diff --git a/benchmark/mobilemem/README.md b/benchmark/mobilemem/README.md
new file mode 100644
index 00000000..ca10e49f
--- /dev/null
+++ b/benchmark/mobilemem/README.md
@@ -0,0 +1,96 @@
+# MobileMem-Omni Visual Reasoning
+
+Evaluate ReMe Image on the published `visual_reasoning` questions using each user's complete chronological
+dialogue history. Original dialogue text, including any descriptions already in it, is retained alongside images.
+Separate summaries/captions, reference answers, evidence annotations and question types are not added to candidate Jobs.
+Native `multi_visual_reasoning` questions are not relabelled or included.
+
+## Run
+
+Install both plugins and extract the official archive without changing its images:
+
+```bash
+pip install -e ".[as]" -e plugins/mobilemem -e plugins/mobilemem-judge
+mkdir -p /path/to/omni/image
+python -m zipfile -e /path/to/omni/image.zip /path/to/omni/image
+export LLM_API_KEY="..."
+export LLM_BASE_URL="..."
+python -m benchmark.mobilemem.run --dataset /path/to/omni --output /path/to/exp-xxxx
+```
+
+[config.yaml](config.yaml) supplies defaults: `qwen3.8-max`, four concurrent users and 16 concurrent questions.
+Override them with `--model`, `--user-concurrency` and `--query-concurrency`.
+Every run creates `<output>/mobilemem/<model>` and rejects an existing directory.
+
+## Evaluation
+
+Each user has a fresh workspace. All source sessions are ingested chronologically through multimodal
+`auto_memory`, then indexed once. Every question starts a fresh 30-iteration `agentic_answer` Agent with
+BM25 `search`, `read` and `read_image`. Search covers daily notes, digest notes and original session text.
+Original Image IDs accompany source images; saved native attachments can be reopened by the answer Agent.
+
+The [candidate preset](../../plugins/mobilemem/src/reme_mobilemem/benchmark.yaml) uses the same model for memory,
+answering and compression: temperature 0, thinking enabled, 65,536 output tokens, 1,000,000-token context and
+at most 4,096 images. Native context ratios remain 0.8/0.1. Input images are not resized; MPO inputs retain
+the existing primary-picture PNG conversion. Published path aliases are resolved by unique image basename.
+
+The official QA template wraps the question with evidence-tool instructions. Only the isolated
+[MobileMem Judge](../../plugins/mobilemem-judge/README.md) receives references and evidence. Its default is the
+MemBase executable-default `mobilemem-omni-judge` rubric, `qwen3.8-max`, temperature 0, thinking disabled and
+4,096 output tokens. Scores report binary LLM-Judge accuracy and the official token-overlap F1 and BLEU-1.
+
+## Results
+
+Each user's `workspace/` retains notes, source JSONL, images and native AgentScope trajectories.
+`sessions/*.json` and `questions/*/` retain responses, judgments, metrics and technical errors.
+`summary.json` reports completed/expected questions and scores over successfully scored results only.
+Native interrupted replies and failed Jobs remain unscored technical gaps, not zero-score answers.
+The runner adds no fallback or retry queue.
+
+Usage policy version 2 counts observed successful HTTP requests, including compression and requests made before
+a candidate history or answer later fails. Memory cost comes from `sessions/*.json` and `index-response.json`;
+answer cost comes only from `answer-response.json`, including failed responses or `response: null` when a call raises.
+Successful and failed answers use this single response file; its `response.success` determines whether scoring proceeds.
+Earlier runs' `answer.json` copies, result files and response metadata are not counted again. `memory_usage.json` remains a
+completion marker: it is written only after the full history and index update succeed.
+Judge usage is excluded; absent counters stay unknown and each counter includes its observation coverage.
+The `mean_tokens_per_user` / `mean_tokens_per_question` fields amortize this run's observed cost over scheduled users /
+expected questions, with explicit denominators and attempt/completion counts. They are not successful-sample averages.
+Earlier selected-success-only reports retain their original accounting policy.
+
+Errors retain the failing stage, user/session/question identifiers, safe image paths, sanitized reasons and stack
+locations; credentials, request headers, image payloads and frame locals are omitted. Cleanup errors are separate;
+`cleanup_error_count` makes the run exit with status 2 without discarding already scored results.
+`judge-settings.json` records a credential-free whitelist of the validated Judge model, parameters and protocol,
+including an optional `JUDGE_MODEL_NAME` override, so scoring can be traced to the effective configuration.
+
+Sources: [MobileMem evaluation code](https://github.com/zjunlp/MobileMem/tree/fa5cd13c9c659699df9caf650987ba2bea8ca085/omni/eval/eval)
+and [MemBase judge](https://github.com/zjunlp/MemBase/blob/a9ba9495d48541d3e68588ff097294cc7a1201bc/membase/inference_utils/prompts.py).
+Dataset revision: `989ba00900bddf4e0d4b0c7dd52f0840a7ee3a54`.
+
+## Upstream code license
+
+The QA template and overlap metrics in `run.py` are adapted from ZJUNLP MobileMem's evaluation code at
+`fa5cd13c9c659699df9caf650987ba2bea8ca085`, under the following license.
+
+MIT License
+
+Copyright (c) 2026 ZJUNLP
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/benchmark/mobilemem/README_ZH.md b/benchmark/mobilemem/README_ZH.md
new file mode 100644
index 00000000..5b1c01a7
--- /dev/null
+++ b/benchmark/mobilemem/README_ZH.md
@@ -0,0 +1,61 @@
+# MobileMem-Omni 视觉推理评测
+
+使用每个用户完整、按时间排序的原始对话，评测 ReMe Image 在官方 `visual_reasoning` 题目上的表现。
+记忆与回答 Job 仅接收原始文本和图像，不接收数据集摘要、caption、标准答案、证据标注或题型。
+官方 `multi_visual_reasoning` 不被重命名，也不纳入这个评测范围。
+
+## 运行
+
+安装两个插件，并按原目录结构解压官方图片：
+
+```bash
+pip install -e ".[as]" -e plugins/mobilemem -e plugins/mobilemem-judge
+mkdir -p /path/to/omni/image
+python -m zipfile -e /path/to/omni/image.zip /path/to/omni/image
+export LLM_API_KEY="..."
+export LLM_BASE_URL="..."
+python -m benchmark.mobilemem.run --dataset /path/to/omni --output /path/to/exp-xxxx
+```
+
+[config.yaml](config.yaml) 默认使用 `qwen3.8-max`、4 个用户并发、16 个题目并发；
+可通过 `--model`、`--user-concurrency`、`--query-concurrency` 覆盖。
+每次运行创建 `<output>/mobilemem/<model>`，已有目录不会被覆盖。
+
+## 评测设置
+
+每个用户使用独立的新工作空间，按时间顺序通过多模态 `auto_memory` 摄入全部 session，然后更新一次索引。
+每题使用新的 `agentic_answer` Agent，最多 30 轮，工具为 BM25 `search`、`read` 和 `read_image`。
+检索范围包含 daily、digest 笔记及原始 session 正文；保存的原生图像附件与 Image ID 可供回答 Agent 重新读图。
+
+[候选模型配置](../../plugins/mobilemem/src/reme_mobilemem/benchmark.yaml) 在记忆、回答和压缩阶段使用同一模型：
+temperature 为 0，开启 thinking，输出预算 65,536，上下文为 1,000,000 token，最多 4,096 张图。
+原生上下文比例保持 0.8/0.1。输入图片不缩放；MPO 保持既有的主图 PNG 转换。
+数据集图片路径别名通过唯一 basename 对应原件。
+
+问题使用官方 QA 模板，并提示通过证据工具作答。标准答案与证据仅交给独立的
+[MobileMem Judge](../../plugins/mobilemem-judge/README.md)。默认采用 MemBase 可执行默认
+`mobilemem-omni-judge` 评分模板，模型为 `qwen3.8-max`，temperature 为 0，关闭 thinking，输出预算 4,096。
+报告包含二元 LLM-Judge 准确率及官方 token-overlap F1、BLEU-1。
+
+## 结果
+
+每个用户的 `workspace/` 保存笔记、原始 JSONL、图像及原生 AgentScope 轨迹。
+`sessions/*.json` 与 `questions/*/` 保存响应、评分、指标和技术错误。
+`summary.json` 汇总完成/应测题数，指标只对成功评分的结果求均值。
+原生中断与失败 Job 保留为未评分的技术缺口，不作为零分答案；runner 不额外加入 fallback 或重试队列。
+
+usage policy 第 2 版统计已观测的成功 HTTP 请求，包括压缩调用及摄入/回答最终失败前已经产生的请求。
+记忆成本只汇总 `sessions/*.json` 和 `index-response.json`；回答成本只汇总 `answer-response.json`，
+包括失败响应及直接异常时的 `response: null`。成功与失败的回答统一保存在这个文件中，
+根据 `response.success` 决定是否进入评分；旧运行的 `answer.json` 副本、result 和 response metadata 不重复计费。
+`memory_usage.json` 仍仅在完整历史摄入及索引更新成功后生成，不能将它误作部分摄入标记。
+Judge 用量不计入方法成本；缺失字段保持未知，并记录每个字段的观测覆盖数。
+`mean_tokens_per_user` / `mean_tokens_per_question` 是本次已观测成本按计划用户数/应测题数均摊，
+summary 明确记录分母和尝试/完成数，不代表成功样本平均成本。旧的 selected-success-only 报告不改写口径。
+
+错误记录包含失败阶段、用户/会话/题号、安全的图片相对路径、脱敏原因和调用栈位置，不保存凭据、请求 headers、
+图片载荷或 frame locals；清理错误单独保留，`cleanup_error_count` 使本轮以状态码 2 退出，但不丢弃已评分结果。
+`judge-settings.json` 从实际校验后的配置中保存 Judge 模型、参数和协议白名单，
+包括可选的 `JUDGE_MODEL_NAME` 覆盖值，不导出凭据。
+
+协议来源、数据版本和改编代码的完整 MIT 许可证见 [英文说明](README.md)。
diff --git a/benchmark/mobilemem/_audit.py b/benchmark/mobilemem/_audit.py
new file mode 100644
index 00000000..5bb1ba2f
--- /dev/null
+++ b/benchmark/mobilemem/_audit.py
@@ -0,0 +1,182 @@
+"""Small, credential-safe diagnostics and accounting helpers for this runner."""
+
+import os
+from pathlib import Path, PurePosixPath
+import re
+import traceback
+
+USAGE_POLICY = {
+    "version": 2,
+    "scope": "observed successful HTTP requests, including failed candidate flows and compression; judge excluded",
+    "memory_sources": ["users/*/sessions/*.json", "users/*/index-response.json"],
+    "answer_source": "users/*/questions/*/answer-response.json",
+    "means": "observed run cost amortized over scheduled users / expected questions, not successful samples",
+}
+_SENSITIVE = re.compile(
+    r"authorization|credential|secret|password|api.?key|private[_-]?key|cookie|headers|"
+    r"(?:^|[_-])(?:access[_-]?token|refresh[_-]?token|id[_-]?token|token)$",
+    re.I,
+)
+_USAGE_FIELDS = {
+    "usage",
+    "coverage",
+    "records",
+    "input_tokens",
+    "output_tokens",
+    "total_tokens",
+    "cached_input_tokens",
+    "noncached_input_tokens",
+    "reasoning_tokens",
+}
+
+
+def safe_text(value, limit: int = 1200) -> str:
+    """Retain short diagnostic text, without credentials, URLs or binary payloads."""
+    text = str(value)
+    for key, secret in os.environ.items():
+        if secret and (_SENSITIVE.search(key) or re.search(r"(?:^|_)TOKEN(?:$|_)", key.upper())):
+            if len(secret) < 12:
+                text = re.sub(r"(?<![\w-])" + re.escape(secret) + r"(?![\w-])", "[redacted]", text)
+            else:
+                text = text.replace(secret, "[redacted]")
+    text = re.sub(
+        r"-----BEGIN [^-]*PRIVATE KEY-----.*?-----END [^-]*PRIVATE KEY-----",
+        "[private key redacted]",
+        text,
+        flags=re.S,
+    )
+    text = re.sub(r"(?i)\b(?:request[_ -]?)?headers\s*[:=].*", "headers=[redacted]", text)
+    text = re.sub(r"(?i)\b(?:set-cookie|cookie)\s*:[^\r\n]*", "cookie: [redacted]", text)
+    text = re.sub(r"data:[^\s,;]+(?:;[^\s,]*)?,[^\s\"']+", "[image data redacted]", text, flags=re.I)
+    text = re.sub(r"https?://[^\s\"'<>]+", "[url redacted]", text, flags=re.I)
+    text = re.sub(r"(?<![\w])(?:[A-Za-z]:\\|/)[^\s\"']+", "[path redacted]", text)
+    text = re.sub(r"\b(?:Bearer|Basic)\s+[^\s,;\"'}]+", "[authorization redacted]", text, flags=re.I)
+    text = re.sub(
+        r"(?i)([\"']?(?:api[_-]?key|private[_-]?key|authorization|password|secret|access[_-]?token|"
+        r"refresh[_-]?token|id[_-]?token|token|cookie)[\"']?\s*[:=]\s*)"
+        r"(?:[\"'][^\"']*[\"']|[^\s,;}]+)",
+        r"\1[redacted]",
+        text,
+    )
+    text = re.sub(r"\b(?:sk-|sk_|ghp_|github_pat_)[A-Za-z0-9_-]+", "[key redacted]", text)
+    text = re.sub(r"[A-Za-z0-9+/=_-]{80,}", "[payload redacted]", text)
+    return text[:limit]
+
+
+def safe_value(value, depth: int = 0, *, fixed_keys=()):
+    """Sanitize failed response envelopes, never serialize arbitrary objects/locals."""
+    if depth > 6:
+        return "[nested data omitted]"
+    if isinstance(value, dict):
+        return {
+            (key if key in fixed_keys else safe_text(key, 100)): (
+                "[redacted]"
+                if _SENSITIVE.search(str(key)) or str(key).lower() in {"base64", "data", "body", "request", "traceback"}
+                else safe_value(item, depth + 1, fixed_keys=fixed_keys)
+            )
+            for key, item in list(value.items())[:50]
+        }
+    if isinstance(value, (list, tuple)):
+        return [safe_value(item, depth + 1, fixed_keys=fixed_keys) for item in value[:20]]
+    if value is None or isinstance(value, (bool, int, float)):
+        return value
+    return safe_text(value) if isinstance(value, str) else f"[{type(value).__name__} omitted]"
+
+
+def response_record(response):
+    """Keep successful response artifacts compatible; sanitize failed envelopes."""
+    if response is None:
+        return None
+    value = response.model_dump()
+    if response.success:
+        return value
+    return {
+        **safe_value({key: item for key, item in value.items() if key not in {"success", "answer", "metadata"}}),
+        "success": value["success"],
+        "answer": safe_value(value["answer"]),
+        "metadata": safe_value(value["metadata"], fixed_keys=_USAGE_FIELDS),
+    }
+
+
+def safe_image_path(source) -> str:
+    """Only retain bounded dataset-relative image identifiers in diagnostics."""
