diff --git a/src/features/community-posts/api/community-post-api.ts b/src/features/community-posts/api/community-post-api.ts
new file mode 100644
index 0000000..838e639
--- /dev/null
+++ b/src/features/community-posts/api/community-post-api.ts
@@ -0,0 +1,89 @@
+import { z } from "zod";
+
+import { communityPostCreateRequestSchema, communityPostListResponseSchema, communityPostUpdateRequestSchema } from "@/features/community-posts/model/types";
+import type { CommunityPostCreateRequest, CommunityPostListData, CommunityPostUpdateRequest } from "@/features/community-posts/model/types";
+import type { ApiClient } from "@/shared/api/client";
+
+export type GetCommunityPostsParams = {
+  readonly characterId: string;
+  readonly page?: number;
+  readonly size?: number;
+};
+
+export type UpdateCommunityPostParams = {
+  readonly postImage?: File;
+  readonly request: CommunityPostUpdateRequest;
+};
+
+export type CreateCommunityPostParams = {
+  readonly audioFile?: File;
+  readonly postImage?: File;
+  readonly request: CommunityPostCreateRequest;
+};
+
+const nullSuccessSchema = z.null();
+
+function normalizePage(value: number | undefined): number {
+  return Math.max(0, Math.trunc(value ?? 0));
+}
+
+function normalizeSize(value: number | undefined): number {
+  return Math.max(1, Math.trunc(value ?? 20));
+}
+
+function createCommunityPostBody(audioFile: File | undefined, postImage: File | undefined, request: object): FormData {
+  const body = new FormData();
+  if (audioFile !== undefined) {
+    body.append("audioFile", audioFile);
+  }
+  if (postImage !== undefined) {
+    body.append("postImage", postImage);
+  }
+  body.append("request", new Blob([JSON.stringify(request)], { type: "application/json" }));
+
+  return body;
+}
+
+function createCommunityPostCreateBody(params: CreateCommunityPostParams): FormData {
+  return createCommunityPostBody(params.audioFile, params.postImage, communityPostCreateRequestSchema.parse(params.request));
+}
+
+function createCommunityPostUpdateBody(params: UpdateCommunityPostParams): FormData {
+  return createCommunityPostBody(undefined, params.postImage, communityPostUpdateRequestSchema.parse(params.request));
+}
+
+export async function getCommunityPosts(apiClient: ApiClient, params: GetCommunityPostsParams): Promise<CommunityPostListData> {
+  const page = normalizePage(params.page);
+  const size = normalizeSize(params.size);
+  const query = new URLSearchParams({ page: String(page), size: String(size) });
+
+  return apiClient.request({
+    path: `/api/v2/admin/ai-characters/${encodeURIComponent(params.characterId)}/community-posts?${query.toString()}`,
+    responseSchema: communityPostListResponseSchema,
+    authentication: "required",
+  });
+}
+
+export function updateCommunityPost(apiClient: ApiClient, characterId: string, postId: string, params: UpdateCommunityPostParams): Promise<null> {
+  return apiClient.request({
+    path: `/api/v2/admin/ai-characters/${encodeURIComponent(characterId)}/community-posts/${encodeURIComponent(postId)}`,
+    method: "PUT",
+    body: createCommunityPostUpdateBody(params),
+    responseSchema: nullSuccessSchema,
+    authentication: "required",
+  });
+}
+
+export function createCommunityPost(apiClient: ApiClient, characterId: string, params: CreateCommunityPostParams): Promise<null> {
+  return apiClient.request({
+    path: `/api/v2/admin/ai-characters/${encodeURIComponent(characterId)}/community-posts`,
+    method: "POST",
+    body: createCommunityPostCreateBody(params),
+    responseSchema: nullSuccessSchema,
+    authentication: "required",
+  });
+}
+
+export function softDeleteCommunityPost(apiClient: ApiClient, characterId: string, postId: string): Promise<null> {
+  return updateCommunityPost(apiClient, characterId, postId, { request: { isActive: false, isFixed: false } });
+}
diff --git a/src/features/community-posts/components/CommunityPostForm.tsx b/src/features/community-posts/components/CommunityPostForm.tsx
new file mode 100644
index 0000000..1d6725e
--- /dev/null
+++ b/src/features/community-posts/components/CommunityPostForm.tsx
@@ -0,0 +1,177 @@
+import { useEffect, useRef, useState } from "react";
+
+import { createCommunityPost } from "@/features/community-posts/api/community-post-api";
+import { communityPostAudioErrorMessage, formatCommunityPostPrice, hasCommunityPostFormErrors, parseCommunityPostPrice } from "@/features/community-posts/components/community-post-form-helpers";
+import type { CommunityPostFormErrors } from "@/features/community-posts/components/community-post-form-helpers";
+import { COMMUNITY_POST_IMAGE_POLICY, prepareCommunityPostImage } from "@/features/community-posts/validation/community-post-media-policy";
+import { ApiError } from "@/shared/api/api-error";
+import type { ApiClient } from "@/shared/api/client";
+import type { CropRenderRequest } from "@/shared/lib/crop-image";
+import { focusFirstInvalidControl } from "@/shared/lib/focus-first-invalid-control";
+import { FileField } from "@/shared/ui/file-field";
+import { ImageCropDialog } from "@/shared/ui/image-crop-dialog";
+import type { CropSourceImage } from "@/shared/ui/image-crop-dialog";
+import { AUDIO_FILE_POLICY } from "@/shared/validation/audio-file-policy";
+import { CAN_PRICE_MAX } from "@/shared/validation/can-price";
+
+type CommunityPostFormProps = {
+  readonly apiClient: ApiClient;
+  readonly characterId: string;
+  readonly createCropSource: (file: File) => Promise<CropSourceImage>;
+  readonly onCreated: () => void;
+  readonly renderCrop?: (request: CropRenderRequest) => Promise<File>;
+};
+
+const errorIds = {
+  content: "community-post-content-error",
+  price: "community-post-price-error",
+} as const;
+
+function buildCreateRequest(content: string, isAdult: boolean, isCommentAvailable: boolean, price: number | null) {
+  const base = { content, isAdult, isCommentAvailable };
+
+  return price === null ? base : { ...base, price };
+}
+
+export function CommunityPostForm({ apiClient, characterId, createCropSource, onCreated, renderCrop }: CommunityPostFormProps) {
+  const [audioFile, setAudioFile] = useState<File | null>(null);
+  const [content, setContent] = useState("");
+  const [cropSource, setCropSource] = useState<CropSourceImage | null>(null);
+  const [errors, setErrors] = useState<CommunityPostFormErrors>({});
+  const [isAdult, setIsAdult] = useState(false);
+  const [isCommentAvailable, setIsCommentAvailable] = useState(true);
+  const [isImagePreparing, setIsImagePreparing] = useState(false);
+  const [isSaving, setIsSaving] = useState(false);
+  const [postImage, setPostImage] = useState<File | null>(null);
+  const [price, setPrice] = useState("");
+  const formRef = useRef<HTMLFormElement>(null);
+  const imageSelectionId = useRef(0);
+  const isSavingRef = useRef(false);
+
+  useEffect(() => () => cropSource?.release?.(), [cropSource]);
+
+  async function selectPostImage(file: File | null) {
+    imageSelectionId.current += 1;
+    const currentSelectionId = imageSelectionId.current;
+    if (file === null) {
+      setPostImage(null);
+      setCropSource(null);
+      setIsImagePreparing(false);
+      setErrors((current) => ({ ...current, image: undefined }));
+      return;
+    }
+
+    setIsImagePreparing(true);
+    try {
+      const prepared = await prepareCommunityPostImage(file, createCropSource);
+      if (currentSelectionId !== imageSelectionId.current) {
+        if (prepared.kind === "crop") {
+          prepared.source.release?.();
+        }
+        return;
+      }
+      switch (prepared.kind) {
+        case "cleared":
+          setPostImage(null);
+          setCropSource(null);
+          setErrors((current) => ({ ...current, image: undefined }));
+          break;
+        case "crop":
+          setPostImage(null);
+          setCropSource(prepared.source);
+          setErrors((current) => ({ ...current, image: undefined }));
+          break;
+        case "error":
+          setPostImage(null);
+          setCropSource(null);
+          setErrors((current) => ({ ...current, image: prepared.message }));
+          break;
+        case "ready":
+          setPostImage(prepared.file);
+          setCropSource(null);
+          setErrors((current) => ({ ...current, image: undefined }));
+          break;
+      }
+    } catch (error: unknown) {
+      if (currentSelectionId !== imageSelectionId.current) {
+        return;
+      }
+      if (error instanceof Error) {
+        setErrors((current) => ({ ...current, image: "이미지 미리보기를 불러오지 못했습니다." }));
+        return;
+      }
+      throw error;
+    } finally {
+      if (currentSelectionId === imageSelectionId.current) {
+        setIsImagePreparing(false);
+      }
+    }
+  }
+
+  function validateForm(): CommunityPostFormErrors {
+    const parsedPrice = parseCommunityPostPrice(price);
+    const hasPriceInput = price.trim().length > 0;
+
+    return {
+      audio: communityPostAudioErrorMessage(audioFile),
+      content: content.trim().length === 0 ? "내용을 입력하세요." : undefined,
+      image: isImagePreparing || cropSource !== null ? "이미지 처리가 끝난 뒤 저장하세요." : errors.image,
+      price: (hasPriceInput && parsedPrice === null) || (parsedPrice !== null && (!Number.isInteger(parsedPrice) || parsedPrice < 0 || parsedPrice > CAN_PRICE_MAX)) ? "가격은 0 이상 99,999 이하 정수 캔으로 입력하세요." : undefined,
+    };
+  }
+
+  async function submit(event: { readonly preventDefault: () => void }) {
+    event.preventDefault();
+    if (isSavingRef.current) {
+      return;
+    }
+    const nextErrors = validateForm();
+    setErrors(nextErrors);
+    if (hasCommunityPostFormErrors(nextErrors)) {
+      queueMicrotask(() => focusFirstInvalidControl(formRef.current));
+      return;
+    }
+
+    isSavingRef.current = true;
+    setIsSaving(true);
+    try {
+      await createCommunityPost(apiClient, characterId, {
+        audioFile: audioFile ?? undefined,
+        postImage: postImage ?? undefined,
+        request: buildCreateRequest(content.trim(), isAdult, isCommentAvailable, parseCommunityPostPrice(price)),
+      });
+      onCreated();
+    } catch (error: unknown) {
+      setErrors({ form: error instanceof ApiError ? error.message : "커뮤니티 게시글을 생성하지 못했습니다." });
+    } finally {
+      isSavingRef.current = false;
+      setIsSaving(false);
+    }
+  }
+
+  return (
+    <section className="flex flex-col gap-4" aria-labelledby="community-post-form-title">
+      <div className="flex flex-col gap-2">
+        <p className="text-xs font-semibold text-info">COMMUNITY</p>
+        <h2 className="text-2xl font-bold leading-tight" id="community-post-form-title">커뮤니티 게시글 생성</h2>
+        <p className="text-sm text-muted-foreground">내용과 첨부 파일은 저장 전 운영 기준에 맞게 검토하세요. GIF는 crop 없이 원본을 보존합니다.</p>
+      </div>
+      <form aria-label="커뮤니티 게시글 생성 입력 화면" className="flex flex-col gap-4 rounded-lg border border-border bg-card p-4" onSubmit={(event) => void submit(event)} ref={formRef}>
+        <label className="flex flex-col gap-2 text-sm font-semibold">내용<textarea aria-describedby={errors.content === undefined ? undefined : errorIds.content} aria-invalid={errors.content === undefined ? undefined : true} className="min-h-32 rounded-md border border-input bg-card px-3 py-2 text-base font-normal text-foreground" onChange={(event) => setContent(event.currentTarget.value)} value={content} /></label>
+        {errors.content === undefined ? null : <p className="text-sm font-semibold text-destructive" id={errorIds.content} role="alert">{errors.content}</p>}
+        <label className="flex flex-col gap-2 text-sm font-semibold">가격<input aria-describedby={errors.price === undefined ? undefined : errorIds.price} aria-invalid={errors.price === undefined ? undefined : true} className="rounded-md border border-input bg-card px-3 py-2 text-base font-normal text-foreground" inputMode="numeric" onChange={(event) => setPrice(formatCommunityPostPrice(event.currentTarget.value))} value={price} /></label>
+        {errors.price === undefined ? null : <p className="text-sm font-semibold text-destructive" id={errorIds.price} role="alert">{errors.price}</p>}
+        <label className="flex items-center gap-2 text-sm font-semibold"><input checked={isCommentAvailable} onChange={(event) => setIsCommentAvailable(event.currentTarget.checked)} type="checkbox" />댓글 허용</label>
+        <label className="flex items-center gap-2 text-sm font-semibold"><input checked={isAdult} onChange={(event) => setIsAdult(event.currentTarget.checked)} type="checkbox" />성인 콘텐츠</label>
+        <FileField accept={AUDIO_FILE_POLICY.allowedMimeTypes.join(",")} acceptDescription="MP3, AAC, M4A, 최대 1,024,000,000 bytes. WAV는 지원하지 않습니다." error={errors.audio} label="오디오 파일" onChange={setAudioFile} value={audioFile} />
+        <FileField accept="image/jpeg,image/png,image/gif" acceptDescription="JPEG 또는 PNG는 자유 ratio crop 후 최대 800px로 전송합니다. GIF는 원본 width 800px 이하만 crop 없이 전송합니다." error={errors.image} label="게시글 이미지" onChange={(file) => void selectPostImage(file)} value={postImage} />
+        {errors.form === undefined ? null : <p className="text-sm font-semibold text-destructive" role="alert">{errors.form}</p>}
+        {isSaving ? <p className="rounded-md border border-border bg-muted p-3 text-sm font-semibold" role="status">커뮤니티 게시글을 저장하는 중</p> : null}
+        <div className="flex justify-end gap-2">
+          <button className="rounded-md border border-input bg-primary px-4 py-2 font-semibold text-primary-foreground hover:bg-[var(--button-bg-hover)] active:bg-[var(--button-bg-active)] disabled:opacity-60" disabled={isSaving || isImagePreparing || cropSource !== null} type="submit">생성</button>
+        </div>
+      </form>
+      {cropSource === null ? null : <ImageCropDialog image={cropSource} onApply={(file) => { setPostImage(file); setCropSource(null); setErrors((current) => ({ ...current, image: undefined })); }} onCancel={() => setCropSource(null)} open policy={COMMUNITY_POST_IMAGE_POLICY} renderCrop={renderCrop} />}
+    </section>
+  );
+}
diff --git a/src/features/community-posts/components/CommunityPostList.tsx b/src/features/community-posts/components/CommunityPostList.tsx
new file mode 100644
index 0000000..bf6b8bc
--- /dev/null
+++ b/src/features/community-posts/components/CommunityPostList.tsx
@@ -0,0 +1,45 @@
+import { CommunityPostListItem } from "@/features/community-posts/components/CommunityPostListItem";
+import { formatCommunityPostStatus } from "@/features/community-posts/lib/community-post-display-labels";
+import type { CommunityPostListData } from "@/features/community-posts/model/types";
+import { AdminAudioPlayer } from "@/shared/ui/admin-audio-player";
+import { ResponsiveResourceList } from "@/shared/ui/responsive-resource-list";
+
+function formatCan(price: number): string {
+  return `${price.toLocaleString("ko-KR")}캔`;
+}
+
+export function CommunityPostList({ data, onOpen }: { readonly data: CommunityPostListData; readonly onOpen: (postId: number) => void }) {
+  const desktop = (
