From 11e71eccd41a42c9c6d07facfa65e32eab3a2341 Mon Sep 17 00:00:00 2001
From: Weiming Liao <liaowm5@gmail.com>
Date: Tue, 3 Nov 2026 00:02:31 +0800
Subject: [PATCH] [feat] assistant: select native skills in chat

Signed-off-by: Weiming Liao <liaowm5@gmail.com>
---
 .../skills/character-replacement/SKILL.md     |   25 +
 .../character-replacement-continuation.json   | 8134 +++++++++++++++++
 .../assets/character-replacement.json         | 2855 ++++++
 .../character-replacement/prompt-writing.md   |   64 +
 .../character-replacement/video-segment.md    |   70 +
 .../skills/character-replacement/workflow.md  |   59 +
 src/canvas/AssistantPanel.tsx                 |   23 +-
 src/canvas/ChatReferenceEditor.tsx            |   79 +-
 src/canvas/SkillPicker.tsx                    |  243 +
 src/canvas/assistant-panel.css                |   40 +
 src/canvas/chatReferenceContent.ts            |   11 +-
 src/canvas/chatReferenceDOM.ts                |    8 +-
 src/canvas/generationReferenceContent.ts      |    3 +-
 src/canvas/operations.ts                      |    2 +-
 src/canvas/referenceMentions.ts               |    7 +
 src/canvas/useAssistantChat.ts                |    1 +
 tests/chatReferenceDOM.test.ts                |   24 +-
 tests/referenceMentions.test.ts               |   18 +
 18 files changed, 11625 insertions(+), 41 deletions(-)
 create mode 100644 packages/agent/skills/character-replacement/SKILL.md
 create mode 100644 packages/agent/skills/character-replacement/assets/character-replacement-continuation.json
 create mode 100644 packages/agent/skills/character-replacement/assets/character-replacement.json
 create mode 100644 packages/agent/skills/character-replacement/prompt-writing.md
 create mode 100644 packages/agent/skills/character-replacement/video-segment.md
 create mode 100644 packages/agent/skills/character-replacement/workflow.md
 create mode 100644 src/canvas/SkillPicker.tsx

diff --git a/packages/agent/skills/character-replacement/SKILL.md b/packages/agent/skills/character-replacement/SKILL.md
new file mode 100644
index 00000000..e3c9e0ae
--- /dev/null
+++ b/packages/agent/skills/character-replacement/SKILL.md
@@ -0,0 +1,25 @@
+---
+name: character-replacement
+description: Plan MiniMax-H3 character replacement, write per-segment Ref2VA prompts and configure reusable H3-04 ComfyUI workflows for generation and review.
+---
+
+# Character Replacement
+
+Make character replacement easy to use: the user supplies source media and a replacement request; the agent derives the segment plan, prompts and workflow parameters. Keep the input boundary as original images, source video and explicit prompts. Work only on the requested deliverable; planning or prompt edits do not start generation, restart services or introduce preprocessing.
+
+For a simple one-person edit without segmented continuation, reuse the [H3-04 Character Replacement workflow](assets/character-replacement.json). For planned multi-segment work, use the Agentic Continuation template linked below; its example-specific settings must be recalculated for new footage.
+
+1. Create a 24-FPS constant-frame-rate working copy of the source video before visual inspection, segmentation and frame-index calculations, unless the user explicitly requests another FPS. Preserve the original file and playback timing. Read [video-segment.md](video-segment.md) first. Use a vision-capable model to inspect the source video, establish shot boundaries and track when each selected person appears, interacts, becomes occluded and leaves. Produce the segment plan before writing new segment prompts.
+2. Read [prompt-writing.md](prompt-writing.md), then write each segment's prompt from its inspected action and explicit source-person-to-picture mappings.
+3. For a single-person, single-segment edit, configure the simple workflow linked above. For segmented or multi-person work, configure a task-specific copy of the [H3-04 Agentic Continuation workflow](assets/character-replacement-continuation.json), reusing Global Control, existing nodes and one shared segment-subgraph definition. Follow [workflow.md](workflow.md) for configuration, execution and review.
+4. When generation is requested, submit the executable graph through ComfyUI, monitor results, inspect segment previews and deliver the assembled video with remaining quality defects.
+
+Prompt-format dependency: read the official [MiniMax H3 prompt-writing skill](https://github.com/MiniMax-AI/MiniMax-H3/tree/main/skills/h3-prompt-writing). It can be read directly from the repository; local installation is optional. Before execution, establish the ComfyUI URL, installed node availability, effective Omni deployment settings and task output directory as described in [workflow.md](workflow.md).
+
+Resolve repository-relative references from this skill directory after resolving any global skill symlink, not from the agent's current working directory.
+
+Execution boundary: agent → ComfyUI execution API → existing vLLM-Omni nodes → vLLM-Omni video API. The nodes own model requests; the agent does not bypass ComfyUI with a separate generation client.
+
+For a prompt-only correction to an existing segment, inspect its relevant footage and existing plan; revise the plan only if the observed defect exposes an incorrect boundary or mapping. Do not invent a new segmentation for every wording edit.
+
+Preserve the user's model, resolution, FPS and fixed seed unless asked to change them. Report written plans and prompts separately from generation and visual acceptance. Keep Markdown paragraphs on single source lines and usage notes brief.
diff --git a/packages/agent/skills/character-replacement/assets/character-replacement-continuation.json b/packages/agent/skills/character-replacement/assets/character-replacement-continuation.json
new file mode 100644
index 00000000..66e4f695
--- /dev/null
+++ b/packages/agent/skills/character-replacement/assets/character-replacement-continuation.json
@@ -0,0 +1,8134 @@
+{
+  "id": "001fab76-5b80-4f68-b62f-c1f78760a75c",
+  "revision": 0,
+  "last_node_id": 10643,
+  "last_link_id": 17268,
+  "nodes": [
+    {
+      "id": 10,
+      "type": "MarkdownNote",
+      "pos": [
+        -863,
+        222
+      ],
+      "size": [
+        771,
+        992
+      ],
+      "flags": {},
+      "order": 2,
+      "mode": 0,
+      "inputs": [],
+      "outputs": [],
+      "title": "Character Replacement Guide",
+      "properties": {},
+      "widgets_values": [
+        "1. This continuation example is scene-specific, not a universal workflow.\n2. Use the character-replacement skill to inspect new footage, plan segments and update each segment prompt and frame settings.\n3. Configure Global Control, review segment previews, then assemble. Current frame settings assume 24 FPS."
+      ],
+      "widgets_values_named": {
+        "text": "1. Enable the case you want to run; mute the others.\n2. Replace its character images and source video(s).\n3. Update the prompt to say which source person each picture replaces. Keep the existing prompt structure.\n4. In Global Control, set mode, service URL, model, LoRA paths, width, height and fps.\n5. Run and check the preview.\n\nCase03: when changing source clips, update each segment's prompt, duration and guide/trim frames. Its current frame settings use 24 FPS."
+      },
+      "color": "#333",
+      "bgcolor": "#535353"
+    },
+    {
+      "id": 10001,
+      "type": "LoadImage",
+      "pos": [
+        100,
+        2904
+      ],
+      "size": [
+        250,
+        314
+      ],
+      "flags": {},
+      "order": 8,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "image",
+          "name": "image",
+          "type": "COMBO",
+          "widget": {
+            "name": "image"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "IMAGEUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "IMAGE",
+          "name": "IMAGE",
+          "type": "IMAGE",
+          "links": [
+            17222,
+            17227,
+            17228,
+            17233,
+            17234
+          ]
+        },
+        {
+          "localized_name": "MASK",
+          "name": "MASK",
+          "type": "MASK",
+          "links": []
+        }
+      ],
+      "title": "Picture1 · center",
+      "properties": {
+        "Node name for S&R": "LoadImage"
+      },
+      "widgets_values": [
+        "0_jensen_huang.jpeg",
+        "image"
+      ],
+      "widgets_values_named": {
+        "image": "0_jensen_huang.jpeg",
+        "upload": "image"
+      }
+    },
+    {
+      "id": 10002,
+      "type": "LoadImage",
+      "pos": [
+        380,
+        2904
+      ],
+      "size": [
+        250,
+        314
+      ],
+      "flags": {},
+      "order": 9,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "image",
+          "name": "image",
+          "type": "COMBO",
+          "widget": {
+            "name": "image"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "IMAGEUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "IMAGE",
+          "name": "IMAGE",
+          "type": "IMAGE",
+          "links": [
+            17223,
+            17229
+          ]
+        },
+        {
+          "localized_name": "MASK",
+          "name": "MASK",
+          "type": "MASK",
+          "links": []
+        }
+      ],
+      "title": "Picture2 · right front",
+      "properties": {
+        "Node name for S&R": "LoadImage"
+      },
+      "widgets_values": [
+        "02_sun_wukong.png",
+        "image"
+      ],
+      "widgets_values_named": {
+        "image": "02_sun_wukong.png",
+        "upload": "image"
+      }
+    },
+    {
+      "id": 10003,
+      "type": "LoadImage",
+      "pos": [
+        660,
+        2904
+      ],
+      "size": [
+        250,
+        314
+      ],
+      "flags": {},
+      "order": 10,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "image",
+          "name": "image",
+          "type": "COMBO",
+          "widget": {
+            "name": "image"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "IMAGEUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "IMAGE",
+          "name": "IMAGE",
+          "type": "IMAGE",
+          "links": [
+            17224,
+            17230
+          ]
+        },
+        {
+          "localized_name": "MASK",
+          "name": "MASK",
+          "type": "MASK",
+          "links": []
+        }
+      ],
+      "title": "Picture3 · left back",
+      "properties": {
+        "Node name for S&R": "LoadImage"
+      },
+      "widgets_values": [
+        "03_zhu_bajie.png",
+        "image"
+      ],
+      "widgets_values_named": {
+        "image": "03_zhu_bajie.png",
+        "upload": "image"
+      }
+    },
+    {
+      "id": 10004,
+      "type": "LoadImage",
+      "pos": [
+        940,
+        2904
+      ],
+      "size": [
+        250,
+        314
+      ],
+      "flags": {},
+      "order": 11,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "image",
+          "name": "image",
+          "type": "COMBO",
+          "widget": {
+            "name": "image"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "IMAGEUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "IMAGE",
+          "name": "IMAGE",
+          "type": "IMAGE",
+          "links": [
+            17225,
+            17231
+          ]
+        },
+        {
+          "localized_name": "MASK",
+          "name": "MASK",
+          "type": "MASK",
+          "links": []
+        }
+      ],
+      "title": "Picture4 · left front",
+      "properties": {
+        "Node name for S&R": "LoadImage"
+      },
+      "widgets_values": [
+        "04_sha_seng.png",
+        "image"
+      ],
+      "widgets_values_named": {
+        "image": "04_sha_seng.png",
+        "upload": "image"
+      }
+    },
+    {
+      "id": 10005,
+      "type": "LoadImage",
+      "pos": [
+        1220,
+        2904
+      ],
+      "size": [
+        250,
+        314
+      ],
+      "flags": {},
+      "order": 12,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "image",
+          "name": "image",
+          "type": "COMBO",
+          "widget": {
+            "name": "image"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "IMAGEUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "IMAGE",
+          "name": "IMAGE",
+          "type": "IMAGE",
+          "links": [
+            17226,
+            17232
+          ]
+        },
+        {
+          "localized_name": "MASK",
+          "name": "MASK",
+          "type": "MASK",
+          "links": []
+        }
+      ],
+      "title": "Picture5 · right back",
+      "properties": {
+        "Node name for S&R": "LoadImage"
+      },
+      "widgets_values": [
+        "05_bai_long_ma (1).png",
+        "image"
+      ],
+      "widgets_values_named": {
+        "image": "05_bai_long_ma (1).png",
+        "upload": "image"
+      }
+    },
+    {
+      "id": 10006,
+      "type": "LoadVideo",
+      "pos": [
+        880,
+        3384
+      ],
+      "size": [
+        550,
+        460
+      ],
+      "flags": {},
+      "order": 13,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "file",
+          "name": "file",
+          "type": "COMBO",
+          "widget": {
+            "name": "file"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "IMAGEUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "VIDEO",
+          "name": "VIDEO",
+          "type": "VIDEO",
+          "links": [
+            10025
+          ]
+        }
+      ],
+      "title": "A · source context",
+      "properties": {
+        "Node name for S&R": "LoadVideo"
+      },
+      "widgets_values": [
+        "h3-checkpoint3-A-reference.mp4",
+        "image"
+      ],
+      "widgets_values_named": {
+        "file": "h3-checkpoint3-A-reference.mp4",
+        "upload": "image"
+      }
+    },
+    {
+      "id": 10007,
+      "type": "LoadVideo",
+      "pos": [
+        100,
+        3384
+      ],
+      "size": [
+        550,
+        460
+      ],
+      "flags": {},
+      "order": 14,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "file",
+          "name": "file",
+          "type": "COMBO",
+          "widget": {
+            "name": "file"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "IMAGEUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "VIDEO",
+          "name": "VIDEO",
+          "type": "VIDEO",
+          "links": [
+            10001
+          ]
+        }
+      ],
+      "title": "B · source context",
+      "properties": {
+        "Node name for S&R": "LoadVideo"
+      },
+      "widgets_values": [
+        "h3-checkpoint3-B-reference.mp4",
+        "image"
+      ],
+      "widgets_values_named": {
+        "file": "h3-checkpoint3-B-reference.mp4",
+        "upload": "image"
+      }
+    },
+    {
+      "id": 10008,
+      "type": "LoadVideo",
+      "pos": [
+        1660,
+        3384
+      ],
+      "size": [
+        550,
+        460
+      ],
+      "flags": {},
+      "order": 15,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "file",
+          "name": "file",
+          "type": "COMBO",
+          "widget": {
+            "name": "file"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "IMAGEUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "VIDEO",
+          "name": "VIDEO",
+          "type": "VIDEO",
+          "links": [
+            10044
+          ]
+        }
+      ],
+      "title": "C · source context",
+      "properties": {
+        "Node name for S&R": "LoadVideo"
+      },
+      "widgets_values": [
+        "h3-checkpoint3-C-reference.mp4",
+        "image"
+      ],
+      "widgets_values_named": {
+        "file": "h3-checkpoint3-C-reference.mp4",
+        "upload": "image"
+      }
+    },
+    {
+      "id": 10009,
+      "type": "LoadVideo",
+      "pos": [
+        2440,
+        3384
+      ],
+      "size": [
+        550,
+        460
+      ],
+      "flags": {},
