feat(admin): full-screen forms + WYSIWYG rich-text editor

- AdminResource + TemplatesAdmin modals are now large full-height panels
  (max-w-5xl, sticky header/footer, scrolling body, 2-column field grid;
  textarea/richtext span full width)
- RichTextField: dependency-free contentEditable WYSIWYG (bold/italic/underline,
  H2/H3/¶, lists, link, clear) emitting HTML, dir="auto" for fa/en
- blog content + category description now use the rich editor

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/components/admin/AdminResource.tsx

@@ -4,11 +4,12 @@ import { useCallback, useEffect, useState, type ReactNode } from "react";
 
 import { FileUploadField } from "@/components/admin/FileUploadField";
 import { AdminThumb } from "@/components/admin/AdminThumb";
+import { RichTextField } from "@/components/admin/RichTextField";
 
 export interface FieldDef {
   key: string;
   label: string;
-  type?: "text" | "textarea" | "number" | "checkbox" | "select" | "image" | "file";
+  type?: "text" | "textarea" | "richtext" | "number" | "checkbox" | "select" | "image" | "file";
   options?: { value: string; label: string }[];
   required?: boolean;
   placeholder?: string;
@@ -193,21 +194,26 @@ export function AdminResource({ config }: { config: ResourceConfig }) {
       </div>
 
       {(creating || editing) && config.fields && (
-        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/60 p-4" onClick={closeForm}>
-          <div className={`${card} w-full max-w-lg p-5`} onClick={(e) => e.stopPropagation()}>
-            <h2 className="text-sm font-semibold text-white">
-              {editing ? "ویرایش" : "افزودن"} — {config.title}
-            </h2>
-            <div className="mt-4 grid max-h-[60vh] gap-3 overflow-y-auto pr-1">
+        <div className="fixed inset-0 z-50 flex items-stretch justify-center bg-black/70 p-2 sm:p-6" onClick={closeForm}>
+          <div className={`${card} flex max-h-full w-full max-w-5xl flex-col`} onClick={(e) => e.stopPropagation()}>
+            <div className="flex items-center justify-between border-b border-[#1e2235] px-5 py-3">
+              <h2 className="text-sm font-semibold text-white">
+                {editing ? "ویرایش" : "افزودن"} — {config.title}
+              </h2>
+              <button className="rounded-lg px-2 py-1 text-gray-400 hover:bg-[#161a2e] hover:text-white" onClick={closeForm}>✕</button>
+            </div>
+            <div className="grid flex-1 grid-cols-1 gap-4 overflow-y-auto p-5 sm:grid-cols-2">
               {config.fields.map((f) => (
-                <div key={f.key}>
+                <div key={f.key} className={f.type === "textarea" || f.type === "richtext" ? "sm:col-span-2" : ""}>
                   {f.type !== "checkbox" && (
                     <label className="mb-1 block text-xs font-medium text-gray-400">
                       {f.label}{f.required && <span className="text-red-400"> *</span>}
                     </label>
                   )}
-                  {f.type === "textarea" ? (
-                    <textarea className={`${inputCls} min-h-[80px]`} placeholder={f.placeholder}
+                  {f.type === "richtext" ? (
+                    <RichTextField value={String(form[f.key] ?? "")} onChange={(html) => setForm({ ...form, [f.key]: html })} />
+                  ) : f.type === "textarea" ? (
+                    <textarea className={`${inputCls} min-h-[160px]`} placeholder={f.placeholder}
                       value={String(form[f.key] ?? "")} onChange={(e) => setForm({ ...form, [f.key]: e.target.value })} />
                   ) : f.type === "select" ? (
                     <select className={inputCls} value={String(form[f.key] ?? "")}
@@ -234,7 +240,7 @@ export function AdminResource({ config }: { config: ResourceConfig }) {
                 </div>
               ))}
             </div>
-            <div className="mt-5 flex items-center justify-end gap-2">
+            <div className="flex items-center justify-end gap-2 border-t border-[#1e2235] px-5 py-3">
               <button className={btnGhost} onClick={closeForm}>انصراف</button>
               <button className={btn} onClick={submit} disabled={saving}>{saving ? "در حال ذخیره…" : "ذخیره"}</button>
             </div>