+    <table className="min-w-full border-separate border-spacing-0 text-left text-sm">
+      <thead className="text-muted-foreground">
+        <tr>
+          <th className="border-b border-border px-4 py-3 font-semibold" scope="col">게시글</th>
+          <th className="border-b border-border px-4 py-3 font-semibold" scope="col">상태</th>
+          <th className="border-b border-border px-4 py-3 font-semibold" scope="col">반응</th>
+          <th className="border-b border-border px-4 py-3 font-semibold" scope="col">열기</th>
+        </tr>
+      </thead>
+      <tbody>
+        {data.items.map((post) => (
+          <tr key={post.postId}>
+            <td className="border-b border-border px-4 py-3">
+              <p className="max-w-xl break-words font-semibold">{post.content}</p>
+              <p className="mt-1 text-xs text-muted-foreground">{post.date} · {formatCan(post.price)}</p>
+              {post.audioUrl === null ? null : <div className="mt-3"><AdminAudioPlayer playerId={`community-row-${post.postId}`} src={post.audioUrl} title={`커뮤니티 게시글 ${post.postId}`} /></div>}
+            </td>
+            <td className="border-b border-border px-4 py-3 whitespace-nowrap">{formatCommunityPostStatus(post)}</td>
+            <td className="border-b border-border px-4 py-3">좋아요 {post.likeCount.toLocaleString("ko-KR")} · 댓글 {post.commentCount.toLocaleString("ko-KR")}</td>
+            <td className="border-b border-border px-4 py-3">
+              <button aria-label={`${post.content} 게시글 열기`} className="rounded-md border border-input bg-card px-3 py-2 font-semibold whitespace-nowrap hover:bg-accent" onClick={() => onOpen(post.postId)} type="button">
+                열기
+              </button>
+            </td>
+          </tr>
+        ))}
+      </tbody>
+    </table>
+  );
+  const mobile = <div className="grid gap-3 p-3">{data.items.map((post) => <CommunityPostListItem key={post.postId} onOpen={onOpen} post={post} />)}</div>;
+
+  return <ResponsiveResourceList ariaLabel="커뮤니티 게시글 목록" desktop={desktop} mobile={mobile} />;
+}
diff --git a/src/features/community-posts/components/CommunityPostListItem.tsx b/src/features/community-posts/components/CommunityPostListItem.tsx
new file mode 100644
index 0000000..865c586
--- /dev/null
+++ b/src/features/community-posts/components/CommunityPostListItem.tsx
@@ -0,0 +1,27 @@
+import type { CommunityPostListItem as CommunityPostListItemData } from "@/features/community-posts/model/types";
+import { formatCommunityPostStatus } from "@/features/community-posts/lib/community-post-display-labels";
+import { AdminAudioPlayer } from "@/shared/ui/admin-audio-player";
+
+function formatCan(price: number): string {
+  return `${price.toLocaleString("ko-KR")}캔`;
+}
+
+export function CommunityPostListItem({ onOpen, post }: { readonly onOpen: (postId: number) => void; readonly post: CommunityPostListItemData }) {
+  return (
+    <article className="flex flex-col gap-3 rounded-lg border border-border bg-card p-4">
+      <div className="flex items-start gap-3">
+        {post.imageUrl === null ? null : <img alt="" className="size-16 shrink-0 rounded-md object-cover" height="64" loading="lazy" src={post.imageUrl} width="64" />}
+        <div className="min-w-0 flex-1">
+          <p className="text-xs font-semibold text-info">{post.isFixed ? "고정 게시글" : "커뮤니티 게시글"}</p>
+          <p className="mt-1 line-clamp-3 break-words font-semibold">{post.content}</p>
+          <p className="mt-2 text-xs font-semibold text-info">{formatCommunityPostStatus(post)}</p>
+          <p className="mt-1 text-xs text-muted-foreground">{post.date} · 좋아요 {post.likeCount.toLocaleString("ko-KR")} · 댓글 {post.commentCount.toLocaleString("ko-KR")} · {formatCan(post.price)}</p>
+        </div>
+      </div>
+      {post.audioUrl === null ? null : <AdminAudioPlayer playerId={`community-list-${post.postId}`} src={post.audioUrl} title={`커뮤니티 게시글 ${post.postId}`} />}
+      <button aria-label={`${post.content} 게시글 열기`} className="min-h-11 rounded-md border border-input bg-card px-4 py-2 font-semibold whitespace-nowrap hover:bg-accent" onClick={() => onOpen(post.postId)} type="button">
+        열기
+      </button>
+    </article>
+  );
+}
diff --git a/src/features/community-posts/components/CommunityPostSheet.tsx b/src/features/community-posts/components/CommunityPostSheet.tsx
new file mode 100644
index 0000000..c63f7a3
--- /dev/null
+++ b/src/features/community-posts/components/CommunityPostSheet.tsx
@@ -0,0 +1,202 @@
+import { useEffect, useRef, useState } from "react";
+
+import { softDeleteCommunityPost, updateCommunityPost } from "@/features/community-posts/api/community-post-api";
+import { COMMUNITY_POST_IMAGE_POLICY, prepareCommunityPostImage } from "@/features/community-posts/validation/community-post-media-policy";
+import type { CommunityPostListItem } from "@/features/community-posts/model/types";
+import { CommentThread } from "@/features/comments/components/CommentThread";
+import { ApiError } from "@/shared/api/api-error";
+import type { ApiClient } from "@/shared/api/client";
+import type { CropRenderRequest } from "@/shared/lib/crop-image";
+import { AdminAudioPlayer } from "@/shared/ui/admin-audio-player";
+import { ConfirmDeactivateDialog } from "@/shared/ui/confirm-deactivate-dialog";
+import { FileField } from "@/shared/ui/file-field";
+import { ImageCropDialog } from "@/shared/ui/image-crop-dialog";
+import type { CropSourceImage } from "@/shared/ui/image-crop-dialog";
+import { useModalFocus } from "@/shared/ui/use-modal-focus";
+
+export function CommunityPostSheet({ apiClient, canMutate, canMutateComments = canMutate, characterId, createCropSource, onClose, onDeleted, onMutated, post, renderCrop }: { readonly apiClient: ApiClient; readonly canMutate: boolean; readonly canMutateComments?: boolean; readonly characterId: string; readonly createCropSource: (file: File) => Promise<CropSourceImage>; readonly onClose: () => void; readonly onDeleted: () => void; readonly onMutated: () => void; readonly post: CommunityPostListItem; readonly renderCrop?: (request: CropRenderRequest) => Promise<File> }) {
+  const [content, setContent] = useState(post.content);
+  const [cropSource, setCropSource] = useState<CropSourceImage | null>(null);
+  const [isAdult, setIsAdult] = useState(post.isAdult);
+  const [isCommentAvailable, setIsCommentAvailable] = useState(post.isCommentAvailable);
+  const [isDeleteDialogOpen, setIsDeleteDialogOpen] = useState(false);
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
+  const [imageErrorMessage, setImageErrorMessage] = useState<string | undefined>(undefined);
+  const [isImagePreparing, setIsImagePreparing] = useState(false);
+  const [isSaving, setIsSaving] = useState(false);
+  const [postImage, setPostImage] = useState<File | null>(null);
+  const isDeletingRef = useRef(false);
+  const isSavingRef = useRef(false);
+  const imageSelectionId = useRef(0);
+  const { dialogRef, trapFocus } = useModalFocus<HTMLDivElement>(true);
+  const isMutationDisabled = isSaving || isImagePreparing || cropSource !== null;
+
+  useEffect(() => () => cropSource?.release?.(), [cropSource]);
+
+  function getMutationErrorMessage(error: unknown): string {
+    return error instanceof ApiError ? error.message : "커뮤니티 게시글을 저장하지 못했습니다.";
+  }
+
+  async function savePost() {
+    if (isSavingRef.current || imageErrorMessage !== undefined || isImagePreparing || cropSource !== null) {
+      return;
+    }
+    isSavingRef.current = true;
+    setIsSaving(true);
+    setErrorMessage(null);
+    try {
+      await updateCommunityPost(apiClient, characterId, String(post.postId), { postImage: postImage ?? undefined, request: { content, isAdult, isCommentAvailable, isFixed: post.isFixed } });
+      onMutated();
+    } catch (error: unknown) {
+      setErrorMessage(getMutationErrorMessage(error));
+    } finally {
+      isSavingRef.current = false;
+      setIsSaving(false);
+    }
+  }
+
+  async function selectPostImage(file: File | null) {
+    imageSelectionId.current += 1;
+    const currentSelectionId = imageSelectionId.current;
+    setIsImagePreparing(true);
+    try {
+      const prepared = await prepareCommunityPostImage(file, createCropSource);
+      if (currentSelectionId !== imageSelectionId.current) {
+        if (prepared.kind === "crop") {
+          prepared.source.release?.();
+        }
+        return;
+      }
+      switch (prepared.kind) {
+        case "cleared":
+          setPostImage(null);
+          setCropSource(null);
+          setImageErrorMessage(undefined);
+          break;
+        case "crop":
+          setPostImage(null);
+          setCropSource(prepared.source);
+          setImageErrorMessage(undefined);
+          break;
+        case "error":
+          setPostImage(null);
+          setCropSource(null);
+          setImageErrorMessage(prepared.message);
+          break;
+        case "ready":
+          setPostImage(prepared.file);
+          setCropSource(null);
+          setImageErrorMessage(undefined);
+          break;
+      }
+    } catch (error: unknown) {
+      if (currentSelectionId !== imageSelectionId.current) {
+        return;
+      }
+      if (error instanceof Error) {
+        setImageErrorMessage("이미지 미리보기를 불러오지 못했습니다.");
+        return;
+      }
+      throw error;
+    } finally {
+      if (currentSelectionId === imageSelectionId.current) {
+        setIsImagePreparing(false);
+      }
+    }
+  }
+
+  async function toggleFixed() {
+    if (isSavingRef.current) {
+      return;
+    }
+    isSavingRef.current = true;
+    setIsSaving(true);
+    setErrorMessage(null);
+    try {
+      await updateCommunityPost(apiClient, characterId, String(post.postId), { request: { isFixed: !post.isFixed } });
+      onMutated();
+    } catch (error: unknown) {
+      setErrorMessage(getMutationErrorMessage(error));
+    } finally {
+      isSavingRef.current = false;
+      setIsSaving(false);
+    }
+  }
+
+  async function deletePost() {
+    if (isDeletingRef.current) {
+      return;
+    }
+
+    isDeletingRef.current = true;
+    setIsSaving(true);
+    setErrorMessage(null);
+    try {
+      await softDeleteCommunityPost(apiClient, characterId, String(post.postId));
+      onClose();
+      onDeleted();
+    } catch (error: unknown) {
+      setErrorMessage(getMutationErrorMessage(error));
+    } finally {
+      isDeletingRef.current = false;
+      setIsSaving(false);
+    }
+  }
+
+  function handleKeyDown(event: React.KeyboardEvent<HTMLDivElement>) {
+    if (event.key === "Escape") {
+      onClose();
+      return;
+    }
+
+    trapFocus(event);
+  }
+
+  return (
+    <div className="fixed inset-0 z-modal flex justify-end bg-background/80 p-4">
+      <div aria-label="커뮤니티 게시글" aria-modal="true" className="flex min-h-0 w-full max-w-xl flex-col gap-4 overflow-auto rounded-lg border border-border bg-card p-4" onKeyDown={handleKeyDown} ref={dialogRef} role="dialog">
+        <div className="flex items-start justify-between gap-3">
+          <div>
+            <p className="text-xs font-semibold text-info">COMMUNITY</p>
+            <h2 className="text-xl font-semibold">커뮤니티 게시글</h2>
+          </div>
+          <button className="rounded-md border border-input bg-card px-3 py-2 font-semibold hover:bg-accent" onClick={onClose} type="button">닫기</button>
+        </div>
+        {post.imageUrl === null ? null : <img alt="게시글 이미지" className="max-h-72 rounded-lg object-cover" src={post.imageUrl} />}
+        {canMutate ? <FileField accept="image/jpeg,image/png,image/gif" acceptDescription="JPEG 또는 PNG는 자유 ratio crop 후 최대 800px로 전송합니다. GIF는 원본 width 800px 이하만 crop 없이 전송합니다." error={imageErrorMessage} label="게시글 이미지" onChange={(file) => void selectPostImage(file)} value={postImage} /> : null}
+        {canMutate ? (
+          <>
+            <label className="flex flex-col gap-2 text-sm font-semibold">
+              내용
+              <textarea className="min-h-32 rounded-md border border-input bg-card px-3 py-2 text-base font-normal text-foreground" onChange={(event) => setContent(event.currentTarget.value)} value={content} />
+            </label>
+            <label className="flex items-center gap-2 text-sm font-semibold">
+              <input checked={isCommentAvailable} onChange={(event) => setIsCommentAvailable(event.currentTarget.checked)} type="checkbox" />
+              댓글 허용
+            </label>
+            <label className="flex items-center gap-2 text-sm font-semibold">
+              <input checked={isAdult} onChange={(event) => setIsAdult(event.currentTarget.checked)} type="checkbox" />
+              성인 콘텐츠
+            </label>
+          </>
+        ) : <p className="rounded-lg border border-border bg-muted p-3 text-sm font-semibold">{post.content}</p>}
+        {post.audioUrl === null ? null : <AdminAudioPlayer playerId={`community-sheet-${post.postId}`} src={post.audioUrl} title={`커뮤니티 게시글 ${post.postId}`} />}
+        {cropSource === null ? null : <ImageCropDialog image={cropSource} onApply={(file) => { setPostImage(file); setCropSource(null); }} onCancel={() => setCropSource(null)} open policy={COMMUNITY_POST_IMAGE_POLICY} renderCrop={renderCrop} />}
+        {errorMessage === null ? null : <p className="rounded-md border border-destructive bg-card p-3 text-sm font-semibold text-destructive" role="alert">{errorMessage}</p>}
+        {isSaving ? <p className="rounded-md border border-border bg-muted p-3 text-sm font-semibold" role="status">커뮤니티 게시글을 저장하는 중</p> : null}
+        <dl className="grid gap-2 rounded-lg border border-border bg-muted p-3 text-sm sm:grid-cols-2">
+          <div><dt className="font-semibold text-muted-foreground">작성일</dt><dd>{post.date}</dd></div>
+          <div><dt className="font-semibold text-muted-foreground">반응</dt><dd>좋아요 {post.likeCount.toLocaleString("ko-KR")} · 댓글 {post.commentCount.toLocaleString("ko-KR")}</dd></div>
+        </dl>
+        {post.firstComment === null ? null : <p className="rounded-lg border border-border bg-card p-3 text-sm">첫 댓글: {post.firstComment.comment}</p>}
+        {post.isCommentAvailable ? <CommentThread apiClient={apiClient} canMutate={canMutateComments} target={{ kind: "community", characterId, postId: String(post.postId), creatorId: post.creatorId }} /> : null}
+        {canMutate ? <div className="flex flex-wrap gap-2">
+          <button className="rounded-md border border-input bg-primary px-4 py-2 font-semibold text-primary-foreground hover:bg-[var(--button-bg-hover)] active:bg-[var(--button-bg-active)] disabled:opacity-60" disabled={isMutationDisabled} onClick={() => void savePost()} type="button">수정 저장</button>
+          <button className="rounded-md border border-input bg-card px-4 py-2 font-semibold hover:bg-accent disabled:opacity-60" disabled={isMutationDisabled} onClick={() => void toggleFixed()} type="button">{post.isFixed ? "고정 해제" : "고정하기"}</button>
+          <button className="rounded-md border border-destructive bg-card px-4 py-2 font-semibold text-destructive hover:bg-accent disabled:opacity-60" disabled={isMutationDisabled} onClick={() => setIsDeleteDialogOpen(true)} type="button">비활성화</button>
