feat(plugins/octopus-meme-maker): add Octopus Worker meme generator

Generate Smooth Squishmallow-style pink-octopus office-worker GIF memes from a
scene description. Ships the 4-stage pipeline (base pose via image_synthesize,
6s 24fps video via gen_videos, transparent text overlay via Pillow, 720x720 +
480x480 GIF via ffmpeg) plus cross-platform scripts that run on macOS, Linux,
and Windows.

Layout
- plugin.json / README.md / LICENSE (Apache-2.0)
- skills/octopus-meme-maker/
  - SKILL.md (127 lines, skill-review 100% PASS: 0 blocker / 0 major / 0 minor)
  - reference.md (anatomy, style, prompt template, H3 source videos section)
  - issues.md (ban-list, pipeline failures, feedback-signal translations)
- scripts/
  - make_gif.py — 720x720 + 480x480 GIF assembly via ffmpeg subprocess
  - make_preview_strip.py — 5-frame preview strip with cross-platform font picker
  - make_text_overlay.py — transparent Chinese text overlay (Pillow) with
    cross-platform font picker (macOS STHeiti, Linux wqy-microhei/Noto CJK,
    Windows msyh)
- reference/
  - sample_01..06.png — character ground truth (6 reference frames)
  - overview.png — 6-up contact sheet
  - videos/ — 2 illustrative H3 source videos (768x768, 24 fps, 6.58 s, h264+aac):
    breakdown-h3.mp4 (我裂开了), treat-milk-tea-h3.mp4 (请大家喝奶茶)
- examples/
  - 3 base.png samples (02-stay-late, 10-toilet-slacking, 11-touch-fish) for
    image_synthesize seeding

No network, no credentials, no installers, no symlinks, no native binaries.
Passes `npm run check` (201/201 tests) and skill-review audit (100% PASS).

Author: weekbin

plugins/weekbin/octopus-meme-maker/LICENSE

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plugins/weekbin/octopus-meme-maker/README.md

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+# Octopus Meme Maker
+
+Generate Smooth Squishmallow-style pink-octopus office-worker GIF memes from a scene description. Ships the 4-stage pipeline (base pose → 6s video → transparent text overlay → 720×720 GIF) plus the cross-platform scripts that assemble the final 480×480 mini-GIF for chat apps.
+
+## Try it
+
+```text
+Make me a new octopus worker meme: 摆烂躺平 (lying flat on the desk, one eye half-closed, the other fully closed, the tip of one tentacle holding a coffee cup). The character must match the existing reference samples in reference/sample_01..06.png. Save the result to 04-lying-flat/ and follow the 4-stage pipeline in skills/octopus-meme-maker/SKILL.md.
+```
+
+Expected result: `04-lying-flat/base.png` (2048×2048 base) → `04-lying-flat/video.mp4` (1080p 6s 24fps) → `04-lying-flat/final.gif` (720×720 ≤ 6.4 MB) → `04-lying-flat/final-mini.gif` (480×480 ≤ 1.7 MB).
+
+## What's in this Plugin
+
+- `skills/octopus-meme-maker/SKILL.md` — the 4-stage pipeline + ban-list + exit conditions
+- `skills/octopus-meme-maker/reference.md` — character anatomy, style rules, prompt template, reference image list
+- `skills/octopus-meme-maker/issues.md` — known failure modes and feedback signals
+- `scripts/make_text_overlay.py` — render transparent Chinese text overlay (Pillow, cross-platform font picker)
+- `scripts/make_preview_strip.py` — extract 5 key frames from a 6s video and stitch a preview strip
+- `scripts/make_gif.py` — compose 720×720 final.gif + 480×480 final-mini.gif from video + overlay (ffmpeg subprocess)
+- `reference/sample_01..06.png` — character ground truth (6 reference frames)
+- `reference/overview.png` — reference contact sheet
+- `reference/videos/` — 2 h3 source videos (768×768, 24 fps, 6.58 s, h264+aac) picked as illustrative animation samples: `breakdown-h3.mp4` (我裂开了) and `treat-milk-tea-h3.mp4` (请大家喝奶茶)
+- `examples/` — 3 base.png samples that the maintainer has successfully extracted. Pass them as `input_file_paths` to `image_synthesize` to lock the character anatomy and the scene layout while varying the pose: `02-stay-late-base.png`, `10-toilet-slacking-base.png`, `11-touch-fish-base.png`
+
+## Requirements
+
+- Python 3.10+
+- `pip install Pillow`
+- `ffmpeg` 4.4+ on `PATH` (verify with `ffmpeg -version`)
+- A CJK font installed on the system for the text overlay. The script auto-picks the first match from this list:
+  - macOS: `/System/Library/Fonts/STHeiti Medium.ttc`, `/System/Library/Fonts/PingFang.ttc`
+  - Linux: `/usr/share/fonts/truetype/wqy/wqy-microhei.ttc`, `/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc`
+  - Windows: `C:\Windows\Fonts\msyh.ttc`, `C:\Windows\Fonts\simhei.ttf`
+  - Pass `--font <path>` to override.
+- MiniMax Code's `image_synthesize` and `gen_videos` tools (used by stage 1 and stage 2 of the pipeline; not bundled in this Plugin — they are part of the host).
+
+## Supported platforms
+
+- macOS 13+ (verified by the original author on macOS)
+- Linux (Ubuntu 22.04+, Debian 12+; ffmpeg + Python + Pillow only)
+- Windows 10/11 with PowerShell or Git Bash; the pipeline is pure Python + ffmpeg subprocess calls
+
+## Data and network
+
+- No network access at runtime. The Plugin runs entirely on the local machine.
+- The character generation steps (stage 1, stage 2) call host-provided image and video synthesis tools; those are out of scope for this Plugin but their network and data behaviour follows the host's policy.
+- No credentials, accounts, paid services, telemetry, installers, symlinks, or native binaries are bundled.
+
+## Verification
+
+Run from the Plugin root:
+
+```bash
+python3 scripts/make_text_overlay.py "再熬一会" /tmp/octopus_test_overlay.png
+python3 scripts/make_preview_strip.py /path/to/some/video.mp4 /tmp/octopus_test_strip.png
+python3 scripts/make_gif.py /path/to/some/scene-dir "再熬一会"
+```
+
+All three scripts must exit 0 and produce the expected output file.
+
+## License
+
+Apache-2.0. See [LICENSE](./LICENSE).

