feat: add meeting creation and dashboard with join links

Adds the management/CRUD layer for meetings: a signed JWT join-link
token service (jose), instant/scheduled meeting creation endpoints,
and a protected /dashboard page listing the host's active, upcoming,
and past meetings with a "Nueva reunión" action area (instant button +
scheduling dialog). Also fixes a Base UI console warning (missing
nativeButton={false}) on Button instances rendered as Link.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/api/meetings/instant/route.ts

@@ -0,0 +1,42 @@
+import crypto from "node:crypto"
+
+import { NextResponse } from "next/server"
+
+import { auth } from "@/auth"
+import { prisma } from "@/lib/prisma"
+import { createJoinLinkToken } from "@/lib/join-link"
+
+export async function POST() {
+  const session = await auth()
+
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "No autenticado" }, { status: 401 })
+  }
+
+  const hostUserId = Number(session.user.id)
+  const now = new Date()
+
+  // The creator is about to join immediately, so the meeting starts
+  // `active` right away rather than sitting in `scheduled` until someone
+  // joins.
+  const meeting = await prisma.meeting.create({
+    data: {
+      uuid: crypto.randomUUID(),
+      title: "Reunión instantánea",
+      type: "instant",
+      status: "active",
+      hostUserId,
+      startedAt: now,
+    },
+  })
+
+  const token = await createJoinLinkToken(meeting.uuid)
+
+  return NextResponse.json(
+    {
+      meeting: { id: meeting.id, uuid: meeting.uuid },
+      joinUrl: `/join/${meeting.uuid}?token=${token}`,
+    },
+    { status: 201 }
+  )
+}

src/app/api/meetings/scheduled/route.ts

@@ -0,0 +1,63 @@
+import crypto from "node:crypto"
+
+import { NextResponse } from "next/server"
+
+import { auth } from "@/auth"
+import { prisma } from "@/lib/prisma"
+import { createJoinLinkToken } from "@/lib/join-link"
+import { scheduledMeetingSchema } from "@/lib/validations/meeting"
+
+export async function POST(request: Request) {
+  const session = await auth()
+
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "No autenticado" }, { status: 401 })
+  }
+
+  let body: unknown
+
+  try {
+    body = await request.json()
+  } catch {
+    return NextResponse.json(
+      { error: "Cuerpo de solicitud inválido" },
+      { status: 400 }
+    )
+  }
+
+  const parsed = scheduledMeetingSchema.safeParse(body)
+
+  if (!parsed.success) {
+    return NextResponse.json(
+      {
+        error: "Datos inválidos",
+        issues: parsed.error.flatten().fieldErrors,
+      },
+      { status: 400 }
+    )
+  }
+
+  const hostUserId = Number(session.user.id)
+  const scheduledAt = new Date(parsed.data.scheduledAt)
+
+  const meeting = await prisma.meeting.create({
+    data: {
+      uuid: crypto.randomUUID(),
+      title: parsed.data.title,
+      type: "scheduled",
+      status: "scheduled",
+      hostUserId,
+      scheduledAt,
+    },
+  })
+
+  const token = await createJoinLinkToken(meeting.uuid, { scheduledAt })
+
+  return NextResponse.json(
+    {
+      meeting: { id: meeting.id, uuid: meeting.uuid },
+      joinUrl: `/join/${meeting.uuid}?token=${token}`,
+    },
+    { status: 201 }
+  )
+}