+        </div> : null}
+      </div>
+      <ConfirmDeactivateDialog confirmLabel="비활성화 확인" errorMessage={errorMessage ?? undefined} impactDescription="게시글을 목록에서 제외합니다. 연결된 댓글은 삭제하지 않습니다." isPending={isSaving} onCancel={() => setIsDeleteDialogOpen(false)} onConfirm={() => void deletePost()} open={isDeleteDialogOpen} targetName="커뮤니티 게시글" />
+    </div>
+  );
+}
diff --git a/src/features/community-posts/components/community-post-form-helpers.ts b/src/features/community-posts/components/community-post-form-helpers.ts
new file mode 100644
index 0000000..a5c5885
--- /dev/null
+++ b/src/features/community-posts/components/community-post-form-helpers.ts
@@ -0,0 +1,40 @@
+import { validateAudioFile } from "@/shared/validation/audio-file-policy";
+import { formatCanPriceInput, parseCanPriceInput } from "@/shared/validation/can-price";
+
+export type CommunityPostFormErrors = {
+  readonly audio?: string;
+  readonly content?: string;
+  readonly form?: string;
+  readonly image?: string;
+  readonly price?: string;
+};
+
+export function parseCommunityPostPrice(value: string): number | null {
+  return parseCanPriceInput(value);
+}
+
+export function formatCommunityPostPrice(value: string): string {
+  return formatCanPriceInput(value);
+}
+
+export function communityPostAudioErrorMessage(file: File | null): string | undefined {
+  if (file === null) {
+    return undefined;
+  }
+  const result = validateAudioFile(file);
+  if (result.ok) {
+    return undefined;
+  }
+  if (result.reason === "size") {
+    return "오디오 파일은 1,024,000,000 bytes 이하만 업로드할 수 있습니다.";
+  }
+  if (result.reason === "mimeExtensionCombination") {
+    return "확장자와 MIME 조합이 올바른 MP3, AAC, M4A 파일만 업로드하세요.";
+  }
+
+  return "MP3, AAC, M4A 파일만 업로드하세요.";
+}
+
+export function hasCommunityPostFormErrors(errors: CommunityPostFormErrors): boolean {
+  return Object.values(errors).some((error) => error !== undefined);
+}
diff --git a/src/features/community-posts/lib/community-post-display-labels.ts b/src/features/community-posts/lib/community-post-display-labels.ts
new file mode 100644
index 0000000..b53ab18
--- /dev/null
+++ b/src/features/community-posts/lib/community-post-display-labels.ts
@@ -0,0 +1,11 @@
+import type { CommunityPostListItem } from "@/features/community-posts/model/types";
+
+type CommunityPostStatus = Pick<CommunityPostListItem, "isAdult" | "isCommentAvailable" | "isFixed">;
+
+export function formatCommunityPostStatus(post: CommunityPostStatus): string {
+  const fixedLabel = post.isFixed ? "고정" : "일반";
+  const commentLabel = post.isCommentAvailable ? "댓글 허용" : "댓글 차단";
+  const adultLabel = post.isAdult ? "성인 콘텐츠" : "일반 콘텐츠";
+
+  return `${fixedLabel} · ${commentLabel} · ${adultLabel}`;
+}
diff --git a/src/features/community-posts/lib/create-community-post-crop-source.ts b/src/features/community-posts/lib/create-community-post-crop-source.ts
new file mode 100644
index 0000000..02389a8
--- /dev/null
+++ b/src/features/community-posts/lib/create-community-post-crop-source.ts
@@ -0,0 +1,3 @@
+import { createImageCropSource } from "@/shared/lib/create-image-crop-source";
+
+export const createCommunityPostCropSource = createImageCropSource;
diff --git a/src/features/community-posts/lib/use-community-management-capability.ts b/src/features/community-posts/lib/use-community-management-capability.ts
new file mode 100644
index 0000000..a10dc9b
--- /dev/null
+++ b/src/features/community-posts/lib/use-community-management-capability.ts
@@ -0,0 +1,26 @@
+import { useEffect, useState } from "react";
+
+const communityManagementQuery = "(min-width: 768px)";
+
+function getCanManageCommunity(): boolean {
+  return typeof window === "undefined" || typeof window.matchMedia !== "function" || window.matchMedia(communityManagementQuery).matches;
+}
+
+export function useCommunityManagementCapability(): boolean {
+  const [canManageCommunity, setCanManageCommunity] = useState(getCanManageCommunity);
+
+  useEffect(() => {
+    if (typeof window.matchMedia !== "function") {
+      return undefined;
+    }
+
+    const mediaQuery = window.matchMedia(communityManagementQuery);
+    const updateCanManageCommunity = () => setCanManageCommunity(mediaQuery.matches);
+    updateCanManageCommunity();
+    mediaQuery.addEventListener("change", updateCanManageCommunity);
+
+    return () => mediaQuery.removeEventListener("change", updateCanManageCommunity);
+  }, []);
+
+  return canManageCommunity;
+}
diff --git a/src/features/community-posts/model/types.ts b/src/features/community-posts/model/types.ts
new file mode 100644
index 0000000..420e87e
--- /dev/null
+++ b/src/features/community-posts/model/types.ts
@@ -0,0 +1,66 @@
+import { z } from "zod";
+
+import { canPriceSchema } from "@/shared/validation/can-price";
+
+const nullableString = z.string().nullable();
+
+export const communityPostCommentSchema = z.object({
+  id: z.number().int(),
+  writerId: z.number().int(),
+  nickname: z.string(),
+  profileUrl: z.string(),
+  comment: z.string(),
+  isSecret: z.boolean(),
+  date: z.string(),
+  replyCount: z.number().int(),
+});
+
+export const communityPostListItemSchema = z.object({
+  postId: z.number().int(),
+  creatorId: z.number().int(),
+  creatorNickname: z.string(),
+  creatorProfileUrl: z.string(),
+  imageUrl: nullableString,
+  audioUrl: nullableString,
+  content: z.string(),
+  price: z.number().int().nonnegative(),
+  date: z.string(),
+  dateUtc: z.string(),
+  isCommentAvailable: z.boolean(),
+  isAdult: z.boolean(),
+  isFixed: z.boolean(),
+  isLike: z.boolean(),
+  existOrdered: z.boolean(),
+  likeCount: z.number().int(),
+  commentCount: z.number().int(),
+  firstComment: communityPostCommentSchema.nullable(),
+});
+
+export const communityPostListResponseSchema = z.object({
+  totalCount: z.number().int(),
+  page: z.number().int(),
+  size: z.number().int(),
+  hasNext: z.boolean(),
+  items: z.array(communityPostListItemSchema),
+});
+
+export const communityPostCreateRequestSchema = z.strictObject({
+  content: z.string().min(1),
+  isCommentAvailable: z.boolean(),
+  isAdult: z.boolean(),
+  price: canPriceSchema.optional(),
+});
+
+export const communityPostUpdateRequestSchema = z.strictObject({
+  content: nullableString.optional(),
+  isCommentAvailable: z.boolean().nullable().optional(),
+  isAdult: z.boolean().nullable().optional(),
+  isActive: z.literal(false).optional(),
+  isFixed: z.boolean().optional(),
+});
+
+export type CommunityPostComment = z.infer<typeof communityPostCommentSchema>;
+export type CommunityPostCreateRequest = z.infer<typeof communityPostCreateRequestSchema>;
+export type CommunityPostListItem = z.infer<typeof communityPostListItemSchema>;
+export type CommunityPostUpdateRequest = z.infer<typeof communityPostUpdateRequestSchema>;
+export type CommunityPostListData = z.infer<typeof communityPostListResponseSchema>;
diff --git a/src/features/community-posts/pages/CommunityPostFormPage.tsx b/src/features/community-posts/pages/CommunityPostFormPage.tsx
new file mode 100644
index 0000000..27532df
--- /dev/null
+++ b/src/features/community-posts/pages/CommunityPostFormPage.tsx
@@ -0,0 +1,62 @@
+import { useEffect, useState } from "react";
+
+import { navigateTo } from "@/app/browser-location";
+import { routePaths } from "@/app/route-paths";
+import { CommunityPostForm } from "@/features/community-posts/components/CommunityPostForm";
+import { createCommunityPostCropSource } from "@/features/community-posts/lib/create-community-post-crop-source";
+import { useCommunityManagementCapability } from "@/features/community-posts/lib/use-community-management-capability";
+import { getCharacter } from "@/features/characters/api/character-api";
+import type { CharacterDetail } from "@/features/characters/model/types";
+import { CharacterWorkspaceLayout } from "@/layouts/CharacterWorkspaceLayout";
+import { ApiError } from "@/shared/api/api-error";
+import type { ApiClient } from "@/shared/api/client";
+import type { CropRenderRequest } from "@/shared/lib/crop-image";
+import type { CropSourceImage } from "@/shared/ui/image-crop-dialog";
+import { PageState } from "@/shared/ui/page-state";
+
+type FormState =
+  | { readonly requestKey: string; readonly status: "loading" }
+  | { readonly character: CharacterDetail; readonly requestKey: string; readonly status: "content" }
+  | { readonly message: string; readonly requestKey: string; readonly status: "error" };
+
+export function CommunityPostFormPage({ apiClient, characterId, createCropSource = createCommunityPostCropSource, renderCrop }: { readonly apiClient: ApiClient; readonly characterId: string; readonly createCropSource?: (file: File) => Promise<CropSourceImage>; readonly renderCrop?: (request: CropRenderRequest) => Promise<File> }) {
+  const canManageCommunity = useCommunityManagementCapability();
+  const [state, setState] = useState<FormState>({ requestKey: "", status: "loading" });
+  const [retryKey, setRetryKey] = useState(0);
+  const requestKey = `${characterId}:community-new:${retryKey}`;
+
+  useEffect(() => {
+    let isCurrent = true;
+    void getCharacter(apiClient, characterId)
+      .then((character) => {
+        if (isCurrent) {
+          setState({ character, requestKey, status: "content" });
+        }
+      })
+      .catch((error: unknown) => {
+        if (isCurrent) {
+          setState({ message: error instanceof ApiError ? error.message : "커뮤니티 게시글 입력 화면 정보를 불러오지 못했습니다.", requestKey, status: "error" });
+        }
+      });
+
+    return () => {
+      isCurrent = false;
+    };
+  }, [apiClient, characterId, requestKey]);
+
+  const visibleState: FormState = state.requestKey === requestKey ? state : { requestKey, status: "loading" };
+  if (visibleState.status === "loading") {
+    return <PageState state="loading" title="커뮤니티 게시글 입력 화면을 불러오는 중" />;
+  }
+  if (visibleState.status === "error") {
+    return <PageState description={visibleState.message} onRetry={() => setRetryKey((key) => key + 1)} state="error" title="커뮤니티 게시글 입력 화면 조회 실패" />;
+  }
+
+  return (
+    <CharacterWorkspaceLayout activeTab="community" character={visibleState.character}>
+      {!canManageCommunity ? <PageState description="커뮤니티 게시글 생성은 태블릿 이상 화면에서 진행해 주세요." state="empty" title="모바일에서는 커뮤니티 게시글 생성을 제한합니다" /> : null}
+      {canManageCommunity && visibleState.character.isActive ? <CommunityPostForm apiClient={apiClient} characterId={characterId} createCropSource={createCropSource} onCreated={() => navigateTo(routePaths.aiCharacterCommunityPosts(characterId), { successNotification: "커뮤니티 게시글을 생성했습니다." })} renderCrop={renderCrop} /> : null}
+      {canManageCommunity && !visibleState.character.isActive ? <PageState description="비활성 캐릭터에서는 커뮤니티 게시글을 생성할 수 없습니다." state="empty" title="커뮤니티 게시글 생성 차단" /> : null}
+    </CharacterWorkspaceLayout>
+  );
+}
diff --git a/src/features/community-posts/pages/CommunityPostListPage.tsx b/src/features/community-posts/pages/CommunityPostListPage.tsx
new file mode 100644
index 0000000..0b47b7c
--- /dev/null
+++ b/src/features/community-posts/pages/CommunityPostListPage.tsx
@@ -0,0 +1,118 @@
+import { useCallback, useEffect, useState } from "react";
+
+import { navigateTo, useBrowserLocation } from "@/app/browser-location";
+import { routePaths } from "@/app/route-paths";
+import { getCharacter } from "@/features/characters/api/character-api";
+import type { CharacterDetail } from "@/features/characters/model/types";
+import { getCommunityPosts } from "@/features/community-posts/api/community-post-api";
+import { CommunityPostList } from "@/features/community-posts/components/CommunityPostList";
+import { CommunityPostSheet } from "@/features/community-posts/components/CommunityPostSheet";
+import { createCommunityPostCropSource } from "@/features/community-posts/lib/create-community-post-crop-source";
+import { useCommunityManagementCapability } from "@/features/community-posts/lib/use-community-management-capability";
+import type { CommunityPostListData } from "@/features/community-posts/model/types";
+import { CharacterWorkspaceLayout } from "@/layouts/CharacterWorkspaceLayout";
+import { ApiError } from "@/shared/api/api-error";
+import type { ApiClient } from "@/shared/api/client";
+import { AudioPlaybackProvider } from "@/shared/ui/audio-playback-provider";
+import { PageState } from "@/shared/ui/page-state";
+import { ResourcePagination } from "@/shared/ui/resource-pagination";
+
+type ListQuery = { readonly page: number; readonly size: number };
+type ListState =
+  | { readonly requestKey: string; readonly status: "loading" }
+  | { readonly character: CharacterDetail; readonly data: CommunityPostListData; readonly requestKey: string; readonly status: "content" }
+  | { readonly message: string; readonly requestKey: string; readonly status: "error" };
+
+function getListQuery(): ListQuery {
+  const query = new URLSearchParams(window.location.search);
+  const page = Number(query.get("page") ?? "0");
+  const size = Number(query.get("size") ?? "20");
+
+  return {
+    page: Number.isFinite(page) ? Math.max(0, Math.trunc(page)) : 0,
+    size: Number.isFinite(size) ? Math.max(1, Math.trunc(size)) : 20,
+  };
+}
+
+function navigateList(characterId: string, query: ListQuery): void {
+  const nextQuery = new URLSearchParams({ page: String(query.page), size: String(query.size) });
+  navigateTo(`${routePaths.aiCharacterCommunityPosts(characterId)}?${nextQuery.toString()}`);
+}
+
+export function CommunityPostListPage({ apiClient, characterId }: { readonly apiClient: ApiClient; readonly characterId: string }) {
+  const canManageCommunity = useCommunityManagementCapability();
+  const location = useBrowserLocation();
+  const query = getListQuery();
+  const [state, setState] = useState<ListState>({ requestKey: "", status: "loading" });
+  const [retryKey, setRetryKey] = useState(0);
+  const [selectedPostId, setSelectedPostId] = useState<number | null>(null);
+  const requestKey = `${location.visitKey}:${characterId}:${query.page}:${query.size}:${retryKey}`;
+
+  useEffect(() => {
+    let isCurrent = true;
+    void Promise.all([
+      getCharacter(apiClient, characterId),
+      getCommunityPosts(apiClient, { characterId, page: query.page, size: query.size }),
+    ])
+      .then(([character, data]) => {
+        if (isCurrent) {
+          setState({ character, data, requestKey, status: "content" });
+        }
+      })
+      .catch((error: unknown) => {
+        if (isCurrent) {
+          setState({ message: error instanceof ApiError ? error.message : "커뮤니티 목록을 불러오지 못했습니다.", requestKey, status: "error" });
+        }
+      });
+
+    return () => {
+      isCurrent = false;
+    };
+  }, [apiClient, characterId, query.page, query.size, requestKey]);
+
+  const visibleState: ListState = state.requestKey === requestKey ? state : { requestKey, status: "loading" };
+  const onPageChange = useCallback((page: number) => navigateList(characterId, { page, size: query.size }), [characterId, query.size]);