+    source = str(source)
+    path = PurePosixPath(source)
+    if not source or len(source) > 300 or path.is_absolute() or ".." in path.parts:
+        return "[invalid image path]"
+    if any(character in source for character in ("\\", ":", "\n", "\r")):
+        return "[invalid image path]"
+    return safe_text(source, 300)
+
+
+class ImageInputError(ValueError):
+    """Attach only the dataset-relative image identifier to a preprocessing error."""
+
+    def __init__(self, source, error):
+        super().__init__(safe_text(error))
+        self.image_path = safe_image_path(source)
+
+
+def error_record(error, *, stage: str, user_id=None, session_id=None, question_id=None, response=None) -> dict:
+    """Preserve stage, a bounded cause chain and stack locations, never frame locals."""
+    chain, seen = [], set()
+    current = error
+    image_path = None
+    while current is not None and id(current) not in seen and len(chain) < 5:
+        seen.add(id(current))
+        image_path = image_path or getattr(current, "image_path", None)
+        chain.append(
+            {
+                "type": type(current).__name__,
+                "reason": safe_text(current),
+                "traceback": [
+                    {"file": Path(frame.filename).name, "line": frame.lineno, "function": frame.name}
+                    for frame in traceback.extract_tb(current.__traceback__)[-12:]
+                ],
+            },
+        )
+        current = current.__cause__ or (None if current.__suppress_context__ else current.__context__)
+    reason = response.answer if response is not None and not response.success else str(error)
+    return {
+        "stage": stage,
+        "user_id": safe_text(user_id, 120) if user_id is not None else None,
+        "session_id": safe_text(session_id, 120) if session_id is not None else None,
+        "question_id": safe_text(question_id, 120) if question_id is not None else None,
+        "image_path": image_path,
+        "error_type": type(error).__name__,
+        "reason": safe_value(reason),
+        "chain": chain,
+    }
+
+
+def mean_tokens(total: dict, denominator: int) -> dict:
+    """Amortize observed counters over the explicit scheduled population."""
+    return {
+        key: total[key] / denominator if denominator and total[key] is not None else None
+        for key in ("input_tokens", "output_tokens", "total_tokens", "cached_input_tokens", "noncached_input_tokens")
+    }
+
+
+def judge_settings(app) -> dict:
+    """Export a whitelist from the validated application, not unresolved YAML/env text."""
+    from judge_mobilemem.protocol import MEMBASE_REVISION, SOURCE_REVISION, protocol_id
+
+    model = app.config.components["as_llm"]["judge"].model_dump()
+    mode = app.config.jobs["answer_judge"].model_dump().get("judge_protocol", "membase_default")
+    fields = ("backend", "model", "stream", "context_size", "max_retries", "retry_delay")
+    return {
+        **{key: safe_value(model[key]) for key in fields if key in model},
+        "parameters": {
+            key: safe_value(value)
+            for key, value in (model.get("parameters") or {}).items()
+            if key in {"temperature", "max_tokens", "thinking_enable", "top_p"}
+        },
+        "extra_body": {"enable_thinking": (model.get("extra_body") or {}).get("enable_thinking")},
+        "client_kwargs": {
+            key: value for key, value in (model.get("client_kwargs") or {}).items() if key in {"timeout", "max_retries"}
+        },
+        "protocol": protocol_id(mode),
+        "protocol_mode": mode,
+        "mobilemem_revision": SOURCE_REVISION,
+        "membase_revision": MEMBASE_REVISION,
+    }
diff --git a/benchmark/mobilemem/config.yaml b/benchmark/mobilemem/config.yaml
new file mode 100644
index 00000000..f6ff1e6d
--- /dev/null
+++ b/benchmark/mobilemem/config.yaml
@@ -0,0 +1,3 @@
+model: qwen3.8-max
+user_concurrency: 4
+query_concurrency: 16
diff --git a/benchmark/mobilemem/run.py b/benchmark/mobilemem/run.py
new file mode 100644
index 00000000..28962ab4
--- /dev/null
+++ b/benchmark/mobilemem/run.py
@@ -0,0 +1,621 @@
+"""Evaluate ReMe Image on MobileMem-Omni Visual Reasoning.
+
+Official QA and overlap metrics: Copyright (c) 2026 ZJUNLP, MIT License.
+The complete upstream notice is retained in README.md.
+"""
+
+import argparse
+import asyncio
+import base64
+from collections import Counter
+from contextlib import contextmanager
+from contextvars import ContextVar
+from datetime import datetime
+import io
+import json
+import math
+import mimetypes
+from pathlib import Path, PurePosixPath
+import re
+
+from PIL import Image, ImageOps, JpegImagePlugin
+import yaml
+
+from reme import Application
+from reme.config import resolve_app_config
+
+from benchmark.mobilemem._audit import (
+    ImageInputError,
+    USAGE_POLICY,
+    error_record,
+    judge_settings,
+    mean_tokens,
+    response_record,
+)
+
+
+def timestamp(value: str) -> str:
+    """Preserve published start-time precision in AgentScope ISO timestamps."""
+    return datetime.fromisoformat(value.replace("Z", "+00:00")).isoformat()
+
+
+def load_mobilemem(root: Path) -> list[dict]:
+    """Keep complete raw trajectories, selecting only the native visual category."""
+    root = root.expanduser().resolve()
+    records = []
+    for name in ("data.jsonl", "questions.jsonl"):
+        rows = {}
+        with (root / name).open(encoding="utf-8") as stream:
+            for line in stream:
+                if line.strip():
+                    row = json.loads(line)
+                    identity = str(row["uuid"])
+                    if identity in rows:
+                        raise ValueError(f"Duplicate MobileMem user: {identity}")
+                    rows[identity] = row
+        records.append(rows)
+    histories, questions = records
+    if set(histories) != set(questions):
+        raise ValueError("Every MobileMem user must have a trajectory and question record")
+    return [
+        {
+            "id": f"uuid_{identity}",
+            "image_root": root / "image",
+            "sessions": sorted(
+                row["sessions"],
+                key=lambda session: datetime.fromisoformat(timestamp(session["event_start_time"])),
+            ),
+            "questions": [
+                question
+                for question in questions[identity]["questions"]
+                if question["question_type"] == "visual_reasoning"
+            ],
+        }
+        for identity, row in histories.items()
+    ]
+
+
+def resolve_image(root: Path, source: str, aliases: dict) -> Path:
+    """Resolve exact paths or unique published basename aliases inside image/."""
+    root = root.resolve()
+    relative = PurePosixPath(source)
+    if relative.is_absolute() or ".." in relative.parts or "\\" in source or ":" in source:
+        raise ValueError(f"Invalid MobileMem image path: {source}")
+    parts = relative.parts[1:] if relative.parts[0] == "image" else relative.parts
+    target = (root / Path(*parts)).resolve()
+    if not target.is_relative_to(root):
+        raise ValueError(f"MobileMem image escapes image/: {source}")
+    if target.is_file():
+        return target
+    if not aliases:
+        for path in root.rglob("*"):
+            if path.is_file() and path.resolve().is_relative_to(root):
+                if (mimetypes.guess_type(path)[0] or "").startswith("image/"):
+                    aliases.setdefault(path.name, []).append(path.resolve())
+    matches = aliases.get(relative.name, [])
+    if len(matches) != 1:
+        raise ValueError(f"Missing or ambiguous MobileMem image: {source}")
+    return matches[0]
+
+
+def image_block(path: Path) -> dict:
+    """Use original bytes, or the existing lossless MPO primary-picture conversion."""
+    data = path.read_bytes()
+    if len(data) > 50 * 1024 * 1024:
+        raise ValueError(f"Oversized MobileMem image: {path.name}")
+    opener = JpegImagePlugin.JpegImageFile if data.startswith(b"\xff\xd8\xff") else Image.open
+    with opener(io.BytesIO(data)) as image:
+        mime, mpo = image.get_format_mimetype(), "mp" in image.info
+        if not mime or not mime.startswith("image/") or image.width * image.height > 50_000_000:
+            raise ValueError(f"Invalid or oversized MobileMem image: {path.name}")
+        image.verify()
+    with opener(io.BytesIO(data)) as image:
+        image.load()
+        if mpo:
+            with ImageOps.exif_transpose(image) as oriented, oriented.convert("RGB") as picture:
+                buffer = io.BytesIO()
+                picture.save(buffer, format="PNG")
+                data, mime = buffer.getvalue(), "image/png"
+    return {
+        "type": "data",
+        "source": {
+            "type": "base64",
+            "data": base64.b64encode(data).decode("ascii"),
+            "media_type": mime,
+        },
+    }
+
+
+def session_messages(session: dict, image_root: Path, aliases=None) -> list[dict]:
+    """Convert original dialogue directly; annotations never enter the candidate."""
+    aliases = {} if aliases is None else aliases
+    messages = []
+    for turn in session["dialogue"]:
+        content = [{"type": "text", "text": turn.get("content", "")}]
+        refs = turn.get("image_inline") or []
+        refs = [refs] if isinstance(refs, str) else refs
+        if turn["content_type"] == "image" and not refs:
+            raise ValueError("MobileMem image turn has no image reference")
+        for source in refs:
+            try:
+                image = image_block(resolve_image(image_root, source, aliases))
+            except Exception as error:  # pylint: disable=broad-exception-caught
+                raise ImageInputError(source, error) from error
+            content.extend(
+                [
+                    {"type": "text", "text": f"[Image ID: {source}]"},
+                    image,
+                ],
+            )
+        messages.append(
+            {
+                "id": f"{session['session_id']}:{turn['turn']}",
+                "name": turn["role"],
+                "role": turn["role"],
+                "content": content,
+                "created_at": timestamp(session["event_start_time"]),
+            },
+        )
+    return messages
+
+
+def evidence_values(question: dict) -> list[str]:
+    """Keep the official Raw2Locomo/MemBase evidence-string conversion."""
+    return [
+        str(item["explanation"]) if isinstance(item, dict) else item
+        for item in question.get("evidence", [])
+        if (isinstance(item, dict) and item.get("explanation")) or isinstance(item, str)
+    ]
+
+
+ANSWER_RULES = (
+    "Answer Rules:\n"
+    "1. If options are provided in the question, use the original option text as your answer.\n"
+    "2. For multiple-choice questions (multiple-select), select all correct options.\n"
+    "3. For open-ended questions, respond freely."
+)
+
+
+def query_prompt(question: str, context: str) -> str:
+    """Use the published Text Memory QA template verbatim."""
+    return (
+        f"Question:\n{question}\nPlease answer the question based on the following memories:\n"
+        f"{context}\n{ANSWER_RULES}"
+    )
+
+
+def tokenize(text: str) -> list[str]:
+    """Official lowercase ASCII word and individual CJK-character tokens."""
+    text = re.sub(r"[\u0000-\u002F\u003A-\u0040\u005B-\u0060\u007B-\u007E]", " ", str(text).lower())
+    return re.findall(r"[\u4e00-\u9fff]|[a-z0-9]+", text)
+
+
+def score_answer(reference: str, prediction: str) -> dict[str, float]:
+    """Official token-overlap F1 and BLEU-1."""
+    pt, rt = tokenize(prediction), tokenize(reference)
+    overlap = sum((Counter(pt) & Counter(rt)).values())
+    f1 = 1.0 if not pt and not rt else 0.0
+    if pt and rt and overlap:
+        precision, recall = overlap / len(pt), overlap / len(rt)
+        f1 = 2 * precision * recall / (precision + recall)
+    bleu = overlap / len(pt) * (math.exp(1 - len(rt) / len(pt)) if len(pt) < len(rt) else 1) if pt else 0.0
+    return {"f1": f1, "bleu_1": bleu}
+
+
+_CURRENT = ContextVar("mobilemem_usage", default=None)
+_KEYS = (
+    "input_tokens",
+    "output_tokens",
+    "total_tokens",
+    "cached_input_tokens",
+    "noncached_input_tokens",
+    "reasoning_tokens",
+)
+
+
+def normalized_usage(raw: dict) -> dict:
+    """Keep absent cache fields unknown and avoid double-counting cache subsets."""
+    incoming = raw.get("input_tokens", raw.get("prompt_tokens"))
+    outgoing = raw.get("output_tokens", raw.get("completion_tokens"))
+    total = raw.get("total_tokens")
+    if total is None and incoming is not None and outgoing is not None:
+        total = incoming + outgoing
+    cached = raw.get(
+        "cached_input_tokens",
+        raw.get("cached_tokens", (raw.get("prompt_tokens_details") or {}).get("cached_tokens")),
+    )
+    return {
+        "input_tokens": incoming,
+        "output_tokens": outgoing,
+        "total_tokens": total,
+        "cached_input_tokens": cached,
+        "noncached_input_tokens": incoming - cached if incoming is not None and cached is not None else None,
+        "reasoning_tokens": raw.get(
+            "reasoning_tokens",
+            (raw.get("completion_tokens_details") or {}).get("reasoning_tokens"),
+        ),
+    }
+
+
+def aggregate_usage(records: list[dict]) -> dict:
+    """Return totals and coverage; unavailable counters remain unknown."""
+    return {
+        key: (
+            sum(row[key] for row in records if row.get(key) is not None)
+            if any(row.get(key) is not None for row in records)
+            else None
+        )
+        for key in _KEYS
+    } | {
+        "records": sum(row.get("records", 1) for row in records),
+        "coverage": {
+            key: sum(row.get("coverage", {}).get(key, int(row.get(key) is not None)) for row in records)
+            for key in _KEYS
+        },
+    }
+
+
+@contextmanager
+def usage_scope():
+    """Attribute each successful request to its invoking async task."""
+    records = []
+    token = _CURRENT.set(records)
+    try:
+        yield records
+    finally:
+        _CURRENT.reset(token)
+
+
+def observe_usage(app) -> None:
+    """Observe lifecycle-owned non-streaming clients, including the compressor."""
+    for component in app.context.components.get("as_llm", {}).values():
+        client = getattr(getattr(component.model, "client", None), "_client", None)
+        if client is None or getattr(client, "_mobilemem_usage_observer", False):
+            continue
+        original = client.send
+
+        async def send(request, *args, _send=original, **kwargs):
+            response = await _send(request, *args, **kwargs)
+            records = _CURRENT.get()
+            if records is not None and response.status_code == 200 and response.is_stream_consumed:
+                try:
+                    raw = response.json()
+                except (ValueError, UnicodeError):
+                    raw = {}
+                usage = raw.get("usage") if isinstance(raw, dict) else None
+                records.append(normalized_usage(usage if isinstance(usage, dict) else {}))
+            return response
+
+        client.send = send
+        client._mobilemem_usage_observer = True  # pylint: disable=protected-access
+
+
+def observe_completion(app) -> None:
+    """Keep native interrupted replies unscored; successful replies are unchanged."""
+    for wrapper in app.context.components.get("agent_wrapper", {}).values():
+        original = wrapper.reply
+
+        async def reply(inputs, *args, _reply=original, **kwargs):
+            result = await _reply(inputs, *args, **kwargs)
+            last = result.get("last_message") or {}
+            if str(last.get("finished_reason")) == "interrupted" or last.get("error") is not None:
+                raise RuntimeError("Native Agent was interrupted; its state remains saved.")
