feat(team): manual-code invite flow + member management

Multi-tenant invite system without SMTP dependency. Designed for dev/early
stage; promotes to email-driven later by adding SMTP to Appwrite.

New schema:
- invite_links table (code, email, role, status, expiresAt, invitedBy)
  with unique index on code, indexes on (tenantId,status) and (tenantId,email)

New code:
- lib/appwrite/audit.ts: logAudit() helper writes to audit_logs with
  X-Forwarded-For/User-Agent capture; never throws.
- lib/appwrite/tenant-guard.ts: requireTenant() returns
  { user, tenantId, role, settings }; pulls highest role from team
  memberships. requireRole() guard.
- lib/appwrite/team-actions.ts:
  * inviteMemberAction — creates short code (8 char nanoid-style),
    inserts invite_links row with team-scoped perms, returns shortUrl.
    Reuses existing pending invite for same email instead of duplicating.
    Blocks self-invite, blocks invite of existing members.
  * cancelInviteAction — owner/admin only, marks status=cancelled.
  * removeMemberAction — owner/admin only; protects self-removal and
    requires owner-on-owner.
  * updateMemberRoleAction — owner only.
  * resolveInviteCode — public-ish lookup by code (admin SDK).
  * acceptInviteAction — verifies session.email matches invite.email,
    creates membership via admin SDK, marks invite accepted.
  All mutations write to audit_logs.

UI:
- /d/[code] short-URL accept page (server). Logged-in matching user
  sees 'Daveti kabul et' button; non-matching user sees error; logged-out
  user gets sign-up / sign-in CTAs that preserve the code.
- /settings/members page (server): InviteForm, PendingInvitesTable,
  MembersTable. Owner/admin gates respected; only owner can change roles.
- Sign-up and sign-in forms accept ?invite=CODE (and ?email= for sign-up):
  hidden input -> server action redirects to /d/CODE on success.

Other:
- next.config.ts: removed eslint config block (deprecated in Next 16);
  kept typescript.ignoreBuildErrors for template legacy.

next.config.ts

@@ -8,7 +8,6 @@ const nextConfig: NextConfig = {
 
   // TODO: re-enable once template files (chart.tsx, data-table-toolbar.tsx) are cleaned up.
   typescript: { ignoreBuildErrors: true },
-  eslint: { ignoreDuringBuilds: true },
 
   // Image optimization
   images: {

src/app/(auth)/sign-in/components/login-form-1.tsx

@@ -13,7 +13,11 @@ import { cn } from "@/lib/utils";
 import { signInAction } from "@/lib/appwrite/auth-actions";
 import { initialAuthState } from "@/lib/appwrite/auth-types";
 
-export function LoginForm1({ className, ...props }: React.ComponentProps<"div">) {
+export function LoginForm1({
+  className,
+  inviteCode,
+  ...props
+}: React.ComponentProps<"div"> & { inviteCode?: string }) {
   const [state, formAction, isPending] = useActionState(signInAction, initialAuthState);
 
   return (
@@ -21,6 +25,7 @@ export function LoginForm1({ className, ...props }: React.ComponentProps<"div">)
       <Card className="overflow-hidden p-0">
         <CardContent className="grid p-0 md:grid-cols-2">
           <form action={formAction} className="p-6 md:p-10">
+            {inviteCode && <input type="hidden" name="inviteCode" value={inviteCode} />}
             <div className="flex flex-col gap-6">
               <div className="flex justify-center">
                 <Link href="/" className="flex items-center gap-2 font-medium">
@@ -31,6 +36,12 @@ export function LoginForm1({ className, ...props }: React.ComponentProps<"div">)
                 </Link>
               </div>
 
+              {inviteCode && (
+                <p className="text-muted-foreground rounded-md border bg-muted/50 px-3 py-2 text-center text-xs">
+                  Davete katılmak için giriş yapın.
+                </p>
+              )}
+
               <div className="flex flex-col items-center text-center">
                 <h1 className="text-2xl font-bold tracking-tight">Tekrar hoş geldiniz</h1>
                 <p className="text-muted-foreground text-sm text-balance mt-1">

src/app/(auth)/sign-in/page.tsx

@@ -3,14 +3,19 @@ import { redirect } from "next/navigation";
 import { LoginForm1 } from "./components/login-form-1";
 import { getCurrentUser } from "@/lib/appwrite/server";
 
-export default async function Page() {
+export default async function Page({
+  searchParams,
+}: {
+  searchParams: Promise<{ invite?: string }>;
+}) {
+  const { invite } = await searchParams;
   const user = await getCurrentUser();
-  if (user) redirect("/dashboard");
+  if (user) redirect(invite ? `/d/${invite}` : "/dashboard");
 
   return (
     <div className="bg-muted flex min-h-svh flex-col items-center justify-center p-6 md:p-10">
       <div className="w-full max-w-sm md:max-w-4xl">
-        <LoginForm1 />
+        <LoginForm1 inviteCode={invite} />
       </div>
     </div>
   );

src/app/(auth)/sign-up/components/signup-form-1.tsx

@@ -13,7 +13,12 @@ import { cn } from "@/lib/utils";
 import { signUpAction } from "@/lib/appwrite/auth-actions";
 import { initialAuthState } from "@/lib/appwrite/auth-types";
 
-export function SignupForm1({ className, ...props }: React.ComponentProps<"div">) {
+export function SignupForm1({
+  className,
+  inviteCode,
+  prefilledEmail,
+  ...props
+}: React.ComponentProps<"div"> & { inviteCode?: string; prefilledEmail?: string }) {
   const [state, formAction, isPending] = useActionState(signUpAction, initialAuthState);
 
   return (
@@ -23,6 +28,7 @@ export function SignupForm1({ className, ...props }: React.ComponentProps<"div">
           <BrandPanel />
 
           <form action={formAction} className="p-6 md:p-10">
+            {inviteCode && <input type="hidden" name="inviteCode" value={inviteCode} />}
             <div className="flex flex-col gap-6">
               <div className="flex justify-center">
                 <Link href="/" className="flex items-center gap-2 font-medium">
@@ -34,9 +40,13 @@ export function SignupForm1({ className, ...props }: React.ComponentProps<"div">
               </div>
 