+  const onSizeChange = useCallback((size: number) => navigateList(characterId, { page: 0, size }), [characterId]);
+
+  if (visibleState.status === "loading") {
+    return <PageState state="loading" title="커뮤니티 게시글 목록을 불러오는 중" />;
+  }
+  if (visibleState.status === "error") {
+    return <PageState description={visibleState.message} onRetry={() => setRetryKey((key) => key + 1)} state="error" title="커뮤니티 목록 조회 실패" />;
+  }
+
+  const selectedPost = visibleState.data.items.find((post) => post.postId === selectedPostId) ?? null;
+
+  return (
+    <CharacterWorkspaceLayout activeTab="community" character={visibleState.character}>
+      <AudioPlaybackProvider>
+        <section className="flex flex-col gap-4" aria-labelledby="community-post-list-title">
+          <div className="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between">
+            <div className="flex flex-col gap-2">
+              <p className="text-xs font-semibold text-info">COMMUNITY</p>
+              <h2 className="text-2xl font-bold leading-tight" id="community-post-list-title">커뮤니티 게시글</h2>
+              <p className="text-sm text-muted-foreground">목록 응답으로 게시글을 열고 수정, 고정, 비활성화를 처리합니다.</p>
+            </div>
+            {visibleState.character.isActive && canManageCommunity ? <a className="w-fit rounded-md border border-input bg-primary px-4 py-2 font-semibold text-primary-foreground hover:bg-[var(--button-bg-hover)] active:bg-[var(--button-bg-active)]" href={routePaths.aiCharacterCommunityPostCreate(characterId)} onClick={(event) => { event.preventDefault(); navigateTo(routePaths.aiCharacterCommunityPostCreate(characterId)); }}>커뮤니티 게시글 생성</a> : null}
+          </div>
+          {visibleState.data.items.length === 0 ? <PageState description="현재 캐릭터에 연결된 커뮤니티 게시글이 없습니다." state="empty" title="등록된 커뮤니티 게시글이 없습니다." /> : null}
+          {visibleState.data.items.length > 0 ? <CommunityPostList data={visibleState.data} onOpen={setSelectedPostId} /> : null}
+          <ResourcePagination data={visibleState.data} onPageChange={onPageChange} onSizeChange={onSizeChange} />
+        </section>
+        {selectedPost === null ? null : (
+          <CommunityPostSheet
+            apiClient={apiClient}
+            characterId={characterId}
+            createCropSource={createCommunityPostCropSource}
+            onClose={() => setSelectedPostId(null)}
+            onDeleted={() => navigateTo(`${routePaths.aiCharacterCommunityPosts(characterId)}?page=${query.page}&size=${query.size}`, { successNotification: "커뮤니티 게시글을 비활성화했습니다." })}
+            onMutated={() => setRetryKey((key) => key + 1)}
+            post={selectedPost}
+            canMutate={visibleState.character.isActive && canManageCommunity}
+            canMutateComments={visibleState.character.isActive}
+          />
+        )}
+      </AudioPlaybackProvider>
+    </CharacterWorkspaceLayout>
+  );
+}
diff --git a/src/features/community-posts/tests/community-contract.test.ts b/src/features/community-posts/tests/community-contract.test.ts
new file mode 100644
index 0000000..4ac32d4
--- /dev/null
+++ b/src/features/community-posts/tests/community-contract.test.ts
@@ -0,0 +1,259 @@
+import { z } from "zod";
+import { describe, expect, test } from "vitest";
+
+import { createCommunityPost, getCommunityPosts, softDeleteCommunityPost, updateCommunityPost } from "@/features/community-posts/api/community-post-api";
+import { communityPostCreateRequestSchema, communityPostListResponseSchema, communityPostUpdateRequestSchema } from "@/features/community-posts/model/types";
+import { createApiResponseSchema } from "@/shared/api/types";
+import { previewCommunityPostAudioUrl } from "@/shared/mocks/community-post-fixtures";
+import { createMockHandlers, createMockStore } from "@/shared/mocks/handlers";
+import { server } from "@/shared/test/server";
+import { authorizedFetch, contractCommunityPost as communityPost, createCapturingClient, filePart, multipartInit, multipartRawInit, readJsonPart, requestPart, requireData, requireFormData, textPart } from "./community-test-support";
+import type { CapturedApiRequest } from "./community-test-support";
+
+const apiBaseUrl = "https://api.example.com";
+
+describe("Community post contract", () => {
+  test("list sends page size only and consumes pagination object data", async () => {
+    // Given
+    const requests: CapturedApiRequest[] = [];
+    const client = createCapturingClient(requests);
+
+    // When
+    const list = await getCommunityPosts(client, { characterId: "101", page: 2, size: 50 });
+
+    // Then
+    expect(list).toEqual({ totalCount: 51, page: 2, size: 50, hasNext: true, items: [communityPost] });
+    expect(requests).toEqual([{ path: "/api/v2/admin/ai-characters/101/community-posts?page=2&size=50", method: undefined, body: undefined }]);
+    const url = new URL(requests[0]?.path ?? "", apiBaseUrl);
+    expect([...url.searchParams.keys()]).toEqual(["page", "size"]);
+    expect(url.searchParams.has("timezone")).toBe(false);
+    expect(communityPostListResponseSchema.parse({ totalCount: 1, page: 2, size: 50, hasNext: true, items: [communityPost] }).items[0]).not.toHaveProperty("fixedAtUtc");
+  });
+
+  test("update and soft delete use multipart request and null success", async () => {
+    // Given
+    const requests: CapturedApiRequest[] = [];
+    const client = createCapturingClient(requests);
+
+    // When
+    const postImage = new File(["image"], "post.png", { type: "image/png" });
+    await updateCommunityPost(client, "101", "7001", { postImage, request: { content: "수정", isAdult: true, isCommentAvailable: false, isFixed: true } });
+    await softDeleteCommunityPost(client, "101", "7001");
+
+    // Then
+    expect(requests.map((request) => ({ path: request.path, method: request.method }))).toEqual([
+      { path: "/api/v2/admin/ai-characters/101/community-posts/7001", method: "PUT" },
+      { path: "/api/v2/admin/ai-characters/101/community-posts/7001", method: "PUT" },
+    ]);
+    const updateBody = requireFormData(requests[0]?.body);
+    expect(updateBody.get("postImage")).toBe(postImage);
+    expect(updateBody.has("audioFile")).toBe(false);
+    expect(await readJsonPart(updateBody.get("request"))).toEqual({ content: "수정", isAdult: true, isCommentAvailable: false, isFixed: true });
+    expect(await readJsonPart(updateBody.get("request"))).not.toHaveProperty("price");
+    const deleteRequest = await readJsonPart(requireFormData(requests[1]?.body).get("request"));
+    expect(deleteRequest).toEqual({ isActive: false, isFixed: false });
+    expect(deleteRequest).not.toEqual(expect.objectContaining({ isActive: true }));
+  });
+
+  test("create sends optional media and request without active or fixed flags", async () => {
+    // Given
+    const requests: CapturedApiRequest[] = [];
+    const client = createCapturingClient(requests);
+    const audioFile = new File(["audio"], "voice.m4a", { type: "audio/x-m4a" });
+    const postImage = new File(["image"], "post.gif", { type: "image/gif" });
+
+    // When
+    await createCommunityPost(client, "101", { audioFile, postImage, request: { content: "새 커뮤니티 게시글", isAdult: false, isCommentAvailable: true, price: 1200 } });
+
+    // Then
+    expect(requests).toEqual([{ path: "/api/v2/admin/ai-characters/101/community-posts", method: "POST", body: requests[0]?.body }]);
+    const body = requireFormData(requests[0]?.body);
+    expect(body.get("audioFile")).toBe(audioFile);
+    expect(body.get("postImage")).toBe(postImage);
+    const request = await readJsonPart(body.get("request"));
+    expect(request).toEqual({ content: "새 커뮤니티 게시글", isAdult: false, isCommentAvailable: true, price: 1200 });
+    expect(request).not.toHaveProperty("isActive");
+    expect(request).not.toHaveProperty("isFixed");
+    expect(() => communityPostCreateRequestSchema.parse({ content: "새 커뮤니티 게시글", isAdult: false, isCommentAvailable: true })).not.toThrow();
+  });
+
+  test("schema rejects negative price and isActive true", () => {
+    expect(() => communityPostListResponseSchema.parse({ totalCount: 1, page: 0, size: 20, hasNext: false, items: [{ ...communityPost, price: -1 }] })).toThrow();
+    expect(() => communityPostUpdateRequestSchema.parse({ isActive: true })).toThrow();
+  });
+
+  test.each([undefined, 0, 99_999])("create schema accepts optional CAN price boundary %s", (price) => {
+    const request = price === undefined ? { content: "가격", isAdult: false, isCommentAvailable: true } : { content: "가격", isAdult: false, isCommentAvailable: true, price };
+
+    expect(() => communityPostCreateRequestSchema.parse(request)).not.toThrow();
+  });
+
+  test.each([-1, 100_000, 1.5])("create schema rejects invalid CAN price %i", (price) => {
+    expect(() => communityPostCreateRequestSchema.parse({ content: "가격", isAdult: false, isCommentAvailable: true, price })).toThrow();
+  });
+
+  test("mock handlers update community posts through the list store without detail", async () => {
+    // Given
+    server.use(...createMockHandlers(createMockStore(), apiBaseUrl));
+
+    // When
+    const firstListResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts?page=0&size=20");
+    const firstList = requireData(createApiResponseSchema(communityPostListResponseSchema).parse(await firstListResponse.json()).data);
+    const firstPost = firstList.items[0];
+    if (firstPost === undefined) {
+      throw new Error("expected community post fixture");
+    }
+    const pinResponse = await authorizedFetch(`/api/v2/admin/ai-characters/101/community-posts/${firstPost.postId}`, multipartInit("PUT", { isFixed: true }));
+    const pinnedListResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts?page=0&size=20");
+    const deleteResponse = await authorizedFetch(`/api/v2/admin/ai-characters/101/community-posts/${firstPost.postId}`, multipartInit("PUT", { isActive: false, isFixed: false }));
+    const finalListResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts?page=0&size=20");
+
+    // Then
+    expect(createApiResponseSchema(z.null()).parse(await pinResponse.json()).data).toBeNull();
+    expect(createApiResponseSchema(z.null()).parse(await deleteResponse.json()).data).toBeNull();
+    expect(await pinnedListResponse.json()).toMatchObject({ success: true, data: { items: expect.arrayContaining([expect.objectContaining({ postId: firstPost.postId, isFixed: true })]) } });
+    expect(await finalListResponse.json()).toMatchObject({ success: true, data: { items: expect.not.arrayContaining([expect.objectContaining({ postId: firstPost.postId })]) } });
+  });
+
+  test("mock handlers create community posts through multipart only", async () => {
+    // Given
+    server.use(...createMockHandlers(createMockStore(), apiBaseUrl));
+    // When
+    const createdResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", multipartInit("POST", { content: "mock 생성 게시글", isAdult: false, isCommentAvailable: true, price: 99 }, ["audioFile", "postImage"]));
+    const listResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts?page=0&size=20");
+    const invalidResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", multipartInit("POST", { content: "bad", isAdult: false, isCommentAvailable: true, isFixed: false }));
+
+    // Then
+    expect(createApiResponseSchema(z.null()).parse(await createdResponse.json()).data).toBeNull();
+    expect(invalidResponse.status).toBe(400);
+    expect(await listResponse.json()).toMatchObject({
+      success: true,
+      data: { items: expect.arrayContaining([
+        expect.objectContaining({ audioUrl: expect.stringMatching(/^data:audio\//), content: "mock 생성 게시글", imageUrl: expect.stringMatching(/^data:image\//), price: 99 }),
+      ]) },
+    });
+  });
+
+  test("mock handlers scope community posts to the requested character", async () => {
+    // Given
+    server.use(...createMockHandlers(createMockStore(), apiBaseUrl));
+
+    // When
+    const firstCharacterListResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts?page=0&size=20");
+    const secondCharacterListResponse = await authorizedFetch("/api/v2/admin/ai-characters/102/community-posts?page=0&size=20");
+    const createSecondCharacterResponse = await authorizedFetch("/api/v2/admin/ai-characters/102/community-posts", multipartInit("POST", { content: "테오 전용 게시글", isAdult: false, isCommentAvailable: true }));
+    const secondCharacterAfterCreateResponse = await authorizedFetch("/api/v2/admin/ai-characters/102/community-posts?page=0&size=20");
+
+    // Then
+    const firstCharacterList = requireData(createApiResponseSchema(communityPostListResponseSchema).parse(await firstCharacterListResponse.json()).data);
+    const secondCharacterList = requireData(createApiResponseSchema(communityPostListResponseSchema).parse(await secondCharacterListResponse.json()).data);
+    const secondCharacterAfterCreate = requireData(createApiResponseSchema(communityPostListResponseSchema).parse(await secondCharacterAfterCreateResponse.json()).data);
+    expect(firstCharacterList.items).toEqual(expect.arrayContaining([expect.objectContaining({ creatorId: 101 })]));
+    expect(secondCharacterList.items).toEqual([]);
+    expect(createApiResponseSchema(z.null()).parse(await createSecondCharacterResponse.json()).data).toBeNull();
+    expect(secondCharacterAfterCreate.items).toEqual([expect.objectContaining({ content: "테오 전용 게시글", creatorId: 102 })]);
+  });
+
+  test("mock handlers reject unsupported or duplicate community multipart parts", async () => {
+    // Given
+    server.use(...createMockHandlers(createMockStore(), apiBaseUrl));
+    const createRequest = { content: "strict", isAdult: false, isCommentAvailable: true };
+
+    // When
+    const duplicateRequestResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", multipartRawInit("POST", [requestPart(createRequest), requestPart(createRequest)]));
+    const duplicateImageResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", multipartRawInit("POST", [filePart("postImage"), filePart("postImage"), requestPart(createRequest)]));
+    const unknownCreatePartResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", multipartRawInit("POST", [filePart("thumbnail"), requestPart(createRequest)]));
+    const updateAudioResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts/7001", multipartRawInit("PUT", [filePart("audioFile"), requestPart({ isFixed: true })]));
+
+    // Then
+    expect(duplicateRequestResponse.status).toBe(400);
+    expect(duplicateImageResponse.status).toBe(400);
+    expect(unknownCreatePartResponse.status).toBe(400);
+    expect(updateAudioResponse.status).toBe(400);
+  });
+
+  test("mock handlers reject non-multipart bodies and text upload fields", async () => {
+    // Given
+    server.use(...createMockHandlers(createMockStore(), apiBaseUrl));
+    const createRequest = { content: "strict", isAdult: false, isCommentAvailable: true };
+
+    // When
+    const rawTextResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", {
+      body: multipartInit("POST", createRequest).body,