+            return result
+
+        wrapper.reply = reply
+
+
+def save(path: Path, value) -> None:
+    """Write an evaluation artifact under the newly created output directory."""
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_text(json.dumps(value, ensure_ascii=False, indent=2, default=str) + "\n", encoding="utf-8")
+
+
+def candidate_config(workspace: Path, model: str) -> dict:
+    """Select one candidate model; behavioral defaults belong to the plugin preset."""
+    config = resolve_app_config(
+        config="mobilemem-benchmark",
+        plugins=["mobilemem"],
+        workspace_dir=str(workspace),
+        log_config=False,
+        enable_logo=False,
+        log_to_console=False,
+        log_to_file=True,
+        components={"as_llm": {name: {"model": model} for name in ("default", "bench", "compressor")}},
+    )
+    config["components"].pop("as_embedding", None)
+    config["components"].pop("embedding_store", None)
+    return config
+
+
+def judge_config(workspace: Path) -> dict:
+    """Keep scoring separate from candidate memory, model and evidence tools."""
+    return {
+        "plugins": ["mobilemem-judge"],
+        "service": {"backend": "http"},
+        "workspace_dir": str(workspace),
+        "enable_logo": False,
+        "log_to_console": False,
+        "log_to_file": True,
+    }
+
+
+def check_response(response):
+    """Keep failed Jobs as technical errors rather than incorrect predictions."""
+    if response.metadata.get("cancelled"):
+        raise asyncio.CancelledError("ReMe Job cancelled")
+    if not response.success:
+        raise RuntimeError("ReMe Job failed; see the saved response artifact.")
+    return response
+
+
+async def close_application(app, directory, *, user_id=None):
+    """Finish owned cleanup; keep its diagnostics separate from the primary failure."""
+    if app is None:
+        return
+    closing = asyncio.create_task(app.close())
+    try:
+        await asyncio.shield(closing)
+    except asyncio.CancelledError as cancellation:
+        if closing.cancelled():
+            save(directory / "cleanup-error.json", error_record(cancellation, stage="cleanup", user_id=user_id))
+            return
+        try:
+            await closing
+        except (Exception, asyncio.CancelledError) as error:  # pylint: disable=broad-exception-caught
+            save(directory / "cleanup-error.json", error_record(error, stage="cleanup", user_id=user_id))
+        raise
+    except Exception as error:  # pylint: disable=broad-exception-caught
+        save(directory / "cleanup-error.json", error_record(error, stage="cleanup", user_id=user_id))
+
+
+async def gather_tasks(coroutines) -> None:
+    """Wait for owned tasks, cancelling and joining siblings on failure or cancellation."""
+    tasks = [asyncio.create_task(coroutine) for coroutine in coroutines]
+    try:
+        await asyncio.gather(*tasks)
+    finally:
+        for task in tasks:
+            if not task.done():
+                task.cancel()
+        await asyncio.gather(*tasks, return_exceptions=True)
+
+
+async def evaluate_user(scene, directory: Path, model: str, judge, query_slots) -> None:
+    """Ingest the complete chronological history into one fresh user workspace."""
+    app, response, session_id = None, None, None
+    stage = "startup"
+    completed = 0
+    memory_usage, aliases = [], {}
+    try:
+        app = Application(**candidate_config(directory / "workspace", model))
+        await app.start()
+        observe_usage(app)
+        observe_completion(app)
+        for ordinal, session in enumerate(scene["sessions"]):
+            session_id, response = session["session_id"], None
+            stage = "preprocessing"
+            with usage_scope() as measured:
+                try:
+                    messages = await asyncio.to_thread(session_messages, session, scene["image_root"], aliases)
+                    stage = "memory"
+                    response = await app.run_job(
+                        "auto_memory",
+                        messages=messages,
+                        session_id=session_id,
+                        date=timestamp(session["event_start_time"])[:10],
+                        include_images=True,
+                        include_source_sessions=True,
+                    )
+                    check_response(response)
+                finally:
+                    save(
+                        directory / "sessions" / f"{ordinal:05d}.json",
+                        {
+                            "session_id": session_id,
+                            "response": response_record(response),
+                            "usage": aggregate_usage(measured),
+                        },
+                    )
+            memory_usage.extend(measured)
+            print(f"{scene['id']}: session {ordinal + 1}/{len(scene['sessions'])}", flush=True)
+        stage, session_id, response = "index", None, None
+        with usage_scope() as measured:
+            try:
+                response = await app.run_job("index_update")
+                check_response(response)
+            finally:
+                save(
+                    directory / "index-response.json",
+                    {"response": response_record(response), "usage": aggregate_usage(measured)},
+                )
+        memory_usage.extend(measured)
+        # Compatibility marker: never write this for a partial history or failed index.
+        save(directory / "memory_usage.json", aggregate_usage(memory_usage))
+
+        async def answer_question(ordinal, question):
+            nonlocal completed
+            question_dir = directory / "questions" / f"{ordinal:04d}"
+            answer_stage, answer_response = "answer", None
+            try:
+                async with query_slots:
+                    with usage_scope() as measured:
+                        try:
+                            answer_response = await app.run_job(
+                                "agentic_answer",
+                                query=query_prompt(question["question"], "Use the available evidence tools."),
+                                include_images=True,
+                                include_source_sessions=True,
+                                max_iters=30,
+                            )
+                            check_response(answer_response)
+                        finally:
+                            answer_record = {
+                                "question_id": question["question_id"],
+                                "response": response_record(answer_response),
+                                "usage": aggregate_usage(measured),
+                            }
+                            save(question_dir / "answer-response.json", answer_record)
+                    prediction = answer_response.answer
+                    answer_stage, answer_response = "judge", None
+                    try:
+                        answer_response = await judge.run_job(
+                            "answer_judge",
+                            question=question["question"],
+                            reference=question["answer"],
+                            prediction=prediction,
+                            evidence=evidence_values(question),
+                        )
+                        check_response(answer_response)
+                    finally:
+                        save(question_dir / "judge.json", response_record(answer_response))
+                answer_stage = "metrics"
+                metrics = score_answer(question["answer"], prediction)
+                metrics["llm_judge"] = answer_response.metadata["llm_judge_score"]
+                result = {
+                    "question_id": question["question_id"],
+                    "category": question["question_type"],
+                    "question": question["question"],
+                    "reference": question["answer"],
+                    "prediction": prediction,
+                    "metrics": metrics,
+                    "usage": aggregate_usage(measured),
+                    "judge_parse_default_zero": answer_response.metadata["parse_default_zero"],
+                }
+                save(question_dir / "result.json", result)
+                completed += 1
+                print(f"{scene['id']}: {question['question_id']} completed", flush=True)
+            except (Exception, asyncio.CancelledError) as error:  # pylint: disable=broad-exception-caught
+                save(
+                    question_dir / "error.json",
+                    error_record(
+                        error,
+                        stage=answer_stage,
+                        user_id=scene["id"],
+                        question_id=question["question_id"],
+                        response=answer_response,
+                    ),
+                )
+                if isinstance(error, asyncio.CancelledError):
+                    raise
+                print(f"{scene['id']}: {question['question_id']} failed ({type(error).__name__})", flush=True)
+
+        stage, response = "answers", None
+        await gather_tasks(answer_question(i, question) for i, question in enumerate(scene["questions"]))
+    except (Exception, asyncio.CancelledError) as error:  # pylint: disable=broad-exception-caught
+        save(
+            directory / "error.json",
+            error_record(error, stage=stage, user_id=scene["id"], session_id=session_id, response=response),
+        )
+        if isinstance(error, asyncio.CancelledError):
+            raise
+        print(f"{scene['id']}: {stage} failed ({type(error).__name__})", flush=True)
+    finally:
+        try:
+            await close_application(app, directory, user_id=scene["id"])
+        finally:
+            save(directory / "summary.json", {"completed": completed, "expected": len(scene["questions"])})
+
+
+def summarize_run(scenes, output: Path, model: str) -> dict:
+    """Read each canonical receipt/result once, including a run interrupted after partial progress."""
+    expected = sum(len(scene["questions"]) for scene in scenes)
+    rows = [json.loads(path.read_text(encoding="utf-8")) for path in output.glob("users/*/questions/*/result.json")]
+    sessions = [json.loads(path.read_text(encoding="utf-8")) for path in output.glob("users/*/sessions/*.json")]
+    indexes = [json.loads(path.read_text(encoding="utf-8")) for path in output.glob("users/*/index-response.json")]
+    memory = [row["usage"] for row in sessions + indexes]
+    answers = [
+        json.loads(path.read_text(encoding="utf-8")) for path in output.glob("users/*/questions/*/answer-response.json")
+    ]
+    answer_usage = [row["usage"] for row in answers]
+    total = aggregate_usage(memory + answer_usage)
+    summary = {
+        "model": model,
+        "completed": len(rows),
+        "expected": expected,
+        "metrics": {
+            key: sum(row["metrics"][key] for row in rows) / len(rows) if rows else None
+            for key in ("f1", "bleu_1", "llm_judge")
+        },
+        "memory_usage": aggregate_usage(memory),
+        "answer_usage": aggregate_usage(answer_usage),
+        "token_usage": total,
+        "usage_policy": USAGE_POLICY,
+        "cleanup_error_count": len(list(output.glob("users/*/cleanup-error.json")))
+        + int((output / "cleanup-error.json").exists()),
+        "usage_denominators": {"scheduled_users": len(scenes), "expected_questions": expected},
+        "usage_counts": {
+            "attempted_users": len(list(output.glob("users/*/summary.json"))),
+            "attempted_sessions": len(sessions),
+            "successful_sessions": sum(bool((row.get("response") or {}).get("success")) for row in sessions),
+            "completed_ingestion_users": len(list(output.glob("users/*/memory_usage.json"))),
+            "attempted_answers": len(answers),
+            "successful_answers": sum(bool((row.get("response") or {}).get("success")) for row in answers),
+            "scored_questions": len(rows),
+        },
+        "mean_tokens_per_user": mean_tokens(total, len(scenes)),
+        "mean_tokens_per_question": mean_tokens(total, expected),
+        "judge_parse_default_zero": sum(row["judge_parse_default_zero"] for row in rows),
+    }
+    save(output / "summary.json", summary)
+    return summary
+
+
+async def run(scenes, output: Path, model: str, user_concurrency: int, query_concurrency: int) -> bool:
+    """Run independent users concurrently and save official metrics plus method cost."""
+    judge = None
+    user_slots, query_slots = asyncio.Semaphore(user_concurrency), asyncio.Semaphore(query_concurrency)
+    try:
+        judge = Application(**judge_config(output / "judge-workspace"))
+        save(output / "judge-settings.json", judge_settings(judge))
+        await judge.start()
+
+        async def user_job(scene):
+            async with user_slots:
+                await evaluate_user(scene, output / "users" / scene["id"], model, judge, query_slots)
+
+        await gather_tasks(user_job(scene) for scene in scenes)
+    except (Exception, asyncio.CancelledError) as error:  # pylint: disable=broad-exception-caught
+        save(output / "error.json", error_record(error, stage="run"))
+        raise
+    finally:
+        try:
+            await close_application(judge, output)
+        finally:
+            summary = summarize_run(scenes, output, model)
+    print(json.dumps(summary, ensure_ascii=False, indent=2), flush=True)
+    return summary["completed"] == summary["expected"] and summary["cleanup_error_count"] == 0
+
+
+def main() -> int:
+    """Create a fresh evaluation; the PR reproduces ReMe Image only."""
+    defaults = yaml.safe_load(Path(__file__).with_name("config.yaml").read_text(encoding="utf-8"))
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--dataset", type=Path, required=True)
+    parser.add_argument("--output", type=Path, required=True)
+    parser.add_argument("--model", default=defaults["model"])
+    parser.add_argument("--user-concurrency", type=int, default=defaults["user_concurrency"])
+    parser.add_argument("--query-concurrency", type=int, default=defaults["query_concurrency"])
+    args = parser.parse_args()
+    if min(args.user_concurrency, args.query_concurrency) < 1:
+        parser.error("Concurrency must be positive")
+    scenes = load_mobilemem(args.dataset)
+    output = args.output.expanduser().resolve() / "mobilemem" / args.model
+    output.mkdir(parents=True, exist_ok=False)
+    save(
+        output / "settings.json",
+        {
+            "dataset": str(args.dataset.expanduser().resolve()),
+            "model": args.model,
+            "candidate": "mobilemem-benchmark",
+            "judge": "mobilemem-judge",
+            "question_type": "visual_reasoning",
+            "user_concurrency": args.user_concurrency,
+            "query_concurrency": args.query_concurrency,
+        },
+    )
+    return 0 if asyncio.run(run(scenes, output, args.model, args.user_concurrency, args.query_concurrency)) else 2
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/plugins/mobilemem-judge/LICENSE-CODE b/plugins/mobilemem-judge/LICENSE-CODE
new file mode 100644
index 00000000..e213f97f
--- /dev/null
+++ b/plugins/mobilemem-judge/LICENSE-CODE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 ZJUNLP
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/plugins/mobilemem-judge/README.md b/plugins/mobilemem-judge/README.md
new file mode 100644
index 00000000..65faee79
--- /dev/null
+++ b/plugins/mobilemem-judge/README.md
@@ -0,0 +1,29 @@
+# ReMe MobileMem Judge
+
+Independent `answer_judge` Job for saved MobileMem-Omni predictions. Install with
+`pip install -e plugins/mobilemem-judge` and enable `mobilemem-judge` in a separate
+evaluation application/workspace, not the candidate memory application.
+
+Inputs are `question`, `reference`, `prediction`, and optional `evidence` (a list
+of original evidence values). `judge_protocol` defaults to `membase_default`, the
+executable MemBase rubric used by this benchmark. `native_strict` selects the
+separately published strict rubric. Their protocol identifiers remain distinct.
+
+Both modes retain the official input interpolation, WRONG-first verdict parsing,
+and default-zero handling of successful responses without a valid label.
+`response.metadata` contains `llm_judge_score`, `label`, `parse_default_zero`,
+`default_judge_protocol`, `prompt`, `raw_response`, and `usage`. Provider errors
+remain failed Jobs. Judge usage is evaluation cost, not method cost.
+
+Defaults are `qwen3.8-max`, temperature 0, thinking disabled and 4,096 output tokens.
+`JUDGE_MODEL_NAME` can override the Judge model independently of the candidate.
+Candidate methods and their workspaces are not dependencies of this plugin.
+The benchmark runner invokes this Job in a separate application and saves its
+prompt, provider output and verdict alongside the candidate prediction. Its
+`judge-settings.json` records the validated model, generation/retry settings and
+protocol identifier through a credential-free whitelist, rather than recording
+only the default model name.
+
+Sources: [MemBase executable judge](https://github.com/zjunlp/MemBase/blob/a9ba9495d48541d3e68588ff097294cc7a1201bc/membase/inference_utils/prompts.py)
+and [MobileMem published strict rubric](https://github.com/zjunlp/MobileMem/blob/fa5cd13c9c659699df9caf650987ba2bea8ca085/omni/eval/eval/question_answering_and_judge_prompts.txt).