               <div className="flex flex-col items-center text-center">
-                <h1 className="text-2xl font-bold tracking-tight">Hesap oluşturun</h1>
+                <h1 className="text-2xl font-bold tracking-tight">
+                  {inviteCode ? "Davete katıl" : "Hesap oluşturun"}
+                </h1>
                 <p className="text-muted-foreground text-sm text-balance mt-1">
-                  Birkaç saniye içinde hesabınız hazır
+                  {inviteCode
+                    ? "Hesap oluşturduktan sonra çalışma alanına otomatik katılacaksınız"
+                    : "Birkaç saniye içinde hesabınız hazır"}
                 </p>
               </div>
 
@@ -60,6 +70,8 @@ export function SignupForm1({ className, ...props }: React.ComponentProps<"div">
                   type="email"
                   placeholder="ornek@firma.com"
                   autoComplete="email"
+                  defaultValue={prefilledEmail}
+                  readOnly={Boolean(prefilledEmail)}
                   required
                 />
               </div>

src/app/(auth)/sign-up/page.tsx

@@ -3,14 +3,19 @@ import { redirect } from "next/navigation";
 import { SignupForm1 } from "./components/signup-form-1";
 import { getCurrentUser } from "@/lib/appwrite/server";
 
-export default async function SignUpPage() {
+export default async function SignUpPage({
+  searchParams,
+}: {
+  searchParams: Promise<{ invite?: string; email?: string }>;
+}) {
+  const { invite, email } = await searchParams;
   const user = await getCurrentUser();
-  if (user) redirect("/dashboard");
+  if (user) redirect(invite ? `/d/${invite}` : "/dashboard");
 
   return (
     <div className="bg-muted flex min-h-svh flex-col items-center justify-center p-6 md:p-10">
       <div className="w-full max-w-sm md:max-w-4xl">
-        <SignupForm1 />
+        <SignupForm1 inviteCode={invite} prefilledEmail={email} />
       </div>
     </div>
   );

src/app/(dashboard)/settings/members/components/invite-form.tsx

@@ -0,0 +1,114 @@
+"use client";
+
+import { useActionState, useEffect, useRef, useState } from "react";
+import { Check, Copy, Loader2, UserPlus } from "lucide-react";
+
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+import { inviteMemberAction } from "@/lib/appwrite/team-actions";
+import { initialInviteState } from "@/lib/appwrite/team-types";
+
+export function InviteForm() {
+  const [state, formAction, isPending] = useActionState(inviteMemberAction, initialInviteState);
+  const [copied, setCopied] = useState(false);
+  const formRef = useRef<HTMLFormElement>(null);
+
+  useEffect(() => {
+    if (state.ok && formRef.current) {
+      formRef.current.reset();
+    }
+  }, [state.ok, state.shortUrl]);
+
+  const copy = async () => {
+    if (!state.shortUrl) return;
+    try {
+      await navigator.clipboard.writeText(state.shortUrl);
+      setCopied(true);
+      setTimeout(() => setCopied(false), 2000);
+    } catch {
+      /* ignore */
+    }
+  };
+
+  return (
+    <Card>
+      <CardHeader>
+        <CardTitle>Üye davet et</CardTitle>
+        <CardDescription>
+          Email ve rol girin, oluşturulan kısa linki kopyalayıp davet edeceğiniz kişiye gönderin.
+        </CardDescription>
+      </CardHeader>
+      <CardContent>
+        <form ref={formRef} action={formAction} className="grid gap-4 md:grid-cols-[1fr_180px_auto]">
+          <div className="grid gap-2">
+            <Label htmlFor="email">Email</Label>
+            <Input
+              id="email"
+              name="email"
+              type="email"
+              placeholder="ornek@firma.com"
+              required
+            />
+          </div>
+          <div className="grid gap-2">
+            <Label htmlFor="role">Rol</Label>
+            <Select name="role" defaultValue="member">
+              <SelectTrigger id="role">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="member">Üye</SelectItem>
+                <SelectItem value="admin">Yönetici</SelectItem>
+              </SelectContent>
+            </Select>
+          </div>
+          <div className="flex items-end">
+            <Button type="submit" disabled={isPending} className="w-full md:w-auto">
+              {isPending ? (
+                <>
+                  <Loader2 className="size-4 animate-spin" />
+                  Gönderiliyor...
+                </>
+              ) : (
+                <>
+                  <UserPlus className="size-4" />
+                  Davet et
+                </>
+              )}
+            </Button>
+          </div>
+        </form>
+
+        {state.error && (
+          <p className="text-destructive mt-3 text-sm" role="alert">
+            {state.error}
+          </p>
+        )}
+
+        {state.ok && state.shortUrl && (
+          <div className="bg-muted/50 mt-4 flex flex-col gap-2 rounded-md border p-3">
+            {state.message && (
+              <p className="text-muted-foreground text-xs">{state.message}</p>
+            )}
+            <div className="flex items-center gap-2">
+              <Input value={state.shortUrl} readOnly className="font-mono text-xs" />
+              <Button type="button" variant="outline" size="sm" onClick={copy}>
+                {copied ? <Check className="size-4" /> : <Copy className="size-4" />}
+                {copied ? "Kopyalandı" : "Kopyala"}
+              </Button>
+            </div>
+          </div>
+        )}
+      </CardContent>
+    </Card>
+  );
+}