+      headers: { "Content-Type": "text/plain" },
+      method: "POST",
+    });
+    const textImageCreateResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", multipartRawInit("POST", [textPart("postImage"), requestPart(createRequest)]));
+    const textAudioCreateResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", multipartRawInit("POST", [textPart("audioFile"), requestPart(createRequest)]));
+    const textImageUpdateResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts/7001", multipartRawInit("PUT", [textPart("postImage"), requestPart({ isFixed: true })]));
+
+    // Then
+    expect(rawTextResponse.status).toBe(400);
+    expect(textImageCreateResponse.status).toBe(400);
+    expect(textAudioCreateResponse.status).toBe(400);
+    expect(textImageUpdateResponse.status).toBe(400);
+  });
+
+  test("mock handlers reject raw multipart when declared boundary differs from the body boundary", async () => {
+    // Given
+    server.use(...createMockHandlers(createMockStore(), apiBaseUrl));
+    const createRequest = { content: "boundary mismatch", isAdult: false, isCommentAvailable: true };
+
+    // When
+    const response = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", {
+      body: `--body-boundary\r\n${requestPart(createRequest)}\r\n--body-boundary--\r\n`,
+      headers: { "Content-Type": "multipart/form-data; boundary=declared-boundary" },
+      method: "POST",
+    });
+
+    // Then
+    expect(response.status).toBe(400);
+  });
+
+  test("mock handlers reject raw multipart without closing boundary or with trailing data", async () => {
+    // Given
+    server.use(...createMockHandlers(createMockStore(), apiBaseUrl));
+    const createRequest = { content: "strict boundary", isAdult: false, isCommentAvailable: true };
+
+    // When
+    const missingCloseResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", {
+      body: `--test-boundary\r\n${requestPart(createRequest)}\r\n`,
+      headers: { "Content-Type": "multipart/form-data; boundary=test-boundary" },
+      method: "POST",
+    });
+    const trailingDataResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts", {
+      body: `--test-boundary\r\n${requestPart(createRequest)}\r\n--test-boundary--\r\nextra`,
+      headers: { "Content-Type": "multipart/form-data; boundary=test-boundary" },
+      method: "POST",
+    });
+
+    // Then
+    expect(missingCloseResponse.status).toBe(400);
+    expect(trailingDataResponse.status).toBe(400);
+  });
+
+  test("mock handlers update postImage preview and use a valid bundled audio preview", async () => {
+    // Given
+    server.use(...createMockHandlers(createMockStore(), apiBaseUrl));
+
+    const beforeListResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts?page=0&size=20");
+    const beforeList = requireData(createApiResponseSchema(communityPostListResponseSchema).parse(await beforeListResponse.json()).data);
+    const beforePost = beforeList.items.find((post) => post.postId === 7001);
+    if (beforePost === undefined) {
+      throw new Error("expected community post fixture");
+    }
+
+    // When
+    const updateResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts/7001", multipartInit("PUT", { content: "이미지 갱신", isAdult: false, isCommentAvailable: true, isFixed: true }, ["postImage"]));
+    const listResponse = await authorizedFetch("/api/v2/admin/ai-characters/101/community-posts?page=0&size=20");
+    const afterList = requireData(createApiResponseSchema(communityPostListResponseSchema).parse(await listResponse.json()).data);
+    const afterPost = afterList.items.find((post) => post.postId === 7001);
+
+    // Then
+    expect(createApiResponseSchema(z.null()).parse(await updateResponse.json()).data).toBeNull();
+    expect(previewCommunityPostAudioUrl).toMatch(/^data:audio\/wav;base64,/);
+    expect(beforePost.imageUrl).toBeNull();
+    expect(afterPost?.imageUrl).toMatch(/^data:image\//);
+    expect(afterPost?.imageUrl).not.toBe(beforePost.imageUrl);
+  });
+});
diff --git a/src/features/community-posts/tests/community-form.test.tsx b/src/features/community-posts/tests/community-form.test.tsx
new file mode 100644
index 0000000..1082a34
--- /dev/null
+++ b/src/features/community-posts/tests/community-form.test.tsx
@@ -0,0 +1,323 @@
+import { act, fireEvent, render, screen, waitFor } from "@testing-library/react";
+import { http, HttpResponse } from "msw";
+import { afterEach, expect, test, vi } from "vitest";
+
+import { App } from "@/app/App";
+import { apiBaseUrl, saveAdminSession, useAiCharacterDetailResponse, useAiCharactersResponse } from "@/app/app-test-support";
+import { CommunityPostFormPage } from "@/features/community-posts/pages/CommunityPostFormPage";
+import { validateCommunityPostImageFile } from "@/features/community-posts/validation/community-post-media-policy";
+import { fileWithSize, readJsonPart, requireFormData } from "@/features/audio-contents/tests/audio-form-test-support";
+import type { ApiClient, ApiRequestOptions } from "@/shared/api/client";
+import type { CropRenderRequest } from "@/shared/lib/crop-image";
+import type { CropSourceImage } from "@/shared/ui/image-crop-dialog";
+import { server } from "@/shared/test/server";
+import { basePost, inactiveCharacter } from "./community-test-support";
+
+type CapturedRequest = {
+  readonly body?: BodyInit | null;
+  readonly method?: string;
+  readonly path: string;
+};
+
+function createCommunityFormClient(requests: CapturedRequest[], isActive = true): ApiClient {
+  return {
+    async request<Data>(options: ApiRequestOptions<Data>): Promise<Data> {
+      requests.push({ body: options.body, method: options.method, path: options.path });
+      if (options.path === "/api/v2/admin/ai-characters/202") {
+        return options.responseSchema.parse(inactiveCharacter);
+      }
+      if (options.path === "/api/v2/admin/ai-characters/101") {
+        return options.responseSchema.parse({
+          id: 101,
+          characterUUID: "character-uuid-101",
+          name: "루나",
+          imageUrl: null,
+          description: "차분한 상담형 AI 캐릭터",
+          systemPrompt: "친절하고 안전하게 답한다.",
+          characterType: "Character",
+          age: 24,
+          gender: "여성",
+          mbti: "INFJ",
+          speechPattern: "존댓말",
+          speechStyle: "다정함",
+          appearance: null,
+          region: "KR",
+          isActive,
+          tags: ["상담", "힐링"],
+          hobbies: [],
+          values: [],
+          goals: [],
+          relationships: [],
+          personalities: [],
+          backgrounds: [],
+          memories: [],
+          originalWork: null,
+        });
+      }
+
+      return options.responseSchema.parse(null);
+    },
+  };
+}
+
+function createCropSource(file: File): Promise<CropSourceImage> {
+  if (file.name === "wide.png") {
+    return Promise.resolve({ file, height: 500, previewUrl: "blob:wide", width: 1000 });
+  }
+  if (file.name === "big.gif") {
+    return Promise.resolve({ file, height: 600, previewUrl: "blob:big-gif", width: 801 });
+  }
+
+  return Promise.resolve({ file, height: 600, previewUrl: "blob:gif", width: 800 });
+}
+
+afterEach(() => {
+  vi.unstubAllEnvs();
+  window.history.replaceState({}, "", "/");
+});
+
+test("Community create route opens from the existing list workspace", async () => {
+  // Given
+  saveAdminSession();
+  vi.stubEnv("VITE_API_BASE_URL", apiBaseUrl);
+  useAiCharactersResponse();
+  useAiCharacterDetailResponse("101");
+  server.use(http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts`, () => HttpResponse.json({ success: true, message: null, data: { totalCount: 1, page: 0, size: 20, hasNext: false, items: [basePost] }, errorProperty: null })));
+  window.history.pushState({}, "", "/ai-characters/101/community-posts?page=0&size=20");
+
+  // When
+  render(<App />);
+  fireEvent.click(await screen.findByRole("link", { name: "커뮤니티 게시글 생성" }));
+
+  // Then
+  expect(await screen.findByRole("heading", { name: "커뮤니티 게시글 생성" })).toBeInTheDocument();
+  expect(window.location.pathname).toBe("/ai-characters/101/community-posts/new");
+});
+
+test("Community create entrypoints are blocked for inactive characters", async () => {
+  // Given
+  saveAdminSession();
+  vi.stubEnv("VITE_API_BASE_URL", apiBaseUrl);
+  useAiCharactersResponse();
+  server.use(
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/202`, () => HttpResponse.json({ success: true, message: null, data: inactiveCharacter, errorProperty: null })),
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/202/community-posts`, () => HttpResponse.json({ success: true, message: null, data: { totalCount: 0, page: 0, size: 20, hasNext: false, items: [] }, errorProperty: null })),
+  );
+  window.history.pushState({}, "", "/ai-characters/202/community-posts?page=0&size=20");
+
+  // When
+  render(<App />);
+
+  // Then
+  expect(await screen.findByText("비활성 캐릭터는 읽기 전용입니다.")).toBeInTheDocument();
+  expect(screen.queryByRole("link", { name: "커뮤니티 게시글 생성" })).not.toBeInTheDocument();
+
+  // When
+  window.history.pushState({}, "", "/ai-characters/202/community-posts/new");
+  render(<CommunityPostFormPage apiClient={createCommunityFormClient([], false)} characterId="202" createCropSource={createCropSource} />);
+
+  // Then
+  expect(await screen.findByText("비활성 캐릭터는 읽기 전용입니다.")).toBeInTheDocument();
+  expect(screen.queryByRole("form", { name: "커뮤니티 게시글 생성 입력 화면" })).not.toBeInTheDocument();
+  expect(screen.queryByRole("button", { name: "생성" })).not.toBeInTheDocument();
+});
+
+test("Community create form validates content audio policy and GIF width before submit", async () => {
+  // Given
+  const requests: CapturedRequest[] = [];
+  const audioFile = fileWithSize("voice.m4a", "audio/x-m4a", 1_024_000_000);
+  const animatedGif = new File(["gif"], "post.gif", { type: "image/gif" });
+  window.history.pushState({}, "", "/ai-characters/101/community-posts/new");
+  render(<CommunityPostFormPage apiClient={createCommunityFormClient(requests)} characterId="101" createCropSource={createCropSource} />);
+
+  // When
+  fireEvent.click(await screen.findByRole("button", { name: "생성" }));
+
+  // Then
+  expect(await screen.findByText("내용을 입력하세요.")).toBeInTheDocument();
+
+  // When
+  fireEvent.change(screen.getByLabelText("내용"), { target: { value: "GIF와 오디오가 있는 게시글" } });
+  fireEvent.change(screen.getByLabelText("오디오 파일"), { target: { files: [fileWithSize("voice.wav", "audio/wav", 10)] } });
+  fireEvent.click(screen.getByRole("button", { name: "생성" }));
+
+  // Then
+  expect(await screen.findByText("MP3, AAC, M4A 파일만 업로드하세요.")).toBeInTheDocument();
+
+  // When
+  fireEvent.change(screen.getByLabelText("오디오 파일"), { target: { files: [audioFile] } });
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [new File(["gif"], "big.gif", { type: "image/gif" })] } });
+  fireEvent.click(screen.getByRole("button", { name: "생성" }));
+
+  // Then
+  expect(await screen.findByText("GIF 이미지는 원본 width 800px 이하만 업로드할 수 있습니다.")).toBeInTheDocument();
+  expect(requests.filter((request) => request.method === "POST")).toHaveLength(0);
+
+  // When
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [animatedGif] } });
+  await waitFor(() => expect(screen.getByRole("button", { name: "생성" })).not.toBeDisabled());
+  fireEvent.click(screen.getByRole("button", { name: "생성" }));
+
+  // Then
+  await waitFor(() => expect(window.location.pathname).toBe("/ai-characters/101/community-posts"));
+  expect(screen.queryByRole("dialog", { name: "이미지 crop" })).not.toBeInTheDocument();
+  const body = requireFormData(requests.at(-1)?.body);
+  expect(body.get("audioFile")).toBe(audioFile);
+  expect(body.get("postImage")).toBe(animatedGif);
+  expect(await readJsonPart(body.get("request"))).toEqual({ content: "GIF와 오디오가 있는 게시글", isAdult: false, isCommentAvailable: true });
+});
+
+test("Community create form crops JPEG PNG with free ratio and no upscale", async () => {
+  // Given
+  const requests: CapturedRequest[] = [];
+  const croppedImage = new File(["cropped"], "post-cropped.png", { type: "image/png" });
+  const renderCrop: (request: CropRenderRequest) => Promise<File> = vi.fn(() => Promise.resolve(croppedImage));
+  window.history.pushState({}, "", "/ai-characters/101/community-posts/new");
+  render(<CommunityPostFormPage apiClient={createCommunityFormClient(requests)} characterId="101" createCropSource={createCropSource} renderCrop={renderCrop} />);
+
+  // When
+  fireEvent.change(await screen.findByLabelText("내용"), { target: { value: "PNG crop 게시글" } });
+  fireEvent.change(screen.getByLabelText("가격"), { target: { value: "1,000캔" } });
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [new File(["image"], "wide.png", { type: "image/png" })] } });
+  expect(await screen.findByRole("dialog", { name: "이미지 crop" })).toBeInTheDocument();
+  expect(screen.getByRole("button", { name: "생성" })).toBeDisabled();
+  fireEvent.submit(screen.getByRole("form", { name: "커뮤니티 게시글 생성 입력 화면" }));
+  expect(requests.filter((request) => request.method === "POST")).toHaveLength(0);
+  fireEvent.click(await screen.findByRole("button", { name: "적용" }));
+  await waitFor(() => expect(renderCrop).toHaveBeenCalled());
+  fireEvent.click(screen.getByRole("button", { name: "생성" }));
+
+  // Then
+  await waitFor(() => expect(window.location.pathname).toBe("/ai-characters/101/community-posts"));
+  expect(renderCrop).toHaveBeenCalledWith(expect.objectContaining({ aspect: "free", outputHeight: 400, outputWidth: 800 }));
+  const body = requireFormData(requests.at(-1)?.body);
+  expect(body.get("postImage")).toBe(croppedImage);
+  expect(await readJsonPart(body.get("request"))).toEqual({ content: "PNG crop 게시글", isAdult: false, isCommentAvailable: true, price: 1000 });
+});
+
+test("Community create form blocks prices outside the CAN range before submit", async () => {
+  // Given
+  const requests: CapturedRequest[] = [];
+  window.history.pushState({}, "", "/ai-characters/101/community-posts/new");
+  render(<CommunityPostFormPage apiClient={createCommunityFormClient(requests)} characterId="101" createCropSource={createCropSource} />);
+
+  // When
+  fireEvent.change(await screen.findByLabelText("내용"), { target: { value: "가격 경계 게시글" } });
+  fireEvent.change(screen.getByLabelText("가격"), { target: { value: "100,000캔" } });
+  fireEvent.click(screen.getByRole("button", { name: "생성" }));
+
+  // Then
+  expect(await screen.findByText("가격은 0 이상 99,999 이하 정수 캔으로 입력하세요.")).toBeInTheDocument();
+  expect(requests.filter((request) => request.method === "POST")).toHaveLength(0);
+});
+
+test("Community create form links validation errors and focuses the first invalid control", async () => {
+  // Given
+  const requests: CapturedRequest[] = [];
+  window.history.pushState({}, "", "/ai-characters/101/community-posts/new");
+  render(<CommunityPostFormPage apiClient={createCommunityFormClient(requests)} characterId="101" createCropSource={createCropSource} />);
+
+  // When
+  const contentInput = await screen.findByLabelText("내용");