src/components/admin/RichTextField.tsx

@@ -0,0 +1,76 @@
+"use client";
+
+import { useEffect, useRef } from "react";
+
+/**
+ * Dependency-free WYSIWYG HTML editor for large/rich admin text (blog content,
+ * descriptions). contentEditable + a small toolbar; emits HTML. dir="auto" so
+ * Persian and English paragraphs each align correctly.
+ */
+export function RichTextField({ value, onChange }: { value: string; onChange: (html: string) => void }) {
+  const ref = useRef<HTMLDivElement>(null);
+
+  // Seed content once on mount (and when switching records) without fighting the caret.
+  useEffect(() => {
+    if (ref.current && ref.current.innerHTML !== (value || "")) {
+      ref.current.innerHTML = value || "";
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const emit = () => onChange(ref.current?.innerHTML ?? "");
+  const exec = (cmd: string, arg?: string) => {
+    ref.current?.focus();
+    document.execCommand(cmd, false, arg);
+    emit();
+  };
+  const link = () => {
+    const url = prompt("نشانی لینک:");
+    if (url) exec("createLink", url);
+  };
+
+  const Btn = ({ label, title, cmd, arg }: { label: string; title: string; cmd: string; arg?: string }) => (
+    <button
+      type="button"
+      title={title}
+      onMouseDown={(e) => e.preventDefault()}
+      onClick={() => exec(cmd, arg)}
+      className="rounded px-2 py-1 text-xs text-gray-300 hover:bg-[#1e2235]"
+    >
+      {label}
+    </button>
+  );
+
+  return (
+    <div className="rounded-lg border border-[#262b40] bg-[#0c0e1a]">
+      <div className="flex flex-wrap items-center gap-0.5 border-b border-[#262b40] p-1.5">
+        <Btn label="B" title="ضخیم" cmd="bold" />
+        <Btn label="I" title="مورب" cmd="italic" />
+        <Btn label="U" title="زیرخط" cmd="underline" />
+        <span className="mx-1 h-4 w-px bg-[#262b40]" />
+        <Btn label="H2" title="عنوان ۲" cmd="formatBlock" arg="<h2>" />
+        <Btn label="H3" title="عنوان ۳" cmd="formatBlock" arg="<h3>" />
+        <Btn label="¶" title="پاراگراف" cmd="formatBlock" arg="<p>" />
+        <span className="mx-1 h-4 w-px bg-[#262b40]" />
+        <Btn label="• فهرست" title="فهرست نقطه‌ای" cmd="insertUnorderedList" />
+        <Btn label="۱. فهرست" title="فهرست شماره‌دار" cmd="insertOrderedList" />
+        <button type="button" title="لینک" onMouseDown={(e) => e.preventDefault()} onClick={link} className="rounded px-2 py-1 text-xs text-gray-300 hover:bg-[#1e2235]">لینک</button>
+        <span className="mx-1 h-4 w-px bg-[#262b40]" />
+        <Btn label="پاک‌کردن قالب" title="حذف قالب‌بندی" cmd="removeFormat" />
+      </div>
+      <div
+        ref={ref}
+        contentEditable
+        dir="auto"
+        onInput={emit}
+        onBlur={emit}
+        className="min-h-[260px] max-h-[55vh] overflow-y-auto p-3 text-sm leading-7 text-gray-100 outline-none
+                   [&_a]:text-indigo-400 [&_a]:underline
+                   [&_h2]:my-2 [&_h2]:text-lg [&_h2]:font-bold [&_h2]:text-white
+                   [&_h3]:my-2 [&_h3]:text-base [&_h3]:font-semibold [&_h3]:text-white
+                   [&_ul]:my-2 [&_ul]:list-disc [&_ul]:ps-6 [&_ol]:my-2 [&_ol]:list-decimal [&_ol]:ps-6
+                   [&_p]:my-1"
+      />
+    </div>
+  );
+}

