* feat: add video generation core infrastructure and extend image generation parameters
Add full video generation capability to OpenClaw core:
- New `video_generate` agent tool with support for prompt, duration, aspect ratio,
resolution, seed, watermark, I2V (first/last frame), camerafixed, and draft mode
- New `VideoGenerationProvider` plugin SDK type and `registerVideoGenerationProvider` API
- New `src/video-generation/` module (types, runtime with fallback, provider registry)
- New `openclaw/plugin-sdk/video-generation` export for external plugins
- 200MB max file size for generated videos (vs default 5MB for images)
Extend image generation with additional parameters:
- `seed`, `watermark`, `guidanceScale`, `optimizePrompt`, `providerOptions`
- New `readBooleanParam()` helper in tool common utilities
Update plugin registry, contracts, and all test mocks to include
`videoGenerationProviders` and `videoGenerationProviderIds`.
Made-with: Cursor
* fix: validate aspect ratio against target provider when model override is set
* cleanup: remove redundant ?? undefined from video/image generate tools
* chore: regenerate plugin SDK API baseline after video generation additions
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Co-authored-by: yongliang.xie <yongliang.xie@bytedance.com>
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