+  fireEvent.change(screen.getByLabelText("가격"), { target: { value: "100,000캔" } });
+  fireEvent.click(screen.getByRole("button", { name: "생성" }));
+
+  // Then
+  const contentError = await screen.findByText("내용을 입력하세요.");
+  const priceError = screen.getByText("가격은 0 이상 99,999 이하 정수 캔으로 입력하세요.");
+  expect(contentError).toHaveAttribute("id", "community-post-content-error");
+  expect(priceError).toHaveAttribute("id", "community-post-price-error");
+  expect(contentInput).toHaveAttribute("aria-describedby", "community-post-content-error");
+  expect(screen.getByLabelText("가격")).toHaveAttribute("aria-describedby", "community-post-price-error");
+  expect(contentInput).toHaveAttribute("aria-invalid", "true");
+  expect(screen.getByLabelText("가격")).toHaveAttribute("aria-invalid", "true");
+  await waitFor(() => expect(contentInput).toHaveFocus());
+  expect(requests.filter((request) => request.method === "POST")).toHaveLength(0);
+});
+
+test("Community create form keeps submit disabled while image preparation is pending", async () => {
+  // Given
+  let resolveCropSource: (source: CropSourceImage) => void = () => undefined;
+  const requests: CapturedRequest[] = [];
+  const cropSourceReady = new Promise<CropSourceImage>((resolve) => {
+    resolveCropSource = resolve;
+  });
+  window.history.pushState({}, "", "/ai-characters/101/community-posts/new");
+  render(<CommunityPostFormPage apiClient={createCommunityFormClient(requests)} characterId="101" createCropSource={() => cropSourceReady} />);
+
+  // When
+  fireEvent.change(await screen.findByLabelText("내용"), { target: { value: "느린 이미지 준비" } });
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [new File(["image"], "wide.png", { type: "image/png" })] } });
+
+  // Then
+  expect(screen.getByRole("button", { name: "생성" })).toBeDisabled();
+
+  // When
+  resolveCropSource({ file: new File(["image"], "wide.png", { type: "image/png" }), height: 500, previewUrl: "blob:wide", width: 1000 });
+
+  // Then
+  expect(await screen.findByRole("dialog", { name: "이미지 crop" })).toBeInTheDocument();
+});
+
+test("Community image policy rejects mismatched MIME and extension combinations", () => {
+  expect(validateCommunityPostImageFile(new File(["image"], "post.gif", { type: "image/png" }))).toEqual({ ok: false, reason: "mime" });
+  expect(validateCommunityPostImageFile(new File(["image"], "post.png", { type: "image/gif" }))).toEqual({ ok: false, reason: "mime" });
+  expect(validateCommunityPostImageFile(new File(["image"], "post.jpg", { type: "image/png" }))).toEqual({ ok: false, reason: "mime" });
+});
+
+test("Community create form ignores stale image preparation results", async () => {
+  let resolveStaleCropSource: (source: CropSourceImage) => void = () => undefined;
+  const staleCropSource = new Promise<CropSourceImage>((resolve) => {
+    resolveStaleCropSource = resolve;
+  });
+  const requests: CapturedRequest[] = [];
+  const createRaceCropSource = (file: File) => file.name === "stale.png" ? staleCropSource : createCropSource(file);
+  window.history.pushState({}, "", "/ai-characters/101/community-posts/new");
+  render(<CommunityPostFormPage apiClient={createCommunityFormClient(requests)} characterId="101" createCropSource={createRaceCropSource} />);
+
+  fireEvent.change(await screen.findByLabelText("내용"), { target: { value: "최신 이미지만 저장" } });
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [new File(["image"], "stale.png", { type: "image/png" })] } });
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [new File(["gif"], "fresh.gif", { type: "image/gif" })] } });
+
+  await waitFor(() => expect(screen.getByRole("button", { name: "생성" })).not.toBeDisabled());
+  await act(async () => {
+    resolveStaleCropSource({ file: new File(["image"], "stale.png", { type: "image/png" }), height: 500, previewUrl: "blob:stale", width: 1000 });
+    await staleCropSource;
+  });
+  expect(screen.queryByRole("dialog", { name: "이미지 crop" })).not.toBeInTheDocument();
+  fireEvent.click(screen.getByRole("button", { name: "생성" }));
+
+  await waitFor(() => expect(window.location.pathname).toBe("/ai-characters/101/community-posts"));
+  const submittedImage = requireFormData(requests.at(-1)?.body).get("postImage");
+  if (!(submittedImage instanceof File)) {
+    throw new Error("expected submitted image file");
+  }
+  expect(submittedImage.name).toBe("fresh.gif");
+});
+
+test("Community create form clears pending image preparation when selection is canceled", async () => {
+  let resolveCropSource: (source: CropSourceImage) => void = () => undefined;
+  const cropSourceReady = new Promise<CropSourceImage>((resolve) => {
+    resolveCropSource = resolve;
+  });
+  const requests: CapturedRequest[] = [];
+  const createRaceCropSource = (file: File) => file.name === "slow.png" ? cropSourceReady : createCropSource(file);
+  window.history.pushState({}, "", "/ai-characters/101/community-posts/new");
+  render(<CommunityPostFormPage apiClient={createCommunityFormClient(requests)} characterId="101" createCropSource={createRaceCropSource} />);
+
+  fireEvent.change(await screen.findByLabelText("내용"), { target: { value: "이미지 취소 후 저장" } });
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [new File(["gif"], "ready.gif", { type: "image/gif" })] } });
+  await waitFor(() => expect(screen.getByRole("button", { name: "생성" })).not.toBeDisabled());
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [new File(["image"], "slow.png", { type: "image/png" })] } });
+  fireEvent.click(screen.getByRole("button", { name: "선택 취소" }));
+  await act(async () => {
+    resolveCropSource({ file: new File(["image"], "slow.png", { type: "image/png" }), height: 500, previewUrl: "blob:slow", width: 1000 });
+    await cropSourceReady;
+  });
+
+  expect(screen.getByRole("button", { name: "생성" })).not.toBeDisabled();
+  fireEvent.click(screen.getByRole("button", { name: "생성" }));
+
+  await waitFor(() => expect(window.location.pathname).toBe("/ai-characters/101/community-posts"));
+  expect(requireFormData(requests.at(-1)?.body).has("postImage")).toBe(false);
+});
diff --git a/src/features/community-posts/tests/community-list.test.tsx b/src/features/community-posts/tests/community-list.test.tsx
new file mode 100644
index 0000000..a18368b
--- /dev/null
+++ b/src/features/community-posts/tests/community-list.test.tsx
@@ -0,0 +1,121 @@
+import { act, fireEvent, render, screen } from "@testing-library/react";
+import { http, HttpResponse } from "msw";
+import { afterEach, expect, test, vi } from "vitest";
+
+import { App } from "@/app/App";
+import { apiBaseUrl, saveAdminSession, useAiCharacterDetailResponse, useAiCharactersResponse } from "@/app/app-test-support";
+import { server } from "@/shared/test/server";
+
+const communityPost = {
+  postId: 7001,
+  creatorId: 101,
+  creatorNickname: "루나",
+  creatorProfileUrl: "https://cdn.example.com/characters/luna.png",
+  imageUrl: null,
+  audioUrl: null,
+  content: "오늘의 상담 기록입니다.",
+  price: 0,
+  date: "2026-07-28 10:00:00",
+  dateUtc: "2026-07-28T01:00:00Z",
+  isCommentAvailable: true,
+  isAdult: false,
+  isFixed: false,
+  isLike: false,
+  existOrdered: false,
+  likeCount: 3,
+  commentCount: 0,
+  firstComment: null,
+} as const;
+
+afterEach(() => {
+  vi.unstubAllEnvs();
+  window.history.replaceState({}, "", "/");
+});
+
+test("Community list uses required query only and renders loading empty error retry", async () => {
+  // Given
+  saveAdminSession();
+  vi.stubEnv("VITE_API_BASE_URL", apiBaseUrl);
+  useAiCharactersResponse();
+  useAiCharacterDetailResponse("101");
+  const communityRequests: Request[] = [];
+  let listRequestCount = 0;
+  let resolveFirstListReady: (finish: () => void) => void = () => undefined;
+  const firstListReady = new Promise<() => void>((resolve) => {
+    resolveFirstListReady = resolve;
+  });
+  server.use(
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts`, ({ request }) => {
+      communityRequests.push(request);
+      listRequestCount += 1;
+      if (listRequestCount === 1) {
+        return new Promise((resolve) => {
+          resolveFirstListReady(() => resolve(HttpResponse.json({ success: true, message: null, data: { totalCount: 0, page: 0, size: 20, hasNext: false, items: [] }, errorProperty: null })));
+        });
+      }
+      if (listRequestCount === 2) {
+        return HttpResponse.json({ success: false, message: "커뮤니티 목록 실패", data: null, errorProperty: null }, { status: 500 });
+      }
+
+      return HttpResponse.json({ success: true, message: null, data: { totalCount: 21, page: 1, size: 20, hasNext: false, items: [communityPost] }, errorProperty: null });
+    }),
+  );
+  window.history.pushState({}, "", "/ai-characters/101/community-posts?page=0&size=20&search=상담&active=true");
+
+  // When
+  render(<App />);
+
+  // Then
+  expect(await screen.findByText("커뮤니티 게시글 목록을 불러오는 중")).toBeInTheDocument();
+  const finishFirstList = await firstListReady;
+  finishFirstList();
+  expect(await screen.findByText("등록된 커뮤니티 게시글이 없습니다.")).toBeInTheDocument();
+  const firstUrl = new URL(communityRequests[0]?.url ?? "");
+  expect([...firstUrl.searchParams.keys()]).toEqual(["page", "size"]);
+  expect(firstUrl.searchParams.has("timezone")).toBe(false);
+  expect(screen.queryByRole("searchbox", { name: "검색어" })).not.toBeInTheDocument();
+
+  // When
+  act(() => {
+    window.history.pushState({}, "", "/ai-characters/101/community-posts?page=1&size=20");
+    window.dispatchEvent(new PopStateEvent("popstate"));
+  });
+
+  // Then
+  expect(await screen.findByRole("alert")).toHaveTextContent("커뮤니티 목록 실패");
+  fireEvent.click(screen.getByRole("button", { name: "다시 시도" }));
+  expect(await screen.findByRole("heading", { name: "커뮤니티 게시글" })).toBeInTheDocument();
+  expect(screen.getByRole("link", { name: "커뮤니티" })).toHaveAttribute("aria-current", "page");
+  const openButtons = screen.getAllByRole("button", { name: "오늘의 상담 기록입니다. 게시글 열기" });
+  expect(openButtons.length).toBeGreaterThan(0);
+  expect(openButtons[0]).toHaveTextContent("열기");
+  expect(openButtons[0]).not.toHaveTextContent(communityPost.content);
+  const statusLabels = screen.getAllByText("일반 · 댓글 허용 · 일반 콘텐츠");
+  expect(statusLabels).toHaveLength(2);
+  expect(statusLabels[0]).toHaveClass("whitespace-nowrap");
+  expect(screen.queryByText("일반 · 댓글 허용 · 성인 false")).not.toBeInTheDocument();
+  expect(screen.getByText("총 21개 · 2페이지")).toBeInTheDocument();
+  expect(screen.getByRole("button", { name: "다음 페이지" })).toBeDisabled();
+});
+
+test("Community detail and edit paths are not app routes", async () => {
+  // Given
+  saveAdminSession();
+  vi.stubEnv("VITE_API_BASE_URL", apiBaseUrl);
+  useAiCharactersResponse();
+  const detailRequests: Request[] = [];
+  server.use(
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts/:postId`, ({ request }) => {
+      detailRequests.push(request);
+      return HttpResponse.json({ success: false, message: "detail must not be called", data: null, errorProperty: null }, { status: 500 });
+    }),
+  );
+  window.history.pushState({}, "", "/ai-characters/101/community-posts/7001/edit");
+
+  // When
+  render(<App />);
+
+  // Then
+  expect(await screen.findByRole("heading", { name: "AI 캐릭터" })).toBeInTheDocument();
+  expect(detailRequests).toHaveLength(0);
+});
diff --git a/src/features/community-posts/tests/community-mutation-pending.test.tsx b/src/features/community-posts/tests/community-mutation-pending.test.tsx
new file mode 100644
index 0000000..2a7a584
--- /dev/null
+++ b/src/features/community-posts/tests/community-mutation-pending.test.tsx
@@ -0,0 +1,44 @@
+import { fireEvent, render, screen, waitFor } from "@testing-library/react";
+import { expect, test } from "vitest";
+
+import { CommunityPostForm } from "@/features/community-posts/components/CommunityPostForm";
+import { CommunityPostSheet } from "@/features/community-posts/components/CommunityPostSheet";
+import { basePost, createCropSource } from "@/features/community-posts/tests/community-test-support";
+import type { ApiClient, ApiRequestOptions } from "@/shared/api/client";
+
+function createPendingClient(requests: ApiRequestOptions<unknown>[]): ApiClient {
+  return {
+    request<Data>(options: ApiRequestOptions<Data>): Promise<Data> {
+      requests.push(options as ApiRequestOptions<unknown>);
+      return new Promise<Data>(() => undefined);
+    },
+  };
+}
+
+test("Community create shows saving status and sends one request while pending", async () => {
+  const requests: ApiRequestOptions<unknown>[] = [];
+  render(<CommunityPostForm apiClient={createPendingClient(requests)} characterId="101" createCropSource={createCropSource} onCreated={() => undefined} />);
+
+  fireEvent.change(screen.getByLabelText("내용"), { target: { value: "커뮤니티 저장 중" } });
+  const submitButton = screen.getByRole("button", { name: "생성" });
+  fireEvent.click(submitButton);
+  fireEvent.click(submitButton);
+
+  await waitFor(() => expect(requests.filter((request) => request.method === "POST")).toHaveLength(1));
+  expect(screen.getByText("커뮤니티 게시글을 저장하는 중")).toHaveAttribute("role", "status");
+  expect(submitButton).toBeDisabled();
+});
+
+test("Community sheet shows saving status and sends one update while pending", async () => {
+  const requests: ApiRequestOptions<unknown>[] = [];
+  render(<CommunityPostSheet apiClient={createPendingClient(requests)} canMutate characterId="101" createCropSource={createCropSource} onClose={() => undefined} onDeleted={() => undefined} onMutated={() => undefined} post={basePost} />);
+
+  fireEvent.change(screen.getByLabelText("내용"), { target: { value: "커뮤니티 수정 중" } });
+  const saveButton = screen.getByRole("button", { name: "수정 저장" });
+  fireEvent.click(saveButton);
+  fireEvent.click(saveButton);
+
+  await waitFor(() => expect(requests.filter((request) => request.method === "PUT")).toHaveLength(1));
+  expect(screen.getByText("커뮤니티 게시글을 저장하는 중")).toHaveAttribute("role", "status");
+  expect(saveButton).toBeDisabled();
+});
diff --git a/src/features/community-posts/tests/community-post-media-policy.test.ts b/src/features/community-posts/tests/community-post-media-policy.test.ts
new file mode 100644
index 0000000..457e40c
--- /dev/null
+++ b/src/features/community-posts/tests/community-post-media-policy.test.ts
@@ -0,0 +1,59 @@
+import { expect, test, vi } from "vitest";
+
+import { prepareCommunityPostImage } from "@/features/community-posts/validation/community-post-media-policy";
+import type { CropSourceImage } from "@/shared/ui/image-crop-dialog";
+
+type TestCropSourceOptions = {
+  readonly events?: string[];
+  readonly file: File;
+  readonly release?: () => void;
+  readonly width: number;
+};
+
+function testCropSource({ events, file, release = vi.fn(), width }: TestCropSourceOptions): CropSourceImage {
+  return {
+    file,
+    height: 600,
+    previewUrl: `blob:${file.name}`,
+    release: () => {
+      events?.push("release");
+      release();
+    },
+    get width() {
+      events?.push("width");
+      return width;
+    },
+  };
+}
+