src/app/(dashboard)/settings/members/components/members-table.tsx

@@ -0,0 +1,158 @@
+"use client";
+
+import { useState, useTransition } from "react";
+import { Loader2, Trash2 } from "lucide-react";
+
+import { Badge } from "@/components/ui/badge";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from "@/components/ui/table";
+import { removeMemberAction, updateMemberRoleAction } from "@/lib/appwrite/team-actions";
+
+type Member = {
+  id: string;
+  userId: string;
+  name: string;
+  email: string;
+  role: string;
+  joined: string;
+  invited: string;
+  confirm: boolean;
+};
+
+const ROLE_LABEL: Record<string, string> = {
+  owner: "Sahip",
+  admin: "Yönetici",
+  member: "Üye",
+};
+
+export function MembersTable({
+  members,
+  currentUserId,
+  isOwner,
+  canManage,
+}: {
+  members: Member[];
+  currentUserId: string;
+  isOwner: boolean;
+  canManage: boolean;
+}) {
+  const [busy, setBusy] = useState<string | null>(null);
+  const [, startTransition] = useTransition();
+
+  const setRole = (membershipId: string, role: string) => {
+    setBusy(membershipId);
+    startTransition(async () => {
+      const fd = new FormData();
+      fd.set("membershipId", membershipId);
+      fd.set("role", role);
+      await updateMemberRoleAction({ ok: false }, fd);
+      setBusy(null);
+    });
+  };
+
+  const remove = (membershipId: string, name: string) => {
+    if (!confirm(`${name} adlı üyeyi çalışma alanından çıkarmak istediğinize emin misiniz?`)) {
+      return;
+    }
+    setBusy(membershipId);
+    startTransition(async () => {
+      const fd = new FormData();
+      fd.set("membershipId", membershipId);
+      await removeMemberAction({ ok: false }, fd);
+      setBusy(null);
+    });
+  };
+
+  return (
+    <Card>
+      <CardHeader>
+        <CardTitle>Üyeler ({members.length})</CardTitle>
+      </CardHeader>
+      <CardContent>
+        <Table>
+          <TableHeader>
+            <TableRow>
+              <TableHead>İsim</TableHead>
+              <TableHead>Email</TableHead>
+              <TableHead>Rol</TableHead>
+              <TableHead className="text-right">İşlem</TableHead>
+            </TableRow>
+          </TableHeader>
+          <TableBody>
+            {members.map((m) => {
+              const isSelf = m.userId === currentUserId;
+              const isMemberOwner = m.role === "owner";
+              return (
+                <TableRow key={m.id}>
+                  <TableCell className="font-medium">
+                    {m.name}
+                    {isSelf && (
+                      <Badge variant="secondary" className="ml-2 text-xs">
+                        Siz
+                      </Badge>
+                    )}
+                  </TableCell>
+                  <TableCell className="text-muted-foreground">{m.email}</TableCell>
+                  <TableCell>
+                    {isOwner && !isMemberOwner && !isSelf ? (
+                      <Select
+                        value={m.role}
+                        disabled={busy === m.id}
+                        onValueChange={(v) => setRole(m.id, v)}
+                      >
+                        <SelectTrigger className="w-[120px]">
+                          <SelectValue />
+                        </SelectTrigger>
+                        <SelectContent>
+                          <SelectItem value="member">Üye</SelectItem>
+                          <SelectItem value="admin">Yönetici</SelectItem>
+                        </SelectContent>
+                      </Select>
+                    ) : (
+                      <Badge variant={isMemberOwner ? "default" : "outline"}>
+                        {ROLE_LABEL[m.role] ?? m.role}
+                      </Badge>
+                    )}
+                  </TableCell>
+                  <TableCell className="text-right">
+                    {canManage && !isSelf && !isMemberOwner ? (
+                      <Button
+                        type="button"
+                        variant="ghost"
+                        size="sm"
+                        disabled={busy === m.id}
+                        onClick={() => remove(m.id, m.name)}
+                      >
+                        {busy === m.id ? (
+                          <Loader2 className="size-3.5 animate-spin" />
+                        ) : (
+                          <Trash2 className="size-3.5" />
+                        )}
+                        Çıkar
+                      </Button>
+                    ) : null}
+                  </TableCell>
+                </TableRow>
+              );
+            })}
+          </TableBody>
+        </Table>
+      </CardContent>
+    </Card>
+  );
+}

src/app/(dashboard)/settings/members/components/pending-invites-table.tsx

@@ -0,0 +1,138 @@
+"use client";
+
+import { useTransition, useState } from "react";
+import { Check, Copy, Loader2, X } from "lucide-react";
+
+import { Badge } from "@/components/ui/badge";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from "@/components/ui/table";
+import { cancelInviteAction } from "@/lib/appwrite/team-actions";
+
+type Invite = {
+  id: string;
+  code: string;
+  email: string;
+  role: string;
+  expiresAt?: string;
+  createdAt: string;
+};
+
+export function PendingInvitesTable({
+  invites,
+  canManage,
+}: {
+  invites: Invite[];
+  canManage: boolean;
+}) {
+  const [busy, setBusy] = useState<string | null>(null);
+  const [, startTransition] = useTransition();
+  const [copiedId, setCopiedId] = useState<string | null>(null);
+
+  const baseUrl =
+    typeof window !== "undefined" ? window.location.origin : "";
+
+  const copy = async (code: string, id: string) => {
+    try {
+      await navigator.clipboard.writeText(`${baseUrl}/d/${code}`);
+      setCopiedId(id);
+      setTimeout(() => setCopiedId(null), 2000);
+    } catch {
+      /* ignore */
+    }
+  };
+
+  const cancel = (id: string) => {
+    setBusy(id);
+    startTransition(async () => {
+      const fd = new FormData();
+      fd.set("inviteId", id);
+      await cancelInviteAction({ ok: false }, fd);
+      setBusy(null);
+    });
+  };
+
+  const formatDate = (iso?: string) => {
+    if (!iso) return "—";
+    return new Date(iso).toLocaleDateString("tr-TR", {
+      day: "2-digit",
+      month: "short",
+      year: "numeric",
+    });
+  };
+
+  return (
+    <Card>
+      <CardHeader>
+        <CardTitle>Bekleyen davetler ({invites.length})</CardTitle>
+      </CardHeader>
+      <CardContent>
+        <Table>
+          <TableHeader>
+            <TableRow>
+              <TableHead>Email</TableHead>
+              <TableHead>Rol</TableHead>
+              <TableHead>Geçerlilik</TableHead>
+              <TableHead className="text-right">İşlem</TableHead>
+            </TableRow>
+          </TableHeader>
+          <TableBody>
+            {invites.map((inv) => (
+              <TableRow key={inv.id}>
+                <TableCell className="font-medium">{inv.email}</TableCell>
+                <TableCell>
+                  <Badge variant="outline">
+                    {inv.role === "admin" ? "Yönetici" : "Üye"}
+                  </Badge>
+                </TableCell>
+                <TableCell className="text-muted-foreground">
+                  {formatDate(inv.expiresAt)}
+                </TableCell>
+                <TableCell className="text-right">
+                  <div className="flex justify-end gap-2">
+                    <Button
+                      type="button"
+                      variant="outline"
+                      size="sm"
+                      onClick={() => copy(inv.code, inv.id)}
+                    >
+                      {copiedId === inv.id ? (
+                        <Check className="size-3.5" />
+                      ) : (
+                        <Copy className="size-3.5" />
+                      )}
+                      Linki kopyala
+                    </Button>
+                    {canManage && (
+                      <Button
+                        type="button"
+                        variant="ghost"
+                        size="sm"
+                        disabled={busy === inv.id}
+                        onClick={() => cancel(inv.id)}
+                      >
+                        {busy === inv.id ? (
+                          <Loader2 className="size-3.5 animate-spin" />
+                        ) : (
+                          <X className="size-3.5" />
+                        )}
+                        İptal
+                      </Button>
+                    )}
+                  </div>
+                </TableCell>
+              </TableRow>
+            ))}
+          </TableBody>
+        </Table>
+      </CardContent>
+    </Card>
+  );
+}