+The upstream prompt/parser code retains its MIT notice in `LICENSE-CODE`.
diff --git a/plugins/mobilemem-judge/pyproject.toml b/plugins/mobilemem-judge/pyproject.toml
new file mode 100644
index 00000000..c9b03c05
--- /dev/null
+++ b/plugins/mobilemem-judge/pyproject.toml
@@ -0,0 +1,22 @@
+[project]
+name = "reme-mobilemem-judge"
+version = "0.1.0"
+description = "Official MobileMem-Omni judge protocols as an independent ReMe plugin."
+readme = "README.md"
+license = "Apache-2.0"
+requires-python = ">=3.11"
+dependencies = ["reme-ai[as]>=0.4.1.11"]
+
+[project.entry-points."reme.plugins"]
+mobilemem-judge = "judge_mobilemem"
+
+[tool.setuptools.packages.find]
+where = ["src"]
+include = ["judge_mobilemem*"]
+
+[tool.setuptools.package-data]
+judge_mobilemem = ["plugin.yaml"]
+
+[build-system]
+requires = ["setuptools>=77", "wheel"]
+build-backend = "setuptools.build_meta"
diff --git a/plugins/mobilemem-judge/src/judge_mobilemem/__init__.py b/plugins/mobilemem-judge/src/judge_mobilemem/__init__.py
new file mode 100644
index 00000000..f243bdb5
--- /dev/null
+++ b/plugins/mobilemem-judge/src/judge_mobilemem/__init__.py
@@ -0,0 +1,5 @@
+"""Independent MobileMem evaluation-only plugin."""
+
+from .llm_judge import MobileMemJudgeStep
+
+__all__ = ["MobileMemJudgeStep"]
diff --git a/plugins/mobilemem-judge/src/judge_mobilemem/llm_judge.py b/plugins/mobilemem-judge/src/judge_mobilemem/llm_judge.py
new file mode 100644
index 00000000..8b11ca7d
--- /dev/null
+++ b/plugins/mobilemem-judge/src/judge_mobilemem/llm_judge.py
@@ -0,0 +1,43 @@
+"""Official MobileMem binary judge as an isolated ReMe Job."""
+
+from dataclasses import asdict
+
+from agentscope.message import UserMsg
+
+from reme.steps.base_step import BaseStep
+from reme.steps.evolve.compressor import CompressorStep
+
+from .protocol import judge_prompt, parse_judge, protocol_id
+
+
+class MobileMemJudgeStep(BaseStep):
+    """Score saved predictions without accessing the candidate memory or tools."""
+
+    async def execute(self):
+        """Apply the unchanged benchmark prompt and verdict parser."""
+        mode = self.context.get("judge_protocol", "membase_default")
+        prompt = judge_prompt(
+            self.context["question"],
+            self.context["reference"],
+            self.context["prediction"],
+            self.context.get("evidence", ()),
+            judge_protocol=mode,
+        )
+        response = await self.as_llm([UserMsg(name="user", content=prompt)])
+        if hasattr(type(response), "__aiter__"):
+            last = None
+            async for chunk in response:
+                last = chunk
+            response = last
+        raw = await CompressorStep._response_text(response)  # pylint: disable=protected-access
+        parsed = parse_judge(raw)
+        self.context.response.success = True
+        self.context.response.answer = str(parsed["llm_judge_score"])
+        self.context.response.metadata.update(
+            **parsed,
+            default_judge_protocol=protocol_id(mode),
+            prompt=prompt,
+            raw_response=raw,
+            usage=asdict(response.usage) if response is not None and response.usage is not None else None,
+        )
+        return self.context.response
diff --git a/plugins/mobilemem-judge/src/judge_mobilemem/plugin.yaml b/plugins/mobilemem-judge/src/judge_mobilemem/plugin.yaml
new file mode 100644
index 00000000..73b17a10
--- /dev/null
+++ b/plugins/mobilemem-judge/src/judge_mobilemem/plugin.yaml
@@ -0,0 +1,40 @@
+backends:
+  mobilemem_judge_step: judge_mobilemem.llm_judge:MobileMemJudgeStep
+
+application_defaults:
+  jobs:
+    answer_judge:
+      backend: base
+      description: "MobileMem-Omni official judge protocol for a saved prediction"
+      parameters:
+        type: object
+        properties:
+          question: {type: string}
+          reference: {type: string}
+          prediction: {type: string}
+          evidence: {type: array, default: []}
+          judge_protocol:
+            type: string
+            enum: [membase_default, native_strict]
+            default: membase_default
+        required: [question, reference, prediction]
+      steps:
+        - backend: mobilemem_judge_step
+          as_llm: judge
+  components:
+    as_llm:
+      judge:
+        backend: openai
+        model: ${JUDGE_MODEL_NAME:-qwen3.8-max}
+        stream: false
+        max_retries: 3
+        retry_delay: 60
+        client_kwargs: {timeout: 600, max_retries: 0}
+        credential:
+          api_key: ${LLM_API_KEY:-}
+          base_url: ${LLM_BASE_URL:-}
+        extra_body: {enable_thinking: false}
+        parameters:
+          temperature: 0
+          thinking_enable: false
+          max_tokens: 4096
diff --git a/plugins/mobilemem-judge/src/judge_mobilemem/protocol.py b/plugins/mobilemem-judge/src/judge_mobilemem/protocol.py
new file mode 100644
index 00000000..c2ba851f
--- /dev/null
+++ b/plugins/mobilemem-judge/src/judge_mobilemem/protocol.py
@@ -0,0 +1,118 @@
+"""Unchanged MobileMem/MemBase judge prompts and binary parser.
+
+Adapted from ZJUNLP's MobileMem and MemBase revisions below.
+MIT License, Copyright (c) 2026 ZJUNLP; see LICENSE-CODE.
+"""
+
+import json
+import re
+from string import Template
+
+SOURCE_REVISION = "fa5cd13c9c659699df9caf650987ba2bea8ca085"
+MEMBASE_REVISION = "a9ba9495d48541d3e68588ff097294cc7a1201bc"
+PROTOCOL_ID = "mobilemem-omni-membase-default-judge-v1"
+STRICT_PROTOCOL_ID = "mobilemem-omni-final-memory-native-v1"
+TEMPLATE_NAME = "mobilemem-omni-judge"
+SOURCE_URL = f"https://github.com/zjunlp/MemBase/blob/{MEMBASE_REVISION}/membase/inference_utils/prompts.py"
+JUDGE_TEMPLATE = (
+    "Your task is to classify an answer to a question as CORRECT or WRONG. "
+    "You are given a question, a gold answer, a generated answer, and optional "
+    "evidence from the user's prior conversations.\n\n"
+    "GRADING RULES:\n"
+    "1. The generated answer must include every key element in the gold answer.\n"
+    "2. Unsupported or irrelevant content that changes the meaning makes the answer WRONG.\n"
+    "3. Equivalent date formats are acceptable when they refer to the same time.\n"
+    "4. Use the evidence only to verify the answer; do not infer unsupported facts.\n\n"
+    "Question: $question\n"
+    "Gold answer: $golden_answers\n"
+    "Evidence: $evidence\n"
+    "Generated answer: $prediction\n\n"
+    'Return exactly one JSON object: {"label": "CORRECT"} or '
+    '{"label": "WRONG"}.'
+)
+STRICT_JUDGE_TEMPLATE = (
+    "Your task is to classify an answer to a question as CORRECT or WRONG. "
+    "You will be provided with the following information:\n"
+    "(1) A question (asked by a user to an AI assistant);\n"
+    "(2) A gold (ground truth) answer;\n"
+    "(3) A generated answer;\n"
+    "(4) A set of evidence sentences relevant to the question, which may be used to verify the generated answer.\n"
+    "The question focuses on information that an AI assistant should recall about the user "
+    "based on prior conversations. "
+    "The gold answer is typically concise and includes all key facts.\n\n"
+    "GRADING RULES (Must Be Strictly Followed)\n"
+    "1. COMPLETE COVERAGE REQUIRED: The generated answer must include every key element present in the gold answer. "
+    "Missing any required fact results in a WRONG classification.\n"
+    "2. NO REDUNDANT CONTENT: Including excessive or irrelevant details not supported by the evidence or gold answer "
+    "results in a WRONG classification.\n"
+    "3. TIME-RELATED QUESTIONS: Different date formats (e.g., May 7th vs. 7 May) are acceptable "
+    "as long as the same date or time period is referenced.\n\n"
+    "INSTRUCTIONS FOR THIS TASK\n"
+    "Use the provided evidence only as supporting context for verification when available. "
+    "Do not infer facts that are not present in the question, gold answer, or evidence.\n"
+    "First, provide a brief (one-sentence) explanation of your reasoning. Then, output the label CORRECT or WRONG.\n"
+    "Do not include both labels in your response, as this will break the evaluation script.\n"
+    "Return the label in JSON format with the key label.\n\n"
+    "QUESTION TO EVALUATE\n"
+    "Question: [Question]\n"
+    "Gold answer: [Gold Answer]\n"
+    "Evidence: [Evidences]\n"
+    "Generated answer: [Generated Answer]"
+)
+
+
+def protocol_id(judge_protocol: str) -> str:
+    """Identify the selected rubric without silently substituting another."""
+    if judge_protocol == "membase_default":
+        return PROTOCOL_ID
+    if judge_protocol == "native_strict":
+        return STRICT_PROTOCOL_ID
+    raise ValueError(f"Unsupported MobileMem judge protocol: {judge_protocol!r}")
+
+
+def judge_prompt(
+    question: str,
+    reference: str,
+    prediction: str,
+    evidence=(),
+    *,
+    judge_protocol="membase_default",
+) -> str:
+    """Preserve native single-pass substitution and untrimmed evidence."""
+    protocol_id(judge_protocol)
+    evidence_text = "\n".join(str(item) for item in evidence) or "Not provided."
+    if judge_protocol == "membase_default":
+        return Template(JUDGE_TEMPLATE).substitute(
+            question=question,
+            golden_answers=reference,
+            evidence=evidence_text,
+            prediction=prediction,
+        )
+    replacements = {
+        "[Question]": question,
+        "[Gold Answer]": reference,
+        "[Evidences]": evidence_text,
+        "[Generated Answer]": prediction,
+    }
+    return re.sub(
+        r"\[Question\]|\[Gold Answer\]|\[Evidences\]|\[Generated Answer\]",
+        lambda match: replacements[match[0]],
+        STRICT_JUDGE_TEMPLATE,
+    )
+
+
+def parse_judge(text: str) -> dict:
+    """Preserve MemBase's WRONG-first binary parsing and native default zero."""
+    text = text.strip()
+    try:
+        parsed = json.loads(text)
+        label = str(parsed.get("label", ""))
+    except (json.JSONDecodeError, AttributeError):
+        label = text
+    normalised = label.strip().upper()
+    score = 0.0 if "WRONG" in normalised else float("CORRECT" in normalised)
+    return {
+        "llm_judge_score": score,
+        "label": "CORRECT" if score else "WRONG",
+        "parse_default_zero": "WRONG" not in normalised and "CORRECT" not in normalised,
+    }
diff --git a/plugins/mobilemem/README.md b/plugins/mobilemem/README.md
new file mode 100644
index 00000000..268e4de7
--- /dev/null
+++ b/plugins/mobilemem/README.md
@@ -0,0 +1,17 @@
+# MobileMem plugin
+
+Install this plugin from the repository:
+
+```bash
+pip install -e plugins/mobilemem
+```
+
+Enable the `mobilemem` ReMe plugin for the MobileMem-Omni benchmark. Its Steps use native ReMe Auto Memory,
+source-line citations, BM25 retrieval, workspace containment, and an AgentScope bridge for the native image
+reader. The plugin installs independently of MemLens. Evaluation uses the separate
+[`mobilemem-judge`](../mobilemem-judge/README.md) plugin.
+
+The runner supplies only original dialogue messages and image attachments. Memory extraction retains dates,
+updates, personal relationships, app details and visual evidence; each question uses a fresh answer Agent. Source
+session reading and `read_image` remain scoped to that user's workspace. Supplied captions and benchmark gold
+annotations must never be passed to either Job.
diff --git a/plugins/mobilemem/pyproject.toml b/plugins/mobilemem/pyproject.toml
new file mode 100644
index 00000000..5e5461ea
--- /dev/null
+++ b/plugins/mobilemem/pyproject.toml
@@ -0,0 +1,25 @@
+[project]
+name = "reme-mobilemem"
+version = "0.1.0"
+description = "MobileMem-Omni native multimodal memory benchmark plugin for ReMe."
+readme = "README.md"
+license = "Apache-2.0"
+requires-python = ">=3.11"
+dependencies = ["reme-ai[as]>=0.4.1.11", "pillow>=10.0.0"]
+
+[project.entry-points."reme.plugins"]
+mobilemem = "reme_mobilemem"
+
+[project.entry-points."reme.configs"]
+mobilemem-benchmark = "reme_mobilemem:BENCHMARK_CONFIG"
+
+[tool.setuptools.packages.find]
+where = ["src"]
+include = ["reme_mobilemem*"]
+
+[tool.setuptools.package-data]
+reme_mobilemem = ["plugin.yaml", "*.yaml"]
+
+[build-system]
+requires = ["setuptools>=77", "wheel"]
+build-backend = "setuptools.build_meta"
diff --git a/plugins/mobilemem/src/reme_mobilemem/__init__.py b/plugins/mobilemem/src/reme_mobilemem/__init__.py
new file mode 100644
index 00000000..e9027ef5
--- /dev/null
+++ b/plugins/mobilemem/src/reme_mobilemem/__init__.py
@@ -0,0 +1,5 @@
+"""MobileMem-Omni benchmark Jobs for ReMe."""
+
+from pathlib import Path
+
+BENCHMARK_CONFIG = Path(__file__).with_name("benchmark.yaml")
diff --git a/plugins/mobilemem/src/reme_mobilemem/agentic_answer.py b/plugins/mobilemem/src/reme_mobilemem/agentic_answer.py
new file mode 100644
index 00000000..90f19510
--- /dev/null
+++ b/plugins/mobilemem/src/reme_mobilemem/agentic_answer.py
@@ -0,0 +1,136 @@
+"""Agentic BM25 answer with scene-local, optional multimodal source access."""
+
+from pathlib import Path
+from uuid import uuid4
+
+from agentscope.message import Base64Source, DataBlock, TextBlock, ToolResultState, UserMsg
+from agentscope.tool import FunctionTool, ToolChunk, Toolkit
+
+from reme.components.agent_wrapper.as_agent_wrapper import AsAgentWrapper
+from reme.steps.base_step import BaseStep
+from reme.steps.file_io._path import _check_path_permission, resolve_path
+
+
+def evidence_paths(workspace: Path, daily_dir: str, digest_dir: str, session_dir: str, sources: bool) -> list[str]:
+    """List exact allowed evidence files, never agent state, settings, or another workspace."""