+      "order": 16,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "file",
+          "name": "file",
+          "type": "COMBO",
+          "widget": {
+            "name": "file"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "IMAGEUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "VIDEO",
+          "name": "VIDEO",
+          "type": "VIDEO",
+          "links": [
+            10065
+          ]
+        }
+      ],
+      "title": "D · source context",
+      "properties": {
+        "Node name for S&R": "LoadVideo"
+      },
+      "widgets_values": [
+        "h3-checkpoint3-D-reference.mp4",
+        "image"
+      ],
+      "widgets_values_named": {
+        "file": "h3-checkpoint3-D-reference.mp4",
+        "upload": "image"
+      }
+    },
+    {
+      "id": 10010,
+      "type": "LoadVideo",
+      "pos": [
+        3220,
+        3384
+      ],
+      "size": [
+        550,
+        460
+      ],
+      "flags": {},
+      "order": 17,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "file",
+          "name": "file",
+          "type": "COMBO",
+          "widget": {
+            "name": "file"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "IMAGEUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "VIDEO",
+          "name": "VIDEO",
+          "type": "VIDEO",
+          "links": [
+            10082
+          ]
+        }
+      ],
+      "title": "E · source context",
+      "properties": {
+        "Node name for S&R": "LoadVideo"
+      },
+      "widgets_values": [
+        "h3-checkpoint3-E-reference.mp4",
+        "image"
+      ],
+      "widgets_values_named": {
+        "file": "h3-checkpoint3-E-reference.mp4",
+        "upload": "image"
+      }
+    },
+    {
+      "id": 10016,
+      "type": "LoadAudio",
+      "pos": [
+        1550,
+        2904
+      ],
+      "size": [
+        440,
+        200
+      ],
+      "flags": {},
+      "order": 18,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "audio",
+          "name": "audio",
+          "type": "COMBO",
+          "widget": {
+            "name": "audio"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "audioUI",
+          "name": "audioUI",
+          "type": "AUDIO_UI",
+          "widget": {
+            "name": "audioUI"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "choose file to upload",
+          "name": "upload",
+          "type": "AUDIOUPLOAD",
+          "widget": {
+            "name": "upload"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "AUDIO",
+          "name": "AUDIO",
+          "type": "AUDIO",
+          "links": [
+            10099
+          ]
+        }
+      ],
+      "title": "Original 27s soundtrack",
+      "properties": {
+        "Node name for S&R": "LoadAudio"
+      },
+      "widgets_values": [
+        "h3-checkpoint3-source.m4a",
+        ""
+      ],
+      "widgets_values_named": {
+        "audio": "h3-checkpoint3-source.m4a",
+        "upload": ""
+      }
+    },
+    {
+      "id": 10070,
+      "type": "ConcatenateVideo",
+      "pos": [
+        1350,
+        6114
+      ],
+      "size": [
+        430,
+        260
+      ],
+      "flags": {},
+      "order": 53,
+      "mode": 0,
+      "inputs": [
+        {
+          "localized_name": "video0",
+          "name": "videos.video0",
+          "type": "VIDEO",
+          "link": 10094
+        },
+        {
+          "localized_name": "video1",
+          "name": "videos.video1",
+          "shape": 7,
+          "type": "VIDEO",
+          "link": 10095
+        },
+        {
+          "localized_name": "video2",
+          "name": "videos.video2",
+          "shape": 7,
+          "type": "VIDEO",
+          "link": 10096
+        },
+        {
+          "localized_name": "video3",
+          "name": "videos.video3",
+          "shape": 7,
+          "type": "VIDEO",
+          "link": 10097
+        },
+        {
+          "localized_name": "video4",
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+        "model": "Wan-AI/Wan2.2-T2V-A14B-Diffusers",
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+          "type": "INT",
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+          "type": "IMAGE",
+          "links": [
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+        },
+        {
+          "name": "frames",
+          "type": "IMAGE",
+          "links": []
+        },
+        {
+          "name": "video",
+          "type": "VIDEO",
+          "links": [
+            10120
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+        }
+      ],
+      "title": "C · forward",
+      "properties": {
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+        "previewExposures": []
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+      "widgets_values": [
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+        "subject_definitions:\n<Subject 1> is the target person in <Picture 1>, defining that person's face, hair, complete visible clothing and worn accessories.\n<Subject 6> is the central performer originally wearing a pale suit in <Video 1>, whose track is replaced by <Subject 1>.\n<Subject 2> is the target person in <Picture 2>, defining that person's face, hair, complete visible clothing and worn accessories.\n<Subject 7> is the right foreground person in <Video 1>, whose track is replaced by <Subject 2>.\n<Subject 3> is the target person in <Picture 3>, defining that person's face, hair, complete visible clothing and worn accessories.\n<Subject 8> is the left background person in <Video 1>, whose track is replaced by <Subject 3>.\n<Subject 4> is the target person in <Picture 4>, defining that person's face, hair, complete visible clothing and worn accessories.\n<Subject 9> is the left foreground person in <Video 1>, whose track is replaced by <Subject 4>.\n<Subject 5> is the target person in <Picture 5>, defining that person's face, hair, complete visible clothing and worn accessories.\n<Subject 10> is the right background person in <Video 1>, whose track is replaced by <Subject 5>.\n<Video 1> is the source video for the target video edit.\n\nsummary:\n[video editing + reference generation] The target video is an edited version of <Video 1>. Replace each of <Subject 6> through <Subject 10> with the corresponding target <Subject 1> through <Subject 5>, preserving the source performance, scene, camera and timing.\n\nretention_analysis:\n<Subject 1>: fully_preserved - Preserve this person's face and all visible worn items from <Picture 1> throughout the source movement.\n<Subject 6>: attribute_transfer - transfer only this source person's pose, actions, expressions, position and visibility to <Subject 1>; replace their face, hair, clothing and worn accessories.\n<Subject 2>: fully_preserved - Preserve this person's face and all visible worn items from <Picture 2> throughout the source movement.\n<Subject 7>: attribute_transfer - transfer only this source person's pose, actions, expressions, position and visibility to <Subject 2>; replace their face, hair, clothing and worn accessories.\n<Subject 3>: fully_preserved - Preserve this person's face and all visible worn items from <Picture 3> throughout the source movement.\n<Subject 8>: attribute_transfer - transfer only this source person's pose, actions, expressions, position and visibility to <Subject 3>; replace their face, hair, clothing and worn accessories.\n<Subject 4>: fully_preserved - Preserve this person's face and all visible worn items from <Picture 4> throughout the source movement.\n<Subject 9>: attribute_transfer - transfer only this source person's pose, actions, expressions, position and visibility to <Subject 4>; replace their face, hair, clothing and worn accessories.\n<Subject 5>: fully_preserved - Preserve this person's face and all visible worn items from <Picture 5> throughout the source movement.\n<Subject 10>: attribute_transfer - transfer only this source person's pose, actions, expressions, position and visibility to <Subject 5>; replace their face, hair, clothing and worn accessories.\n<Video 1>: partially_preserved - retain the source environment, lighting, camera, framing, choreography and timing; replace only the five assigned appearances.\n\ndetailed_description:\nPreserve the source visual rendering, camera and lighting.\n[Shot 1] The central source performer <Subject 6> is replaced by <Subject 1>. He sits on the bench and follows the cigarette-lighting performance, hand gestures and expressions in <Video 1>. The four surrounding source people are replaced separately: <Subject 7> by <Subject 2> at right foreground, <Subject 8> by <Subject 3> at left background, <Subject 9> by <Subject 4> at left foreground, and <Subject 10> by <Subject 5> at right background. Their hands interact with the central performer at the source positions. When the surrounding people rise, move apart and leave the frame, each assigned target follows only their own source track and leaves with that person. The central performer remains <Subject 1> as they lean forward, stand, turn and move across the stage following <Video 1>. At the end of this source action, the raised hand is empty and its bare index finger extends to point, following the exact hand shape, orientation and timing in <Video 1>. The earlier cigarette-lighting action ends at the source moment; objects remain only where and when they are actually visible in the source. Preserve this main person's target face, hair, clothing and worn accessories through the head and body turn. Keep each target's appearance separate during overlap and occlusion. Render only people visible in the source at each moment. Reference pictures supply appearance only; the environment, props, lighting, camera and action come from <Video 1>. Opening continuation guides establish the inherited pose and composition.\n\noverall_soundscape:\nNo additional dialogue or sound effects. The original source soundtrack is restored during assembly.\n\nnon_diegetic_music:\nNo additional music.\n",
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+        96,
+        117,
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+        4096,
+        false,
+        22,
+        128,
+        1344,
+        768,
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+      "widgets_values_named": {
+        "url": "http://localhost:8000/v1",
+        "model": "Wan-AI/Wan2.2-T2V-A14B-Diffusers",
+        "prompt": "subject_definitions:\n<Subject 1> is the target person in <Picture 1>, defining that person's face, hair, complete visible clothing and worn accessories.\n<Subject 6> is the central performer originally wearing a pale suit in <Video 1>, whose track is replaced by <Subject 1>.\n<Subject 2> is the target person in <Picture 2>, defining that person's face, hair, complete visible clothing and worn accessories.\n<Subject 7> is the right foreground person in <Video 1>, whose track is replaced by <Subject 2>.\n<Subject 3> is the target person in <Picture 3>, defining that person's face, hair, complete visible clothing and worn accessories.\n<Subject 8> is the left background person in <Video 1>, whose track is replaced by <Subject 3>.\n<Subject 4> is the target person in <Picture 4>, defining that person's face, hair, complete visible clothing and worn accessories.\n<Subject 9> is the left foreground person in <Video 1>, whose track is replaced by <Subject 4>.\n<Subject 5> is the target person in <Picture 5>, defining that person's face, hair, complete visible clothing and worn accessories.\n<Subject 10> is the right background person in <Video 1>, whose track is replaced by <Subject 5>.\n<Video 1> is the source video for the target video edit.\n\nsummary:\n[video editing + reference generation] The target video is an edited version of <Video 1>. Replace each of <Subject 6> through <Subject 10> with the corresponding target <Subject 1> through <Subject 5>, preserving the source performance, scene, camera and timing.\n\nretention_analysis:\n<Subject 1>: fully_preserved - Preserve this person's face and all visible worn items from <Picture 1> throughout the source movement.\n<Subject 6>: attribute_transfer - transfer only this source person's pose, actions, expressions, position and visibility to <Subject 1>; replace their face, hair, clothing and worn accessories.\n<Subject 2>: fully_preserved - Preserve this person's face and all visible worn items from <Picture 2> throughout the source movement.\n<Subject 7>: attribute_transfer - transfer only this source person's pose, actions, expressions, position and visibility to <Subject 2>; replace their face, hair, clothing and worn accessories.\n<Subject 3>: fully_preserved - Preserve this person's face and all visible worn items from <Picture 3> throughout the source movement.\n<Subject 8>: attribute_transfer - transfer only this source person's pose, actions, expressions, position and visibility to <Subject 3>; replace their face, hair, clothing and worn accessories.\n<Subject 4>: fully_preserved - Preserve this person's face and all visible worn items from <Picture 4> throughout the source movement.\n<Subject 9>: attribute_transfer - transfer only this source person's pose, actions, expressions, position and visibility to <Subject 4>; replace their face, hair, clothing and worn accessories.\n<Subject 5>: fully_preserved - Preserve this person's face and all visible worn items from <Picture 5> throughout the source movement.\n<Subject 10>: attribute_transfer - transfer only this source person's pose, actions, expressions, position and visibility to <Subject 5>; replace their face, hair, clothing and worn accessories.\n<Video 1>: partially_preserved - retain the source environment, lighting, camera, framing, choreography and timing; replace only the five assigned appearances.\n\ndetailed_description:\nPreserve the source visual rendering, camera and lighting.\n[Shot 1] The central source performer <Subject 6> is replaced by <Subject 1>. He sits on the bench and follows the cigarette-lighting performance, hand gestures and expressions in <Video 1>. The four surrounding source people are replaced separately: <Subject 7> by <Subject 2> at right foreground, <Subject 8> by <Subject 3> at left background, <Subject 9> by <Subject 4> at left foreground, and <Subject 10> by <Subject 5> at right background. Their hands interact with the central performer at the source positions. When the surrounding people rise, move apart and leave the frame, each assigned target follows only their own source track and leaves with that person. The central performer remains <Subject 1> as they lean forward, stand, turn and move across the stage following <Video 1>. At the end of this source action, the raised hand is empty and its bare index finger extends to point, following the exact hand shape, orientation and timing in <Video 1>. The earlier cigarette-lighting action ends at the source moment; objects remain only where and when they are actually visible in the source. Preserve this main person's target face, hair, clothing and worn accessories through the head and body turn. Keep each target's appearance separate during overlap and occlusion. Render only people visible in the source at each moment. Reference pictures supply appearance only; the environment, props, lighting, camera and action come from <Video 1>. Opening continuation guides establish the inherited pose and composition.\n\noverall_soundscape:\nNo additional dialogue or sound effects. The original source soundtrack is restored during assembly.\n\nnon_diegetic_music:\nNo additional music.\n",
+        "use_guides": true,
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+        "guide_last_frame": 117,
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+          "type": "INT",
+          "widget": {
+            "name": "fps"
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+        {
+          "name": "raw_frames",
+          "type": "IMAGE",
+          "links": [
+            10077