src/app/(dashboard)/settings/members/page.tsx

@@ -0,0 +1,95 @@
+import type { Metadata } from "next";
+import { redirect } from "next/navigation";
+import { Query } from "node-appwrite";
+
+import { createAdminClient } from "@/lib/appwrite/server";
+import { DATABASE_ID, TABLES, type InviteLink } from "@/lib/appwrite/schema";
+import { requireTenant } from "@/lib/appwrite/tenant-guard";
+import { InviteForm } from "./components/invite-form";
+import { MembersTable } from "./components/members-table";
+import { PendingInvitesTable } from "./components/pending-invites-table";
+
+export const metadata: Metadata = {
+  title: "İşletmem — Ekip üyeleri",
+};
+
+export default async function MembersPage() {
+  let ctx;
+  try {
+    ctx = await requireTenant();
+  } catch {
+    redirect("/onboarding");
+  }
+
+  const canManage = ctx.role === "owner" || ctx.role === "admin";
+  const isOwner = ctx.role === "owner";
+
+  const { teams, tablesDB } = createAdminClient();
+
+  const [memberships, invites] = await Promise.all([
+    teams.listMemberships(ctx.tenantId).catch(() => ({ memberships: [], total: 0 })),
+    tablesDB
+      .listRows({
+        databaseId: DATABASE_ID,
+        tableId: TABLES.inviteLinks,
+        queries: [
+          Query.equal("tenantId", ctx.tenantId),
+          Query.equal("status", "pending"),
+          Query.orderDesc("$createdAt"),
+          Query.limit(50),
+        ],
+      })
+      .catch(() => ({ rows: [] as unknown[] })),
+  ]);
+
+  const members = memberships.memberships.map((m) => ({
+    id: m.$id,
+    userId: m.userId,
+    name: m.userName || m.userEmail,
+    email: m.userEmail,
+    role: m.roles[0] ?? "member",
+    joined: m.joined,
+    invited: m.invited,
+    confirm: m.confirm,
+  }));
+
+  const pendingInvites = (invites.rows as unknown as InviteLink[]).map((row) => ({
+    id: row.$id,
+    code: row.code,
+    email: row.email,
+    role: row.role ?? "member",
+    expiresAt: row.expiresAt,
+    createdAt: row.$createdAt,
+  }));
+
+  return (
+    <div className="flex-1 space-y-6 px-6 pt-0">
+      <div className="flex flex-col gap-1">
+        <p className="text-muted-foreground text-sm">{ctx.settings?.companyName ?? "Çalışma alanı"}</p>
+        <h1 className="text-2xl font-bold tracking-tight">Ekip üyeleri</h1>
+        <p className="text-muted-foreground text-sm">
+          Çalışma alanına üye davet edin, rolleri yönetin.
+        </p>
+      </div>
+
+      {canManage ? (
+        <InviteForm />
+      ) : (
+        <p className="text-muted-foreground text-sm">
+          Yeni üye davet etmek için yönetici yetkisine ihtiyacınız var.
+        </p>
+      )}
+
+      {pendingInvites.length > 0 && (
+        <PendingInvitesTable invites={pendingInvites} canManage={canManage} />
+      )}
+
+      <MembersTable
+        members={members}
+        currentUserId={ctx.user.id}
+        isOwner={isOwner}
+        canManage={canManage}
+      />
+    </div>
+  );
+}

src/app/d/[code]/accept-invite-button.tsx

@@ -0,0 +1,50 @@
+"use client";
+
+import { useTransition } from "react";
+import { useRouter } from "next/navigation";
+import { CheckCircle2, Loader2 } from "lucide-react";
+
+import { Button } from "@/components/ui/button";
+import { acceptInviteAction } from "@/lib/appwrite/team-actions";
+import { useState } from "react";
+
+export function AcceptInviteButton({ code }: { code: string }) {
+  const [isPending, startTransition] = useTransition();
+  const [error, setError] = useState<string | null>(null);
+  const router = useRouter();
+
+  const handleAccept = () => {
+    setError(null);
+    startTransition(async () => {
+      const result = await acceptInviteAction(code);
+      if (result.ok) {
+        router.push("/dashboard");
+      } else {
+        setError(result.error ?? "Beklenmeyen hata.");
+      }
+    });
+  };
+
+  return (
+    <>
+      <Button onClick={handleAccept} disabled={isPending} className="w-full">
+        {isPending ? (
+          <>
+            <Loader2 className="size-4 animate-spin" />
+            Katılınıyor...
+          </>
+        ) : (
+          <>
+            <CheckCircle2 className="size-4" />
+            Daveti kabul et
+          </>
+        )}
+      </Button>
+      {error && (
+        <p className="text-destructive text-center text-sm" role="alert">
+          {error}
+        </p>
+      )}
+    </>
+  );
+}

