runtime services and ports, tRPC router structure, multi-database support, widget/integration/cron system architecture, routing, auth providers, env vars, or key patterns before writing code.
 ---
 
 # Homarr Codebase Context
@@ -27,7 +27,7 @@ Homarr is an open-source, self-hosted dashboard for managing homelab services. I
 
 ## Repository Structure
 
-```
+```text
 homarr/
 ├── apps/
 │   ├── nextjs/          # Main Next.js application (port 3000)
@@ -66,8 +66,6 @@ homarr/
 │   ├── analytics/       # Server-side analytics (Umami)
 │   ├── server-settings/ # Server setting keys/types
 │   ├── settings/        # User-facing settings UI context
-│   ├── old-import/      # Legacy Homarr import
-│   ├── old-schema/      # Legacy Homarr zod schemas
 │   └── cli/             # Node CLI for ops (brocli)
 ├── tooling/
 │   ├── typescript/      # Base tsconfig
@@ -79,11 +77,11 @@ homarr/
 
 ## Three Runtime Services
 
-| Service | Port | Role |
+| Service   | Port | Role                                         |
-|---------|------|------|
+| --------- | ---- | -------------------------------------------- |
-| Next.js | 3000 | Main web app (SSR + API routes) |
+| Next.js   | 3000 | Main web app (SSR + API routes)              |
-| WebSocket | 3001 | tRPC subscriptions via `ws` |
+| WebSocket | 3001 | tRPC subscriptions via `ws`                  |
-| Tasks | 3002 | Cron job runner + management API via Fastify |
+| Tasks     | 3002 | Cron job runner + management API via Fastify |
 
 In Docker, nginx listens on **7575** and proxies to all three. The tasks service authenticates via `CRON_JOB_API_KEY` header.
 
@@ -112,6 +110,7 @@ In Docker, nginx listens on **7575** and proxies to all three. The tasks service
 ### Multi-Database Support
 
 Drizzle schemas exist in three parallel implementations:
+
 - `packages/db/schema/sqlite.ts`
 - `packages/db/schema/mysql.ts`
 - `packages/db/schema/postgresql.ts`
@@ -121,6 +120,7 @@ Selected at runtime via `DB_DRIVER` env (`better-sqlite3` | `mysql2` | `node-pos
 ### Widget System
 
 Widgets are registered in `packages/widgets/src/index.tsx` as `widgetImports` (must satisfy `Record<WidgetKind, ...>`). Each widget:
+
 - Has a `definition` created via `createWidgetDefinition(kind, { icon, createOptions, supportedIntegrations? })`
 - Uses `optionsBuilder.from(factory => ({ ... }))` for typed options
 - Loads dynamically via `next/dynamic`
@@ -133,6 +133,7 @@ Integrations are defined in `packages/definitions/src/integration.ts` (`integrat
 ### Cron Job System
 
 Jobs defined in `packages/cron-jobs/src/jobs/`. Each job:
+
 - Uses `createCronJob` with a cron expression
 - Publishes results to Redis channels
 - Widget subscriptions consume those channels via tRPC subscriptions
@@ -160,6 +161,7 @@ Configured via `AUTH_PROVIDERS` env. Supports: `credentials` (local), `ldap`, `o
 ## Environment Variables
 
 Key env vars (from `.env.example`):
+
 - `DB_DRIVER`: `better-sqlite3` | `mysql2` | `node-postgres`
 - `DB_URL`: Database connection string
 - `AUTH_SECRET`: NextAuth secret
@@ -191,16 +193,3 @@ Key env vars (from `.env.example`):
 - Drag-and-drop via `@dnd-kit/*`
 - `typescript.ignoreBuildErrors: true` in next.config (types checked separately via `typecheck`)
 - `serverExternalPackages`: `dockerode`, `isomorphic-dompurify`, `jsdom`
-
-## Documentation (`apps/docs`)
-
-Docusaurus 3 site at `apps/docs/`, package name `@homarr/docs`.
-
-- Run with `pnpm dev:docs` from root
-- Build with `pnpm turbo build --filter=@homarr/docs`
-- Uses Tailwind CSS 3 for custom pages (not Mantine)
-- Imports `@homarr/definitions` for type-safe integration/widget metadata
-- When adding or modifying widgets, integrations, cron jobs, API routes, env vars, or user-facing features, you MUST also update corresponding docs in `apps/docs/docs/`
-- Integration docs: `apps/docs/docs/integrations/<slug>/index.mdx` + `index.ts`
-- Widget docs: `apps/docs/docs/widgets/<slug>/index.mdx` + `index.ts`
-- Strict link checking: broken links/anchors cause build failure