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+        },
+        {
+          "name": "frames",
+          "type": "IMAGE",
+          "links": []
+        },
+        {
+          "name": "video",
+          "type": "VIDEO",
+          "links": [
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+        }
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+      "title": "D · forward",
+      "properties": {
+        "Node name for S&R": "5c86a69e-989e-46c5-88f7-54c95d4da8d3",
+        "previewExposures": []
+      },
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+      "inputs": [
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+          "localized_name": "video",
+          "name": "video",
+          "type": "VIDEO",
+          "link": 10119
+        },
+        {
+          "localized_name": "filename_prefix",
+          "name": "filename_prefix",
+          "type": "STRING",
+          "widget": {
+            "name": "filename_prefix"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "format",
+          "name": "format",
+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
+            "name": "format"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "codec",
+          "name": "format.codec",
+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
+            "name": "format.codec"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "codec",
+          "name": "codec",
+          "shape": 7,
+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
+            "name": "codec"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "video",
+          "name": "video",
+          "type": "VIDEO",
+          "links": [
+            10094
+          ]
+        }
+      ],
+      "title": "A · generated preview",
+      "properties": {
+        "Node name for S&R": "SaveVideo"
+      },
+      "widgets_values": [
+        "H3/segments/A",
+        "auto",
+        "auto",
+        "auto"
+      ],
+      "widgets_values_named": {
+        "filename_prefix": "H3/segments/A",
+        "format": "auto",
+        "format.codec": "auto",
+        "codec": "auto"
+      }
+    },
+    {
+      "id": 10086,
+      "type": "SaveVideo",
+      "pos": [
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+        5444
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+      "size": [
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+        460
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+      "flags": {},
+      "order": 49,
+      "mode": 0,
+      "inputs": [
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+          "localized_name": "video",
+          "name": "video",
+          "type": "VIDEO",
+          "link": 10120
+        },
+        {
+          "localized_name": "filename_prefix",
+          "name": "filename_prefix",
+          "type": "STRING",
+          "widget": {
+            "name": "filename_prefix"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "format",
+          "name": "format",
+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
+            "name": "format"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "codec",
+          "name": "format.codec",
+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
+            "name": "format.codec"
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+          "link": null
+        },
+        {
+          "localized_name": "codec",
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+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
+            "name": "codec"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "video",
+          "name": "video",
+          "type": "VIDEO",
+          "links": [
+            10096
+          ]
+        }
+      ],
+      "title": "C · generated preview",
+      "properties": {
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+      "widgets_values": [
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+        "auto",
+        "auto",
+        "auto"
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+      "widgets_values_named": {
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+        "format": "auto",
+        "format.codec": "auto",
+        "codec": "auto"
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+      "type": "SaveVideo",
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+          "name": "video",
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+          "link": 10121
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+          "name": "filename_prefix",
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+          "name": "format",
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+          "widget": {
+            "name": "format"
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+          "link": null
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+        {
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+          "name": "format.codec",
+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
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+          "link": null
+        },
+        {
+          "localized_name": "codec",
+          "name": "codec",
+          "shape": 7,
+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
+            "name": "codec"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "video",
+          "name": "video",
+          "type": "VIDEO",
+          "links": [
+            10097
+          ]
+        }
+      ],
+      "title": "D · generated preview",
+      "properties": {
+        "Node name for S&R": "SaveVideo"
+      },
+      "widgets_values": [
+        "H3/segments/D",
+        "auto",
+        "auto",
+        "auto"
+      ],
+      "widgets_values_named": {
+        "filename_prefix": "H3/segments/D",
+        "format": "auto",
+        "format.codec": "auto",
+        "codec": "auto"
+      }
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+      "id": 10088,
+      "type": "SaveVideo",
+      "pos": [
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+        5444
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+      "size": [
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+        460
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+      "flags": {},
+      "order": 52,
+      "mode": 0,
+      "inputs": [
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+          "localized_name": "video",
+          "name": "video",
+          "type": "VIDEO",
+          "link": 10122
+        },
+        {
+          "localized_name": "filename_prefix",
+          "name": "filename_prefix",
+          "type": "STRING",
+          "widget": {
+            "name": "filename_prefix"
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+          "link": null
+        },
+        {
+          "localized_name": "format",
+          "name": "format",
+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
+            "name": "format"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "codec",
+          "name": "format.codec",
+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
+            "name": "format.codec"
+          },
+          "link": null
+        },
+        {
+          "localized_name": "codec",
+          "name": "codec",
+          "shape": 7,
+          "type": "COMFY_DYNAMICCOMBO_V3",
+          "widget": {
+            "name": "codec"
+          },
+          "link": null
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "video",
+          "name": "video",
+          "type": "VIDEO",
+          "links": [
+            10098
+          ]
+        }
+      ],
+      "title": "E · generated preview",
+      "properties": {
+        "Node name for S&R": "SaveVideo"
+      },
+      "widgets_values": [
+        "H3/segments/E",
+        "auto",
+        "auto",
+        "auto"
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+      "widgets_values_named": {
+        "filename_prefix": "H3/segments/E",
+        "format": "auto",
+        "format.codec": "auto",
+        "codec": "auto"
+      }
+    },
+    {
+      "id": 10620,
+      "type": "Reroute",
+      "pos": [
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+      "size": [
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+      "flags": {},
+      "order": 26,
+      "mode": 0,
+      "inputs": [
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+          "name": "",
+          "type": "*",
+          "link": 17222
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10002
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+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10621,
+      "type": "Reroute",
+      "pos": [
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+      "size": [
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+      "order": 31,
+      "mode": 0,
+      "inputs": [
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+          "name": "",
+          "type": "*",
+          "link": 17223
+        }
+      ],
+      "outputs": [
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+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10003
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10622,
+      "type": "Reroute",
+      "pos": [
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+      "size": [
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+      "flags": {},
+      "order": 33,
+      "mode": 0,
+      "inputs": [
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+          "name": "",
+          "type": "*",
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+        }
+      ],
+      "outputs": [
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+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10004
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10623,
+      "type": "Reroute",
+      "pos": [
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+      "size": [
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+      ],
+      "flags": {},
+      "order": 35,
+      "mode": 0,
+      "inputs": [
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+          "name": "",
+          "type": "*",
+          "link": 17225
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10005
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10624,
+      "type": "Reroute",
+      "pos": [
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+        4288
+      ],
+      "size": [
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+      ],
+      "flags": {},
+      "order": 37,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "",
+          "type": "*",
+          "link": 17226
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10006
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10626,
+      "type": "Reroute",
+      "pos": [
+        780,
+        4144
+      ],
+      "size": [
+        75,
+        26
+      ],
+      "flags": {},
+      "order": 27,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "",
+          "type": "*",
+          "link": 17227
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10026
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10628,
+      "type": "Reroute",
+      "pos": [
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+        4144
+      ],
+      "size": [
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+        26
+      ],
+      "flags": {},
+      "order": 28,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "",
+          "type": "*",
+          "link": 17228
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10045
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10629,
+      "type": "Reroute",
+      "pos": [
+        1560,
+        4180
+      ],
+      "size": [
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+        26
+      ],
+      "flags": {},
+      "order": 32,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "",
+          "type": "*",
+          "link": 17229
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10046
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10630,
+      "type": "Reroute",
+      "pos": [
+        1560,
+        4216
+      ],
+      "size": [
+        75,
+        26
+      ],
+      "flags": {},
+      "order": 34,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "",
+          "type": "*",
+          "link": 17230
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10047
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10631,
+      "type": "Reroute",
+      "pos": [
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+      "size": [
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+      "flags": {},
+      "order": 36,
+      "mode": 0,
+      "inputs": [
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+          "name": "",
+          "type": "*",
+          "link": 17231
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10048
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10632,
+      "type": "Reroute",
+      "pos": [
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+        4288
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+      "size": [
+        75,
+        26
+      ],
+      "flags": {},
+      "order": 38,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "",
+          "type": "*",
+          "link": 17232
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10049
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10634,
+      "type": "Reroute",
+      "pos": [
+        2340,
+        4144
+      ],
+      "size": [
+        75,
+        26
+      ],
+      "flags": {},
+      "order": 29,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "",
+          "type": "*",
+          "link": 17233
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10066
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10636,
+      "type": "Reroute",
+      "pos": [
+        3120,
+        4144
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+      "size": [
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+        26
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+      "flags": {},
+      "order": 30,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "",
+          "type": "*",
+          "link": 17234
+        }
+      ],
+      "outputs": [
+        {
+          "name": "",
+          "type": "IMAGE",
+          "links": [
+            10083
+          ]
+        }
+      ],
+      "properties": {
+        "showOutputText": false,
+        "horizontal": false
+      }
+    },
+    {
+      "id": 10642,
+      "type": "MarkdownNote",
+      "pos": [
+        -39,
+        2658
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+      "size": [
+        866,
+        97
+      ],
+      "flags": {},
+      "order": 20,
+      "mode": 0,
+      "inputs": [],
+      "outputs": [],
+      "title": "Case03 · Multiple-Character Replacement Guide",
+      "properties": {},
+      "widgets_values": [
+        "This case is tailored to the supplied 27-second video; it is not a general-purpose replacement workflow.\n\n1. Replace the character images and each segment's source video.\n2. Update each segment's prompt: B/C map five people; A/D/E replace only the central performer.\n3. For a different video, recalculate segment durations, guide indices and trim/keep frames, and replace the assembly soundtrack. Current frame settings assume 24 FPS.\n4. Check each segment preview before accepting the assembled result."
+      ],
+      "widgets_values_named": {
+        "text": "This case is tailored to the supplied 27-second video; it is not a general-purpose replacement workflow.\n\n1. Replace the character images and each segment's source video.\n2. Update each segment's prompt: B/C map five people; A/D/E replace only the central performer.\n3. For a different video, recalculate segment durations, guide indices and trim/keep frames, and replace the assembly soundtrack. Current frame settings assume 24 FPS.\n4. Check each segment preview before accepting the assembled result."