src/app/d/[code]/page.tsx

@@ -0,0 +1,141 @@
+import type { Metadata } from "next";
+import Link from "next/link";
+
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+import { Logo } from "@/components/logo";
+import { resolveInviteCode } from "@/lib/appwrite/team-actions";
+import { createAdminClient, getCurrentUser } from "@/lib/appwrite/server";
+import { DATABASE_ID, TABLES, type TenantSettings } from "@/lib/appwrite/schema";
+import { AcceptInviteButton } from "./accept-invite-button";
+import { Query } from "node-appwrite";
+
+export const metadata: Metadata = {
+  title: "İşletmem — Davet",
+};
+
+async function getCompanyName(tenantId: string): Promise<string | null> {
+  try {
+    const { tablesDB } = createAdminClient();
+    const result = await tablesDB.listRows({
+      databaseId: DATABASE_ID,
+      tableId: TABLES.tenantSettings,
+      queries: [Query.equal("tenantId", tenantId), Query.limit(1)],
+    });
+    return (result.rows[0] as unknown as TenantSettings | undefined)?.companyName ?? null;
+  } catch {
+    return null;
+  }
+}
+
+export default async function InvitePage({
+  params,
+}: {
+  params: Promise<{ code: string }>;
+}) {
+  const { code } = await params;
+  const invite = await resolveInviteCode(code);
+  const user = await getCurrentUser();
+
+  return (
+    <div className="bg-muted flex min-h-svh flex-col items-center justify-center p-6 md:p-10">
+      <div className="flex w-full max-w-md flex-col gap-6">
+        <Link href="/" className="flex items-center justify-center gap-2 font-medium">
+          <div className="bg-primary text-primary-foreground flex size-9 items-center justify-center rounded-md">
+            <Logo size={22} />
+          </div>
+          <span className="text-xl font-semibold">İşletmem</span>
+        </Link>
+
+        {!invite || invite.status === "cancelled" ? (
+          <InvalidCard reason="Davet bulunamadı veya iptal edilmiş." />
+        ) : invite.status === "accepted" ? (
+          <InvalidCard reason="Bu davet daha önce kabul edilmiş." action="dashboard" />
+        ) : invite.expiresAt && new Date(invite.expiresAt).getTime() < Date.now() ? (
+          <InvalidCard reason="Bu davetin süresi dolmuş." />
+        ) : (
+          <ValidInvite
+            code={code}
+            email={invite.email}
+            role={invite.role ?? "member"}
+            companyName={(await getCompanyName(invite.tenantId)) ?? "Bir çalışma alanı"}
+            currentUserEmail={user?.email ?? null}
+          />
+        )}
+      </div>
+    </div>
+  );
+}
+
+function InvalidCard({ reason, action }: { reason: string; action?: "dashboard" }) {
+  return (
+    <Card>
+      <CardHeader className="text-center">
+        <CardTitle>Davet kullanılamıyor</CardTitle>
+        <CardDescription>{reason}</CardDescription>
+      </CardHeader>
+      <CardContent className="flex justify-center">
+        <Button asChild variant="outline">
+          <Link href={action === "dashboard" ? "/dashboard" : "/sign-in"}>
+            {action === "dashboard" ? "Panele git" : "Giriş yap"}
+          </Link>
+        </Button>
+      </CardContent>
+    </Card>
+  );
+}
+
+function ValidInvite({
+  code,
+  email,
+  role,
+  companyName,
+  currentUserEmail,
+}: {
+  code: string;
+  email: string;
+  role: string;
+  companyName: string;
+  currentUserEmail: string | null;
+}) {
+  const roleLabel = role === "admin" ? "Yönetici" : "Üye";
+  const emailMatches = currentUserEmail?.toLowerCase() === email.toLowerCase();
+
+  return (
+    <Card>
+      <CardHeader className="text-center">
+        <CardTitle className="text-2xl">{companyName}</CardTitle>
+        <CardDescription>
+          <strong>{email}</strong> olarak <strong>{roleLabel}</strong> rolüyle çalışma alanına davet
+          edildiniz.
+        </CardDescription>
+      </CardHeader>
+      <CardContent className="flex flex-col gap-3">
+        {!currentUserEmail ? (
+          <>
+            <Button asChild className="w-full">
+              <Link href={`/sign-up?invite=${code}&email=${encodeURIComponent(email)}`}>
+                Hesap oluşturup katıl
+              </Link>
+            </Button>
+            <Button asChild variant="outline" className="w-full">
+              <Link href={`/sign-in?invite=${code}`}>Zaten hesabım var, giriş yap</Link>
+            </Button>
+          </>
+        ) : emailMatches ? (
+          <AcceptInviteButton code={code} />
+        ) : (
+          <>
+            <p className="text-destructive text-center text-sm">
+              Şu an <strong>{currentUserEmail}</strong> ile giriş yapmışsınız. Davet{" "}
+              <strong>{email}</strong> içindir. Doğru hesabı kullanın.
+            </p>
+            <Button asChild variant="outline" className="w-full">
+              <Link href={`/sign-in?invite=${code}`}>Farklı hesapla giriş yap</Link>
+            </Button>
+          </>
+        )}
+      </CardContent>
+    </Card>
+  );
+}

src/lib/appwrite/audit.ts

@@ -0,0 +1,43 @@
+import "server-only";
+
+import { headers } from "next/headers";
+import { ID, Permission, Role } from "node-appwrite";
+
+import { createAdminClient } from "./server";
+import { DATABASE_ID, TABLES, type AuditAction } from "./schema";
+
+export async function logAudit(args: {
+  tenantId: string;
+  userId: string;
+  action: AuditAction;
+  entityType: string;
+  entityId: string;
+  changes?: Record<string, unknown>;
+}) {
+  try {
+    const h = await headers();
+    const ipAddress =
+      h.get("x-forwarded-for")?.split(",")[0]?.trim() || h.get("x-real-ip") || undefined;
+    const userAgent = h.get("user-agent")?.slice(0, 500) || undefined;
+
+    const { tablesDB } = createAdminClient();
+    await tablesDB.createRow(
+      DATABASE_ID,
+      TABLES.auditLogs,
+      ID.unique(),
+      {
+        tenantId: args.tenantId,
+        userId: args.userId,
+        action: args.action,
+        entityType: args.entityType,
+        entityId: args.entityId,
+        changes: args.changes ? JSON.stringify(args.changes).slice(0, 10000) : undefined,
+        ipAddress,
+        userAgent,
+      },
+      [Permission.read(Role.team(args.tenantId))],
+    );
+  } catch {
+    // audit failures must never block the user-facing operation
+  }
+}