.agents/skills/datatable-migration/SKILL.md

@@ -1,3 +1,8 @@
+---
+name: datatable-migration
+description: Playbook for migrating tables from mantine-react-table (MRT) to mantine-datatable. Use when converting any table component from mantine-react-table to mantine-datatable, working on DataTable column/sort/expansion/context-menu code, or implementing responsive column visibility, column persistence, or transparent tables in widgets.
+---
+
 # Migrating Tables from mantine-react-table to mantine-datatable
 
 This document captures every pattern, fix, and decision from the downloads widget rework (PR #6430). Use it as a playbook when porting other tables.
@@ -7,10 +12,12 @@ This document captures every pattern, fix, and decision from the downloads widge
 Current `mantine-react-table` consumers that could be migrated:
 
 **Widgets (in `packages/widgets/`):**
+
 - `docker/component.tsx` — Docker container table
 - `media-server/component.tsx` — Media server sessions
 
 **Admin pages (in `apps/nextjs/src/app/[locale]/manage/`):**
+
 - `tools/docker/docker-table.tsx`
 - `tools/tasks/_components/tasks-table.tsx`
 - `tools/api/components/api-keys.tsx`
@@ -19,12 +26,12 @@ Current `mantine-react-table` consumers that could be migrated:
 - `tools/kubernetes/` — 8 Kubernetes resource tables
 
 **Modals:**
+
 - `packages/modals-collection/src/search-engines/request-media-modal.tsx`
 
 **Shared hook to remove once all migrated:**
-- `packages/ui/src/hooks/use-translated-mantine-react-table.ts`
 
----
+- `packages/ui/src/hooks/use-translated-mantine-react-table.ts`
 
 ## 1. Core Migration: mantine-react-table → mantine-datatable
 
@@ -67,6 +74,7 @@ const columns: DataTableColumn<MyRow>[] = [
 ```
 
 Key differences:
+
 - `accessorKey` → `accessor`
 - `header` → `title`
 - `size` → `width`
@@ -118,8 +126,6 @@ const sortedData = useMemo(() => {
 <DataTable records={sortedData} sortStatus={sortStatus} onSortStatusChange={setSortStatus} />
 ```
 
----
-
 ## 2. Making Tables Transparent (Widget Context)
 
 Widgets sit inside board cards that have user-controlled opacity. The table must be fully transparent so the card background shows through. mantine-datatable defaults to `var(--mantine-color-body)` which is opaque.
@@ -144,13 +150,21 @@ Create a CSS file alongside the component:
 
 /* Hover: translucent instead of opaque */
 .my-table .mantine-datatable-table tbody tr:hover {
-  background-color: color-mix(in srgb, var(--mantine-color-default-hover) 40%, transparent) !important;
+  background-color: color-mix(
+    in srgb,
+    var(--mantine-color-default-hover) 40%,
+    transparent
+  ) !important;
 }
 
 /* Headers: frosted glass effect */
 .my-table th {
   white-space: nowrap;
-  background-color: color-mix(in srgb, var(--mantine-color-body) 60%, transparent) !important;
+  background-color: color-mix(
+    in srgb,
+    var(--mantine-color-body) 60%,
+    transparent
+  ) !important;
   backdrop-filter: blur(8px);
 }
 
@@ -172,14 +186,16 @@ Create a CSS file alongside the component:
 