+    roots = [(daily_dir, "*.md"), (digest_dir, "*.md")]
+    if sources:
+        roots.append((f"{session_dir}/dialog", "*.jsonl"))
+    workspace = workspace.resolve()
+    paths = []
+    for directory, pattern in roots:
+        root = (workspace / directory).resolve()
+        if not root.is_relative_to(workspace):
+            raise ValueError("Evidence directory must stay inside this scene workspace")
+        for path in sorted(root.rglob(pattern)):
+            if path.is_file() and path.resolve().is_relative_to(root):
+                paths.append(path.relative_to(workspace).as_posix())
+    return paths
+
+
+def image_reader(step: BaseStep) -> FunctionTool:
+    """Bridge the native read_image Job response to an AgentScope image result."""
+    workspace = step.workspace_path.resolve()
+    image_directory = f"{step.config_value('session_dir')}/images"
+
+    async def read_image(path: str) -> ToolChunk:
+        """View an image using its session/images path cited in a memory note."""
+        target, error = resolve_path(workspace, path)
+        if error or target is None or not _check_path_permission(workspace, target, [image_directory]):
+            return ToolChunk(
+                content=[TextBlock(text=error or "Image path must stay inside this scene's session image directory.")],
+                state=ToolResultState.ERROR,
+            )
+        relative = target.relative_to(workspace).as_posix()
+        response = await step.run_job("read_image", path=relative)
+        metadata = response.metadata
+        media_type = metadata.get("mime", "")
+        if (
+            not response.success
+            or metadata.get("oversized")
+            or metadata.get("non_image_warning")
+            or not media_type.startswith("image/")
+        ):
+            notice = str(response.answer) if not response.success or metadata.get("oversized") else "Not an image file."
+            return ToolChunk(content=[TextBlock(text=notice)], state=ToolResultState.ERROR)
+        image = DataBlock(source=Base64Source(media_type=media_type, data=response.answer))
+        return ToolChunk(content=[TextBlock(text=f"Image source: {relative}"), image], state=ToolResultState.SUCCESS)
+
+    return FunctionTool(func=read_image, name="read_image", is_concurrency_safe=True, is_read_only=True)
+
+
+class MobileMemAgenticAnswerStep(BaseStep):
+    """Run a fresh Agent for each question, with the official answer prompt unchanged."""
+
+    async def execute(self):
+        """Answer through a fresh, scene-scoped Agent and its allowed tools."""
+        wrapper = self.agent_wrapper
+        if not isinstance(wrapper, AsAgentWrapper):
+            raise NotImplementedError("MobileMem agentic_answer requires the AgentScope wrapper")
+        query = self.context.get("query", "")
+        if not query:
+            raise ValueError("query must contain the benchmark answer prompt")
+        max_iters = self.context.get("max_iters", 30)
+        if isinstance(max_iters, bool) or not isinstance(max_iters, int) or max_iters < 1:
+            raise ValueError("max_iters must be a positive integer")
+        sources = bool(self.context.get("include_source_sessions", True))
+        images = bool(self.context.get("include_images", False))
+        paths = evidence_paths(
+            self.workspace_path,
+            self.config_value("daily_dir"),
+            self.config_value("digest_dir"),
+            self.config_value("session_dir"),
+            sources,
+        )
+        tool_context_id = f"mobilemem_answer_{uuid4().hex}"
+        tools = []
+        if images:
+            tools.append(image_reader(self))
+        injected = {
+            "_allowed_paths": paths,
+            "read_step_format_session": True,
+            "search_filter": {"paths": paths},
+            "vector_weight": 0.0,
+        }
+        # Standard ReMe job tools keep their normal file handling and lifecycle.
+        tools.extend(
+            wrapper._make_tool(job, tool_context_id, injected)  # pylint: disable=protected-access
+            for job in wrapper._resolve_job_tools(["search", "read"])  # pylint: disable=protected-access
+        )
+        blocks = [TextBlock(text=query)]
+        blocks.extend(DataBlock.model_validate(block) for block in self.context.get("query_images", []))
+        if any(not block.source.media_type.startswith("image/") for block in blocks[1:]):
+            raise ValueError("query_images accepts image DataBlocks only")
+        prompt = self.get_prompt("system_prompt")
+        if query_time := self.context.get("query_time"):
+            prompt += f"\nQuestion time: {query_time}"
+        if images:
+            prompt += (
+                "\nUse read_image(path=...) for the session/images paths cited in memory, including source_images."
+            )
+        else:
+            prompt += "\nHistory images cannot be reopened in this setting."
+        try:
+            result = await wrapper.reply(
+                UserMsg(name="user", content=blocks),
+                system_prompt=prompt,
+                toolkit=Toolkit(tools=tools),
+                job_tools=[],
+                builtin_tools=False,
+                session_id=str(uuid4()),
+                resume="",
+                react_config={"max_iters": max_iters},
+            )
+            self.context.response.answer = (result.get("result") or "").strip()
+            self.context.response.metadata.update(
+                usage=result.get("usage"),
+                agentscope_usage=(result.get("last_message") or {}).get("usage"),
+                agent_session_id=result.get("session_id"),
+                include_source_sessions=sources,
+                include_images=images,
+                max_iters=max_iters,
+            )
+        finally:
+            if self.app_context is not None:
+                self.app_context.metadata.get("tool_contexts", {}).pop(tool_context_id, None)
+        return self.context.response
diff --git a/plugins/mobilemem/src/reme_mobilemem/agentic_answer.yaml b/plugins/mobilemem/src/reme_mobilemem/agentic_answer.yaml
new file mode 100644
index 00000000..661c9f20
--- /dev/null
+++ b/plugins/mobilemem/src/reme_mobilemem/agentic_answer.yaml
@@ -0,0 +1,8 @@
+system_prompt: |
+  Answer the supplied MobileMem question from this user's saved memories and original source conversations.
+  Search for the relevant people, events, dates and distinctive details, then read the source files or exact line
+  ranges when additional context is needed. Distinguish changes over time and similar events. When read_image is
+  available, reopen cited session/images paths to verify visual details rather than guessing them from an ID.
+  Use another evidence search when the first result is incomplete. Follow the supplied benchmark answer rules.
+  Include all facts needed to answer the question, without unsupported or irrelevant details. Do not include the
+  retrieval process or tool transcript in the final answer.
diff --git a/plugins/mobilemem/src/reme_mobilemem/auto_memory.py b/plugins/mobilemem/src/reme_mobilemem/auto_memory.py
new file mode 100644
index 00000000..3c3c5dcc
--- /dev/null
+++ b/plugins/mobilemem/src/reme_mobilemem/auto_memory.py
@@ -0,0 +1,34 @@
+"""MobileMem memory prompts with optional, exact source-line references."""
+
+from agentscope.message import Msg
+
+from reme.steps.evolve.auto_memory import AutoMemoryStep
+
+
+class MobileMemAutoMemoryStep(AutoMemoryStep):
+    """Keep core persistence and multimodal input, adding benchmark instructions only."""
+
+    def _format_history(self, messages: list[Msg]) -> str:
+        if not self.context.get("include_source_sessions", True):
+            return "Source-session access is disabled; record self-contained facts.\n\n" + super()._format_history(
+                messages,
+            )
+
+        # Core execute has saved the session already. Read physical line numbers
+        # rather than assuming input order equals timestamp-sorted JSONL order.
+        session_id = self.context.get("session_id", "")
+        source = self._session_source_path(session_id)
+        # File iteration keeps Unicode line separators inside JSON strings intact.
+        with self._session_path(session_id).open(encoding="utf-8") as stream:
+            lines = {Msg.model_validate_json(line).id: number for number, line in enumerate(stream, 1) if line.strip()}
+        turns = [
+            f"[L{lines[msg.id]} | {msg.name or msg.role} @ {msg.created_at}]\n{msg.get_text_content() or ''}"
+            for msg in messages
+        ]
+        return (
+            f"Source file: {source}\n"
+            f"Cite useful evidence with the full source path, for example [[{source}#L1-L2]], "
+            "replacing the line range with the actual physical lines below. Never use bare links such as [[L5]]. "
+            "Preserve original Image IDs alongside their facts, and retain the supplied Image source paths.\n\n"
+            + "\n\n".join(turns)
+        )
diff --git a/plugins/mobilemem/src/reme_mobilemem/auto_memory.yaml b/plugins/mobilemem/src/reme_mobilemem/auto_memory.yaml
new file mode 100644
index 00000000..7afcac59
--- /dev/null
+++ b/plugins/mobilemem/src/reme_mobilemem/auto_memory.yaml
@@ -0,0 +1,17 @@
+system_prompt: |
+  Maintain the user's long-term mobile memory from this original dated conversation. Save concrete personal facts,
+  names, relationships, dates, quantities, locations, plans, decisions and preferences. Distinguish separate events
+  across the year and preserve earlier dated facts when newer information updates them. Keep whose experience
+  each fact describes explicit. Use the supplied session timestamp for relative dates only when justified.
+
+  When original images are present, understand them jointly with surrounding text. Retain distinctive visual
+  details, visible app text, amounts, dates, people, objects and activities. Preserve each supplied Image ID and
+  image source path with its facts so the original can be reopened. An identifier is not evidence of its contents.
+  Do not infer unavailable image details or introduce outside information.
+
+  Cite useful physical source-line ranges with the full supplied source path when source access is enabled.
+  Otherwise retain self-contained facts. Follow the normal daily-note contract with a stable filename stem,
+  informative description and factual body. Never set status. Use structured file tool calls to save the memory.
+
+  Create at most one new note for this session. After a successful daily_write, finish with the requested
+  one-sentence summary. Further writes are needed only to correct a tool error or a concrete omission.
diff --git a/plugins/mobilemem/src/reme_mobilemem/benchmark.yaml b/plugins/mobilemem/src/reme_mobilemem/benchmark.yaml
new file mode 100644
index 00000000..0fba4066
--- /dev/null
+++ b/plugins/mobilemem/src/reme_mobilemem/benchmark.yaml
@@ -0,0 +1,32 @@
+extends: benchmark
+plugins: [mobilemem]
+components:
+  file_store:
+    default:
+      embedding_store: null
+  as_llm:
+    default: &candidate_model
+      backend: openai
+      model: ${LLM_MODEL_NAME:-qwen3.8-max}
+      stream: false
+      context_size: 1000000
+      max_retries: 3
+      retry_delay: 60
+      credential:
+        api_key: ${LLM_API_KEY:-}
+        base_url: ${LLM_BASE_URL:-}
+      extra_body: {enable_thinking: true}
+      parameters:
+        temperature: 0
+        thinking_enable: true
+        max_tokens: 65536
+      client_kwargs: {timeout: 600, max_retries: 0}
+    bench: *candidate_model
+    compressor: *candidate_model
+  agent_wrapper:
+    default:
+      context_config: {max_image_num: 4096}
+      model_config: {max_retries: 0}
+    bench:
+      context_config: {max_image_num: 4096}
+      model_config: {max_retries: 0}
diff --git a/plugins/mobilemem/src/reme_mobilemem/plugin.yaml b/plugins/mobilemem/src/reme_mobilemem/plugin.yaml
new file mode 100644
index 00000000..c4e2bdc5
--- /dev/null
+++ b/plugins/mobilemem/src/reme_mobilemem/plugin.yaml
@@ -0,0 +1,71 @@
+backends:
+  mobilemem_auto_memory_step: reme_mobilemem.auto_memory:MobileMemAutoMemoryStep
+  mobilemem_agentic_answer_step: reme_mobilemem.agentic_answer:MobileMemAgenticAnswerStep
+
+application_defaults:
+  jobs:
+    read_image:
+      backend: base
+      description: "Read an original saved session image through ReMe's native image Job."
+      parameters:
+        type: object
+        properties:
+          path: {type: string, description: "Workspace-relative image attachment path."}
+        required: [path]
+      steps:
+        - backend: read_image_step
+          max_bytes: 52428800
+    auto_memory:
+      backend: base
+      description: "Record one original MobileMem-Omni session using native Auto Memory."
+      include_images: true
+      include_source_sessions: true
+      parameters:
+        type: object
+        properties:
+          messages: {type: array, items: {type: object}}
+          session_id: {type: string}
+          date: {type: string, default: ""}
+          include_images: {type: boolean, default: true}
+          include_source_sessions: {type: boolean, default: true}
+          memory_hint: {type: string, default: ""}
+        required: [messages, session_id]
+      steps:
+        - backend: mobilemem_auto_memory_step
+    search:
+      backend: base
+      description: "Search this user's allowed memory and source text using BM25."
+      parameters:
+        type: object
+        properties:
+          query: {type: string}
+          limit: {type: integer, description: "Number of search results."}
+          start_date: {type: string}
+          end_date: {type: string}
+        required: [query]
+      steps:
+        - backend: search_step
+          vector_weight: 0.0
+          expand_links: false
+    agentic_answer:
+      backend: base
+      description: "Answer a MobileMem question through a fresh evidence retrieval Agent."
+      include_images: true
+      include_source_sessions: true
+      parameters:
+        type: object
+        properties:
+          query: {type: string, description: "Official benchmark answer prompt including the query."}
+          query_time: {type: string, default: ""}
+          query_images: {type: array, items: {type: object}, default: []}
+          max_iters: {type: integer, minimum: 1, default: 30}
+          include_images: {type: boolean, default: true}
+          include_source_sessions: {type: boolean, default: true}
+        required: [query]
+      steps:
+        - backend: mobilemem_agentic_answer_step
+          agent_wrapper: bench
+  components:
+    file_store:
+      default:
+        embedding_store: null
diff --git a/tests/unit/test_mobilemem_audit.py b/tests/unit/test_mobilemem_audit.py
new file mode 100644
index 00000000..e9a78def
--- /dev/null
+++ b/tests/unit/test_mobilemem_audit.py
@@ -0,0 +1,475 @@
+"""Failure-path receipts and cost accounting, without provider or server calls."""
+
+# pylint: disable=missing-function-docstring,protected-access
+import asyncio
+import json
+from types import SimpleNamespace
+
+import pytest
+
+from benchmark.mobilemem import run
+from benchmark.mobilemem._audit import ImageInputError, error_record, mean_tokens, response_record
+from reme.schema import Response
+
+
+def read(path):
+    return json.loads(path.read_text(encoding="utf-8"))
+
+
+@pytest.fixture(name="flow")
+def fixture_flow(tmp_path, monkeypatch):
+    scenes = [
+        {
+            "id": "uuid_0",
+            "image_root": tmp_path,
+            "sessions": [{"session_id": "s0", "event_start_time": "2025-01-01T09:00:00"}],
+            "questions": [
+                {"question_id": "q0", "question": "What?", "answer": "answer", "question_type": "visual_reasoning"},
+            ],
+        },
+    ]
+    state = SimpleNamespace(
+        scenes=scenes,
+        apps=[],
+        fail=None,
+        direct=False,
+        cancel=False,
+        cleanup_fail=False,
+        startup_fail=False,
+        constructor_fail=False,
+        calls=[],
+    )
+
+    class FakeApp:
+        """Mock one owned candidate or Judge application."""