src/lib/appwrite/auth-actions.ts

@@ -41,6 +41,7 @@ async function setSessionCookie(secret: string, expire: string) {
 export async function signInAction(_prev: AuthState, formData: FormData): Promise<AuthState> {
   const email = String(formData.get("email") ?? "").trim();
   const password = String(formData.get("password") ?? "");
+  const inviteCode = String(formData.get("inviteCode") ?? "").trim();
 
   if (!email || !password) {
     return { ok: false, error: "Email ve şifre zorunlu." };
@@ -54,13 +55,14 @@ export async function signInAction(_prev: AuthState, formData: FormData): Promis
     return { ok: false, error: appwriteError(e) };
   }
 
-  redirect("/dashboard");
+  redirect(inviteCode ? `/d/${inviteCode}` : "/dashboard");
 }
 
 export async function signUpAction(_prev: AuthState, formData: FormData): Promise<AuthState> {
   const name = String(formData.get("name") ?? "").trim();
   const email = String(formData.get("email") ?? "").trim();
   const password = String(formData.get("password") ?? "");
+  const inviteCode = String(formData.get("inviteCode") ?? "").trim();
 
   if (!name || !email || !password) {
     return { ok: false, error: "Tüm alanlar zorunlu." };
@@ -78,7 +80,7 @@ export async function signUpAction(_prev: AuthState, formData: FormData): Promis
     return { ok: false, error: appwriteError(e) };
   }
 
-  redirect("/onboarding");
+  redirect(inviteCode ? `/d/${inviteCode}` : "/onboarding");
 }
 
 export async function forgotPasswordAction(

src/lib/appwrite/schema.ts

@@ -12,6 +12,7 @@ export const TABLES = {
   invoices: "invoices",
   invoiceItems: "invoice_items",
   auditLogs: "audit_logs",
+  inviteLinks: "invite_links",
 } as const;
 
 export type TableId = (typeof TABLES)[keyof typeof TABLES];
@@ -173,3 +174,18 @@ export interface AuditLog extends Row {
   ipAddress?: string;
   userAgent?: string;
 }
+
+export type InviteRole = "admin" | "member";
+export type InviteStatus = "pending" | "accepted" | "cancelled" | "expired";
+
+export interface InviteLink extends Row {
+  tenantId: string;
+  code: string;
+  email: string;
+  role?: InviteRole;
+  status?: InviteStatus;
+  invitedBy: string;
+  expiresAt?: string;
+  acceptedAt?: string;
+  acceptedBy?: string;
+}