 /* Row expansion area */
 .my-table .mantine-datatable-row-expansion-cell {
-  background-color: color-mix(in srgb, var(--mantine-color-body) 40%, transparent) !important;
+  background-color: color-mix(
+    in srgb,
+    var(--mantine-color-body) 40%,
+    transparent
+  ) !important;
 }
 ```
 
 Import it: `import "./styles.css";` and apply via `className="my-table"`.
 
----
-
 ## 3. Responsive Column Visibility
 
 Use a lookup table of width breakpoints instead of media queries. The widget receives `width` as a prop.
@@ -195,11 +211,38 @@ interface SizeConfig {
 }
 
 const SIZE_BREAKPOINTS: { maxWidth: number; config: SizeConfig }[] = [
-  { maxWidth: 300, config: { fontSize: "xs", iconSize: 12, cellPadding: 2, showSpeedColumns: false, showTimeColumn: false, showStateColumn: false } },
+  {
-  { maxWidth: 500, config: { fontSize: "xs", iconSize: 14, cellPadding: 4, showSpeedColumns: false, showTimeColumn: true, showStateColumn: false } },
+    maxWidth: 300,
+    config: {
+      fontSize: "xs",
+      iconSize: 12,
+      cellPadding: 2,
+      showSpeedColumns: false,
+      showTimeColumn: false,
+      showStateColumn: false,
+    },
+  },
+  {
+    maxWidth: 500,
+    config: {
+      fontSize: "xs",
+      iconSize: 14,
+      cellPadding: 4,
+      showSpeedColumns: false,
+      showTimeColumn: true,
+      showStateColumn: false,
+    },
+  },
 ];
 
-const DEFAULT_SIZE_CONFIG: SizeConfig = { fontSize: "sm", iconSize: 14, cellPadding: 4, showSpeedColumns: true, showTimeColumn: true, showStateColumn: true };
+const DEFAULT_SIZE_CONFIG: SizeConfig = {
+  fontSize: "sm",
+  iconSize: 14,
+  cellPadding: 4,
+  showSpeedColumns: true,
+  showTimeColumn: true,
+  showStateColumn: true,
+};
 
 function getSizeConfig(width: number): SizeConfig {
   for (const { maxWidth, config } of SIZE_BREAKPOINTS) {
@@ -215,7 +258,9 @@ const size = useMemo(() => getSizeConfig(width), [width]);
 Then use a visibility check lookup table for columns:
 
 ```typescript
-const columnVisibilityChecks: Partial<Record<string, (ctx: ColumnContext) => boolean>> = {
+const columnVisibilityChecks: Partial<
+  Record<string, (ctx: ColumnContext) => boolean>
+> = {
   upSpeed: (ctx) => ctx.hasTorrents && ctx.size.showSpeedColumns,
   downSpeed: (ctx) => ctx.size.showSpeedColumns,
   time: (ctx) => ctx.size.showTimeColumn,
@@ -230,8 +275,6 @@ function shouldIncludeColumn(accessor: string, ctx: ColumnContext): boolean {
 }
 ```
 
----
-
 ## 4. Column Persistence (Drag/Resize → Server)
 
 `useDataTableColumns` stores column order and widths in localStorage by default. For widgets, this must persist server-side so it works across devices.
@@ -263,15 +306,6 @@ Even hidden options need translation keys or the translation test fails:
 "widget.mywidget.option.columnWidths.label": "Column widths"
 ```
 
-### Old-import mappings
-
-Add to `packages/old-import/src/widgets/options.ts`:
-
-```typescript
-columnOrder: () => undefined,
-columnWidths: () => undefined,
-```
-
 ### Dynamic storeKey
 
