add: kanban board

apps/web/package.json

@@ -21,6 +21,7 @@
 		"@better-auth/infra": "0.1.9-beta.1",
 		"@better-auth/stripe": "1.5.1",
 		"@better-auth/utils": "^0.3.1",
+		"@hello-pangea/dnd": "^18.0.1",
 		"@mixedbread-ai/sdk": "^2.2.11",
 		"@octokit/rest": "^22.0.1",
 		"@openrouter/ai-sdk-provider": "^2.2.3",

apps/web/prisma/schema.prisma

@@ -380,6 +380,48 @@ model PromptRequestReaction {
   @@map("prompt_request_reactions")
 }
 
+model KanbanItem {
+  id                   String  @id
+  owner                String
+  repo                 String
+  issueNumber          Int
+  issueTitle           String
+  issueUrl             String
+  issueBody            String?
+  status               String  @default("backlog")
+  aiSummary            String?
+  assigneeLogin        String?
+  assigneeAvatar       String?
+  kanbanAssigneeLogin  String?
+  kanbanAssigneeAvatar String?
+  authorLogin          String?
+  authorAvatar         String?
+  labels               String? // JSON array of {name, color} objects
+  issueCommentCount    Int     @default(0)
+  issueState           String  @default("open") // open or closed
+  linkedPRs            String? // JSON array of linked PR objects
+  createdAt            String
+  updatedAt            String
+
+  @@unique([owner, repo, issueNumber])
+  @@index([owner, repo, status])
+  @@map("kanban_items")
+}
+
+model KanbanComment {
+  id            String @id
+  kanbanItemId  String
+  userId        String
+  userLogin     String?
+  userName      String
+  userAvatarUrl String
+  body          String
+  createdAt     String
+  updatedAt     String
+
+  @@index([kanbanItemId, createdAt])
+  @@map("kanban_comments")
+}
 model PrOverviewAnalysis {
   id           String @id
   owner        String

apps/web/src/app/(app)/repos/[owner]/[repo]/kanban/[id]/page.tsx

@@ -0,0 +1,90 @@
+import type { Metadata } from "next";
+import { notFound } from "next/navigation";
+import { getOctokit, extractRepoPermissions } from "@/lib/github";
+import { getKanbanItem, listKanbanComments } from "@/lib/kanban-store";
+import { KanbanItemDetail } from "@/components/kanban/kanban-item-detail";
+import { getServerSession } from "@/lib/auth";
+import { ShieldAlert } from "lucide-react";
+
+export async function generateMetadata({
+	params,
+}: {
+	params: Promise<{ owner: string; repo: string; id: string }>;
+}): Promise<Metadata> {
+	const { owner, repo, id } = await params;
+	const item = await getKanbanItem(id);
+	if (!item) {
+		return { title: `Kanban · ${owner}/${repo}` };
+	}
+	return { title: `${item.issueTitle} · Kanban · ${owner}/${repo}` };
+}
+
+async function checkMaintainerAccess(owner: string, repo: string): Promise<boolean> {
+	const octokit = await getOctokit();
+	if (!octokit) return false;
+
+	try {
+		const { data } = await octokit.repos.get({ owner, repo });
+		const perms = extractRepoPermissions(data);
+		return perms.push || perms.admin || perms.maintain;
+	} catch {
+		return false;
+	}
+}
+
+export default async function KanbanItemPage({
+	params,
+}: {
+	params: Promise<{ owner: string; repo: string; id: string }>;
+}) {
+	const { owner, repo, id } = await params;
+
+	const isMaintainer = await checkMaintainerAccess(owner, repo);
+	if (!isMaintainer) {
+		return (
+			<div className="py-16 flex flex-col items-center justify-center gap-4 text-center max-w-md mx-auto">
+				<div className="w-12 h-12 rounded-full bg-muted flex items-center justify-center">
+					<ShieldAlert className="w-6 h-6 text-amber-500" />
+				</div>
+				<div className="space-y-2">
+					<h1 className="text-sm font-medium">
+						Maintainer Access Required
+					</h1>
+					<p className="text-xs text-muted-foreground/80 leading-relaxed">
+						The Kanban board is only available to repository
+						maintainers.
+					</p>
+				</div>
+			</div>
+		);
+	}
+
+	const item = await getKanbanItem(id);
+	if (!item) {
+		notFound();
+	}
+
+	const comments = await listKanbanComments(id);
+	const session = await getServerSession();
+
+	const currentUser = session?.user
+		? {
+				id: session.user.id,
+				login: session.githubUser?.login ?? null,
+				name: session.user.name,
+				image: session.user.image ?? "",
+			}
+		: null;
+
+	return (
+		<div className="flex-1 min-h-0 flex flex-col p-4">
+			<KanbanItemDetail
+				owner={owner}
+				repo={repo}
+				item={item}
+				comments={comments}
+				currentUser={currentUser}
+			/>
+		</div>
+	);
+}