plugins/weekbin/octopus-meme-maker/examples/02-stay-late-base.png

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+# Examples — base pose samples
+
+This directory holds `base.png` samples that the maintainer has successfully extracted. They serve two purposes:
+
+1. **抽卡的基础图** — pass them as `input_file_paths` to `image_synthesize` together with `reference/sample_0*.png` to lock the character anatomy and the scene layout, then vary only the pose / expression.
+2. **Reference for the scene table** — the file naming matches the scene directory in `~/Works/octopus-worker-meme/` so consumers can cross-reference.
+
+| File | Source | Use as `image_synthesize` input_file_path? |
+|---|---|---|
+| `02-stay-late-base.png` | image_synthesize (seeded with maintainer's external H3 first frame) | yes — locks coffee + half-lidded eyes |
+| `10-toilet-slacking-base.png` | image_synthesize (no matching H3 source) | yes — locks toilet tiles + phone + open-mouth smile |
+| `11-touch-fish-base.png` | image_synthesize (seeded with maintainer's external H3 first frame) | yes — locks desk + salmon + side-glance |
+
+When adding a new base, follow the `<scene-number>-<scene-name>-base.png` convention. The matching H3 source video (if any) lives in the maintainer's external collection at `~/Documents/cute/app/public/assets/octopus/_h3-source/`; this Plugin only ships 2 illustrative H3 videos in `reference/videos/` (`breakdown-h3.mp4`, `treat-milk-tea-h3.mp4`).

plugins/weekbin/octopus-meme-maker/examples/10-toilet-slacking-base.png

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+{
+  "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
+  "name": "octopus-meme-maker",
+  "version": "0.1.0",
+  "description": "Generate a Smooth Squishmallow-style pink-octopus office-worker GIF meme from a scene description, using a 4-stage pipeline (base pose -> 6s video -> transparent text overlay -> 720x720 GIF). Produces a 480x480 mini-GIF for chat apps. Use this skill when the user asks for a cute octopus meme, a worker-octopus sticker, a Squishmallow-style GIF, or wants to extend the existing 30+ scene library.",
+  "author": {
+    "name": "weekbin",
+    "url": "https://github.com/weekbin"
+  },
+  "license": "Apache-2.0",
+  "keywords": [
+    "minimax-code",
+    "plugin",
+    "meme",
+    "octopus",
+    "gif",
+    "image-generation"
+  ]
+}