 Use a key that includes `itemId` and sorted column names. This prevents cross-widget localStorage bleeding:
@@ -285,8 +319,13 @@ const storeKey = `mytable-${itemId ?? "preview"}-${[...options.columns].toSorted
 On mount, seed `useDataTableColumns` with server-persisted values. Use a `hydrated` ref to prevent the persist effect from immediately writing defaults back:
 
 ```typescript
-const { effectiveColumns, columnsOrder, columnsWidth, setColumnsOrder, setMultipleColumnWidths } =
+const {
-  useDataTableColumns<MyRow>({ key: storeKey, columns });
+  effectiveColumns,
+  columnsOrder,
+  columnsWidth,
+  setColumnsOrder,
+  setMultipleColumnWidths,
+} = useDataTableColumns<MyRow>({ key: storeKey, columns });
 
 const lastStoreKey = useRef(storeKey);
 const hydrated = useRef(false);
@@ -300,11 +339,22 @@ useEffect(() => {
   if (savedOrder.length > 0) setColumnsOrder(savedOrder);
   if (Object.keys(savedWidths).length > 0) {
     setMultipleColumnWidths(
-      Object.entries(savedWidths).map(([accessor, w]) => ({ accessor, width: w })),
+      Object.entries(savedWidths).map(([accessor, w]) => ({
+        accessor,
+        width: w,
+      })),
     );
   }
-  requestAnimationFrame(() => { hydrated.current = true; });
+  requestAnimationFrame(() => {
-}, [storeKey, savedOrder, savedWidths, setColumnsOrder, setMultipleColumnWidths]);
+    hydrated.current = true;
+  });
+}, [
+  storeKey,
+  savedOrder,
+  savedWidths,
+  setColumnsOrder,
+  setMultipleColumnWidths,
+]);
 ```
 
 ### Persist localStorage → server
@@ -317,22 +367,26 @@ const prevWidths = useRef(columnsWidth);
 
 useEffect(() => {
   if (!hydrated.current) return;
-  const orderChanged = JSON.stringify(columnsOrder) !== JSON.stringify(prevOrder.current);
+  const orderChanged =
-  const widthsChanged = JSON.stringify(columnsWidth) !== JSON.stringify(prevWidths.current);
+    JSON.stringify(columnsOrder) !== JSON.stringify(prevOrder.current);
+  const widthsChanged =
+    JSON.stringify(columnsWidth) !== JSON.stringify(prevWidths.current);
   prevOrder.current = columnsOrder;
   prevWidths.current = columnsWidth;
 
   if (!orderChanged && !widthsChanged) return;
 
-  if (orderChanged) persistOption({ columnOrder: JSON.stringify(columnsOrder) });
+  if (orderChanged)
+    persistOption({ columnOrder: JSON.stringify(columnsOrder) });
   if (widthsChanged) {
     const widthMap: Record<string, number> = {};
     for (const entry of columnsWidth) {
       const key = Object.keys(entry)[0];
       if (!key) continue;
-      const w = entry[key as keyof typeof entry];
+      const v = entry[key as keyof typeof entry];
-      if (typeof w === "number") widthMap[key] = w;
+      if (typeof v === "number") widthMap[key] = v;
-      else if (typeof w === "string" && w.endsWith("px")) widthMap[key] = parseInt(w, 10);
+      else if (typeof v === "string" && v.endsWith("px"))
+        widthMap[key] = parseInt(v, 10);
     }
     persistOption({ columnWidths: JSON.stringify(widthMap) });
   }
@@ -341,8 +395,6 @@ useEffect(() => {
 
 The `persistOption` helper calls both `setOptions` (local state) and `saveItemOptions` (server mutation).
 
----
-
 ## 5. Context Menu (Right-Click)
 