+test("prepareCommunityPostImage releases GIF crop sources after width validation", async () => {
+  const validGif = new File(["gif"], "valid.gif", { type: "image/gif" });
+  const oversizedGif = new File(["gif"], "oversized.gif", { type: "image/gif" });
+  const jpeg = new File(["jpeg"], "post.jpg", { type: "image/jpeg" });
+  const releaseValid = vi.fn();
+  const releaseOversized = vi.fn();
+  const releaseJpeg = vi.fn();
+  const jpegSource = testCropSource({ file: jpeg, release: releaseJpeg, width: 800 });
+  const validEvents: string[] = [];
+  const oversizedEvents: string[] = [];
+  const createCropSource = vi.fn((file: File) => {
+    if (file === validGif) {
+      return Promise.resolve(testCropSource({ events: validEvents, file, release: releaseValid, width: 800 }));
+    }
+    if (file === oversizedGif) {
+      return Promise.resolve(testCropSource({ events: oversizedEvents, file, release: releaseOversized, width: 801 }));
+    }
+
+    return Promise.resolve(jpegSource);
+  });
+
+  await expect(prepareCommunityPostImage(validGif, createCropSource)).resolves.toEqual({ file: validGif, kind: "ready" });
+  await expect(prepareCommunityPostImage(oversizedGif, createCropSource)).resolves.toEqual({ kind: "error", message: "GIF 이미지는 원본 width 800px 이하만 업로드할 수 있습니다." });
+  await expect(prepareCommunityPostImage(jpeg, createCropSource)).resolves.toEqual({ kind: "crop", source: jpegSource });
+
+  expect(releaseValid).toHaveBeenCalledTimes(1);
+  expect(releaseOversized).toHaveBeenCalledTimes(1);
+  expect(releaseJpeg).not.toHaveBeenCalled();
+  expect(validEvents).toEqual(["width", "release"]);
+  expect(oversizedEvents).toEqual(["width", "release"]);
+});
diff --git a/src/features/community-posts/tests/community-price-validation.test.tsx b/src/features/community-posts/tests/community-price-validation.test.tsx
new file mode 100644
index 0000000..c695b56
--- /dev/null
+++ b/src/features/community-posts/tests/community-price-validation.test.tsx
@@ -0,0 +1,65 @@
+import { fireEvent, render, screen, waitFor } from "@testing-library/react";
+import { expect, test, vi } from "vitest";
+
+import { CommunityPostForm } from "@/features/community-posts/components/CommunityPostForm";
+import { formatCommunityPostPrice, parseCommunityPostPrice } from "@/features/community-posts/components/community-post-form-helpers";
+import type { ApiClient, ApiRequestOptions } from "@/shared/api/client";
+
+type CapturedRequest = {
+  readonly body?: BodyInit | null;
+  readonly method?: string;
+  readonly path: string;
+};
+
+function createClient(requests: CapturedRequest[]): ApiClient {
+  return {
+    async request<Data>(options: ApiRequestOptions<Data>): Promise<Data> {
+      requests.push({ body: options.body, method: options.method, path: options.path });
+      return options.responseSchema.parse(null);
+    },
+  };
+}
+
+function renderForm(requests: CapturedRequest[]) {
+  const onCreated = vi.fn();
+  render(<CommunityPostForm apiClient={createClient(requests)} characterId="101" createCropSource={(file) => Promise.resolve({ file, height: 600, previewUrl: "blob:post", width: 800 })} onCreated={onCreated} />);
+
+  return onCreated;
+}
+
+async function submitWithPrice(value: string, requests: CapturedRequest[]) {
+  fireEvent.change(screen.getByLabelText("내용"), { target: { value: "가격 검증 게시글" } });
+  fireEvent.change(screen.getByLabelText("가격"), { target: { value } });
+  fireEvent.click(screen.getByRole("button", { name: "생성" }));
+  await screen.findByText("가격은 0 이상 99,999 이하 정수 캔으로 입력하세요.");
+  expect(requests.filter((request) => request.method === "POST")).toHaveLength(0);
+}
+
+test.each(["-1", "1.5"])("Community price keeps invalid raw input %s and blocks submit", async (value) => {
+  const requests: CapturedRequest[] = [];
+  const onCreated = renderForm(requests);
+
+  await submitWithPrice(value, requests);
+
+  expect(screen.getByLabelText("가격")).toHaveValue(value);
+  expect(onCreated).not.toHaveBeenCalled();
+});
+
+test.each(["0", "99,999캔"])("Community price allows boundary input %s", async (value) => {
+  const requests: CapturedRequest[] = [];
+  const onCreated = renderForm(requests);
+
+  fireEvent.change(screen.getByLabelText("내용"), { target: { value: "가격 경계 게시글" } });
+  fireEvent.change(screen.getByLabelText("가격"), { target: { value } });
+  fireEvent.click(screen.getByRole("button", { name: "생성" }));
+
+  await waitFor(() => expect(onCreated).toHaveBeenCalledTimes(1));
+  expect(requests.filter((request) => request.method === "POST")).toHaveLength(1);
+});
+
+test("Community price parser rejects negative and decimal raw input", () => {
+  expect(parseCommunityPostPrice("-1")).toBeNull();
+  expect(parseCommunityPostPrice("1.5")).toBeNull();
+  expect(formatCommunityPostPrice("-1")).toBe("-1");
+  expect(formatCommunityPostPrice("1.5")).toBe("1.5");
+});
diff --git a/src/features/community-posts/tests/community-sheet.test.tsx b/src/features/community-posts/tests/community-sheet.test.tsx
new file mode 100644
index 0000000..a190c76
--- /dev/null
+++ b/src/features/community-posts/tests/community-sheet.test.tsx
@@ -0,0 +1,273 @@
+import { act, fireEvent, render, screen, waitFor, within } from "@testing-library/react";
+import { http, HttpResponse } from "msw";
+import { afterEach, expect, test, vi } from "vitest";
+
+import { App } from "@/app/App";
+import { apiBaseUrl, saveAdminSession, useAiCharacterDetailResponse, useAiCharactersResponse } from "@/app/app-test-support";
+import { CommunityPostSheet } from "@/features/community-posts/components/CommunityPostSheet";
+import type { CropSourceImage } from "@/shared/ui/image-crop-dialog";
+import { server } from "@/shared/test/server";
+import { basePost, createCropSource, createSheetClient, inactiveCharacter, installCommunityHandlers, readJsonPart, requireFormData } from "./community-test-support";
+import type { CapturedApiRequest, CommunitySheetState } from "./community-test-support";
+
+afterEach(() => {
+  vi.unstubAllEnvs();
+  window.history.replaceState({}, "", "/");
+});
+
+test("Community Sheet edits pins unpins and soft deletes from the list item without detail GET", async () => {
+  // Given
+  saveAdminSession();
+  vi.stubEnv("VITE_API_BASE_URL", apiBaseUrl);
+  useAiCharactersResponse();
+  useAiCharacterDetailResponse("101");
+  const state: CommunitySheetState = { mutationCount: 0, post: basePost, requests: [] };
+  installCommunityHandlers(state);
+  window.history.pushState({}, "", "/ai-characters/101/community-posts?page=0&size=20");
+
+  // When
+  render(<App />);
+  const openButtons = await screen.findAllByRole("button", { name: "오늘의 상담 기록입니다. 게시글 열기" });
+  const openButton = openButtons[0];
+  if (openButton === undefined) {
+    throw new Error("expected community open button");
+  }
+  fireEvent.click(openButton);
+
+  // Then
+  const dialog = screen.getByRole("dialog", { name: "커뮤니티 게시글" });
+  expect(dialog).toHaveTextContent("오늘의 상담 기록입니다.");
+  expect(screen.getAllByRole("group", { name: "커뮤니티 게시글 7001 오디오 플레이어" }).some((player) => !dialog.contains(player))).toBe(true);
+  expect(within(dialog).getByRole("group", { name: "커뮤니티 게시글 7001 오디오 플레이어" })).toBeInTheDocument();
+  expect(screen.getByText("첫 댓글: 좋아요")).toBeInTheDocument();
+  expect(state.requests.filter((request) => new URL(request.url).pathname.includes("/community-posts/7001") && request.method === "GET")).toHaveLength(0);
+
+  // When
+  fireEvent.change(screen.getByLabelText("내용"), { target: { value: "수정된 커뮤니티 게시글" } });
+  fireEvent.click(screen.getByRole("checkbox", { name: "성인 콘텐츠" }));
+  fireEvent.click(screen.getByRole("checkbox", { name: "댓글 허용" }));
+  fireEvent.click(screen.getByRole("button", { name: "수정 저장" }));
+
+  // Then
+  await waitFor(() => expect(state.requests.some((request) => request.method === "PUT")).toBe(true));
+  await waitFor(() => expect(screen.getAllByText("수정된 커뮤니티 게시글").length).toBeGreaterThan(0));
+
+  // When
+  fireEvent.click(screen.getByRole("button", { name: "고정하기" }));
+
+  // Then
+  await waitFor(() => expect(screen.getByRole("button", { name: "고정 해제" })).toBeInTheDocument());
+
+  // When
+  fireEvent.click(screen.getByRole("button", { name: "고정 해제" }));
+
+  // Then
+  await waitFor(() => expect(screen.getByRole("button", { name: "고정하기" })).toBeInTheDocument());
+
+  // When
+  const deactivateButton = screen.getByRole("button", { name: "비활성화" });
+  deactivateButton.focus();
+  fireEvent.click(deactivateButton);
+
+  // Then
+  const confirmDialog = screen.getByRole("alertdialog", { name: "커뮤니티 게시글 비활성화 확인" });
+  expect(confirmDialog).toHaveTextContent("게시글을 목록에서 제외합니다.");
+  expect(state.requests.filter((request) => request.method === "PUT")).toHaveLength(3);
+
+  // When
+  fireEvent.click(within(confirmDialog).getByRole("button", { name: "취소" }));
+
+  // Then
+  expect(screen.queryByRole("alertdialog", { name: "커뮤니티 게시글 비활성화 확인" })).not.toBeInTheDocument();
+  await waitFor(() => expect(deactivateButton).toHaveFocus());
+  expect(state.requests.filter((request) => request.method === "PUT")).toHaveLength(3);
+
+  // When
+  fireEvent.click(screen.getByRole("button", { name: "비활성화" }));
+  const confirmButton = screen.getByRole("button", { name: "비활성화 확인" });
+  fireEvent.click(confirmButton);
+  fireEvent.click(confirmButton);
+
+  // Then
+  await waitFor(() => expect(screen.queryByRole("dialog", { name: "커뮤니티 게시글" })).not.toBeInTheDocument());
+  expect(state.requests.filter((request) => request.method === "PUT")).toHaveLength(4);
+  expect(await screen.findByLabelText("작업 성공")).toHaveTextContent("커뮤니티 게시글을 비활성화했습니다.");
+  expect(await screen.findByText("등록된 커뮤니티 게시글이 없습니다.")).toBeInTheDocument();
+}, 10_000);
+
+test("Community Sheet sends actual multipart update requests without audio or price", async () => {
+  // Given
+  const requests: CapturedApiRequest[] = [];
+  render(<CommunityPostSheet apiClient={createSheetClient(requests)} canMutate characterId="101" createCropSource={createCropSource} onClose={() => undefined} onDeleted={() => undefined} onMutated={() => undefined} post={basePost} />);
+
+  // When
+  fireEvent.change(screen.getByLabelText("내용"), { target: { value: "수정된 커뮤니티 게시글" } });
+  fireEvent.click(screen.getByRole("checkbox", { name: "성인 콘텐츠" }));
+  fireEvent.click(screen.getByRole("checkbox", { name: "댓글 허용" }));
+  fireEvent.click(screen.getByRole("button", { name: "수정 저장" }));
+
+  // Then
+  await waitFor(() => expect(requests).toHaveLength(1));
+  const updateBody = requireFormData(requests[0]?.body);
+  expect(updateBody.has("audioFile")).toBe(false);
+  expect(updateBody.has("price")).toBe(false);
+  expect(await readJsonPart(updateBody.get("request"))).toEqual({ content: "수정된 커뮤니티 게시글", isAdult: true, isCommentAvailable: false, isFixed: false });
+
+  // When
+  fireEvent.click(screen.getByRole("button", { name: "비활성화" }));
+
+  // Then
+  expect(requests).toHaveLength(1);
+
+  // When
+  const confirmButton = screen.getByRole("button", { name: "비활성화 확인" });
+  fireEvent.click(confirmButton);
+  fireEvent.click(confirmButton);
+
+  // Then
+  await waitFor(() => expect(requests).toHaveLength(2));
+  expect(await readJsonPart(requireFormData(requests[1]?.body).get("request"))).toEqual({ isActive: false, isFixed: false });
+});
+
+test("Community Sheet keeps save impossible while image preparation is pending", async () => {
+  // Given
+  let resolveCropSource: (source: CropSourceImage) => void = () => undefined;
+  const requests: CapturedApiRequest[] = [];
+  const cropSourceReady = new Promise<CropSourceImage>((resolve) => {
+    resolveCropSource = resolve;
+  });
+  render(<CommunityPostSheet apiClient={createSheetClient(requests)} canMutate characterId="101" createCropSource={() => cropSourceReady} onClose={() => undefined} onDeleted={() => undefined} onMutated={() => undefined} post={basePost} />);
+
+  // When
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [new File(["image"], "post.png", { type: "image/png" })] } });
+
+  // Then
+  expect(screen.getByRole("button", { name: "수정 저장" })).toBeDisabled();
+
+  // When
+  fireEvent.click(screen.getByRole("button", { name: "수정 저장" }));
+  resolveCropSource({ file: new File(["image"], "post.png", { type: "image/png" }), height: 600, previewUrl: "blob:pending", width: 800 });
+
+  // Then
+  expect(requests).toHaveLength(0);
+});
+
+test("Community Sheet ignores stale image preparation results", async () => {
+  let resolveStaleCropSource: (source: CropSourceImage) => void = () => undefined;
+  const staleCropSource = new Promise<CropSourceImage>((resolve) => {
+    resolveStaleCropSource = resolve;
+  });
+  const requests: CapturedApiRequest[] = [];
+  const createRaceCropSource = (file: File) => file.name === "stale.png" ? staleCropSource : createCropSource(file);
+  const freshGif = new File(["gif"], "fresh.gif", { type: "image/gif" });
+  render(<CommunityPostSheet apiClient={createSheetClient(requests)} canMutate characterId="101" createCropSource={createRaceCropSource} onClose={() => undefined} onDeleted={() => undefined} onMutated={() => undefined} post={basePost} />);
+
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [new File(["image"], "stale.png", { type: "image/png" })] } });
+  fireEvent.change(screen.getByLabelText("게시글 이미지"), { target: { files: [freshGif] } });
+
+  await waitFor(() => expect(screen.getByRole("button", { name: "수정 저장" })).not.toBeDisabled());
+  await act(async () => {
+    resolveStaleCropSource({ file: new File(["image"], "stale.png", { type: "image/png" }), height: 500, previewUrl: "blob:stale", width: 1000 });
+    await staleCropSource;
+  });
+  expect(screen.queryByRole("dialog", { name: "이미지 crop" })).not.toBeInTheDocument();
+  fireEvent.click(screen.getByRole("button", { name: "수정 저장" }));
+
+  await waitFor(() => expect(requests).toHaveLength(1));
+  expect(requireFormData(requests[0]?.body).get("postImage")).toBe(freshGif);
+});
+
+test("Community Sheet resets saving state and shows an alert when mutation fails", async () => {
+  saveAdminSession();
+  vi.stubEnv("VITE_API_BASE_URL", apiBaseUrl);
+  useAiCharactersResponse();
+  useAiCharacterDetailResponse("101");
+  server.use(
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts`, () => HttpResponse.json({ success: true, message: null, data: { totalCount: 1, page: 0, size: 20, hasNext: false, items: [basePost] }, errorProperty: null })),
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts/:postId/comments`, () => HttpResponse.json({ success: true, message: null, data: { totalCount: 0, items: [] }, errorProperty: null })),
+    http.put(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts/7001`, () => HttpResponse.json({ success: false, message: "저장 실패", data: null, errorProperty: null }, { status: 500 })),
+  );
+  window.history.pushState({}, "", "/ai-characters/101/community-posts?page=0&size=20");
+
+  render(<App />);
+  fireEvent.click((await screen.findAllByRole("button", { name: "오늘의 상담 기록입니다. 게시글 열기" }))[0]);
+  fireEvent.click(screen.getByRole("button", { name: "수정 저장" }));