+      },
+      "color": "#223",
+      "bgcolor": "#335"
+    },
+    {
+      "id": 10643,
+      "type": "MarkdownNote",
+      "pos": [
+        -409,
+        2071
+      ],
+      "size": [
+        276,
+        265
+      ],
+      "flags": {},
+      "order": 21,
+      "mode": 0,
+      "inputs": [],
+      "outputs": [],
+      "title": "Note: Size Settings Reference",
+      "properties": {},
+      "widgets_values": [
+        "| Aspect | Output (multiple=32) |\n|---|---|\n| 16:9 | 608 x 352 |\n| 16:9 | 736 x 416 |\n| 16:9 | 864 x 480 |\n| 16:9 | 960 x 544 |\n| 16:9 | 1056 x 608 |\n| 16:9 | 1152 x 640 |\n| 16:9 | 1216 x 672 |\n| 16:9 | 1280 x 736 |\n| 16:9 | 1344 x 768 |\n"
+      ],
+      "widgets_values_named": {
+        "text": "| Aspect | Output (multiple=32) |\n|---|---|\n| 16:9 | 608 x 352 |\n| 16:9 | 736 x 416 |\n| 16:9 | 864 x 480 |\n| 16:9 | 960 x 544 |\n| 16:9 | 1056 x 608 |\n| 16:9 | 1152 x 640 |\n| 16:9 | 1216 x 672 |\n| 16:9 | 1280 x 736 |\n| 16:9 | 1344 x 768 |\n"
+      },
+      "color": "#232",
+      "bgcolor": "#353"
+    }
+  ],
+  "links": [
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+      "VIDEO"
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new file mode 100644
index 00000000..ae6ddfe7
--- /dev/null
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+          "type": "FLOAT",
+          "widget": {
+            "name": "duration"
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+          "link": 17247
+        }
+      ],
+      "outputs": [
+        {
+          "localized_name": "video",
+          "name": "video",
+          "type": "VIDEO",
+          "links": [
+            30
+          ]
+        }
+      ],
+      "properties": {
+        "Node name for S&R": "VLLMOmniGenerateVideo"
+      },
+      "widgets_values": [
+        "http://localhost:8000/v1",
+        "MiniMaxAI/MiniMax-H3",
+        "subject_definitions:\n<Subject 1>: The target person in <Picture 1>, defining their face, hair, clothing, materials, proportions and worn accessories.\n<Subject 2>: The central source performer originally wearing a pale suit in <Video 1>, whose appearance is replaced by <Subject 1>.\n<Video 1>: The source performance, defining each person's movements, expressions, interactions, visibility, camera, environment and timing.\n\nsummary:\n[video editing + reference generation] Edit <Video 1> by replacing exactly one existing person: <Subject 2> with <Subject 1>. Preserve every other person's original appearance and the source performance.\n\nretention_analysis:\n<Subject 1>: fully_preserved — preserve the identity and visible appearance defined by <Picture 1>, including clothing materials and the presence or absence of worn accessories, throughout the clip.\n<Subject 2>: attribute_transfer — transfer only this source person's pose, actions, expressions, position and visibility to <Subject 1>; replace their face, hair, clothing and worn accessories.\n<Video 1>: partially_preserved — retain the source number of people, unassigned people's original appearances, interactions, handheld props, scene, lighting, camera, existing cuts and timing.\n\ndetailed_description:\n[Shot 1] The central performer <Subject 2> becomes <Subject 1>, using only the appearance in <Picture 1>. Follow this source person's actions and expressions once in the original order and speed. Adapt the movement naturally to the target person's proportions while preserving the source interactions and timing.\n\nExactly one source-person track is replaced. The identity in <Picture 1> belongs only to the selected central performer. Every other person retains their own original face, hair, clothing and worn accessories, including during proximity, overlap and occlusion. Do not duplicate or blend the target identity, or transfer appearance features between people.\n\nTrack the selected performer through turns, crossings, occlusions and existing source cuts. Their assignment stays fixed when their screen position changes. When they leave the view, the replacement leaves with them; when they reappear, retain the same target identity and outfit. Render only the people visible in the source at each moment. Reference pictures supply appearance only; preserve the source environment, lighting, perspective, contact, shadows, handheld props and camera. Do not add actions, people or cuts, loop the opening, or revert to the original performer's appearance.\n\noverall_soundscape:\nReference the timing and environmental sound characteristics of <Video 1>. Do not add dialogue or unrelated sound effects. Exact source soundtrack preservation requires separate audio handling.\n\nnon_diegetic_music:\nReference any existing music in <Video 1>; do not introduce unrelated music.",
+        "",
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+      "widgets_values_named": {
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+          "widget": {
+            "name": "codec"
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+          "link": null
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+        {
+          "localized_name": "video",
+          "name": "video",
+          "type": "VIDEO",
+          "links": []
+        }
+      ],
+      "properties": {},
+      "widgets_values": [
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+        "mp4",
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+        "auto"
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+        "1. Replace the character image and source video.\n2. Update the prompt to identify exactly one source person to replace; Picture 1 defines their new appearance.\n3. Set mode, service, LoRA, width, height and fps in Global Control.\n4. Run and check the saved preview."
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+        "text": "1. Enable the case you want to run; mute the others.\n2. Replace its character images and source video(s).\n3. Update the prompt to say which source person each picture replaces. Keep the existing prompt structure.\n4. In Global Control, set mode, service URL, model, LoRA paths, width, height and fps.\n5. Run and check the preview.\n\nCase03: when changing source clips, update each segment's prompt, duration and guide/trim frames. Its current frame settings use 24 FPS."
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+      "inputs": [],
+      "outputs": [],
+      "title": "Single-Character Replacement Guide",
+      "properties": {},
+      "widgets_values": [
+        "1. Replace the character image and source video.\n2. In the prompt, change <Subject 2> to describe the source person to replace; <Picture 1> defines their new appearance.\n3. Set width, height and fps in Global Control, then run this case."
+      ],
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+        "text": "1. Replace the character image and source video.\n2. In the prompt, change <Subject 2> to describe the source person to replace; <Picture 1> defines their new appearance.\n3. Set width, height and fps in Global Control, then run this case."
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+      ],
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+        "text": "| Aspect | Output (multiple=32) |\n|---|---|\n| 16:9 | 608 x 352 |\n| 16:9 | 736 x 416 |\n| 16:9 | 864 x 480 |\n| 16:9 | 960 x 544 |\n| 16:9 | 1056 x 608 |\n| 16:9 | 1152 x 640 |\n| 16:9 | 1216 x 672 |\n| 16:9 | 1280 x 736 |\n| 16:9 | 1344 x 768 |\n"
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diff --git a/packages/agent/skills/character-replacement/prompt-writing.md b/packages/agent/skills/character-replacement/prompt-writing.md
new file mode 100644
index 00000000..7311b07d
--- /dev/null
+++ b/packages/agent/skills/character-replacement/prompt-writing.md
@@ -0,0 +1,64 @@
+# Prompt Writing
+
+Produce an explicit appearance-to-source-person mapping. Keep the user's images, source video and prompt as the input boundary. Prompt-only work ends with the prompt or requested workflow edit; it does not start generation or restart a service.
+
+Prompt-format dependency: read the official [MiniMax H3 prompt-writing skill](https://github.com/MiniMax-AI/MiniMax-H3/tree/main/skills/h3-prompt-writing) and follow its Ref2VA instructions and referenced files. Local installation is optional; read the repository files directly when the skill is not installed. The upstream reference is currently `references/ref-en.txt`; `ref-format.md` belongs to the local adaptation, not the upstream skill. Use English for the rendering prompt and the user's language for the explanation.
+
+## Planning prerequisite
+
+For new footage or a new multi-segment workflow, complete the vision-based shot/person timelines and segment plan in [video-segment.md](video-segment.md) before writing prompts. Use each planned range's actual visible people and actions, including later entrants. For an existing segment correction, inspect its footage and preserve the plan unless a boundary or mapping needs revision.
+
+## Establish the mapping
+
+Inspect the supplied images, source video and actual reference connections before assigning people. If the media cannot be inspected, state that limitation and use only the user's explicit mapping; ask when the selected source person is ambiguous.
+
+- Number `<Picture N>` by actual request input order, not canvas position or filename.
+- Give each target appearance and each selected source-person track separate `<Subject N>` definitions. For two replacements, targets 1/2 and source tracks 3/4 are sufficient. Define only supplied references and selected source people.
+- Identify source people with visible features, roles and actions. Use initial position as an aid, then preserve the same person's track as they move. Avoid celebrity or fictional-character names as identity cues.
+- Write an explicit one-to-one mapping. A replacement count means selected source people, not the total people visible in the scene. Preserve unselected people.
+- Replace example-specific descriptions when the source changes. “Central performer wearing a pale suit” and “right foreground person” describe one example, not a universal person-selection rule. First-appearance order alone is often ambiguous.
+
+## Compile the prompt
+
+Keep the six sections in order:
+
+1. `subject_definitions`: targets from pictures, source-person tracks from video, and the source video's role.
+2. `summary`: edit the source video, state the replacement count and each mapping.
+3. `retention_analysis`: target identity/appearance `fully_preserved`; source tracks `attribute_transfer` for motion, pose, expression and visibility; video `partially_preserved` for scene, camera, interactions and timing.
+4. `detailed_description`: `[Shot 1]` followed by playback-ordered actions and identity constraints. Describe real source cuts only when known.
+5. `overall_soundscape`: retain or reference the requested source sound properties.
+6. `non_diegetic_music`: follow the user's music policy.
+
+Use a compact shared constraint paragraph rather than repeating the same rule in all sections:
+
+> Each target appearance belongs to exactly one assigned source-person track. Keep each person's own face, hair, clothing, materials and worn accessories throughout turns, crossings and occlusion. Preserve both the presence and absence of these features in the assigned picture. When a person leaves the view, their replacement leaves with them; on re-entry, restore the same assigned identity. Every unassigned person retains their original appearance. Render only people visible in the source at each moment. Pictures supply appearance; the source video supplies actions, handheld props, scene, camera, lighting and timing.
+
+Adapt this paragraph to the observed issue. Avoid accumulating redundant negative instructions or naming an unwanted accessory that is absent from the inputs. Preserve source interactions and natural movement rather than freezing a reference pose. Exact soundtrack copying requires actual audio handling, not prompt wording.
+
+## Single and multiple people
+
+Single-person mapping skeleton (replace the bracketed description before delivery):
+
+```text
+<Subject 1>: The target person in <Picture 1>, defining their appearance.
+<Subject 2>: [Unambiguous visible description of the selected source person] in <Video 1>.
+Mapping: replace <Subject 2> with <Subject 1>; preserve all other people.
+```
+
+For two people, define two target appearances and two source tracks, then state `<Subject 3> → <Subject 1>` and `<Subject 4> → <Subject 2>`. Scale to the actual reference count and backend limit, not a fixed eight- or ten-subject template. Keep faces, outfits and accessories separate even during close interaction. Multi-view images depict one target person; they do not add people to the scene.
+
+## Segment prompts
+
+For segmented work, use the plan from [video-segment.md](video-segment.md). Inspect each segment's actual inputs independently: define only its supplied references and selected source tracks. Appearance references define identity; continuation guides establish inherited composition and pose. State what remains visible and what exits when that affects identity.
+
+## Diagnose and verify
+
+- **Mixed or duplicated identity:** check image order and effective request inputs first; clarify the two source tracks and exclusive mappings before adding prose.
+- **Accessory leakage:** distinguish target appearance from source motion and props; preserve the assigned reference's features, including their absence. A bad frame suggests leakage but does not by itself establish its cause.
+- **Late identity drift:** inspect departures, occlusion, cuts and continuation boundaries; bind identity to the person rather than their current screen position.
+- **Identity retained in occluded close-ups:** if generated close-ups retain the source identity under hair, hand or lighting occlusion, the segment-level mapping may need shot-specific appearance cues. In `detailed_description`, name the assigned target at that shot and state which picture features must be visible there (the target's own hair length and color, face, glasses or their absence), e.g. "the extreme close-up shows <Subject 1> with the short light-brown hair and face from <Picture 1>". Keep it a positive description of the assigned appearance; do not enumerate the source features being removed.
+- **Scope:** background removal, face anonymization and automatic appearance description are separate features. Do not introduce them to repair a prompt unless the user requests them.
+
+Check all labels resolve, mappings are one-to-one, and no placeholders or unused references remain. When editing a workflow, keep positional and named prompt values consistent where both exist; preserve unrelated fields and user layout. Usage Guide notes should only say which media, mappings and controls to change.