src/lib/appwrite/team-actions.ts

@@ -0,0 +1,377 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { AppwriteException, ID, Permission, Query, Role } from "node-appwrite";
+
+import { logAudit } from "./audit";
+import { DATABASE_ID, TABLES, type InviteLink, type InviteRole } from "./schema";
+import { createAdminClient, createSessionClient } from "./server";
+import { requireRole, requireTenant } from "./tenant-guard";
+import type { InviteState, MemberActionState } from "./team-types";
+
+const APP_URL = process.env.APP_URL ?? "http://localhost:3000";
+const INVITE_TTL_DAYS = 7;
+
+function appwriteError(e: unknown): string {
+  if (e instanceof AppwriteException) {
+    if (e.type === "team_invite_already_exists") return "Bu kişi zaten davetli.";
+    if (e.type === "team_membership_already_confirmed") return "Bu kişi zaten ekipte.";
+    if (e.type === "user_not_found") return "Kullanıcı bulunamadı.";
+    return e.message || "Beklenmeyen bir hata oluştu.";
+  }
+  return "Bağlantı hatası. Tekrar deneyin.";
+}
+
+function generateCode(length = 8): string {
+  const chars = "abcdefghijkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789";
+  let out = "";
+  const bytes = new Uint8Array(length);
+  crypto.getRandomValues(bytes);
+  for (let i = 0; i < length; i++) out += chars[bytes[i] % chars.length];
+  return out;
+}
+
+async function findUserByEmail(email: string) {
+  const { users } = createAdminClient();
+  const result = await users.list({
+    queries: [Query.equal("email", email), Query.limit(1)],
+  });
+  return result.users[0] ?? null;
+}
+
+export async function inviteMemberAction(
+  _prev: InviteState,
+  formData: FormData,
+): Promise<InviteState> {
+  const email = String(formData.get("email") ?? "").trim().toLowerCase();
+  const role = (String(formData.get("role") ?? "member") as InviteRole) === "admin"
+    ? "admin"
+    : "member";
+
+  if (!email || !/^[^@\s]+@[^@\s]+\.[^@\s]+$/.test(email)) {
+    return { ok: false, error: "Geçerli bir email girin." };
+  }
+
+  let ctx;
+  try {
+    ctx = await requireTenant();
+    requireRole(ctx, ["owner", "admin"]);
+  } catch {
+    return { ok: false, error: "Üye davet etme yetkiniz yok." };
+  }
+
+  if (email === ctx.user.email.toLowerCase()) {
+    return { ok: false, error: "Kendinizi davet edemezsiniz." };
+  }
+
+  const admin = createAdminClient();
+
+  // 1. Kullanıcı zaten Appwrite'ta var mı?
+  let existingUser = null;
+  try {
+    existingUser = await findUserByEmail(email);
+  } catch {
+    /* ignore */
+  }
+
+  // 2. Zaten ekipte mi?
+  if (existingUser) {
+    try {
+      const memberships = await admin.teams.listMemberships(ctx.tenantId);
+      if (memberships.memberships.some((m) => m.userId === existingUser!.$id)) {
+        return { ok: false, error: "Bu kullanıcı zaten ekipte." };
+      }
+    } catch {
+      /* ignore */
+    }
+  }
+
+  // 3. Pending davet var mı?
+  try {
+    const existing = await admin.tablesDB.listRows({
+      databaseId: DATABASE_ID,
+      tableId: TABLES.inviteLinks,
+      queries: [
+        Query.equal("tenantId", ctx.tenantId),
+        Query.equal("email", email),
+        Query.equal("status", "pending"),
+        Query.limit(1),
+      ],
+    });
+    const found = existing.rows[0] as unknown as InviteLink | undefined;
+    if (found) {
+      return {
+        ok: true,
+        shortUrl: `${APP_URL}/d/${found.code}`,
+        message: "Bu email için zaten aktif bir davet var. Mevcut linki kopyaladık.",
+      };
+    }
+  } catch {
+    /* continue */
+  }
+
+  // 4. Yeni davet linki üret
+  const code = generateCode(8);
+  const expiresAt = new Date(Date.now() + INVITE_TTL_DAYS * 24 * 60 * 60 * 1000).toISOString();
+
+  try {
+    const row = await admin.tablesDB.createRow(
+      DATABASE_ID,
+      TABLES.inviteLinks,
+      ID.unique(),
+      {
+        tenantId: ctx.tenantId,
+        code,
+        email,
+        role,
+        status: "pending",
+        invitedBy: ctx.user.id,
+        expiresAt,
+      },
+      [
+        Permission.read(Role.team(ctx.tenantId)),
+        Permission.update(Role.team(ctx.tenantId, "owner")),
+        Permission.update(Role.team(ctx.tenantId, "admin")),
+        Permission.delete(Role.team(ctx.tenantId, "owner")),
+        Permission.delete(Role.team(ctx.tenantId, "admin")),
+      ],
+    );
+
+    await logAudit({
+      tenantId: ctx.tenantId,
+      userId: ctx.user.id,
+      action: "create",
+      entityType: "invite",
+      entityId: row.$id,
+      changes: { email, role },
+    });
+  } catch (e) {
+    return { ok: false, error: appwriteError(e) };
+  }
+
+  revalidatePath("/settings/members");
+  return {
+    ok: true,
+    shortUrl: `${APP_URL}/d/${code}`,
+    message: existingUser
+      ? "Davet linki oluşturuldu. Linki bu kişiye iletin; tıklayınca giriş yapıp katılabilir."
+      : "Davet linki oluşturuldu. Linki bu kişiye iletin; tıklayınca hesap açıp katılabilir.",
+  };
+}
+
+export async function cancelInviteAction(
+  _prev: MemberActionState,
+  formData: FormData,
+): Promise<MemberActionState> {
+  const inviteId = String(formData.get("inviteId") ?? "");
+  if (!inviteId) return { ok: false, error: "Davet bulunamadı." };
+
+  let ctx;
+  try {
+    ctx = await requireTenant();
+    requireRole(ctx, ["owner", "admin"]);
+  } catch {
+    return { ok: false, error: "Yetkiniz yok." };
+  }
+
+  try {
+    const { tablesDB } = createAdminClient();
+    await tablesDB.updateRow(DATABASE_ID, TABLES.inviteLinks, inviteId, {
+      status: "cancelled",
+    });
+
+    await logAudit({
+      tenantId: ctx.tenantId,
+      userId: ctx.user.id,
+      action: "update",
+      entityType: "invite",
+      entityId: inviteId,
+      changes: { status: "cancelled" },
+    });
+  } catch (e) {
+    return { ok: false, error: appwriteError(e) };
+  }
+
+  revalidatePath("/settings/members");
+  return { ok: true };
+}
+
+export async function removeMemberAction(
+  _prev: MemberActionState,
+  formData: FormData,
+): Promise<MemberActionState> {
+  const membershipId = String(formData.get("membershipId") ?? "");
+  if (!membershipId) return { ok: false, error: "Üyelik bulunamadı." };
+
+  let ctx;
+  try {
+    ctx = await requireTenant();
+    requireRole(ctx, ["owner", "admin"]);
+  } catch {
+    return { ok: false, error: "Yetkiniz yok." };
+  }
+
+  try {
+    const { teams } = createAdminClient();
+    const memberships = await teams.listMemberships(ctx.tenantId);
+    const target = memberships.memberships.find((m) => m.$id === membershipId);
+
+    if (!target) return { ok: false, error: "Üyelik bulunamadı." };
+    if (target.userId === ctx.user.id) {
+      return { ok: false, error: "Kendinizi çıkaramazsınız." };
+    }
+    if (target.roles.includes("owner") && ctx.role !== "owner") {
+      return { ok: false, error: "Sahibi yalnızca başka bir sahip kaldırabilir." };
+    }
+
+    await teams.deleteMembership(ctx.tenantId, membershipId);
+
+    await logAudit({
+      tenantId: ctx.tenantId,
+      userId: ctx.user.id,
+      action: "delete",
+      entityType: "membership",
+      entityId: membershipId,
+      changes: { userEmail: target.userEmail },
+    });
+  } catch (e) {
+    return { ok: false, error: appwriteError(e) };
+  }
+
+  revalidatePath("/settings/members");
+  return { ok: true };
+}
+
+export async function updateMemberRoleAction(
+  _prev: MemberActionState,
+  formData: FormData,
+): Promise<MemberActionState> {
+  const membershipId = String(formData.get("membershipId") ?? "");
+  const role = String(formData.get("role") ?? "");
+  if (!membershipId || !["admin", "member"].includes(role)) {
+    return { ok: false, error: "Geçersiz parametre." };
+  }
+
+  let ctx;
+  try {
+    ctx = await requireTenant();
+    requireRole(ctx, ["owner"]);
+  } catch {
+    return { ok: false, error: "Sadece sahibi rol değiştirebilir." };
+  }
+
+  try {
+    const { teams } = createAdminClient();
+    await teams.updateMembership(ctx.tenantId, membershipId, [role]);
+
+    await logAudit({
+      tenantId: ctx.tenantId,
+      userId: ctx.user.id,
+      action: "update",
+      entityType: "membership",
+      entityId: membershipId,
+      changes: { role },
+    });
+  } catch (e) {
+    return { ok: false, error: appwriteError(e) };
+  }
+
+  revalidatePath("/settings/members");
+  return { ok: true };
+}
+
+/**
+ * Resolve a short invite code to its row. Used by /d/[code] (public-ish).
+ * Returns minimal info; callers should not pass full row to client.
+ */
+export async function resolveInviteCode(code: string): Promise<InviteLink | null> {
+  if (!code) return null;
+  try {
+    const { tablesDB } = createAdminClient();
+    const result = await tablesDB.listRows({
+      databaseId: DATABASE_ID,
+      tableId: TABLES.inviteLinks,
+      queries: [Query.equal("code", code), Query.limit(1)],
+    });
+    return (result.rows[0] as unknown as InviteLink) ?? null;
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * Accept an invite for the currently logged-in user. Caller is responsible
+ * for ensuring session.email matches invite.email (we double-check here too).
+ */
+export async function acceptInviteAction(code: string): Promise<MemberActionState> {
+  if (!code) return { ok: false, error: "Geçersiz davet linki." };
+
+  let user;
+  try {
+    const session = await createSessionClient();
+    user = await session.account.get();
+  } catch {
+    return { ok: false, error: "Önce giriş yapmanız gerekiyor." };
+  }
+
+  const invite = await resolveInviteCode(code);
+  if (!invite) return { ok: false, error: "Davet bulunamadı." };
+  if (invite.status !== "pending") {
+    return { ok: false, error: "Bu davet artık geçerli değil." };
+  }
+  if (invite.expiresAt && new Date(invite.expiresAt).getTime() < Date.now()) {
+    return { ok: false, error: "Bu davetin süresi dolmuş." };
+  }
+  if (invite.email.toLowerCase() !== user.email.toLowerCase()) {
+    return {
+      ok: false,
+      error: `Bu davet ${invite.email} adresine gönderilmiş; mevcut hesabınız (${user.email}) eşleşmiyor.`,
+    };
+  }
+
+  const admin = createAdminClient();
+
+  // Already a member? Mark accepted, redirect.
+  try {
+    const memberships = await admin.teams.listMemberships(invite.tenantId);
+    const existing = memberships.memberships.find((m) => m.userId === user.$id);
+    if (existing) {
+      await admin.tablesDB.updateRow(DATABASE_ID, TABLES.inviteLinks, invite.$id, {
+        status: "accepted",
+        acceptedAt: new Date().toISOString(),
+        acceptedBy: user.$id,
+      });
+      return { ok: true };
+    }
+  } catch {
+    /* ignore */
+  }
+
+  try {
+    await admin.teams.createMembership(
+      invite.tenantId,
+      [invite.role ?? "member"],
+      undefined,
+      user.$id,
+    );
+
+    await admin.tablesDB.updateRow(DATABASE_ID, TABLES.inviteLinks, invite.$id, {
+      status: "accepted",
+      acceptedAt: new Date().toISOString(),
+      acceptedBy: user.$id,
+    });
+
+    await logAudit({
+      tenantId: invite.tenantId,
+      userId: user.$id,
+      action: "create",
+      entityType: "membership",
+      entityId: invite.$id,
+      changes: { via: "invite", code },
+    });
+  } catch (e) {
+    return { ok: false, error: appwriteError(e) };
+  }
+
+  return { ok: true };
+}