+
+        def __init__(self, *, judge):
+            if state.constructor_fail and not judge:
+                raise ValueError("candidate construction failed")
+            self.judge, self.closed = judge, False
+            state.apps.append(self)
+
+        async def start(self):
+            if state.startup_fail and not self.judge:
+                raise ValueError("candidate startup failed")
+
+        async def close(self):
+            self.closed = True
+            if state.cleanup_fail and not self.judge:
+                raise ValueError("candidate cleanup failed")
+
+        async def run_job(self, name, **kwargs):
+            identity = kwargs.get("session_id", kwargs.get("query", ""))
+            state.calls.append((name, kwargs))
+            if name == "answer_judge":
+                assert run._CURRENT.get() is None  # Judge traffic cannot join candidate cost.
+            elif name != "index_update":
+                run._CURRENT.get().append(run.normalized_usage({"prompt_tokens": 100, "completion_tokens": 20}))
+            await asyncio.sleep(0)  # Force interleaving of independently scoped requests.
+            if state.fail in (name, identity):
+                if state.cancel:
+                    raise asyncio.CancelledError("cancelled offline call")
+                if state.direct:
+                    raise ValueError("direct offline failure")
+                return Response(success=False, answer="HTTP 400 input length exceeds limit")
+            if name == "answer_judge":
+                return Response(answer="1", metadata={"llm_judge_score": 1.0, "parse_default_zero": False})
+            # This portable counter is deliberately different: never sum it with HTTP receipts.
+            return Response(answer="answer", metadata={"usage": {"total_tokens": 999999}})
+
+    monkeypatch.setattr(run, "Application", FakeApp)
+    monkeypatch.setattr(run, "candidate_config", lambda *_: {"judge": False})
+    monkeypatch.setattr(run, "judge_config", lambda *_: {"judge": True})
+    monkeypatch.setattr(run, "judge_settings", lambda _: {"model": "offline", "protocol": "offline"})
+    monkeypatch.setattr(run, "session_messages", lambda *_: [{"original": "unchanged"}])
+    monkeypatch.setattr(run, "observe_usage", lambda _: None)
+    monkeypatch.setattr(run, "observe_completion", lambda _: None)
+
+    async def execute():
+        complete = await run.run(scenes, tmp_path / "run", "candidate", 4, 16)
+        return complete, read(tmp_path / "run/summary.json")
+
+    state.execute = execute
+    state.directory = tmp_path / "run/users/uuid_0"
+    return state
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("direct", [False, True])
+async def test_failed_second_memory_keeps_both_requests(flow, direct):
+    flow.scenes[0]["sessions"].append({"session_id": "s1", "event_start_time": "2025-01-02T09:00:00"})
+    flow.fail, flow.direct = "s1", direct
+    complete, summary = await flow.execute()
+    assert not complete and summary["completed"] == 0
+    assert summary["memory_usage"]["total_tokens"] == summary["token_usage"]["total_tokens"] == 240
+    assert summary["token_usage"]["records"] == 2
+    assert not (flow.directory / "memory_usage.json").exists()
+    response = read(flow.directory / "sessions/00001.json")["response"]
+    assert response is None if direct else response["success"] is False
+    error = read(flow.directory / "error.json")
+    assert (error["stage"], error["user_id"], error["session_id"]) == ("memory", "uuid_0", "s1")
+    assert all(app.closed for app in flow.apps)
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("direct", [False, True])
+async def test_failed_answer_keeps_memory_and_answer_cost_once(flow, direct):
+    flow.fail, flow.direct = "agentic_answer", direct
+    complete, summary = await flow.execute()
+    assert not complete and summary["completed"] == 0 and summary["metrics"]["llm_judge"] is None
+    assert summary["token_usage"]["total_tokens"] == 240
+    assert summary["memory_usage"]["total_tokens"] == summary["answer_usage"]["total_tokens"] == 120
+    assert summary["usage_counts"]["attempted_answers"] == 1
+    assert summary["usage_counts"]["successful_answers"] == 0
+    assert summary["mean_tokens_per_question"]["total_tokens"] == 240
+    assert summary["usage_denominators"] == {"scheduled_users": 1, "expected_questions": 1}
+    assert summary["usage_policy"]["version"] == 2
+    assert (flow.directory / "memory_usage.json").exists()
+    question = flow.directory / "questions/0000"
+    receipt = read(question / "answer-response.json")
+    assert receipt["usage"]["total_tokens"] == 120
+    assert (receipt["response"] is None) is direct
+    assert not (question / "answer.json").exists() and not (question / "result.json").exists()
+    assert read(question / "error.json")["stage"] == "answer"
+
+
+@pytest.mark.asyncio
+async def test_preprocessing_failure_keeps_earlier_memory_and_image_identity(flow, monkeypatch):
+    flow.scenes[0]["sessions"].append({"session_id": "s1", "event_start_time": "2025-01-02T09:00:00"})
+
+    def messages(session, *_):
+        if session["session_id"] == "s1":
+            try:
+                raise FileNotFoundError("missing original image")
+            except FileNotFoundError as error:
+                raise ImageInputError("image/uid0/photo.png", error) from error
+        return []
+
+    monkeypatch.setattr(run, "session_messages", messages)
+    _, summary = await flow.execute()
+    assert summary["memory_usage"]["total_tokens"] == 120
+    receipt = read(flow.directory / "sessions/00001.json")
+    assert receipt["response"] is None and receipt["usage"]["records"] == 0
+    error = read(flow.directory / "error.json")
+    assert error["stage"] == "preprocessing" and error["image_path"] == "image/uid0/photo.png"
+    assert [cause["type"] for cause in error["chain"]] == ["ImageInputError", "FileNotFoundError"]
+    assert not (flow.directory / "memory_usage.json").exists()
+
+
+@pytest.mark.asyncio
+async def test_index_failure_is_saved_without_complete_memory_marker(flow):
+    flow.fail = "index_update"
+    _, summary = await flow.execute()
+    assert summary["memory_usage"]["total_tokens"] == 120
+    assert read(flow.directory / "index-response.json")["response"]["success"] is False
+    assert read(flow.directory / "error.json")["stage"] == "index"
+    assert not (flow.directory / "memory_usage.json").exists()
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("direct", [False, True])
+async def test_judge_failure_preserves_answer_without_double_counting(flow, direct):
+    flow.fail, flow.direct = "answer_judge", direct
+    complete, summary = await flow.execute()
+    assert not complete and summary["token_usage"]["total_tokens"] == 240
+    assert summary["answer_usage"]["records"] == 1
+    question = flow.directory / "questions/0000"
+    assert read(question / "answer-response.json")["response"]["success"] is True
+    assert not (question / "answer.json").exists()
+    assert not (question / "result.json").exists()
+    assert read(question / "error.json")["stage"] == "judge"
+    assert (read(question / "judge.json") is None) is direct
+
+
+@pytest.mark.asyncio
+async def test_all_success_old_payloads_metrics_and_usage_stay_compatible(flow):
+    flow.scenes[0]["sessions"].append({"session_id": "s1", "event_start_time": "2025-01-02T09:00:00"})
+    complete, summary = await flow.execute()
+    assert complete and summary["completed"] == summary["expected"] == 1
+    assert summary["metrics"] == {"f1": 1.0, "bleu_1": 1.0, "llm_judge": 1.0}
+    assert summary["token_usage"]["total_tokens"] == 360
+    assert summary["memory_usage"]["total_tokens"] == 240
+    assert summary["answer_usage"]["total_tokens"] == 120
+    assert summary["mean_tokens_per_user"]["total_tokens"] == summary["mean_tokens_per_question"]["total_tokens"] == 360
+    assert summary["token_usage"]["cached_input_tokens"] is None
+    assert summary["token_usage"]["coverage"]["cached_input_tokens"] == 0
+    assert read(flow.directory / "memory_usage.json") == summary["memory_usage"]
+    assert [name for name, _ in flow.calls] == [
+        "auto_memory",
+        "auto_memory",
+        "index_update",
+        "agentic_answer",
+        "answer_judge",
+    ]
+    question = flow.directory / "questions/0000"
+    assert read(question / "answer-response.json")["response"]["success"] is True
+    assert not (question / "answer.json").exists()
+    result = read(question / "result.json")
+    assert result == {
+        "question_id": "q0",
+        "category": "visual_reasoning",
+        "question": "What?",
+        "reference": "answer",
+        "prediction": "answer",
+        "metrics": summary["metrics"],
+        "usage": summary["answer_usage"],
+        "judge_parse_default_zero": False,
+    }
+
+
+@pytest.mark.asyncio
+async def test_concurrent_questions_keep_cost_scopes_and_scheduled_denominator(flow):
+    flow.scenes[0]["questions"].append({**flow.scenes[0]["questions"][0], "question_id": "q1"})
+    flow.scenes.append({**flow.scenes[0], "id": "uuid_1"})
+    complete, summary = await flow.execute()
+    assert complete and summary["completed"] == 4
+    assert summary["token_usage"]["records"] == 6 and summary["token_usage"]["total_tokens"] == 720
+    assert summary["mean_tokens_per_user"]["total_tokens"] == 360
+    assert summary["mean_tokens_per_question"]["total_tokens"] == 180
+
+
+@pytest.mark.asyncio
+async def test_failure_means_use_scheduled_not_successful_denominators(flow):
+    flow.scenes[0]["questions"].append({**flow.scenes[0]["questions"][0], "question_id": "q1"})
+    flow.fail = "agentic_answer"
+    _, summary = await flow.execute()
+    assert summary["completed"] == 0 and summary["expected"] == 2
+    assert summary["token_usage"]["total_tokens"] == 360
+    assert summary["mean_tokens_per_question"]["total_tokens"] == 180
+
+
+@pytest.mark.asyncio
+async def test_empty_scheduled_population_preserves_unknown_means(flow):
+    flow.scenes.clear()
+    _, summary = await flow.execute()
+    assert summary["usage_denominators"] == {"scheduled_users": 0, "expected_questions": 0}
+    assert all(value is None for value in summary["mean_tokens_per_user"].values())
+    assert all(value is None for value in summary["mean_tokens_per_question"].values())
+    assert summary["token_usage"]["records"] == 0
+
+
+@pytest.mark.asyncio
+async def test_summary_ignores_legacy_answer_and_result_usage_copies(flow, monkeypatch):
+    original = run.close_application
+
+    async def close(app, directory, **kwargs):
+        await original(app, directory, **kwargs)
+        if app is not None and app.judge:
+            for name in ("answer.json", "result.json"):
+                path = flow.directory / "questions/0000" / name
+                data = read(path) if path.exists() else {"response": {"success": True}}
+                data["usage"] = {"total_tokens": 999999}
+                run.save(path, data)
+
+    monkeypatch.setattr(run, "close_application", close)
+    _, summary = await flow.execute()
+    assert summary["token_usage"]["total_tokens"] == 240
+    assert summary["answer_usage"]["records"] == 1
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("constructor", [False, True])
+async def test_startup_and_cleanup_failures_are_separate(flow, constructor):
+    flow.constructor_fail, flow.startup_fail = constructor, not constructor
+    flow.cleanup_fail = True
+    complete, summary = await flow.execute()
+    assert not complete and summary["token_usage"]["total_tokens"] is None
+    assert read(flow.directory / "error.json")["stage"] == "startup"
+    assert (flow.directory / "cleanup-error.json").exists() is not constructor
+    assert all(app.closed for app in flow.apps)
+
+
+@pytest.mark.asyncio
+async def test_cancelled_request_finalizes_once_and_closes_owned_apps(flow):
+    flow.fail, flow.cancel = "auto_memory", True
+    with pytest.raises(asyncio.CancelledError):
+        await flow.execute()
+    receipt = read(flow.directory / "sessions/00000.json")
+    assert receipt["response"] is None and receipt["usage"]["total_tokens"] == 120
+    assert read(flow.directory / "error.json")["error_type"] == "CancelledError"
+    assert all(app.closed for app in flow.apps)
+    assert read(flow.directory.parents[1] / "summary.json")["memory_usage"]["total_tokens"] == 120
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("cancel", [False, True])
+async def test_failed_task_joins_sibling_cleanup_before_propagating(cancel):
+    started, closed = asyncio.Event(), asyncio.Event()
+
+    async def waiting():
+        try:
+            started.set()
+            await asyncio.Event().wait()
+        finally:
+            await asyncio.sleep(0)
+            closed.set()
+
+    async def interrupted():
+        await started.wait()
+        if cancel:
+            raise asyncio.CancelledError()
+        raise ValueError("offline task failed")
+
+    with pytest.raises(asyncio.CancelledError if cancel else ValueError):
+        await run.gather_tasks([waiting(), interrupted()])
+    assert closed.is_set()
+
+
+def test_error_artifacts_remove_secrets_payloads_and_locals(monkeypatch):
+    secret = "offline-sensitive-value"
+    monkeypatch.setenv("LLM_API_KEY", secret)
+    binary = "YWJj" * 100
+    response = Response(
+        success=False,
+        answer=f"input length error api_key={secret} data:image/png;base64,{binary}",
+        metadata={
+            "headers": {"X-Private": "hidden-header"},
+            "request": {"body": "hidden-body"},
+            "credential": {"token": "hidden-credential"},
+            "traceback": "hidden-local",
+            "status_code": 400,
+        },
+    )
+    try:
+        raise ValueError(f"https://user:password@example.invalid/?key={secret} Bearer token-value sk-private-key")
+    except ValueError as error:
+        record = error_record(error, stage="answer", user_id="uuid_0", question_id="q0", response=response)
+    serialized = json.dumps([record, response_record(response)])
+    for value in (
+        secret,
+        binary,
+        "hidden-header",
+        "hidden-body",
+        "hidden-credential",
+        "hidden-local",
+        "token-value",
+        "sk-private-key",
+        "user:password",
+    ):
+        assert value not in serialized
+    assert "input length" in record["reason"]
+    assert set(record["chain"][0]["traceback"][0]) == {"file", "line", "function"}
+    assert ImageInputError("../../private.png", ValueError("bad")).image_path == "[invalid image path]"
+    successful = Response(answer="URL https://example.test/ and literal sk-example-text", metadata={"raw": binary})
+    assert response_record(successful) == successful.model_dump()
+
+
+@pytest.mark.parametrize(
+    "name",
+    ["token", "refresh_token", "id_token", "access_token", "auth_token", "private_key", "private-key", "privateKey"],
+)