 Do NOT install `mantine-contextmenu`. Use Mantine's `Menu` + `Portal` directly:
@@ -374,15 +426,41 @@ const handleContextMenu = useCallback(
 The menu component uses `Portal` for correct z-index:
 
 ```tsx
-function RowContextMenu({ state, onClose }: { state: ContextMenuState; onClose: () => void }) {
+function RowContextMenu({
+  state,
+  onClose,
+}: {
+  state: ContextMenuState;
+  onClose: () => void;
+}) {
   return (
     <Portal>
-      <Menu opened onClose={onClose} closeOnItemClick={false} position="right-start" offset={0}>
+      <Menu
+        opened
+        onClose={onClose}
+        closeOnItemClick={false}
+        position="right-start"
+        offset={0}
+      >
         <Menu.Target>
-          <Box style={{ position: "fixed", left: state.x, top: state.y, width: 0, height: 0 }} />
+          <Box
+            style={{
+              position: "fixed",
+              left: state.x,
+              top: state.y,
+              width: 0,
+              height: 0,
+            }}
+          />
         </Menu.Target>
         <Menu.Dropdown>
-          <Menu.Item onClick={() => { /* action */ onClose(); }}>Action</Menu.Item>
+          <Menu.Item
+            onClick={() => {
+              /* action */ onClose();
+            }}
+          >
+            Action
+          </Menu.Item>
         </Menu.Dropdown>
       </Menu>
     </Portal>
@@ -392,8 +470,6 @@ function RowContextMenu({ state, onClose }: { state: ContextMenuState; onClose:
 
 **Key fix:** Use `closeOnItemClick={false}` if any menu item needs a two-step confirmation (like delete → confirm). Close the menu on scroll: `onScroll={() => { if (contextMenu) closeContextMenu(); }}`.
 
----
-
 ## 6. Row Expansion
 
 ```typescript
@@ -413,8 +489,6 @@ function RowContextMenu({ state, onClose }: { state: ContextMenuState; onClose:
 
 **Critical:** Do NOT set `onRowClick` when using `rowExpansion` with `trigger: "click"`. They conflict and the expansion won't work.
 
----
-
 ## 7. Common Pitfalls & Fixes
 
 ### Status indicator dots
@@ -475,8 +549,11 @@ Always wrap in try/catch:
 ```typescript
 function parseJsonOption<T>(value: string | undefined, fallback: T): T {
   if (!value) return fallback;
-  try { return JSON.parse(value) as T; }
+  try {
-  catch { return fallback; }
+    return JSON.parse(value) as T;
+  } catch {
+    return fallback;
+  }
 }
 ```
 
@@ -494,20 +571,19 @@ If the widget has configurable default sort, sync it:
 
 ```typescript
 useEffect(() => {
-  setSortStatus({ columnAccessor: options.defaultSort, direction: defaultSortDirection });
+  setSortStatus({
+    columnAccessor: options.defaultSort,
+    direction: defaultSortDirection,
+  });
 }, [options.defaultSort, defaultSortDirection]);
 ```
 
----
-
 ## 8. Accessibility
 
 - All `ActionIcon` components need `aria-label`
 - Filter toggles (client badges, status badges) need `aria-pressed={isActive}`
 - `textSelectionDisabled` on DataTable prevents accidental text selection during drag/resize
 
----
-
 ## 9. Error Handling
 
 - Every mutation needs an `onError` callback with `showErrorNotification`
@@ -518,12 +594,14 @@ useEffect(() => {
 ```typescript
 const mutationOptions = {
   onSettled: () => void utils.myQuery.invalidate(),
-  onError: () => showErrorNotification({ title: t("errors.actionFailed"), message: t("errors.actionFailedMessage") }),
+  onError: () =>
+    showErrorNotification({
+      title: t("errors.actionFailed"),
+      message: t("errors.actionFailedMessage"),
+    }),
 };
 ```
 
----
-
 ## 10. i18n
 
 - No hardcoded strings. Every user-visible string goes through `useScopedI18n`
@@ -534,8 +612,6 @@ const mutationOptions = {
 - Errors: `t("errors.{errorKey}")`
 - Hidden options still need `.label` translation keys
 
----
-
 ## 11. Edit Mode
 
 Disable pointer events on the table during edit mode to prevent conflicts with the board's drag-and-drop:
@@ -550,8 +626,6 @@ if (isEditMode) rowContextMenuHandler = undefined;
 <DataTable style={{ pointerEvents: tablePointerEvents }} />
 ```
 
----
-
 ## 12. DataTable Props Reference (Commonly Used)
 