+
+  expect(await screen.findByRole("alert")).toHaveTextContent("저장 실패");
+  expect(screen.getByRole("button", { name: "수정 저장" })).not.toBeDisabled();
+});
+
+test("Community media error does not refetch URLs or autoplay", async () => {
+  // Given
+  saveAdminSession();
+  vi.stubEnv("VITE_API_BASE_URL", apiBaseUrl);
+  useAiCharactersResponse();
+  useAiCharacterDetailResponse("101");
+  const requests: Request[] = [];
+  const play = vi.spyOn(window.HTMLMediaElement.prototype, "play").mockImplementation(() => Promise.resolve());
+  const load = vi.spyOn(window.HTMLMediaElement.prototype, "load").mockImplementation(() => undefined);
+  server.use(
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts`, ({ request }) => {
+      requests.push(request);
+      return HttpResponse.json({ success: true, message: null, data: { totalCount: 1, page: 0, size: 20, hasNext: false, items: [basePost] }, errorProperty: null });
+    }),
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts/:postId`, ({ request }) => {
+      requests.push(request);
+      return HttpResponse.json({ success: false, message: "detail must not be called", data: null, errorProperty: null }, { status: 500 });
+    }),
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts/:postId/comments`, () => HttpResponse.json({ success: true, message: null, data: { totalCount: 0, items: [] }, errorProperty: null })),
+  );
+  window.history.pushState({}, "", "/ai-characters/101/community-posts?page=0&size=20");
+
+  // When
+  render(<App />);
+  fireEvent.click((await screen.findAllByRole("button", { name: "오늘의 상담 기록입니다. 게시글 열기" }))[0]);
+  const audio = document.querySelector("audio");
+  if (audio === null) {
+    throw new Error("expected community audio player");
+  }
+  fireEvent.error(audio);
+  fireEvent.click(await screen.findByRole("button", { name: "오디오 다시 시도" }));
+
+  // Then
+  expect(requests.filter((request) => new URL(request.url).pathname === "/api/v2/admin/ai-characters/101/community-posts")).toHaveLength(1);
+  expect(requests.filter((request) => new URL(request.url).pathname.includes("/community-posts/7001"))).toHaveLength(0);
+  expect(audio).toHaveAttribute("src", basePost.audioUrl);
+  expect(load).toHaveBeenCalledTimes(1);
+  expect(play).not.toHaveBeenCalled();
+});
+
+test("Community Sheet hides mutation buttons for inactive characters", async () => {
+  // Given
+  saveAdminSession();
+  vi.stubEnv("VITE_API_BASE_URL", apiBaseUrl);
+  useAiCharactersResponse();
+  const requests: Request[] = [];
+  server.use(
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/202`, () => HttpResponse.json({ success: true, message: null, data: inactiveCharacter, errorProperty: null })),
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/202/community-posts`, ({ request }) => {
+      requests.push(request);
+      return HttpResponse.json({ success: true, message: null, data: { totalCount: 1, page: 0, size: 20, hasNext: false, items: [{ ...basePost, creatorId: 202, creatorNickname: "미카" }] }, errorProperty: null });
+    }),
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/202/community-posts/:postId/comments`, () => HttpResponse.json({ success: true, message: null, data: { totalCount: 0, items: [] }, errorProperty: null })),
+    http.put(`${apiBaseUrl}/api/v2/admin/ai-characters/202/community-posts/7001`, ({ request }) => {
+      requests.push(request);
+      return HttpResponse.json({ success: true, message: null, data: null, errorProperty: null });
+    }),
+  );
+  window.history.pushState({}, "", "/ai-characters/202/community-posts?page=0&size=20");
+
+  // When
+  render(<App />);
+  fireEvent.click((await screen.findAllByRole("button", { name: "오늘의 상담 기록입니다. 게시글 열기" }))[0]);
+
+  // Then
+  expect(await screen.findByText("비활성 캐릭터는 읽기 전용입니다.")).toBeInTheDocument();
+  expect(screen.getByRole("dialog", { name: "커뮤니티 게시글" })).toHaveTextContent("오늘의 상담 기록입니다.");
+  expect(screen.queryByRole("button", { name: "수정 저장" })).not.toBeInTheDocument();
+  expect(screen.queryByRole("button", { name: "고정하기" })).not.toBeInTheDocument();
+  expect(screen.queryByRole("button", { name: "비활성화" })).not.toBeInTheDocument();
+  expect(screen.queryByLabelText("새 댓글")).not.toBeInTheDocument();
+  expect(screen.queryByRole("button", { name: "댓글 등록" })).not.toBeInTheDocument();
+  expect(requests.filter((request) => request.method === "PUT")).toHaveLength(0);
+});
diff --git a/src/features/community-posts/tests/community-test-support.ts b/src/features/community-posts/tests/community-test-support.ts
new file mode 100644
index 0000000..771e96b
--- /dev/null
+++ b/src/features/community-posts/tests/community-test-support.ts
@@ -0,0 +1,212 @@
+import { http, HttpResponse } from "msw";
+
+import { apiBaseUrl } from "@/app/app-test-support";
+import type { CommunityPostListItem } from "@/features/community-posts/model/types";
+import type { ApiClient, ApiRequestOptions } from "@/shared/api/client";
+import { server } from "@/shared/test/server";
+import type { CropSourceImage } from "@/shared/ui/image-crop-dialog";
+
+export type CapturedApiRequest = {
+  readonly body?: BodyInit | null;
+  readonly method?: string;
+  readonly path: string;
+};
+
+export type CommunitySheetState = {
+  mutationCount: number;
+  post: CommunityPostListItem | null;
+  readonly requests: Request[];
+};
+
+export const contractCommunityPost = {
+  postId: 7001,
+  creatorId: 101,
+  creatorNickname: "루나",
+  creatorProfileUrl: "https://cdn.example.com/characters/luna.png",
+  imageUrl: "https://cdn.example.com/community/post.png",
+  audioUrl: "https://cdn.example.com/community/post.m4a",
+  content: "오늘의 상담 기록입니다.",
+  price: 0,
+  date: "2026-07-28 10:00:00",
+  dateUtc: "2026-07-28T01:00:00Z",
+  isCommentAvailable: true,
+  isAdult: false,
+  isFixed: false,
+  isLike: false,
+  existOrdered: false,
+  likeCount: 3,
+  commentCount: 1,
+  firstComment: {
+    id: 8001,
+    writerId: 301,
+    nickname: "팬",
+    profileUrl: "https://cdn.example.com/fan.png",
+    comment: "좋아요",
+    isSecret: false,
+    date: "2026-07-28 11:00:00",
+    replyCount: 0,
+  },
+} as const;
+
+export const basePost = {
+  ...contractCommunityPost,
+} satisfies CommunityPostListItem;
+
+export const inactiveCharacter = {
+  id: 202,
+  characterUUID: "character-202",
+  name: "미카",
+  imageUrl: null,
+  description: "비활성 캐릭터",
+  systemPrompt: "읽기 전용",
+  characterType: "Character",
+  age: null,
+  gender: null,
+  mbti: null,
+  speechPattern: null,
+  speechStyle: null,
+  appearance: null,
+  region: "KR",
+  isActive: false,
+  tags: [],
+  hobbies: [],
+  values: [],
+  goals: [],
+  relationships: [],
+  personalities: [],
+  backgrounds: [],
+  memories: [],
+  originalWork: null,
+} as const;
+
+export function createCapturingClient(requests: CapturedApiRequest[]): ApiClient {
+  return {
+    async request<Data>(options: ApiRequestOptions<Data>): Promise<Data> {
+      requests.push({ body: options.body, method: options.method, path: options.path });
+      if (options.method === "POST" || options.method === "PUT") {
+        return options.responseSchema.parse(null);
+      }
+
+      return options.responseSchema.parse({ totalCount: 51, page: 2, size: 50, hasNext: true, items: [contractCommunityPost] });
+    },
+  };
+}
+
+export function createSheetClient(requests: CapturedApiRequest[]): ApiClient {
+  return {
+    async request<Data>(options: ApiRequestOptions<Data>): Promise<Data> {
+      if (options.path.includes("/comments")) {
+        return options.responseSchema.parse({ totalCount: 0, items: [] });
+      }
+      requests.push({ body: options.body, method: options.method, path: options.path });
+
+      return options.responseSchema.parse(null);
+    },
+  };
+}
+
+export function createCropSource(file: File): Promise<CropSourceImage> {
+  return Promise.resolve({ file, height: 600, previewUrl: "blob:sheet", width: 800 });
+}
+
+export function requireFormData(body: BodyInit | null | undefined): FormData {
+  if (body instanceof FormData) {
+    return body;
+  }
+
+  throw new TypeError("Expected FormData body");
+}
+
+export async function readJsonPart(part: FormDataEntryValue | null): Promise<unknown> {
+  if (part instanceof Blob) {
+    return JSON.parse(await part.text());
+  }
+  if (typeof part === "string") {
+    return JSON.parse(part);
+  }
+
+  return null;
+}
+
+export function requireData<Data>(data: Data | null): Data {
+  if (data === null) {
+    throw new Error("response data missing");
+  }
+
+  return data;
+}
+
+export function authorizedFetch(path: string, init: RequestInit = {}) {
+  return fetch(`${apiBaseUrl}${path}`, {
+    ...init,
+    headers: { Authorization: "Bearer mock-admin-jwt", ...init.headers },
+  });
+}
+
+export function multipartInit(method: "POST" | "PUT", request: object, filePartNames: readonly string[] = []): RequestInit {
+  const boundary = "test-boundary";
+  const fileParts = filePartNames.map((name) => `--${boundary}\r\nContent-Disposition: form-data; name="${name}"; filename="${name}.bin"\r\nContent-Type: application/octet-stream\r\n\r\nfile\r\n`).join("");
+
+  return {
+    headers: { "Content-Type": `multipart/form-data; boundary=${boundary}` },
+    method,
+    body: `${fileParts}--${boundary}\r\nContent-Disposition: form-data; name="request"\r\nContent-Type: application/json\r\n\r\n${JSON.stringify(request)}\r\n--${boundary}--\r\n`,
+  };
+}
+
+export function multipartRawInit(method: "POST" | "PUT", parts: readonly string[]): RequestInit {
+  const boundary = "test-boundary";
+
+  return {
+    headers: { "Content-Type": `multipart/form-data; boundary=${boundary}` },
+    method,
+    body: `${parts.map((part) => `--${boundary}\r\n${part}\r\n`).join("")}--${boundary}--\r\n`,
+  };
+}
+
+export function requestPart(request: object): string {
+  return `Content-Disposition: form-data; name="request"\r\nContent-Type: application/json\r\n\r\n${JSON.stringify(request)}`;
+}
+
+export function filePart(name: string): string {
+  return `Content-Disposition: form-data; name="${name}"; filename="${name}.bin"\r\nContent-Type: application/octet-stream\r\n\r\nfile`;
+}
+
+export function textPart(name: string): string {
+  return `Content-Disposition: form-data; name="${name}"\r\n\r\ntext`;
+}
+
+export function installCommunityHandlers(state: CommunitySheetState) {
+  server.use(
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts`, ({ request }) => {
+      state.requests.push(request);
+      const items = state.post === null ? [] : [state.post];
+      return HttpResponse.json({ success: true, message: null, data: { totalCount: items.length, page: 0, size: 20, hasNext: false, items }, errorProperty: null });
+    }),
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts/:postId`, ({ request }) => {
+      state.requests.push(request);
+      return HttpResponse.json({ success: false, message: "detail must not be called", data: null, errorProperty: null }, { status: 500 });
+    }),
+    http.get(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts/:postId/comments`, () => HttpResponse.json({ success: true, message: null, data: { totalCount: 0, items: [] }, errorProperty: null })),
+    http.put(`${apiBaseUrl}/api/v2/admin/ai-characters/101/community-posts/7001`, async ({ request }) => {
+      state.requests.push(request);
+      const post = state.post;
+      if (post !== null) {
+        state.mutationCount += 1;
+        if (state.mutationCount === 4) {
+          state.post = null;
+        } else {
+          state.post = {
+            ...post,
+            content: state.mutationCount === 1 ? "수정된 커뮤니티 게시글" : post.content,
+            isAdult: state.mutationCount === 1 ? true : post.isAdult,
+            isCommentAvailable: state.mutationCount === 1 ? false : post.isCommentAvailable,
+            isFixed: state.mutationCount === 2 ? true : state.mutationCount === 3 ? false : post.isFixed,
+          };
+        }
+      }
+
+      return HttpResponse.json({ success: true, message: null, data: null, errorProperty: null });
+    }),
+  );
+}
diff --git a/src/features/community-posts/validation/community-post-media-policy.ts b/src/features/community-posts/validation/community-post-media-policy.ts
new file mode 100644
index 0000000..8642d5a
--- /dev/null
+++ b/src/features/community-posts/validation/community-post-media-policy.ts
@@ -0,0 +1,70 @@
+import type { CropSourceImage } from "@/shared/ui/image-crop-dialog";
+import { getFileExtension, validateFile } from "@/shared/validation/file-validation";
+import type { FileValidationResult } from "@/shared/validation/file-validation";
+import { createImagePolicy } from "@/shared/validation/image-policy";
+
+export const COMMUNITY_POST_IMAGE_POLICY = createImagePolicy({ aspect: "free", cropRequired: true, maxWidth: 800, noUpscale: true });
+
+const communityPostImageFilePolicy = {
+  allowedExtensions: [".gif", ".jpeg", ".jpg", ".png"],
+  allowedMimeTypes: ["image/gif", "image/jpeg", "image/png"],
+  maxBytes: COMMUNITY_POST_IMAGE_POLICY.maxBytes,
+} as const;
+
+export type CommunityPostImagePrepareResult =
+  | { readonly kind: "cleared" }
+  | { readonly file: File; readonly kind: "ready" }
+  | { readonly kind: "crop"; readonly source: CropSourceImage }
+  | { readonly kind: "error"; readonly message: string };
+
+export function validateCommunityPostImageFile(file: File): FileValidationResult {
+  const result = validateFile(file, communityPostImageFilePolicy);
+  if (!result.ok) {
+    return result;
+  }
+
+  const extension = getFileExtension(file.name);
+  if ((extension === ".gif" && file.type !== "image/gif") || ((extension === ".jpg" || extension === ".jpeg") && file.type !== "image/jpeg") || (extension === ".png" && file.type !== "image/png")) {
+    return { ok: false, reason: "mime" };
+  }
+
+  return { ok: true };
+}
+
+export function communityPostImageErrorMessage(file: File): string | undefined {
+  const result = validateCommunityPostImageFile(file);
+  if (result.ok) {
+    return undefined;
+  }
+  if (result.reason === "size") {
+    return "게시글 이미지는 10MB 이하만 업로드할 수 있습니다.";
+  }
+
+  return "JPEG, PNG, GIF 파일만 업로드하세요.";
+}
+
+export function isCommunityPostGif(file: File): boolean {
+  return getFileExtension(file.name) === ".gif" && file.type === "image/gif";
+}
+
+export async function prepareCommunityPostImage(file: File | null, createCropSource: (file: File) => Promise<CropSourceImage>): Promise<CommunityPostImagePrepareResult> {
+  if (file === null) {
+    return { kind: "cleared" };
+  }
+
+  const message = communityPostImageErrorMessage(file);
+  if (message !== undefined) {
+    return { kind: "error", message };
+  }
+
+  const source = await createCropSource(file);
+  if (isCommunityPostGif(file)) {
+    const isOversized = source.width > COMMUNITY_POST_IMAGE_POLICY.maxWidth;
+    source.release?.();
+    return isOversized
+      ? { kind: "error", message: "GIF 이미지는 원본 width 800px 이하만 업로드할 수 있습니다." }
+      : { file, kind: "ready" };
+  }
+
+  return { kind: "crop", source };
+}