+
+For an authorized comparison, keep inputs, model, seed, LoRA and sampling fixed while changing the prompt. Inspect both identities together, occlusion and the reported failure interval; inspect frame-by-frame around the defect when needed. Report prompt edits separately from observed generation results. Health checks, valid JSON and successful decoding do not establish character-replacement quality.
diff --git a/packages/agent/skills/character-replacement/video-segment.md b/packages/agent/skills/character-replacement/video-segment.md
new file mode 100644
index 00000000..12643247
--- /dev/null
+++ b/packages/agent/skills/character-replacement/video-segment.md
@@ -0,0 +1,70 @@
+# Video Segment
+
+Use this guide when dividing source video into character-replacement clips or revising a continuation workflow. Derive the plan from the actual video and current backend; the existing Case03 is a scene-specific example, not a general-purpose five-segment recipe.
+
+## Visual inspection comes first
+
+First probe the source and create a 24-FPS constant-frame-rate working copy unless the user explicitly requests another FPS. Use frame-rate conversion (for example, FFmpeg `fps=24`), not playback-speed changes. Preserve the original media and soundtrack; verify duration and audio alignment. Inspect this working copy and use its frame timeline consistently for source cuts, segment boundaries and guide/trim arithmetic. If already confirmed 24-FPS CFR, reuse it without another conversion.
+
+Use a vision-capable model to examine the source footage before choosing segments. Inspect the reference images too, then distinguish their target appearances from the source people. If direct video viewing is unavailable, extract timestamped frames or contact sheets with a local media tool and inspect the images visually. Metadata and scene-change scores help navigation; they do not establish person identity or action continuity.
+
+Survey the full video, not only the first frame. Inspect more densely around shot changes, entrances, exits, crossings, heavy occlusion and interactions involving multiple people. Play or inspect consecutive frames around a proposed boundary; sparse thumbnails alone can miss a person entering briefly or exchanging positions. Record uncertain observations and inspect additional frames instead of guessing. If visual inspection is unavailable, report the blocked planning step rather than presenting a visually verified plan.
+
+Create two linked records before selecting boundaries:
+
+- Shot timeline: source time ranges, actual cuts, camera/composition changes and the action within each shot.
+- Person visibility timeline: stable source-track IDs, distinguishing visual cues, first appearance, visible intervals, occlusion, re-entry, departure and interactions with other tracks. Track IDs remain stable across position changes and across cuts only when identity is supported by the footage; record ambiguity explicitly.
+
+Inspect duration, FPS and frame count. For variable-frame-rate media, use timestamps or explicitly normalize the working clip; do not assume frame index equals time multiplied by nominal FPS. Reference numbering follows actual input order; source-track IDs are independent of reference numbering and screen position.
+
+## Choose segments for multiple replacements
+
+Plan character-replacement segments around 5 seconds by default. A continuous source shot is not a reason to keep an 8–12-second generation intact: divide it at a stable action boundary and use continuation where needed. Small boundary adjustments and model-alignment padding are acceptable; record source/retained duration separately from generated duration and guide overlap. If preserving an interaction requires a materially longer segment, explain the reason and verify the entire action sequence against the source before accepting it. Identity stability alone cannot justify the exception. This is a workflow quality constraint, not a claimed model duration limit.
+
+Choose boundaries using the shot timeline and the changing set of selected people. Keep coherent actions and distinguishable identities while meeting the short-segment target; do not minimize segment count at the expense of motion fidelity. Equal-duration slicing and splitting at every entrance or exit are not defaults.
+
+### Bad case: stable faces, repeated action
+
+In the goodnight two-person replacement, the second segment retained source range `[8.500, 20.125)` (11.625 seconds) from a single continuous shot and generated 12.25 seconds. The agent reused it despite the 5-second guidance and accepted it because sampled faces stayed consistent. Around 14 seconds in the assembled video, hand gestures repeated or diverged from the source action progression. That position was inside the segment, not an assembly join. The observed failure does not prove duration was its sole cause, but it invalidates “one continuous shot + stable identities” as sufficient acceptance for a long segment.
+
+Instead, plan this interval as roughly two 5–6-second parts at an inspected action boundary, handle continuity explicitly, and compare action order and timing throughout both parts and their join. Shorter segments still require visual acceptance; successful generation or consistent faces are not enough.
+
+| Observed source event | Planning decision |
+|---|---|
+| Several selected people remain identifiable during one continuous action | Keep them in one segment when supported; give each a separate mapping. |
+| A selected person enters later | Include enough source context to identify the entrant. Use an entry-focused segment or a later anchor if needed; do not require every target in the first frame. |
+| Selected people leave and the scene continues with fewer people | Consider a boundary after the departure stabilizes. The next segment maps the people visible anywhere within that segment; departed identities do not migrate to the remaining person. |
+| People cross, overlap or exchange props | Keep the interaction and identity cues together where possible. Avoid a boundary at maximal occlusion or during contact; if a split is unavoidable, carry context on both sides and inspect the join. |
+| A cut changes composition within the same scene | Check person identity on both sides. Split if the new composition needs a different mapping or the backend cannot retain it reliably; otherwise preserve the existing cut in the segment. |
+| A cut introduces a new scene or a discontinuous cast | Prefer an independent segment and anchor; avoid imposing the previous scene through continuation guides. |
+| A person is temporarily occluded and later reappears | Keep the same track if supported by the footage. Occlusion alone does not define a new person or require a split. |
+
+For each candidate segment, list every selected person visible at any point in the range, their local appearance/exit times and the reason for the chosen boundary. A later entrant still needs a reference and mapping. Keep unselected people unchanged. If the selected cast exceeds the running service's reference limit, revise the plan or report the limitation; do not silently omit a target or assume separate edits can be composited without affecting other people.
+
+An identity anchor should make the assigned people identifiable. A later multi-person view may be a better anchor than an opening where people have not entered. Generate outward from the chosen anchor when the workflow supports it. Backward continuation is an optional strategy: deliberately reverse the source, choose guides in that direction and reverse the generated frames back for assembly. Keep generation dependency order separate from chronological assembly order. A later anchor is not proof that reversal will improve quality.
+
+## Produce a concrete plan
+
+Record one row per segment:
+
+| Segment | Source range / shot | Visible selected tracks → pictures | Boundary reason | Direction / dependency | Guide source/range | Generated duration/frames | Keep range | Assembly order |
+|---|---|---|---|---|---|---|---|---|
+
+Use half-open ranges `[start, end)` in the plan; translate them to each node/API's actual inclusive or length-based convention. Distinguish source frames, generated frames, previous-output guide indices and retained assembly frames. Identify the coordinate system for every frame number.
+
+- Compute source duration from the selected source timestamps. For confirmed constant FPS, frame count divided by FPS also gives duration.
+- Calculate required output frames from duration and output FPS, then apply the running model's frame-alignment and minimum-duration constraints. The current `_align_frame_count` helper aligns positive counts to `5 + 17n`; it does not impose a 107-frame minimum or choose FPS. Treat the example's 107-frame minimum and 22-frame guide window (positions 0 and 21) as configuration to verify, not universal model constraints.
+- Mark overlap frames as guidance and retain the intended source action once. Derive trim/keep ranges from output FPS and the chosen overlap; do not copy frame constants from another clip.
+- Select guide indices from the actual preceding frame batch, distinguishing raw generated frames from already trimmed assembly frames. Verify indices stay in bounds and correspond to the intended poses.
+- Account for generated alignment tails explicitly. FPS changes require recalculating frame-based durations, overlaps, guide indices and trims; exposing a shared FPS widget alone does not perform that conversion.
+- Keep the plan's user controls in seconds or source ranges where possible. Derive internal frame arithmetic rather than asking users to guess it.
+
+Case03's B/A/C/D/E order, reverse generation, five-person mappings and 24-FPS frame settings belong to its supplied 27-second scene. New footage needs a new plan; do not reuse its cigarette-lighting, pointing or departure actions as defaults.
+
+## Write and connect segments
+
+Only after the visual timelines and segment plan are complete, write each segment's prompt using [prompt-writing.md](prompt-writing.md). Include segment-local entrance/exit timing only when supported by inspection; map it from global source time and account for reversed generation where applicable. Define only references connected for that segment and maintain the same real-person assignment across segments even if local reference indices change. Preserve the same reference appearance through continuation; guide frames supply inherited pose and composition.
+
+## Handoff to execution
+
+The plan is ready when source ranges cover the requested edit, each selected person has a supported reference mapping, guide indices are in bounds, and trim/keep ranges remove overlap exactly once. Record frame coordinate systems and separate generation dependencies from assembly order. Follow [workflow.md](workflow.md) to prepare inputs, configure/export the ComfyUI graph, execute and review results.
diff --git a/packages/agent/skills/character-replacement/workflow.md b/packages/agent/skills/character-replacement/workflow.md
new file mode 100644
index 00000000..3873ef73
--- /dev/null
+++ b/packages/agent/skills/character-replacement/workflow.md
@@ -0,0 +1,59 @@
+# Workflow
+
+Execute one character-replacement task through ComfyUI. Use [video-segment.md](video-segment.md) for visual analysis and frame planning, and [prompt-writing.md](prompt-writing.md) for prompts. A plan-only or prompt-only request stops before submission.
+
+## 1. Discover the environment
+
+Resolve service addresses in order: explicit user/task configuration, the selected workflow and Global Control for the Omni endpoint, then the ComfyUI launch configuration or active application connection for the ComfyUI endpoint. Ask for unresolved required values instead of scanning arbitrary ports. Do not treat localhost addresses from another task as defaults. Resolve the ComfyUI base URL from task configuration and check `GET /system_stats`. Read `GET /object_info` for the nodes required by the selected template; guide and concatenation nodes are needed only when used. Read effective Global Control settings, including mode, service URL/model, LoRA configuration, resolution, FPS, steps and seed. Preserve the user's choices; server-local LoRA paths are not agent-local paths. Confirm the selected deployment supports the requested combination. For FastH3 + Swap, record the effective model and server revision, inspect whether the serialized request contains a nonzero LoRA, and check adapter activation evidence. A past 400 or later successful job alone cannot establish current support or prove that the adapter took effect; never assume it was silently ignored.
+
+Create a task output directory. Keep agent-local files, ComfyUI input/output paths and Omni server paths distinct. If checking the Omni model listing, resolve `/v1/models` from the configured API base without appending `/v1` twice; generation still goes through ComfyUI nodes.
+
+## 2. Reuse relevant history when available
+
+Look for earlier runs of the same task. Check their inputs, settings and outputs before reuse; successful execution does not establish visual acceptance. Record observed defects as the next run's fix list. A missing history entry does not block a first run.
+
+A previous API prompt can be a baseline when its topology matches the new plan. On versions exposing the standard history tuple, it is stored at `history[prompt_id]["prompt"][2]`; inspect the actual response before using that field. Retrieve reported output files with `GET /view`, passing their filename, subfolder and type. Avoid downloading or reviewing unrelated task outputs.
+
+## 3. Inspect and plan
+
+Probe source resolution, duration, frame count and nominal/average FPS. Before inspecting and planning, normalize a working copy to 24-FPS CFR unless the user explicitly chose another FPS; preserve the original, playback timing and soundtrack. Verify the working copy's duration and frame rate, and use that timeline for all segment calculations. Start with timestamped contact sheets (for example, 1 FPS), then inspect more densely around entrances, occlusion, interactions and cuts. Scene-change detection can suggest candidates; thresholds such as 0.3 or 0.15 are adjustable starting points, not required settings.
+
+Complete the shot/person timelines and segment plan in [video-segment.md](video-segment.md). Apply the roughly 5-second default in `video-segment.md` even within a continuous shot; an old successful history entry does not exempt a long segment from replanning or full motion review. Derive generated and retained frame ranges from actual FPS, model alignment, overlap and generation direction. Check complete source coverage, including the tail. Use independent anchors across real cuts when appropriate; derive continuation guide indices from the specific raw or trimmed frame batch connected as input, excluding unwanted alignment tails.
+
+## 4. Prepare inputs and configure the graph
+
+Create a task-specific copy of the simple or Agentic template linked in `SKILL.md`. Preserve the original and reuse Global Control, existing nodes and one shared segment-subgraph definition. Read actual node/subgraph input definitions and widget values rather than hardcoding their positions.
+
+Prepare frame-exact source clips at the chosen FPS and a reference size accepted by the deployment. Keep aspect ratio and verify any scaling or padding. Re-probe clips and inspect first/last frames against the plan. Keep the source soundtrack separately if the final edit must retain it. Check reference-duration limits before cutting; extend undersized clips within the same shot where possible and account for added context in trimming.
+
+For remote ComfyUI, confirm the installed media-upload contract, including MP4/M4A acceptance and input/output retrieval through `/view`. Record the tested server version and minimal upload/retrieval example in task artifacts so later runs can reuse verified behavior. The standard `POST /upload/image` accepts a multipart `image` field and returns `name`, `subfolder` and `type`; use the returned input-relative path in loader widgets. For shared local storage, resolve the configured input directory before copying. Version filenames rather than overwriting inputs or results.