 ```typescript
@@ -590,8 +664,6 @@ if (isEditMode) rowContextMenuHandler = undefined;
 />
 ```
 
----
-
 ## 13. Layout Stability
 
 - Don't use `table-layout: fixed` — it fights mantine-datatable's resize logic
@@ -600,8 +672,6 @@ if (isEditMode) rowContextMenuHandler = undefined;
 - Names should truncate at the cell boundary, not a character count, so the layout is stable regardless of content length
 - `flexShrink: 0` on badges/icons prevents them from being squeezed by long names
 
----
-
 ## 14. Checklist for Each Migration
 
 1. Replace imports (`mantine-react-table` → `mantine-datatable`)
@@ -610,13 +680,12 @@ if (isEditMode) rowContextMenuHandler = undefined;
 4. Add CSS file for transparent backgrounds (if widget context)
 5. Add responsive column visibility (if widget context)
 6. Add hidden options + hydration logic (if column persistence needed)
-7. Add old-import mappings for new options
+7. Add translation keys (including hidden option labels)
-8. Add translation keys (including hidden option labels)
+8. Add context menu if row actions exist
-9. Add context menu if row actions exist
+9. Add row expansion if detail view exists
-10. Add row expansion if detail view exists
+10. Add error handling on all mutations
-11. Add error handling on all mutations
+11. Add accessibility attributes
-12. Add accessibility attributes
+12. Test at multiple widget widths
-13. Test at multiple widget widths
+13. Update docs in `apps/docs/docs/widgets/` if applicable
-14. Update docs in `apps/docs/docs/widgets/` if applicable
+14. Run `pnpm turbo typecheck`
-15. Run `pnpm turbo typecheck` — catches old-import mismatches
+15. Run translation spec — catches missing keys
-16. Run translation spec — catches missing keys

.agents/skills/documentation-sync/SKILL.md

@@ -0,0 +1,44 @@
+---
+name: documentation-sync
+description: Keep Homarr documentation in sync with code changes. Use when modifying code that affects user-facing behavior, or when adding/modifying widgets, integrations, cron jobs, API routes, env vars, permissions, auth providers, or UI in apps/docs. Covers the docs/ mapping table, integration doc pattern, and widget doc pattern.
+---
+
+# Documentation Sync
+
+When modifying code that affects user-facing behavior, you MUST also update the documentation in `apps/docs/`.
+
+## What triggers a doc update
+
+| Code change            | Doc location                                                |
+| ---------------------- | ----------------------------------------------------------- |
+| New integration        | `apps/docs/docs/integrations/<slug>/index.mdx` + `index.ts` |
+| New widget             | `apps/docs/docs/widgets/<slug>/index.mdx` + `index.ts`      |
+| Changed API surface    | `apps/docs/docs/management/api.mdx`                         |
+| New/changed env vars   | `apps/docs/docs/advanced/`                                  |
+| New CLI commands       | `apps/docs/docs/advanced/command-line/`                     |
+| Changed auth providers | `apps/docs/docs/advanced/` SSO pages                        |
+| UI/UX changes          | Relevant getting-started or management pages                |
+| New cron job           | `apps/docs/docs/management/tasks.mdx`                       |
+| Changed permissions    | `apps/docs/docs/management/users.mdx`                       |
+
+## Integration doc pattern
+
+Each integration has a folder under `apps/docs/docs/integrations/<slug>/`:
+
+- `index.ts` — exports a typed `IntegrationDefinition` with name, description, iconUrl, path
+- `index.mdx` — uses shared components: `IntegrationHeader`, `IntegrationCapabilites`, `IntegrationSecrets`
+- Import metadata from `@homarr/definitions` where possible
+
+## Widget doc pattern
+
+Each widget has a folder under `apps/docs/docs/widgets/<slug>/`:
+
+- `index.ts` — exports a typed `WidgetDefinition` with icon, name, description, path, configuration
+- `index.mdx` — uses shared components: `WidgetHeader`, `WidgetConfig`, `WidgetAdding`
+
+## Development
+
+- Run docs locally: `pnpm dev:docs` from root
+- Build docs: `pnpm turbo build --filter=@homarr/docs`
+- The docs app can import from `@homarr/definitions` for type-safe integration/widget metadata
+- Docusaurus strict mode throws on broken links — fix any broken references before committing

.agents/skills/mcp-integration/SKILL.md

@@ -1,13 +1,14 @@
 ---
-description: How to expose tRPC procedures as MCP tools for AI clients
+name: mcp-integration
-globs: packages/api/src/router/**/*.ts
+description: Expose tRPC procedures as MCP tools for AI clients. Use when modifying procedures in packages/api/src/router, adding a new tRPC procedure or router, or deciding what to expose via Homarr's MCP interface. Covers .meta({ mcp }), router registration in packages/api/src/mcp.ts, input schema rules, and what to expose vs skip.
-alwaysApply: false
 ---
 
-# MCP Integration Guide
+# MCP Integration
 
 Every new tRPC procedure that provides useful functionality should be exposed as an MCP tool so AI assistants (Claude, Cursor, etc.) can use it. This is a first-class feature of Homarr.
 
+Exposing a procedure makes it callable by any AI client with an API key. Before adding `.meta({ mcp })`, review what the tool exposes: authorization requirements, sensitive data, tenant isolation, auditability, and whether the action is destructive. Prefer exposing read-only queries over mutations unless the mutation is safe and permission-scoped. When in doubt, ask for a security review before shipping a new MCP tool.
+
 ## Adding MCP to a procedure
 
 Add `.meta({ mcp: { enabled: true, description: "..." } })` to the procedure chain:
@@ -16,7 +17,7 @@ Add `.meta({ mcp: { enabled: true, description: "..." } })` to the procedure cha
 // Read-only tool (query)
 myProcedure: protectedProcedure
   .meta({ mcp: { enabled: true, description: "Get all items with their status and metadata" } })
-  .input(z.object({ limit: z.number().default(50) }))
+  .input(z.object({ limit: z.number().default(10) }))
   .query(async ({ ctx, input }) => { ... })
 
 // Write tool (mutation)
@@ -38,23 +39,27 @@ The `.meta()` call must come **before** `.input()` and `.query()`/`.mutation()`
 The description is the **only thing** an AI sees to decide when and how to use the tool. Write it like you're explaining to a colleague who has never used Homarr.
 
 **Must include:**
+
 - What the tool returns or does
 - Which integrations/services it works with (if applicable)
 - How to get required IDs (e.g., "Use integration_all to get the integrationId")
 - Permission requirements (if non-obvious)
 
 **Good:**
-```
+
+```text
 "Get calendar events for upcoming and recent media releases. Fetches from all connected Sonarr (TV), Radarr (movies), Lidarr (music), and Readarr (books) integrations. Requires integrationIds from integration_all"
 ```
 