src/components/admin/TemplatesAdmin.tsx

@@ -259,10 +259,13 @@ export function TemplatesAdmin() {
       </div>
 
       {open && (
-        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/60 p-4" onClick={() => setOpen(false)}>
-          <div className={`${card} w-full max-w-2xl p-5`} onClick={(e) => e.stopPropagation()}>
-            <h2 className="text-sm font-semibold text-white">{editId ? "ویرایش قالب" : "قالب جدید"}</h2>
-            <div className="mt-4 grid max-h-[65vh] gap-3 overflow-y-auto pr-1">
+        <div className="fixed inset-0 z-50 flex items-stretch justify-center bg-black/70 p-2 sm:p-6" onClick={() => setOpen(false)}>
+          <div className={`${card} flex max-h-full w-full max-w-5xl flex-col`} onClick={(e) => e.stopPropagation()}>
+            <div className="flex items-center justify-between border-b border-[#1e2235] px-5 py-3">
+              <h2 className="text-sm font-semibold text-white">{editId ? "ویرایش قالب" : "قالب جدید"}</h2>
+              <button className="rounded-lg px-2 py-1 text-gray-400 hover:bg-[#161a2e] hover:text-white" onClick={() => setOpen(false)}>✕</button>
+            </div>
+            <div className="grid flex-1 gap-3 overflow-y-auto p-5">
               <div className="grid gap-3 sm:grid-cols-2">
                 <div><label className={lbl}>نام *</label><input className={inp} value={form.name} onChange={(e) => setForm({ ...form, name: e.target.value })} /></div>
                 <div><label className={lbl}>اسلاگ (نشانی) *</label><input className={inp} value={form.slug} onChange={(e) => setForm({ ...form, slug: e.target.value })} /></div>
@@ -375,7 +378,7 @@ export function TemplatesAdmin() {
                 <p className="rounded-lg border border-dashed border-[#262b40] p-3 text-[11px] text-gray-500">پس از ذخیرهٔ قالب، می‌توانید نسخه‌ها و فایل‌های افترافکت را اضافه کنید.</p>
               )}
             </div>
-            <div className="mt-5 flex items-center justify-end gap-2">
+            <div className="flex items-center justify-end gap-2 border-t border-[#1e2235] px-5 py-3">
               <button className={ghost} onClick={() => setOpen(false)}>انصراف</button>
               <button className={btn} onClick={save} disabled={saving || !form.name || !form.slug}>{saving ? "در حال ذخیره…" : "ذخیره"}</button>
             </div>

src/components/admin/admin-resources.tsx

@@ -53,7 +53,7 @@ export const categoriesConfig: ResourceConfig = {
   fields: [
     { key: "name", label: "نام", required: true },
     { key: "slug", label: "اسلاگ (نشانی)", required: true },
-    { key: "description", label: "توضیحات / محتوا", type: "textarea" },
+    { key: "description", label: "توضیحات / محتوا", type: "richtext" },
     { key: "image_url", label: "تصویر", type: "image" },
     { key: "icon", label: "آیکون (کد SVG یا نام آیکون)", type: "textarea" },
     // SEO
@@ -157,7 +157,7 @@ export const blogsConfig: ResourceConfig = {
     { key: "title", label: "عنوان", required: true },
     { key: "slug", label: "اسلاگ (نشانی)", required: true },
     { key: "short_description", label: "توضیح کوتاه", type: "textarea" },
-    { key: "content", label: "محتوا (HTML)", type: "textarea", required: true },
+    { key: "content", label: "محتوا", type: "richtext", required: true },
     { key: "meta_title", label: "عنوان متا" },
     { key: "meta_description", label: "توضیحات متا", type: "textarea" },
     { key: "meta_keywords", label: "کلمات کلیدی متا" },