+def test_credentials_are_redacted_in_failed_responses_and_error_chains(name):
+    sentinel = "0123456789abcdef" * 4
+    usage = {"input_tokens": 100, "output_tokens": 20, "total_tokens": 120, "cached_input_tokens": 30}
+    response = Response(
+        success=False,
+        answer=f'provider rejection {name}="{sentinel}"',
+        metadata={name: sentinel, "usage": usage},
+    )
+    try:
+        try:
+            raise ValueError(f"provider {name}: {sentinel}")
+        except ValueError as cause:
+            raise RuntimeError(f"job {name}='{sentinel}'") from cause
+    except RuntimeError as error:
+        diagnostic = error_record(error, stage="answer", user_id="uuid_0", question_id="q0", response=response)
+    record = response_record(response)
+    assert sentinel not in json.dumps([record, diagnostic])
+    assert record["metadata"] == {name: "[redacted]", "usage": usage}
+    assert record["answer"] == f"provider rejection {name}=[redacted]"
+    assert diagnostic["reason"] == record["answer"]
+    assert [item["reason"] for item in diagnostic["chain"]] == [
+        f"job {name}=[redacted]",
+        f"provider {name}: [redacted]",
+    ]
+    assert diagnostic["stage"] == "answer" and diagnostic["question_id"] == "q0"
+    successful = response.model_copy(update={"success": True})
+    assert response_record(successful) == successful.model_dump()
+
+
+@pytest.mark.parametrize(
+    "sentinel",
+    ["0123456789abcdef" * 4, "a", "success", "answer", "metadata", "usage", "coverage", "records", "input_tokens"],
+)
+def test_private_key_environment_values_are_redacted_without_changing_usage_schema(monkeypatch, sentinel):
+    monkeypatch.setenv("TEST_PRIVATE_KEY", sentinel)
+    usage = {"input_tokens": 100, "output_tokens": 20, "records": 1, "coverage": {"input_tokens": 1}}
+    response = Response(
+        success=False,
+        answer=f"provider returned {sentinel}",
+        metadata={"usage": usage, "private_key": "PRIVATE_SENTINEL", f"debug {sentinel}": f"detail {sentinel}"},
+    )
+    record = response_record(response)
+    assert set(record) == {"success", "answer", "metadata"}
+    assert Response.model_validate(record).success is False
+    assert record["answer"] == "provider returned [redacted]"
+    assert record["metadata"] == {
+        "usage": usage,
+        "private_key": "[redacted]",
+        "debug [redacted]": "detail [redacted]",
+    }
+    diagnostic = error_record(RuntimeError(f"provider returned {sentinel}"), stage="startup")
+    assert diagnostic["reason"] == diagnostic["chain"][0]["reason"] == "provider returned [redacted]"
+
+
+@pytest.mark.parametrize("header", ["Cookie", "Set-Cookie"])
+def test_failed_response_redacts_whole_cookie_header_without_changing_ordinary_prose(header):
+    response = Response(
+        success=False,
+        answer=f"{header}: session=opaque; other=secondsecret\nThe cookie parser failed with status 400.",
+    )
+    record = response_record(response)
+    assert "opaque" not in record["answer"] and "secondsecret" not in record["answer"]
+    assert "The cookie parser failed with status 400." in record["answer"]
+
+
+@pytest.mark.asyncio
+async def test_http_observer_includes_compressor_subsets_and_null_coverage_without_duplicate_wrapping():
+    async def send(request):
+        await asyncio.sleep(0)
+        return SimpleNamespace(status_code=200, is_stream_consumed=True, json=lambda: {"usage": request})
+
+    clients = [SimpleNamespace(send=send) for _ in range(3)]
+    app = SimpleNamespace(
+        context=SimpleNamespace(
+            components={
+                "as_llm": {
+                    name: SimpleNamespace(model=SimpleNamespace(client=SimpleNamespace(_client=client)))
+                    for name, client in zip(("default", "bench", "compressor"), clients)
+                },
+            },
+        ),
+    )
+    run.observe_usage(app)
+    run.observe_usage(app)
+
+    async def scoped(amount):
+        with run.usage_scope() as records:
+            await clients[0].send(
+                {"prompt_tokens": amount, "completion_tokens": 20, "prompt_tokens_details": {"cached_tokens": 30}},
+            )
+            await clients[2].send(
+                {"prompt_tokens": 50, "completion_tokens": 10, "completion_tokens_details": {"reasoning_tokens": 4}},
+            )
+        return run.aggregate_usage(records)
+
+    first, second = await asyncio.gather(scoped(100), scoped(200))
+    assert first["records"] == second["records"] == 2
+    assert (first["total_tokens"], second["total_tokens"]) == (180, 280)
+    assert first["cached_input_tokens"] == 30 and first["noncached_input_tokens"] == 70
+    assert first["coverage"]["cached_input_tokens"] == 1 and first["reasoning_tokens"] == 4
+    assert mean_tokens(first, 0)["total_tokens"] is None
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("failed_job,completed,cost", [("auto_memory", 0, 120), (None, 1, 240)])
+async def test_cleanup_failure_preserves_primary_outcome(flow, failed_job, completed, cost):
+    flow.fail, flow.cleanup_fail = failed_job, True
+    complete, summary = await flow.execute()
+    assert not complete and summary["completed"] == completed
+    assert summary["cleanup_error_count"] == 1 and summary["token_usage"]["total_tokens"] == cost
+    assert read(flow.directory / "cleanup-error.json")["stage"] == "cleanup"
+    if failed_job:
+        assert read(flow.directory / "error.json")["stage"] == "memory"
+    else:
+        assert summary["metrics"]["llm_judge"] == 1.0
diff --git a/tests/unit/test_mobilemem_benchmark.py b/tests/unit/test_mobilemem_benchmark.py
new file mode 100644
index 00000000..54fc256f
--- /dev/null
+++ b/tests/unit/test_mobilemem_benchmark.py
@@ -0,0 +1,407 @@
+"""Focused offline benchmark contracts; no external services or experiment writes."""
+
+# pylint: disable=missing-function-docstring,protected-access
+import base64
+from importlib import import_module
+from importlib.metadata import EntryPoint
+from io import BytesIO
+import json
+from pathlib import Path
+import tomllib
+from types import SimpleNamespace
+from unittest.mock import AsyncMock
+
+from agentscope.formatter import OpenAIChatFormatter
+from agentscope.message import AssistantMsg, Base64Source, DataBlock, Msg, TextBlock, ToolResultBlock, ToolResultState
+from PIL import Image
+import pytest
+
+from reme.components import R
+from reme.components.agent_wrapper.as_agent_wrapper import AsAgentWrapper
+from reme.components.component_registry import create_application_registry
+from reme.components.file_store import LocalFileStore
+from reme.plugin import PluginManager, _load_plugin
+from reme.schema import ApplicationConfig, Response
+from reme.steps.evolve.auto_memory import _sanitize_msg_for_save
+from reme.steps.file_io.read_image import ReadImageStep
+
+from benchmark.mobilemem import run as mobilemem
+
+
+def test_candidate_declares_required_image_dependency():
+    manifest = Path(__file__).resolve().parents[2] / "plugins/mobilemem/pyproject.toml"
+    project = tomllib.loads(manifest.read_text(encoding="utf-8"))["project"]
+    assert "pillow>=10.0.0" in project["dependencies"]
+
+
+@pytest.fixture(name="mobile_scene")
+def fixture_mobile_scene(tmp_path):
+    folder = tmp_path / "image/uid0/camera_photos"
+    folder.mkdir(parents=True)
+    Image.new("RGB", (3, 2), (12, 34, 56)).save(folder / "photo.png")
+    sessions = [
+        {
+            "session_id": f"0_{index}",
+            "event_start_time": f"2025-0{index}-01 09:00:00",
+            "event_end_time": f"2025-0{index}-01 10:00:00",
+            "dialogue": [
+                {"turn": 1, "role": "user", "content_type": "text", "content": f"Original turn {index}"},
+                {"turn": 2, "role": "user", "content_type": "image", "image_inline": "image/uid0/event/photo.png"},
+                {"turn": 3, "role": "assistant", "content_type": "text", "content": "Original reply"},
+            ],
+            "dialogue_summary": "HIDDEN_SUMMARY",
+            "memory_points": [{"memory_content": "HIDDEN_MEMORY"}],
+        }
+        for index in (2, 1)
+    ]
+    question = {
+        "question_id": "0_q_1",
+        "question": "What happened?",
+        "answer": "HIDDEN_GOLD",
+        "question_format": "open_ended",
+        "question_type": "visual_reasoning",
+        "source_session_ids": ["0_1"],
+        "image_refs": ["HIDDEN_IMAGE"],
+        "evidence": [{"explanation": "HIDDEN_EVIDENCE"}],
+    }
+    (tmp_path / "data.jsonl").write_text(json.dumps({"uuid": 0, "language": "en", "sessions": sessions}) + "\n")
+    (tmp_path / "questions.jsonl").write_text(json.dumps({"uuid": 0, "questions": [question]}) + "\n")
+    return tmp_path, mobilemem.load_mobilemem(tmp_path)[0]
+
+
+def test_mobilemem_complete_history_ids_and_no_gold(mobile_scene):
+    root, scene = mobile_scene
+    assert [session["session_id"] for session in scene["sessions"]] == ["0_1", "0_2"]
+    assert scene["questions"][0]["question_type"] == "visual_reasoning"
+    converted = mobilemem.session_messages(scene["sessions"][0], scene["image_root"])
+    assert "HIDDEN" not in json.dumps(converted)
+    original = root / "image/uid0/camera_photos/photo.png"
+    before = original.read_bytes()
+    assert converted[1]["content"][1]["text"] == "[Image ID: image/uid0/event/photo.png]"
+    assert converted[1]["content"][2]["type"] == "data"
+    assert base64.b64decode(converted[1]["content"][2]["source"]["data"]) == before
+    assert original.read_bytes() == before
+    with pytest.raises(ValueError, match="Invalid MobileMem image path"):
+        mobilemem.resolve_image(root / "image", "../outside.png", {})
+    original.unlink()
+    with pytest.raises(ValueError, match="Missing or ambiguous MobileMem image"):
+        mobilemem.session_messages(scene["sessions"][0], scene["image_root"])
+
+
+def test_official_query_and_overlap_metrics():
+    assert mobilemem.query_prompt("QUESTION", "CONTEXT") == (
+        "Question:\nQUESTION\nPlease answer the question based on the following memories:\nCONTEXT\n"
+        + mobilemem.ANSWER_RULES
+    )
+    score = mobilemem.score_answer("北京 北京", "北京")
+    assert score["f1"] == pytest.approx(2 / 3)
+    assert score["bleu_1"] == pytest.approx(0.36787944117144233)
+
+
+@pytest.fixture(name="candidate")
+def fixture_candidate(tmp_path, monkeypatch):
+    name = "mobilemem"
+    monkeypatch.syspath_prepend(str(Path(__file__).resolve().parents[2] / "plugins" / name / "src"))
+    monkeypatch.chdir(tmp_path)
+    memory = import_module(f"reme_{name}.auto_memory")
+    answer = import_module(f"reme_{name}.agentic_answer")
+    prefix = "MobileMem"
+    app = SimpleNamespace(
+        registry=R,
+        metadata={},
+        app_config=ApplicationConfig(workspace_dir=str(tmp_path)),
+        jobs={},
+        components={},
+    )
+    wrapper = AsAgentWrapper(backend="agentscope", as_llm="", app_context=app)
+    wrapper.reply = AsyncMock(return_value={"result": "answer", "session_id": "new", "usage": {"input_tokens": 7}})
+    store = LocalFileStore(embedding_store="", app_context=app)
+    return name, memory, answer, prefix, app, wrapper, store, tmp_path
+
+
+def test_candidate_registration_is_application_local(candidate):
+    name, memory, answer, prefix, *_ = candidate
+    plugin = _load_plugin(name, EntryPoint(name=name, value=f"reme_{name}", group="reme.plugins"))
+    registry = create_application_registry()
+    PluginManager([plugin]).register(registry)
+    assert registry.get("step", f"{name}_auto_memory_step") is getattr(memory, f"{prefix}AutoMemoryStep")
+    assert registry.get("step", f"{name}_agentic_answer_step") is getattr(answer, f"{prefix}AgenticAnswerStep")
+
+
+@pytest.mark.asyncio
+async def test_candidate_and_judge_start_with_native_settings(tmp_path, monkeypatch, mobile_scene):
+    from reme import Application
+
+    root = Path(__file__).resolve().parents[2] / "plugins"
+    for package in ("mobilemem", "mobilemem-judge"):
+        monkeypatch.syspath_prepend(str(root / package / "src"))
+    entries = [
+        EntryPoint(name="mobilemem", value="reme_mobilemem", group="reme.plugins"),
+        EntryPoint(name="mobilemem-judge", value="judge_mobilemem", group="reme.plugins"),
+        EntryPoint(name="mobilemem-benchmark", value="reme_mobilemem:BENCHMARK_CONFIG", group="reme.configs"),
+    ]
+
+    def installed(group, name):
+        return [entry for entry in entries if entry.group == group and entry.name == name]
+
+    monkeypatch.setattr("reme.plugin.find_entry_points", installed)
+    monkeypatch.setattr("reme.config.config_parser.find_entry_points", installed)
+    monkeypatch.setenv("LLM_API_KEY", "offline")
+    monkeypatch.setenv("LLM_BASE_URL", "https://provider.invalid/v1")
+    monkeypatch.setenv("JUDGE_MODEL_NAME", "offline-judge-override")
+    candidate_app = Application(**mobilemem.candidate_config(tmp_path / "candidate", "candidate-model"))
+    judge_app = Application(**mobilemem.judge_config(tmp_path / "judge"))
+    try:
+        await candidate_app.start()
+        await judge_app.start()
+        assert set(judge_app.context.jobs) == {"answer_judge"}
+        assert set(judge_app.context.components) == {"as_llm"}
+        audit = mobilemem.judge_settings(judge_app)
+        assert audit["model"] == "offline-judge-override"
+        assert audit["parameters"] == {"max_tokens": 4096, "temperature": 0, "thinking_enable": False}
+        with monkeypatch.context() as environment:
+            for field in ("temperature", "max_tokens", "thinking_enable"):
+                environment.setenv("TEST_PRIVATE_KEY", field)
+                assert mobilemem.judge_settings(judge_app)["parameters"] == audit["parameters"]
+        assert audit["protocol"] == "mobilemem-omni-membase-default-judge-v1"
+        assert "credential" not in json.dumps(audit) and "provider.invalid" not in json.dumps(audit)
+        models = candidate_app.context.components["as_llm"]
+        for component in models.values():
+            assert component.kwargs["model"] == "candidate-model"
+            assert component.kwargs["stream"] is False and component.kwargs["context_size"] == 1000000
+            assert component.kwargs["parameters"] == {"max_tokens": 65536, "thinking_enable": True, "temperature": 0}
+            assert component.kwargs["max_retries"] == 3 and component.kwargs["retry_delay"] == 60
+            assert component.kwargs["client_kwargs"] == {"timeout": 600, "max_retries": 0}
+        assert candidate_app.config.components["file_store"]["default"].model_dump()["embedding_store"] is None
+        assert candidate_app.config.jobs["index_update"].model_dump()["watch_dirs"] == [
+            "daily_dir",
+            "digest_dir",
+            "session_dir/dialog",
+        ]
+        from reme_mobilemem.auto_memory import MobileMemAutoMemoryStep
+
+        monkeypatch.setattr(MobileMemAutoMemoryStep, "_list_session_note", AsyncMock(return_value=None))
+        wrappers = candidate_app.context.components["agent_wrapper"]
