feat(api): expose board automation endpoints (#6213)

* feat(api): expose board automation endpoints

* style: auto-fix lint and format

* test(api): cover board settings updates

* Delete .opencode/changelog/2026-07-06.md

packages/api/src/router/serverSettings.ts

@@ -1,6 +1,14 @@
+import { TRPCError } from "@trpc/server";
 import { z } from "zod/v4";
 
-import { getServerSettingByKeyAsync, getServerSettingsAsync, updateServerSettingByKeyAsync } from "@homarr/db/queries";
+import { and, eq, inArray } from "@homarr/db";
+import {
+  getServerSettingByKeyAsync,
+  getServerSettingsAsync,
+  insertServerSettingByKeyAsync,
+  updateServerSettingByKeyAsync,
+} from "@homarr/db/queries";
+import { boards, serverSettings } from "@homarr/db/schema";
 import type { ServerSettings } from "@homarr/server-settings";
 import { defaultServerSettingsKeys } from "@homarr/server-settings";
 import { settingsInitSchema } from "@homarr/validation/settings";
@@ -8,6 +16,15 @@ import { settingsInitSchema } from "@homarr/validation/settings";
 import { createTRPCRouter, onboardingProcedure, permissionRequiredProcedure, publicProcedure } from "../trpc";
 import { nextOnboardingStepAsync } from "./onboard/onboard-queries";
 
+const boardServerSettingsSchema = z.object({
+  homeBoardId: z.string().nullable(),
+  mobileHomeBoardId: z.string().nullable(),
+  enableStatusByDefault: z.boolean(),
+  forceDisableStatus: z.boolean(),
+}) satisfies z.ZodType<ServerSettings["board"]>;
+
+const boardServerSettingsUpdateSchema = boardServerSettingsSchema.partial();
+
 export const serverSettingsRouter = createTRPCRouter({
   getCulture: publicProcedure.query(async ({ ctx }) => {
     return await getServerSettingByKeyAsync(ctx.db, "culture");
@@ -15,6 +32,67 @@ export const serverSettingsRouter = createTRPCRouter({
   getAll: permissionRequiredProcedure.requiresPermission("admin").query(async ({ ctx }) => {
     return await getServerSettingsAsync(ctx.db);
   }),
+  getBoardSettings: permissionRequiredProcedure
+    .requiresPermission("admin")
+    .meta({
+      openapi: { method: "GET", path: "/api/settings/board", tags: ["settings"], protect: true },
+      mcp: {
+        enabled: true,
+        description:
+          "Get global board defaults, including desktop/mobile home board IDs and status behavior. Requires admin permission",
+      },
+    })
+    .input(z.void())
+    .output(boardServerSettingsSchema)
+    .query(async ({ ctx }) => {
+      return await getServerSettingByKeyAsync(ctx.db, "board");
+    }),
+  updateBoardSettings: permissionRequiredProcedure
+    .requiresPermission("admin")
+    .meta({
+      openapi: { method: "PATCH", path: "/api/settings/board", tags: ["settings"], protect: true },
+      mcp: {
+        enabled: true,
+        description:
+          "Update global board defaults. Requires admin permission. Optional fields: homeBoardId, mobileHomeBoardId, enableStatusByDefault, forceDisableStatus. Home board IDs must reference public boards or be null",
+      },
+    })
+    .input(boardServerSettingsUpdateSchema)
+    .output(boardServerSettingsSchema)
+    .mutation(async ({ ctx, input }) => {
+      const inputBoardIds = [input.homeBoardId, input.mobileHomeBoardId].filter(
+        (id) => id !== undefined && id !== null,
+      );
+
+      if (inputBoardIds.length > 0) {
+        const publicBoards = await ctx.db.query.boards.findMany({
+          columns: { id: true },
+          where: and(inArray(boards.id, inputBoardIds), eq(boards.isPublic, true)),
+        });
+        const publicBoardIds = new Set(publicBoards.map((board) => board.id));
+        const invalidBoardIds = inputBoardIds.filter((id) => !publicBoardIds.has(id));
+        if (invalidBoardIds.length > 0) {
+          throw new TRPCError({
+            code: "BAD_REQUEST",
+            message: `Board settings home board IDs must reference public boards: ${invalidBoardIds.join(", ")}`,
+          });
+        }
+      }
+
+      const current = await getServerSettingByKeyAsync(ctx.db, "board");
+      const next = { ...current, ...input };
+      const existing = await ctx.db.query.serverSettings.findFirst({
+        where: eq(serverSettings.settingKey, "board"),
+      });
+
+      if (existing) {
+        await updateServerSettingByKeyAsync(ctx.db, "board", next);
+      } else {
+        await insertServerSettingByKeyAsync(ctx.db, "board", next);
+      }
+
+      return next;
+    }),
   saveSettings: permissionRequiredProcedure
     .requiresPermission("admin")
     .input(