+
+Write each segment's prompt using [prompt-writing.md](prompt-writing.md), following the user's replacement scope. Apply the user's explicit appearance scope. The bundled template replaces full appearance; retaining source costumes while changing face/hair is a different policy. If the request leaves this choice materially ambiguous, ask one focused question rather than choosing from the scene or copying an old prompt without checking intent. Difficult close-ups or small figures may benefit from explicit positive appearance cues, which must be checked in generated results.
+
+Set references, duration, guides, direction and trim/keep ranges per instance. Connect continuation dependencies explicitly and keep generated previews before concatenation. Reuse media nodes for source-order assembly and requested audio. Check socket types, including INT generation FPS versus FLOAT Create Video FPS. Keep named and positional widget values consistent where both exist; determine their actual export precedence from the installed frontend or exported API graph rather than guessing. Read subgraph instance/inner-node mappings from export; IDs such as `10078:98` are examples, not stable identifiers. `raw_frames` feeds a batch-length selection: a value such as 4096 is a finite upper bound, not a special “all frames” sentinel. Ensure it covers the planned frame count.
+
+## 5. Export, submit and monitor
+
+Save editable workflow JSON and export an executable API prompt through a verified facility supported by the installed ComfyUI frontend. Check native subgraphs are expanded and all required output dependencies are present. A matching history prompt is an optional baseline, not a substitute for validating a changed topology. If no verified export is accessible, provide the prepared workflow and request a one-time API-format export; do not invent a conversion API or bypass ComfyUI with direct Omni generation requests.
+
+Submit `POST /prompt` with `{"prompt": <api graph>}`. Store the returned `prompt_id` and inspect HTTP errors and `node_errors`. Follow `/history/{prompt_id}`, `/queue` and execution events as available. Missing history alone cannot distinguish queued, running, unaccepted or cleared work. Confirm acceptance before retrying a lost submission response, and confirm terminal status before treating outputs as complete. Existing Omni nodes own downstream request serialization and polling.
+
+When changing an open workflow, preserve current edits and verify the loaded canvas as well as the saved file; an unsaved canvas can overwrite a disk-only change.
+
+## 6. Check and deliver
+
+Retrieve output files reported by history. Check frame count, duration, FPS, expected audio and full decoding. Visually review segment starts/ends, joins, selected and unselected people, close-ups, wide shots, clothing/accessories and soundtrack alignment. Inspect reported defect intervals frame-by-frame where needed.
+
+Deliver the playable result and remaining defects. Save the input mapping, segment plan, prompts, editable workflow, executable graph, execution records and raw outputs for inspection and resume. Successful execution and decoding are separate from visual acceptance.
+
+## 7. Iterate on the affected dependency chain
+
+Change one variable per comparison and retain previous outputs. Editing a segment can invalidate that segment and every downstream segment using its guides, plus assembly. Independent unchanged branches may reuse cache only if it is available and their effective inputs are unchanged. Inspect the actual rerun scope; do not promise that only one segment will regenerate. When necessary, reconnect saved successful outputs explicitly.
+
+Use versioned output prefixes only on affected outputs where possible; changing every prefix can invalidate otherwise reusable save nodes. Retry within the agreed budget and report persistent defects rather than silently changing the model, replacement scope or reference images.
+
+## First-run qualification and history backup
+
+Validate the execution path once with empty history and new inputs. A workflow-to-API exporter/helper must handle native subgraphs, changed instance counts and current widget values without a matching prior run. A documented manual export handoff is a remaining automation limitation, not a completed one-sentence flow.
+
+Before an authorized history clear, wait for an idle queue, save the complete `GET /history` response and verify it can be parsed with the same prompt IDs. Preserve referenced media separately if it must survive file cleanup; history JSON contains metadata and graphs, not media bytes. On versions supporting it, `POST /history` with `{"clear": true}` clears execution history; verify `GET /history` is empty afterward. This does not clear execution cache or delete source/output media. There is no assumed public history-import API: archived graphs may be inspected or resubmitted, but resubmission is a new execution, not restoration of history.
diff --git a/src/canvas/AssistantPanel.tsx b/src/canvas/AssistantPanel.tsx
index 18caabc8..a90373c9 100644
--- a/src/canvas/AssistantPanel.tsx
+++ b/src/canvas/AssistantPanel.tsx
@@ -7,6 +7,7 @@ import type { BackendModels } from "../backend/models";
 import { loadReferenceCatalog } from "../backend/referenceCatalog.ts";
 import "./assistant-panel.css";
 import { ChoicePicker, ModelPicker } from "./AssistantPickers";
+import { SkillPicker } from "./SkillPicker";
 import { CanvasIcon } from "./CanvasIcon";
 import {
   currentReferences,
@@ -88,6 +89,7 @@ export function AssistantPanel({
   const uploads = useReferenceUploads(documentId);
   const projectReferences = useProjectMentionAssets(documentId);
   const editor = useRef<ChatReferenceEditorHandle>(null);
+  const [slashQuery, setSlashQuery] = useState<string | null>(null);
   const [dragOver, setDragOver] = useState(false);
   const log = useRef<HTMLDivElement>(null);
   const fileInput = useRef<HTMLInputElement>(null);
@@ -349,6 +351,8 @@ export function AssistantPanel({
                   ).map((part, index) =>
                     part.type === "text" ? (
                       part.text
+                    ) : part.type === "skill" ? (
+                      <span key={index} className="cw-chat-skill-token">/{part.name}</span>
                     ) : (
                       <span
                         key={index}
@@ -489,13 +493,13 @@ export function AssistantPanel({
           <ChatReferenceEditor
             key={documentId}
             ref={editor}
+            onSlashChange={setSlashQuery}
+            skillsEnabled
             scope={documentId}
-            value={referenceContent(
-              value.draft,
-              value.assets.map((asset) => asset.id),
-              value.assets,
-              value.draftContent,
-            )}
+            value={(() => {
+              const content = referenceContent(value.draft, value.assets.map(asset => asset.id), value.assets, value.draftContent);
+              return value.skills?.length && !content.some(part => part.type === "skill") ? [...content, ...value.skills.map(name => ({type: "skill" as const, name}))] : content;
+            })()}
             assets={chat.referenceAssets}
             previews={assetPreviews}
             options={mentionOptions}
@@ -602,6 +606,13 @@ export function AssistantPanel({
             >
               @
             </button>
+            <SkillPicker
+              projectId={documentId}
+              selected={value.skills ?? []}
+              slashQuery={slashQuery}
+              disabled={referenceDisabled || chat.sending}
+              onChange={(skills, fromSlash) => editor.current?.setSkill(skills[0] ?? null, fromSlash)}
+            />
             <ModelPicker
               models={catalog.models}
               selections={value.modelSelections}
diff --git a/src/canvas/ChatReferenceEditor.tsx b/src/canvas/ChatReferenceEditor.tsx
index 6a00093f..861620c3 100644
--- a/src/canvas/ChatReferenceEditor.tsx
+++ b/src/canvas/ChatReferenceEditor.tsx
@@ -37,6 +37,7 @@ import type { ReferenceRules } from "./chatReferenceInsertion.ts";
 import {
   mentionCategories,
   mentionRange,
+  slashRange,
   REFERENCE_CATEGORIES,
   type MentionOption,
   type ReferenceCategory,
@@ -47,6 +48,7 @@ import { assetDisplayName } from "./assetNames.ts";
 export interface ChatReferenceEditorHandle {
   focus: () => void;
   openPicker: () => void;
+  setSkill: (name: string | null, fromSlash?: boolean) => void;
   caret: () => Caret;
   removeSource: (nodeId: string) => boolean;
   insert: (
@@ -74,6 +76,8 @@ interface Props {
   onSubmit: () => void;
   onPasteFiles: (files: File[]) => void;
   onConfirmPending?: (caret: Caret) => void;
+  onSlashChange?: (query: string | null) => void;
+  skillsEnabled?: boolean;
   label?: string;
   placeholder?: string;
   className?: string;
@@ -114,8 +118,10 @@ export function ChatReferenceEditor({
   onSubmit,
   onPasteFiles,
   onConfirmPending,
+  onSlashChange,
+  skillsEnabled = false,
   label = "消息内容",
-  placeholder = "输入想法、剧本或上传参考，输入 @ 引用项目素材，和 Agent 一起创作",
+  placeholder = "输入想法、剧本或上传参考，支持 / 使用技能，输入 @ 引用项目素材，和 Agent 一起创作",
   className = "",
   autoGrow = false,
   referenceRules = defaultRules,
@@ -132,6 +138,7 @@ export function ChatReferenceEditor({
   const iconTemplates = useRef<HTMLSpanElement>(null);
   const current = useRef(value),
     saved = useRef<Caret>({ start: 0, end: 0 });
+  const slash = useRef<ReturnType<typeof slashRange>>(null);
   const past = useRef<Snapshot[]>([]),
     future = useRef<Snapshot[]>([]),
     lastEdit = useRef(0);
@@ -147,22 +154,8 @@ export function ChatReferenceEditor({
     [active, setActive] = useState(0);
   const [busy, setBusy] = useState(false),
     [notice, setNotice] = useState("");
-  const latest = useRef({
-    onChange,
-    onChoose,
-    onOpen,
-    assets,
-    previews,
-    visibleReferenceNodeIds,
-  });
-  latest.current = {
-    onChange,
-    onChoose,
-    onOpen,
-    assets,
-    previews,
-    visibleReferenceNodeIds,
-  };
+  const latest = useRef({onChange, onChoose, onOpen, assets, previews, visibleReferenceNodeIds, onSlashChange});
+  latest.current = {onChange, onChoose, onOpen, assets, previews, visibleReferenceNodeIds, onSlashChange};
   const listId = useId();
   const categories = mentionCategories(options);
   const effectiveCategory = categories.includes(category) ? category : "all";
@@ -254,7 +247,15 @@ export function ChatReferenceEditor({
     for (const part of blank ? [] : content) {
       if (part.type === "text")
         fragment.append(document.createTextNode(part.text));
-      else {
+      else if (part.type === "skill") {
+        const chip = document.createElement("span");
+        chip.contentEditable = "false";
+        chip.dataset.skill = part.name;
+        chip.className = "cw-chat-skill-token";
+        chip.textContent = `/${part.name}`;
+        chip.setAttribute("aria-label", `技能：${part.name}`);
+        fragment.append(chip);
+      } else {
         const chip = document.createElement("span");
         chip.contentEditable = "false";
         chip.dataset.reference = JSON.stringify(part);
@@ -296,7 +297,7 @@ export function ChatReferenceEditor({
     // editor is still empty, so it keeps its prompt and publishes no message.
     const next = blankContent(normalized) ? [] : normalized;
     if (!validContent(next)) {
-      setNotice("正文最多 20000 字、64 份不同参考。");
+      setNotice(next.filter(part => part.type === "skill").length > 1 ? "每条消息只能选择一个技能，原内容未修改。" : "正文最多 20000 字、64 份不同参考。");
       paint(current.current, saved.current);
       return false;
     }
@@ -367,10 +368,12 @@ export function ChatReferenceEditor({
     setRange(at);
   }
   function updateMention() {
-    if (composing.current || choosing.current || disabled || referencesDisabled)
-      return;
+    if (composing.current || choosing.current || disabled) return;
     const at = caret();
     saved.current = at;
+    slash.current = slashRange(editingText(current.current), at.start, at.end);
+    latest.current.onSlashChange?.(slash.current?.query ?? null);
+    if (referencesDisabled) return;
     const next = mentionRange(editingText(current.current), at.start, at.end);
     if (!next) {
       dismissed.current = null;
@@ -444,8 +447,8 @@ export function ChatReferenceEditor({
         added: ReferenceAsset[] = [];
       const resolved = new Map<string, ReferenceAsset[]>();
       for (const part of content) {
-        if (part.type === "text") {
-          inserted.push(part);
+        if (part.type !== "reference") {
+          inserted.push(part.type === "skill" && !skillsEnabled ? {type: "text", text: `/${part.name}`} : part);
           continue;
         }
         const key = JSON.stringify([
@@ -539,6 +542,27 @@ export function ChatReferenceEditor({
   useImperativeHandle(ref, () => ({
     focus,
     caret,
+    setSkill: (name, fromSlash = false) => {
+      if (disabled || !skillsEnabled) return;
+      const range = fromSlash ? slash.current : caret();
+      if (!range) return;
+      let offset = 0, removedBeforeStart = 0, removedBeforeEnd = 0;
+      const body = current.current.filter(part => {
+        const start = offset;
+        offset += part.type === "text" ? part.text.length : 1;
+        if (part.type !== "skill") return true;
+        if (start < range.start) removedBeforeStart++;
+        if (start < range.end) removedBeforeEnd++;
+        return false;
+      });
+      const at = {start: range.start - removedBeforeStart, end: range.end - removedBeforeEnd};
+      const inserted: ReferenceContent = name ? [{type: "skill", name}, {type: "text", text: " "}] : [];
+      const position = at.start + (name ? 2 : 0);
+      publish(editContent(body, at, inserted), {start: position, end: position});
+      slash.current = null;
+      latest.current.onSlashChange?.(null);
+      focus({start: position, end: position});
+    },
     insert,
     removeSource: (nodeId) => {
       if (disabled || referencesDisabled || choosing.current) return false;
@@ -741,6 +765,8 @@ export function ChatReferenceEditor({
         }
         onCompositionStart={() => {
           composing.current = true;
+          slash.current = null;
+          latest.current.onSlashChange?.(null);
           close();
           // Uncommitted IME text is already drawn in the editor; the empty
           // prompt must not stay behind it.