 **Bad:**
-```
+
+```text
 "Get calendar events"
 ```
 
 **For tools that return permission fields**, explain what they mean:
-```
+
+```text
 "List all integrations. Returns permissions.hasUseAccess (read) and permissions.hasInteractAccess (actions) — false means the API key lacks that permission, not an error"
 ```
 
@@ -77,11 +82,13 @@ export const mcpRouter = createTRPCRouter({
 ## What to expose vs. what to skip
 
 **Expose:**
+
 - Data queries (list, search, get by ID)
 - Actions users would ask an AI to do (toggle, create, delete, approve)
 - Status checks (health, stats, summaries)
 
 **Skip:**
+
 - Subscriptions (WebSocket-only, not supported by MCP)
 - Internal procedures (session management, onboarding steps)
 - File upload/download procedures

.claude/skills

@@ -0,0 +1 @@
+../.agents/skills

.cursor/rules/documentation-sync.mdc

@@ -1,50 +0,0 @@
----
-description: Keep documentation in sync with code changes
-globs:
-  - packages/definitions/src/**
-  - packages/widgets/src/**
-  - packages/integrations/src/**
-  - packages/api/src/**
-  - apps/nextjs/src/**
-  - apps/docs/**
----
-
-# Documentation Sync Rule
-
-When modifying code that affects user-facing behavior, you MUST also update the documentation in `apps/docs/`.
-
-## What triggers a doc update
-
-| Code change | Doc location |
-|---|---|
-| New integration | `apps/docs/docs/integrations/<slug>/index.mdx` + `index.ts` |
-| New widget | `apps/docs/docs/widgets/<slug>/index.mdx` + `index.ts` |
-| Changed API surface | `apps/docs/docs/management/api.mdx` |
-| New/changed env vars | `apps/docs/docs/advanced/` |
-| New CLI commands | `apps/docs/docs/advanced/command-line/` |
-| Changed auth providers | `apps/docs/docs/advanced/` SSO pages |
-| UI/UX changes | Relevant getting-started or management pages |
-| New cron job | `apps/docs/docs/management/tasks.mdx` |
-| Changed permissions | `apps/docs/docs/management/users.mdx` |
-
-## Integration doc pattern
-
-Each integration has a folder under `apps/docs/docs/integrations/<slug>/`:
-
-- `index.ts` — exports a typed `IntegrationDefinition` with name, description, iconUrl, path
-- `index.mdx` — uses shared components: `IntegrationHeader`, `IntegrationCapabilites`, `IntegrationSecrets`
-- Import metadata from `@homarr/definitions` where possible
-
-## Widget doc pattern
-
-Each widget has a folder under `apps/docs/docs/widgets/<slug>/`:
-
-- `index.ts` — exports a typed `WidgetDefinition` with icon, name, description, path, configuration
-- `index.mdx` — uses shared components: `WidgetHeader`, `WidgetConfig`, `WidgetAdding`
-
-## Development
-
-- Run docs locally: `pnpm dev:docs` from root
-- Build docs: `pnpm turbo build --filter=@homarr/docs`
-- The docs app can import from `@homarr/definitions` for type-safe integration/widget metadata
-- Docusaurus strict mode throws on broken links — fix any broken references before committing

.gitignore

@@ -71,7 +71,8 @@ apps/nextjs/public/images/background.png
 
 # personal agent config
 .opencode
-.agents/
+.agents/*
+!.agents/skills/
 skills-lock.json
 
 # docusaurus

.mcp.json

@@ -0,0 +1,8 @@
+{
+  "mcpServers": {
+    "mantine": {
+      "command": "npx",
+      "args": ["-y", "@mantine/mcp-server"]
+    }
+  }
+}

AGENTS.md

@@ -84,6 +84,16 @@ When modifying user-facing code, you MUST also update the corresponding document
 - Lint: oxlint (not ESLint)
 - Format: oxfmt (not Prettier)
 - UI: Mantine (not Tailwind) — Tailwind is only used in docs app
+- Mantine: use the `mantine` MCP server (configured in `.mcp.json`; tools `get_item_doc` / `get_item_props` / `search_docs`) for current v9 APIs before writing component code. Prefer built-in primitives (`Combobox`/`useCombobox` for selects, the polymorphic `component` prop, `@mantine/hooks`) over hand-rolled equivalents. Check `packages/ui/` for existing conventions first.
+
+## MCP servers
+
+`.mcp.json` at the repo root declares project-scoped MCP servers (the standard Claude Code layout; other tools can import the same `mcpServers` block). See the `mantine` entry there for the Mantine v9 server, and the upstream docs at https://mantine.dev/guides/llms/ for per-tool setup (OpenCode: `.opencode/opencode.json`, Codex: `.codex/config.toml`). Only keyless server definitions belong in `.mcp.json`; anything needing secrets stays in local dotfiles.
+
+## Agent Skills
+
+Portable agent skills live in `.agents/skills/` (the Agent Skills open standard). Cursor, Codex, and OpenCode read `.agents/skills/` natively. Claude Code does not scan it, so `.claude/skills/` is a symlink back to `.agents/skills/`. Install skills at `.agents/skills/<name>/SKILL.md` — that single copy is used everywhere. See `.agents/skills/` for available skills (documentation-sync, mcp-integration, codebase-context, datatable-migration).
+
 - Icons: @tabler/icons-react
 - Docs app can import from `@homarr/definitions` for shared types
 - Run `pnpm dev:cli -- dev` to browse local `homarr:*` images and remote PR images.