src/lib/appwrite/team-types.ts

@@ -0,0 +1,15 @@
+export type InviteState = {
+  ok: boolean;
+  error?: string;
+  shortUrl?: string;
+  message?: string;
+};
+
+export const initialInviteState: InviteState = { ok: false };
+
+export type MemberActionState = {
+  ok: boolean;
+  error?: string;
+};
+
+export const initialMemberState: MemberActionState = { ok: false };

src/lib/appwrite/tenant-guard.ts

@@ -0,0 +1,64 @@
+import "server-only";
+
+import { Query } from "node-appwrite";
+
+import { createAdminClient, getCurrentUser } from "./server";
+import { DATABASE_ID, TABLES, type TenantSettings } from "./schema";
+import { getActiveTenantId } from "./tenant";
+
+export type TenantRole = "owner" | "admin" | "member";
+
+export type TenantContext = {
+  user: { id: string; name: string; email: string };
+  tenantId: string;
+  role: TenantRole;
+  settings: TenantSettings | null;
+};
+
+function pickHighestRole(roles: string[]): TenantRole | null {
+  if (roles.includes("owner")) return "owner";
+  if (roles.includes("admin")) return "admin";
+  if (roles.includes("member")) return "member";
+  return null;
+}
+
+export async function requireTenant(): Promise<TenantContext> {
+  const user = await getCurrentUser();
+  if (!user) throw new Error("UNAUTHENTICATED");
+
+  const tenantId = await getActiveTenantId();
+  if (!tenantId) throw new Error("NO_TENANT");
+
+  const { tablesDB, teams } = createAdminClient();
+
+  const memberships = await teams.listMemberships(tenantId);
+  const membership = memberships.memberships.find((m) => m.userId === user.$id);
+  if (!membership) throw new Error("NOT_A_MEMBER");
+
+  const role = pickHighestRole(membership.roles) ?? "member";
+
+  let settings: TenantSettings | null = null;
+  try {
+    const result = await tablesDB.listRows({
+      databaseId: DATABASE_ID,
+      tableId: TABLES.tenantSettings,
+      queries: [Query.equal("tenantId", tenantId), Query.limit(1)],
+    });
+    settings = (result.rows[0] as unknown as TenantSettings) ?? null;
+  } catch {
+    settings = null;
+  }
+
+  return {
+    user: { id: user.$id, name: user.name, email: user.email },
+    tenantId,
+    role,
+    settings,
+  };
+}
+
+export function requireRole(ctx: TenantContext, allowed: TenantRole[]): void {
+  if (!allowed.includes(ctx.role)) {
+    throw new Error("FORBIDDEN");
+  }
+}