@@ -752,11 +778,11 @@ export function ChatReferenceEditor({
         }}
         onInput={input}
         onFocus={() => {
-          saved.current = caret();
+          updateMention();
         }}
         onPointerUp={() => {
           close();
-          saved.current = caret();
+          updateMention();
         }}
         onBlur={() => {
           if (!choosing.current) close();
@@ -918,6 +944,7 @@ export function ChatReferenceEditor({
               data.content.every((part: ReferenceContent[number]) =>
                 part.type === "text"
                   ? typeof part.text === "string"
+                  : part.type === "skill" ? typeof part.name === "string" && /^[a-zA-Z0-9_-]{1,200}$/.test(part.name)
                   : part.type === "reference" &&
                     typeof part.name === "string" &&
                     part.name.length > 0 &&
@@ -946,7 +973,7 @@ export function ChatReferenceEditor({
                 void pasteReferences(normalizeContent(data.content), caret());
                 return;
               }
-              inserted = normalizeContent(data.content);
+              inserted = normalizeContent(data.content.map((part: ReferenceContent[number]) => part.type === "skill" && !skillsEnabled ? {type: "text", text: `/${part.name}`} : part));
             }
           } catch {
             /* Foreign clipboard data is inserted as plain text. */
diff --git a/src/canvas/SkillPicker.tsx b/src/canvas/SkillPicker.tsx
new file mode 100644
index 00000000..8e5e6e78
--- /dev/null
+++ b/src/canvas/SkillPicker.tsx
@@ -0,0 +1,243 @@
+import { useEffect, useLayoutEffect, useId, useRef, useState } from "react";
+import { chatSkills, type ChatSkill } from "../backend/chat.ts";
+import { CanvasIcon } from "./CanvasIcon.tsx";
+
+export function SkillPicker({
+  projectId,
+  selected,
+  slashQuery,
+  disabled,
+  onChange,
+}: {
+  projectId: string;
+  selected: string[];
+  slashQuery: string | null;
+  disabled: boolean;
+  onChange: (names: string[], fromSlash: boolean) => void;
+}) {
+  const [skills, setSkills] = useState<ChatSkill[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState("");
+  const [manual, setManual] = useState(false);
+  const [dismissed, setDismissed] = useState(false);
+  const [query, setQuery] = useState("");
+  const [active, setActive] = useState(0);
+  const [attempt, setAttempt] = useState(0);
+  const root = useRef<HTMLDivElement>(null);
+  const trigger = useRef<HTMLButtonElement>(null);
+  const list = useId();
+  const slash = slashQuery !== null && !dismissed;
+  const open = !disabled && (manual || slash);
+  const search = slash ? (slashQuery ?? "") : query;
+  const shown = skills.filter((skill) =>
+    `${skill.name} ${skill.description}`
+      .toLowerCase()
+      .includes(search.toLowerCase()),
+  );
+  const index = Math.min(active, Math.max(0, shown.length - 1));
+
+  useEffect(() => {
+    setManual(false);
+    setQuery("");
+    setSkills([]);
+    setError("");
+  }, [projectId]);
+  useEffect(() => {
+    setDismissed(false);
+    setActive(0);
+  }, [slashQuery]);
+  useEffect(() => {
+    setActive(0);
+  }, [search]);
+  useEffect(() => {
+    const abort = new AbortController();
+    setLoading(true);
+    setError("");
+    void chatSkills(projectId, abort.signal)
+      .then((value) => {
+        if (!abort.signal.aborted) setSkills(value);
+      })
+      .catch((failure: unknown) => {
+        if (!abort.signal.aborted)
+          setError(
+            failure instanceof Error ? failure.message : "技能列表读取失败。",
+          );
+      })
+      .finally(() => {
+        if (!abort.signal.aborted) setLoading(false);
+      });
+    return () => abort.abort();
+  }, [projectId, attempt]);
+
+  useLayoutEffect(() => {
+    if (!open || !root.current) return;
+    const popover = root.current.querySelector<HTMLElement>(".cw-skill-popover")!;
+    const bounds = root.current.closest(".cw-assistant-composer")!.getBoundingClientRect();
+    const width = Math.min(420, bounds.width, window.innerWidth - 16);
+    popover.style.width = `${width}px`;
+    popover.style.left = `${Math.max(8, Math.min(bounds.left, window.innerWidth - width - 8))}px`;
+    popover.style.bottom = `${window.innerHeight - bounds.top + 8}px`;
+    popover.style.maxHeight = `${Math.max(120, bounds.top - 24)}px`;
+    popover.showPopover();
+    if (!slash) popover.querySelector<HTMLInputElement>("input")?.focus({preventScroll: true});
+    const dismiss = () => {setManual(false); setDismissed(true);};
+    window.addEventListener("resize", dismiss);
+    return () => window.removeEventListener("resize", dismiss);
+  }, [open, slash]);
+
+  function close() {
+    setManual(false);
+    setDismissed(true);
+  }
+  function choose(skill: ChatSkill) {
+    const next = selected.includes(skill.name)
+      ? selected.filter((name) => name !== skill.name)
+      : [skill.name];
+    if (next.length > 1) return;
+    onChange(next, slash);
+    close();
+  }
+  useEffect(() => {
+    if (!open) return;
+    function outside(event: PointerEvent) {
+      if (!root.current?.contains(event.target as Node)) close();
+    }
+    function focusOutside(event: FocusEvent) {
+      if (!slash && !root.current?.contains(event.target as Node)) close();
+    }
+    function key(event: KeyboardEvent) {
+      const element = event.target as HTMLElement;
+      if (
+        !root.current?.contains(element) &&
+        !(slash && element.isContentEditable)
+      )
+        return;
+      if (event.isComposing) return;
+      if (
+        event.key !== "Escape" &&
+        !element.matches('input, [role="option"]') &&
+        !(slash && element.isContentEditable)
+      )
+        return;
+      if (event.key === "Escape") {
+        event.preventDefault();
+        event.stopImmediatePropagation();
+        close();
+        if (!slash) trigger.current?.focus();
+      } else if (["ArrowDown", "ArrowUp", "Enter"].includes(event.key)) {
+        event.preventDefault();
+        event.stopImmediatePropagation();
+        if (event.key === "Enter") {
+          if (!error && shown[index]) choose(shown[index]);
+        } else
+          setActive((current) =>
+            shown.length
+              ? (current +
+                  (event.key === "ArrowDown" ? 1 : -1) +
+                  shown.length) %
+                shown.length
+              : 0,
+          );
+      }
+    }
+    document.addEventListener("pointerdown", outside);
+    document.addEventListener("focusin", focusOutside);
+    document.addEventListener("keydown", key, true);
+    return () => {
+      document.removeEventListener("pointerdown", outside);
+      document.removeEventListener("focusin", focusOutside);
+      document.removeEventListener("keydown", key, true);
+    };
+  }, [open, slash, shown, selected, index]);
+
+  return (
+    <div className="chat-picker cw-skill-picker" ref={root}>
+      <button
+        type="button"
+        ref={trigger}
+        className="chat-picker-trigger cw-skill-trigger"
+        title="选择技能，或输入 / 查找；Agent 也会按任务自动选择"
+        aria-label="使用技能"
+        aria-expanded={open}
+        aria-controls={list}
+        aria-haspopup="dialog"
+        disabled={disabled}
+        onClick={() => {
+          setManual(!open);
+          setDismissed(open);
+          setQuery("");
+        }}
+      >
+        <CanvasIcon name="sparkle" size={16} />
+        <span>使用技能</span>
+        {selected.length > 0 && <small>{selected.length}</small>}
+      </button>
+      {open && (
+        <div
+          className="cw-skill-popover"
+          popover="manual"
+          role="dialog"
+          aria-label="使用技能"
+          id={list}
+        >
+          <div className="cw-skill-search">
+            {!slash ? <>
+              <CanvasIcon name="search" size={18} />
+              <input value={query} onChange={event => setQuery(event.target.value)} placeholder="搜索技能" aria-label="搜索技能" aria-controls={`${list}-options`} aria-activedescendant={shown[index] ? `${list}-${index}` : undefined} />
+            </> : <span>使用技能</span>}
+            <button type="button" aria-label="刷新技能" title="刷新技能目录" disabled={loading} onClick={() => setAttempt(value => value + 1)}>↻</button>
+          </div>
+          {loading && !skills.length ? (
+            <p role="status">正在读取技能…</p>
+          ) : error ? (
+            <div className="cw-skill-status" role="alert">
+              <p>{error}</p>
+              <button
+                type="button"
+                onClick={() => setAttempt((value) => value + 1)}
+              >
+                重试
+              </button>
+            </div>
+          ) : (
+            <div
+              className="cw-skill-options"
+              role="listbox"
+              id={`${list}-options`}
+              aria-label="可用技能"
+              aria-multiselectable="true"
+            >
+              {shown.map((skill, position) => (
+                <button
+                  type="button"
+                  role="option"
+                  id={`${list}-${position}`}
+                  key={skill.name}
+                  aria-selected={selected.includes(skill.name)}
+                  className={position === index ? "is-active" : ""}
+                  onFocus={() => setActive(position)}
+                  onMouseEnter={() => setActive(position)}
+                  onMouseDown={(event) => event.preventDefault()}
+                  onClick={() => choose(skill)}
+                >
+                  <CanvasIcon name="sparkle" size={16} />
+                  <span>
+                    <span className="cw-skill-title"><strong>{skill.name}</strong>{skill.source && <em>{{builtin: "内置", workspace: "工作区", project: "项目"}[skill.source]}</em>}</span>
+                    <small title={skill.description}>{skill.description}</small>
+                  </span>
+                  {selected.includes(skill.name) && (
+                    <CanvasIcon name="check" size={14} />
+                  )}
+                </button>
+              ))}
+              {!shown.length && (
+                <p>{skills.length ? "没有匹配的技能" : "暂无可用技能"}</p>
+              )}
+            </div>
+          )}
+
+        </div>
+      )}
+    </div>
+  );
+}
diff --git a/src/canvas/assistant-panel.css b/src/canvas/assistant-panel.css
index 05e53fe3..000982a7 100644
--- a/src/canvas/assistant-panel.css
+++ b/src/canvas/assistant-panel.css
@@ -740,3 +740,43 @@
     width: calc(100cqw - 32px);
   }
 }
+
+
+.cw-assistant-panel .cw-skill-trigger {
+  background: var(--chat-surface);
+  padding: 5px 7px;
+}
+.cw-skill-trigger small {
+  color: var(--chat-text);
+  font-size: 10px;
+}
+.cw-skill-popover {
+  position: fixed;
+  inset: auto;
+  margin: 0;
+  box-sizing: border-box;
+  overflow-y: auto;
+  z-index: 80;
+  padding: 8px;
+  border: 1px solid var(--chat-border);
+  border-radius: 16px;
+  background: var(--chat-surface);
+  box-shadow: 0 10px 32px #0005;
+  color: var(--chat-text);
+}
+.cw-skill-search { display: flex; align-items: center; gap: 10px; padding: 8px 10px 12px; margin-bottom: 6px; border-bottom: 1px solid var(--chat-border); color: var(--chat-muted); }
+.cw-assistant-panel .cw-skill-search input { flex: 1; min-width: 0; padding: 0; margin: 0; background: transparent; border: 0; border-radius: 0; outline: none; color: var(--chat-text); font: inherit; font-size: 14px; }
+.cw-assistant-panel .cw-skill-search button { padding: 2px 4px; color: var(--chat-muted); font-size: 18px; }
+.cw-skill-options { max-height: min(360px, 45dvh); overflow-y: auto; scrollbar-width: thin; }
+.cw-assistant-panel .cw-skill-options > button { display: flex; align-items: flex-start; gap: 10px; width: 100%; padding: 12px 10px; border-radius: 10px; text-align: left; color: var(--chat-text); }