+        for wrapper in wrappers.values():
+            wrapper.reply = AsyncMock(return_value={"result": "answer"})
+        _, scene = mobile_scene
+        messages = mobilemem.session_messages(scene["sessions"][0], scene["image_root"])
+        for images, kwargs in ((True, {}), (False, {"include_images": False})):
+            answer = await candidate_app.run_job("agentic_answer", query="Question", **kwargs)
+            assert answer.success and answer.metadata["include_images"] is images
+            toolkit = wrappers["bench"].reply.call_args.kwargs["toolkit"]
+            assert ((await toolkit.get_tool("read_image")) is not None) is images
+            memory = await candidate_app.run_job("auto_memory", messages=messages, session_id=f"s-{images}", **kwargs)
+            assert memory.success
+            assert isinstance(wrappers["default"].reply.call_args.args[0], Msg) is images
+            assert (tmp_path / "candidate/session/images" / f"s-{images}").exists() is images
+    finally:
+        await judge_app.close()
+        await candidate_app.close()
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("sources", [True, False])
+async def test_memory_saves_originals_and_native_image_links(candidate, sources):
+    _, memory, _, prefix, app, wrapper, store, workspace = candidate
+    step = getattr(memory, f"{prefix}AutoMemoryStep")(app_context=app, agent_wrapper=wrapper, file_store=store)
+    step._list_session_note = AsyncMock(return_value=None)
+    picture = BytesIO()
+    Image.new("RGB", (1, 1), (12, 34, 56)).save(picture, format="PNG")
+    image_bytes = picture.getvalue()
+    image_data = base64.b64encode(image_bytes).decode()
+    late = Msg.model_validate(
+        {
+            "id": "late",
+            "name": "Alice",
+            "role": "user",
+            "created_at": "2026-01-02T10:00:00",
+            "content": [
+                TextBlock(text="Image ID: image-7"),
+                DataBlock(source=Base64Source(media_type="image/png", data=image_data)),
+                TextBlock(text="Before.\u2028\u2028After.\u2029End.\u0085Done."),
+            ],
+        },
+    )
+    early = late.model_copy(update={"id": "early", "created_at": "2026-01-01T10:00:00"}, deep=True)
+    before = late.model_dump()
+    await step(messages=[late, early], session_id="one", include_images=True, include_source_sessions=sources)
+    saved = workspace / "session/dialog/one.jsonl"
+    assert saved.read_text() == "".join(_sanitize_msg_for_save(msg).model_dump_json() + "\n" for msg in [early, late])
+    inputs = wrapper.reply.call_args.args[0]
+    assert [block.type for block in inputs.content] == ["text", "data", "text", "data", "text"]
+    assert [block.source.data for block in inputs.content if isinstance(block, DataBlock)] == [image_data] * 2
+    text = inputs.get_text_content()
+    assert "Image ID: image-7" in text and "Before.\u2028\u2028After.\u2029End.\u0085Done." in text
+    assert ("[L2 | Alice" in text) is sources
+    files = sorted((workspace / "session/images/one").glob("*"))
+    assert len(files) == 2 and all(path.read_bytes() == image_bytes for path in files)
+    assert all(f"[[{path.relative_to(workspace).as_posix()}]]" in text for path in files)
+    assert late.model_dump() == before
+
+
+@pytest.mark.asyncio
+async def test_read_image_returns_real_formatter_image_and_rejects_escape(candidate):
+    _, _, answer, prefix, app, wrapper, store, workspace = candidate
+    path = workspace / "session/images/one/photo.png"
+    path.parent.mkdir(parents=True)
+    Image.new("RGB", (2, 2), (12, 34, 56)).save(path)
+
+    async def native_read(**kwargs):
+        step = ReadImageStep(app_context=app)
+        await step(**kwargs)
+        return step.context.response
+
+    app.jobs["read_image"] = AsyncMock(side_effect=native_read)
+    step = getattr(answer, f"{prefix}AgenticAnswerStep")(app_context=app, agent_wrapper=wrapper, file_store=store)
+    tool = answer.image_reader(step)
+    result = await tool.call(path="session/images/one/photo.png")
+    assert result.state == ToolResultState.SUCCESS and isinstance(result.content[1], DataBlock)
+    assert base64.b64decode(result.content[1].source.data) == path.read_bytes()
+    formatted = await OpenAIChatFormatter().format(
+        [
+            AssistantMsg(name="tool", content=[ToolResultBlock(id="call", name="read_image", output=result.content)]),
+        ],
+    )
+    assert any(
+        block["type"] == "image_url"
+        for msg in formatted
+        if isinstance(msg.get("content"), list)
+        for block in msg["content"]
+    )
+    assert (await tool.call(path="../other-scene.png")).state == ToolResultState.ERROR
+    assert (await tool.call(path="mem_session/private.png")).state == ToolResultState.ERROR
+    app.jobs["read_image"].assert_awaited_once()
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("sources", [True, False])
+async def test_answer_has_fresh_state_bm25_scope_and_no_gold(candidate, sources):
+    _, _, answer, prefix, app, wrapper, store, workspace = candidate
+    for relative in ["daily/note.md", "digest/note.md", "session/dialog/one.jsonl", "mem_session/private.md"]:
+        path = workspace / relative
+        path.parent.mkdir(parents=True, exist_ok=True)
+        path.write_text("evidence")
+    assert answer.evidence_paths(workspace, "daily", "digest", "session", False) == ["daily/note.md", "digest/note.md"]
+    calls = []
+
+    async def search(**kwargs):
+        calls.append(kwargs)
+        return Response(answer="evidence")
+
+    job = AsyncMock(side_effect=search)
+    job.name, job.description, job.parameters = (
+        "search",
+        "search",
+        {
+            "type": "object",
+            "properties": {"query": {"type": "string"}},
+        },
+    )
+    read = AsyncMock(return_value=Response(answer="evidence"))
+    read.name, read.description, read.parameters = "read", "read", {"type": "object", "properties": {}}
+    app.jobs = {"search": job, "read": read}
+    step = getattr(answer, f"{prefix}AgenticAnswerStep")(app_context=app, agent_wrapper=wrapper, file_store=store)
+    sessions, contexts = [], []
+    for _ in range(2):
+        response = await step(query="Official question", include_source_sessions=sources)
+        options = wrapper.reply.call_args.kwargs
+        assert wrapper.reply.call_args.args[0].get_text_content() == "Official question"
+        assert options["resume"] == "" and options["builtin_tools"] is False and options["job_tools"] == []
+        assert options["react_config"] == {"max_iters": 30}
+        sessions.append(options["session_id"])
+        await (await options["toolkit"].get_tool("search")).call(query="evidence")
+        assert calls[-1]["vector_weight"] == 0.0
+        assert ("session/dialog/one.jsonl" in calls[-1]["search_filter"]["paths"]) is sources
+        assert "mem_session/private.md" not in calls[-1]["_allowed_paths"]
+        contexts.append(calls[-1]["tool_context_id"])
+        assert response.metadata["usage"] == {"input_tokens": 7}
+    assert len(set(sessions)) == len(set(contexts)) == 2
+
+
+@pytest.mark.asyncio
+async def test_image_only_pipeline_keeps_all_sessions_and_gold_is_judge_only(mobile_scene, tmp_path, monkeypatch):
+    from benchmark.mobilemem.run import normalized_usage, observe_completion
+
+    _, scene = mobile_scene
+    calls, apps = [], []
+
+    class Candidate:
+        """Offline Application stand-in preserving the native Job call boundary."""
+
+        def __init__(self, **config):
+            self.config = config
+            self.closed = False
+            self.context = SimpleNamespace(
+                components={
+                    "agent_wrapper": {name: SimpleNamespace(session_path=tmp_path) for name in ("default", "bench")},
+                },
+            )
+            apps.append(self)
+
+        async def start(self):
+            pass
+
+        async def close(self):
+            self.closed = True
+
+        async def run_job(self, name, **kwargs):
+            calls.append((name, kwargs))
+            return Response(answer="Retained answer", metadata={"agent_session_id": "new-agent"})
+
+    judge = SimpleNamespace(
+        run_job=AsyncMock(
+            return_value=Response(
+                metadata={"llm_judge_score": 1, "parse_default_zero": False},
+            ),
+        ),
+    )
+    monkeypatch.setattr(mobilemem, "Application", Candidate)
+
+    def configured(workspace, model):
+        return {"workspace": workspace, "model": model}
+
+    monkeypatch.setattr(mobilemem, "candidate_config", configured)
+    monkeypatch.setattr(mobilemem, "observe_usage", lambda _: None)
+    monkeypatch.setattr(mobilemem, "observe_completion", lambda _: None)
+    await mobilemem.evaluate_user(
+        scene,
+        tmp_path / "new-user",
+        "candidate",
+        judge,
+        __import__("asyncio").Semaphore(2),
+    )
+    assert [name for name, _ in calls] == ["auto_memory", "auto_memory", "index_update", "agentic_answer"]
+    assert [kw["session_id"] for name, kw in calls if name == "auto_memory"] == ["0_1", "0_2"]
+    for name, kwargs in calls:
+        assert "HIDDEN" not in json.dumps(kwargs)
+        if name in {"auto_memory", "agentic_answer"}:
+            assert kwargs["include_images"] is kwargs["include_source_sessions"] is True
+    answer = calls[-1][1]
+    assert answer["max_iters"] == 30
+    assert answer["query"] == mobilemem.query_prompt(
+        scene["questions"][0]["question"],
+        "Use the available evidence tools.",
+    )
+    assert "category" not in answer and "question_type" not in answer
+    judge_inputs = judge.run_job.call_args.kwargs
+    assert judge_inputs["reference"] == "HIDDEN_GOLD"
+    assert judge_inputs["evidence"] == ["HIDDEN_EVIDENCE"]
+    result = json.loads((tmp_path / "new-user/questions/0000/result.json").read_text(encoding="utf-8"))
+    assert result["metrics"]["llm_judge"] == 1 and apps[0].closed
+    assert normalized_usage({"prompt_tokens": 100, "completion_tokens": 20})["cached_input_tokens"] is None
+    assert (
+        normalized_usage({"prompt_tokens": 100, "prompt_tokens_details": {"cached_tokens": 30}})[
+            "noncached_input_tokens"
+        ]
+        == 70
+    )
+    raw = {"last_message": {"finished_reason": "exceed_max_iters"}, "result": "native answer"}
+    native = AsyncMock(return_value=raw)
+    wrapper = SimpleNamespace(reply=native)
+    observe_completion(SimpleNamespace(context=SimpleNamespace(components={"agent_wrapper": {"bench": wrapper}})))
+    assert await wrapper.reply("unchanged input", max_iters=30) is raw
+    native.assert_awaited_once_with("unchanged input", max_iters=30)
+    native.return_value = {"last_message": {"finished_reason": "interrupted"}}
+    with pytest.raises(RuntimeError, match="interrupted"):
+        await wrapper.reply("unchanged input")
diff --git a/tests/unit/test_mobilemem_judge.py b/tests/unit/test_mobilemem_judge.py
new file mode 100644
index 00000000..4f8630c8
--- /dev/null
+++ b/tests/unit/test_mobilemem_judge.py
@@ -0,0 +1,85 @@
+"""Standalone judge Jobs preserve official prompts, parsers and generation defaults."""
+
+# pylint: disable=missing-function-docstring,protected-access
+import hashlib
+from importlib import import_module
+from pathlib import Path
+from unittest.mock import AsyncMock
+
+from agentscope.message import TextBlock
+from agentscope.model import ChatResponse, ChatUsage
+import pytest
+import yaml
+
+from reme.components.runtime_context import RuntimeContext
+from reme.plugin_manifest import parse_plugin_manifest
+
+
+@pytest.fixture(name="judge")
+def fixture_judge(monkeypatch):
+    name = "mobilemem"
+    root = Path(__file__).resolve().parents[2] / "plugins" / f"{name}-judge" / "src"
+    monkeypatch.syspath_prepend(str(root))
+    module = import_module(f"judge_{name}.llm_judge")
+    prefix = "MobileMem"
+    step = getattr(module, f"{prefix}JudgeStep")()
+    step.context = RuntimeContext.from_context(
+        None,
+        question="QUESTION",
+        reference="REFERENCE",
+        prediction="PREDICTION",
+        evidence=["first", "second"],
+        category="information_extraction",
+    )
+    step.as_llm = AsyncMock(
+        return_value=ChatResponse(
+            content=[TextBlock(text='{"label":"CORRECT"}')],
+            is_last=True,
+            usage=ChatUsage(100, 10, 0.01, cache_input_tokens=30),
+        ),
+    )
+    return name, step, import_module(f"judge_{name}.protocol"), root
+
+
+@pytest.mark.asyncio
+async def test_judge_job_uses_only_official_prompt_and_separate_usage(judge):
+    name, step, protocol, root = judge
+    response = await step.execute()
+    assert response.success and response.metadata["llm_judge_score"] == 1
+    assert response.metadata["usage"]["cache_input_tokens"] == 30
+    kwargs = {"evidence": ["first", "second"]}
+    expected = protocol.judge_prompt("QUESTION", "REFERENCE", "PREDICTION", **kwargs)
+    assert step.as_llm.call_args.args[0][0].get_text_content() == expected
+    assert len(step.as_llm.call_args.args[0]) == 1 and not step.as_llm.call_args.kwargs
+    text = (root / f"judge_{name}" / "plugin.yaml").read_text()
+    parse_plugin_manifest(text, plugin_name=f"{name}-judge")
+    manifest = yaml.safe_load(text)["application_defaults"]
+    assert manifest["jobs"]["answer_judge"]["steps"] == [{"backend": f"{name}_judge_step", "as_llm": "judge"}]
+    model = manifest["components"]["as_llm"]["judge"]
+    assert model["extra_body"] == {"enable_thinking": False} and model["parameters"]["temperature"] == 0
+    assert model["parameters"]["max_tokens"] == 4096
+    step.as_llm.return_value = ChatResponse(content=[TextBlock(text="malformed")], is_last=True)
+    assert (await step.execute()).metadata["parse_default_zero"] is True
+    step.as_llm.side_effect = TimeoutError("provider")
+    with pytest.raises(TimeoutError):
+        await step.execute()
+
+
+def test_mobilemem_official_prompt_and_parser_golden_contracts(monkeypatch):
+    monkeypatch.syspath_prepend(str(Path(__file__).resolve().parents[2] / "plugins/mobilemem-judge/src"))
+    protocol = import_module("judge_mobilemem.protocol")
+    for mode, digest in [
+        ("membase_default", "7880f17ac2335307094dc8b02fa2c0093e1bec7b335215e3362e95a785a0f495"),
+        ("native_strict", "8710fcee94ffaa1b40911073b1f6404b62b93d36a4cc8236f3a10fef73622ca7"),
+    ]:
+        prompt = protocol.judge_prompt(
+            "QUESTION $prediction",
+            "REFERENCE",
+            "PREDICTION $question",
+            ["first", "second"],
+            judge_protocol=mode,
+        )
+        assert hashlib.sha256(prompt.encode()).hexdigest() == digest
+    for raw, score, default in [('{"label":"CORRECT"}', 1, False), ("CORRECT WRONG", 0, False), ("bad", 0, True)]:
+        parsed = protocol.parse_judge(raw)
+        assert (parsed["llm_judge_score"], parsed["parse_default_zero"]) == (score, default)