+.cw-skill-options > button > svg { margin-top: 3px; flex-shrink: 0; color: var(--chat-text); }
+.cw-skill-options > button > span { min-width: 0; flex: 1; }
+.cw-skill-title { display: flex; align-items: center; gap: 6px; min-width: 0; }
+.cw-skill-title strong { font-size: 14px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.cw-skill-title em { flex-shrink: 0; padding: 1px 5px; border-radius: 4px; background: var(--chat-hover); color: var(--chat-muted); font-size: 11px; font-style: normal; }
+.cw-skill-options small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-top: 4px; font-size: 12px; line-height: 1.6; color: var(--chat-muted); }
+.cw-assistant-panel .cw-skill-options > button:is(.is-active, :hover, [aria-selected="true"]) { background: var(--chat-hover); }
+.cw-skill-popover p { margin: 12px 10px; color: var(--chat-muted); font-size: 12px; }
+.cw-assistant-panel .cw-skill-status > button { padding: 5px 8px; border: 1px solid var(--chat-border); border-radius: 6px; font-size: 12px; }
+
+.cw-chat-skill-token { display: inline-block; padding: 0 8px; margin-right: 5px; border: 0; border-radius: 6px; background: #2c2c3a; color: #cfcfe6; font-size: inherit; font-weight: 600; line-height: 1.65; vertical-align: baseline; white-space: nowrap; user-select: all; }
diff --git a/src/canvas/chatReferenceContent.ts b/src/canvas/chatReferenceContent.ts
index 46994d9f..7c2155c5 100644
--- a/src/canvas/chatReferenceContent.ts
+++ b/src/canvas/chatReferenceContent.ts
@@ -2,6 +2,7 @@ import type { ChatAsset } from "../backend/chat.ts";
 
 export type ContentPart =
   | { type: "text"; text: string }
+  | { type: "skill"; name: string }
   | {
       type: "reference";
       assetId: string;
@@ -71,7 +72,8 @@ export function normalizeContent(parts: ReferenceContent): ReferenceContent {
       const last = result.at(-1);
       if (last?.type === "text") last.text += text;
       else result.push({ type: "text", text });
-    } else
+    } else if (part.type === "skill") result.push({type: "skill", name: part.name});
+    else
       result.push({
         type: "reference",
         assetId: part.assetId,
@@ -109,6 +111,7 @@ export function contentText(content: ReferenceContent, speech = false) {
     .map((part) =>
       part.type === "text"
         ? part.text
+        : part.type === "skill" ? (speech ? "" : `/${part.name}`)
         : speech
           ? ""
           : `［参考${ids.indexOf(part.assetId) + 1}：${part.name}］`,
@@ -119,6 +122,7 @@ export function contentText(content: ReferenceContent, speech = false) {
     let prefix = "",
       hasReference = false;
     for (const part of content) {
+      if (part.type === "skill") continue;
       if (part.type === "reference") {
         hasReference = true;
         continue;
@@ -156,7 +160,7 @@ export function referenceContent(
       },
     ];
   });
-  return body.some((part) => part.type === "reference" || part.text.length > 0)
+  return body.some((part) => part.type !== "text" || part.text.length > 0)
     ? [...header, { type: "text", text: "\n" }, ...body]
     : header;
 }
@@ -181,7 +185,7 @@ export function currentReferences(
   assets: readonly ReferenceAsset[],
 ): ReferenceContent {
   return content.map((part) => {
-    if (part.type === "text" || part.binding === "asset") return part;
+    if (part.type !== "reference" || part.binding === "asset") return part;
     const asset = part.nodeId
       ? (assets.find(
           (asset) =>
@@ -205,6 +209,7 @@ export function currentReferences(
 export function validContent(content: ReferenceContent) {
   return (
     content.length <= 2000 &&
+    content.filter(part => part.type === "skill").length <= 1 &&
     contentText(content).length <= CONTENT_LIMIT &&
     referenceIds(content).length <= REFERENCE_LIMIT
   );
diff --git a/src/canvas/chatReferenceDOM.ts b/src/canvas/chatReferenceDOM.ts
index 5aec8e2d..3a2df6d5 100644
--- a/src/canvas/chatReferenceDOM.ts
+++ b/src/canvas/chatReferenceDOM.ts
@@ -5,7 +5,7 @@ import {
 
 // An atomic reference occupies one editing position, regardless of its label.
 export function units(node: Node): number {
-  if (node instanceof HTMLElement && node.dataset.reference) return 1;
+  if (node instanceof HTMLElement && (node.dataset.reference || node.dataset.skill)) return 1;
   if (node.nodeType === Node.TEXT_NODE)
     return (node.textContent ?? "").replaceAll("\u200b", "").length;
   if (node.nodeName === "BR") return 1;
@@ -50,7 +50,7 @@ export function select(root: HTMLElement, caret: Caret) {
         }
         if (node.nodeType === Node.TEXT_NODE) return [node, remaining];
         if (
-          (node instanceof HTMLElement && node.dataset.reference) ||
+          (node instanceof HTMLElement && (node.dataset.reference || node.dataset.skill)) ||
           node.nodeName === "BR"
         )
           return [parent, index + (remaining ? 1 : 0)];
@@ -74,7 +74,9 @@ export function readDOM(root: HTMLElement): ReferenceContent {
   if (root.childNodes.length === 1 && root.firstChild?.nodeName === "BR") return [];
   const parts: ReferenceContent = [];
   function read(node: Node) {
-    if (node instanceof HTMLElement && node.dataset.reference) {
+    if (node instanceof HTMLElement && node.dataset.skill) {
+      parts.push({type: "skill", name: node.dataset.skill});
+    } else if (node instanceof HTMLElement && node.dataset.reference) {
       try {
         parts.push(JSON.parse(node.dataset.reference));
       } catch {
diff --git a/src/canvas/generationReferenceContent.ts b/src/canvas/generationReferenceContent.ts
index bac7a348..e13a60fa 100644
--- a/src/canvas/generationReferenceContent.ts
+++ b/src/canvas/generationReferenceContent.ts
@@ -37,7 +37,7 @@ export function generationEditIdentity(
         )
       : undefined,
     content: content.map((part) =>
-      part.type === "text"
+      part.type !== "reference"
         ? part
         : part.binding === "asset"
           ? {
@@ -143,6 +143,7 @@ export function generationContentPatch(
   const mentions: NonNullable<CanvasNodeData["promptMentions"]> = [];
   for (const part of content) {
     if (part.type === "text") prompt += part.text;
+    else if (part.type === "skill") prompt += `/${part.name}`;
     else {
       const label = `@${part.name}`;
       mentions.push({
diff --git a/src/canvas/operations.ts b/src/canvas/operations.ts
index aab4fc8c..514e5bc5 100644
--- a/src/canvas/operations.ts
+++ b/src/canvas/operations.ts
@@ -323,7 +323,7 @@ export function pasteFragment(
     if (!node.data.promptContent) return node;
     const pinned = new Map<string, string>();
     const content = node.data.promptContent.map((part) => {
-      if (part.type === "text") return part;
+      if (part.type !== "reference") return part;
       if (part.binding === "asset") {
         const key = part.referenceId ?? `${part.assetId}:${part.fingerprint}`;
         if (!pinned.has(key)) pinned.set(key, newId());
diff --git a/src/canvas/referenceMentions.ts b/src/canvas/referenceMentions.ts
index 58228012..1e40ff66 100644
--- a/src/canvas/referenceMentions.ts
+++ b/src/canvas/referenceMentions.ts
@@ -37,6 +37,13 @@ export function mentionRange(
   return value[start - 1] === "@" ? { start: start - 1, end } : null;
 }
 
+export function slashRange(value: string, start: number, end = start) {
+  if (start !== end || start < 1 || start > value.length) return null;
+  const match = /(?:^|[\s\ufffc])\/([^\s/\ufffc]*)$/u.exec(value.slice(0, start));
+  const suffix = /^[^\s/\ufffc]*/u.exec(value.slice(start))![0];
+  return match ? {start: start - match[1]!.length - 1, end: start + suffix.length, query: match[1]!} : null;
+}
+
 export function insertMention(
   value: string,
   range: MentionRange,
diff --git a/src/canvas/useAssistantChat.ts b/src/canvas/useAssistantChat.ts
index 18d0893b..21dc6b4d 100644
--- a/src/canvas/useAssistantChat.ts
+++ b/src/canvas/useAssistantChat.ts
@@ -94,6 +94,7 @@ export function useAssistantChat(
       ...previous,
       draft: contentText(content),
       draftContent: content,
+      skills: content.flatMap(part => part.type === "skill" ? [part.name] : []),
       assets,
     }));
   };
diff --git a/tests/chatReferenceDOM.test.ts b/tests/chatReferenceDOM.test.ts
index b7a11a87..b8f4e247 100644
--- a/tests/chatReferenceDOM.test.ts
+++ b/tests/chatReferenceDOM.test.ts
@@ -1,6 +1,6 @@
 import assert from "node:assert/strict";
 import test from "node:test";
-import { readDOM } from "../src/canvas/chatReferenceDOM.ts";
+import { readDOM, editContent } from "../src/canvas/chatReferenceDOM.ts";
 
 test("a browser's lone empty line is empty content, while real line breaks remain", () => {
   const previousElement = globalThis.HTMLElement;
@@ -33,3 +33,25 @@ test("a browser's lone empty line is empty content, while real line breaks remai
     globalThis.Node = previousNode;
   }
 });
+
+
+test("consuming a skill command preserves references and surrounding text", () => {
+  const reference = {type: "reference" as const, assetId: "asset", name: "source.mp4", fingerprint: "source"};
+  const content = [reference, {type: "text" as const, text: " /skill 保留正文"}];
+  assert.deepEqual(editContent(content, {start: 2, end: 8}, []), [reference, {type: "text", text: "  保留正文"}]);
+});
+
+
+test("skill tokens retain their document position and occupy one editing unit", async () => {
+  const { editingText } = await import("../src/canvas/chatReferenceDOM.ts");
+  const { contentText, referenceIds, validContent } = await import("../src/canvas/chatReferenceContent.ts");
+  const reference = {type: "reference" as const, assetId: "image", name: "source.png", fingerprint: null};
+  const content = [reference, {type: "text" as const, text: " /skill trailing"}];
+  const inserted = editContent(content, {start: 2, end: 8}, [{type: "skill", name: "character-replacement"}]);
+  assert.deepEqual(inserted, [reference, {type: "text", text: " "}, {type: "skill", name: "character-replacement"}, {type: "text", text: " trailing"}]);
+  assert.equal(editingText(inserted), "\ufffc \ufffc trailing");
+  assert.deepEqual(referenceIds(inserted), ["image"]);
+  assert.match(contentText(inserted), /\/character-replacement trailing$/);
+  assert.deepEqual(editContent(inserted, {start: 2, end: 3}, []), [reference, {type: "text", text: "  trailing"}]);
+  assert.equal(validContent([{type: "skill", name: "first"}, {type: "skill", name: "second"}]), false);
+});
diff --git a/tests/referenceMentions.test.ts b/tests/referenceMentions.test.ts
index e61f475d..6c1fbea6 100644
--- a/tests/referenceMentions.test.ts
+++ b/tests/referenceMentions.test.ts
@@ -8,6 +8,7 @@ import {
   insertMention,
   mentionCategories,
   mentionRange,
+  slashRange,
   nodeMentionOptions,
 } from "../src/canvas/referenceMentions.ts";
 
@@ -125,3 +126,20 @@ test("upstream references exclude blank/missing/timeline nodes and include subje
   assert.deepEqual(mentionCategories(options), ["all", "image", "subject"]);
   assert.deepEqual(mentionCategories([]), ["all"]);
 });
+
+
+test("skill slash commands follow the caret after text and atomic references", () => {
+  assert.deepEqual(slashRange("\ufffc\ufffc /character", 13), {start: 3, end: 13, query: "character"});
+  assert.deepEqual(slashRange("\ufffc/", 2), {start: 1, end: 2, query: ""});
+  assert.deepEqual(slashRange("先规划\n/换人 后文", 7), {start: 4, end: 7, query: "换人"});
+  assert.equal(slashRange("https://example.com", 19), null);
+  assert.equal(slashRange("/tmp/file", 9), null);
+  assert.equal(slashRange("文字/skill", 8), null);
+  assert.equal(slashRange("/skill", 1, 6), null);
+  assert.equal(slashRange("/skill", 0), null);
+});
+
+
+test("choosing a skill from the middle of a slash token replaces the complete token", () => {
+  assert.deepEqual(slashRange("\ufffc /character 后文", 7), {start: 2, end: 12, query: "char"});
+});