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calesthio e5367f7d66 feat(character-animation): add local rigged character pipeline

New beta pipeline for reusable cartoon characters with SVG rigs, pose
libraries, action timelines, and Canvas/Remotion/HyperFrames rendering.

- pipeline_defs/character-animation.yaml: 11-stage manifest
- skills/pipelines/character-animation/: 11 stage director skills
- tools/character/: BaseTool implementations for char design, rigging,
  pose libraries, action timelines, previews, and QA
- schemas/artifacts/{character_design,rig_plan,pose_library,
  action_timeline,character_qa_report}.schema.json: canonical artifacts
- schemas/artifacts/scene_plan.schema.json: extended for character-led
  scenes
- .agents/skills/{canvas-procedural-animation,character-animation-qa,
  character-rigging,pose-library-design,svg-character-animation}/:
  Layer 3 vendor knowledge
- AGENT_GUIDE / PROJECT_CONTEXT / README / ARCHITECTURE / PROVIDERS:
  surface the new pipeline and its capability family
- tools/video/hyperframes_compose.py: SVG character rig support
- tests/contracts/test_character_animation_pipeline.py: contract tests

2026-04-28 08:11:02 -07:00

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name, description, license

name	description	license
pose-library-design	Design reusable 2D character pose libraries, action cycles, and expression states for data-driven animation.	MIT

Pose Library Design

Use this skill when producing pose_library artifacts.

Pose Categories

Neutral: idle, breathe, listening.
Attention: look_up, look_down, look_left, look_right.
Emotion: happy, sad, surprised, worried, determined.
Action: reach, point, hold, jump, flap, walk_contact, walk_passing.
Mouth: closed, small_o, wide_open, smile, frown, phoneme-ish shapes.

Acting Pattern

Use timed pose sequences:

anticipation -> action -> hold -> settle

Do not continuously animate every part. Holds make the acting readable.

Pose Data Pattern

{
  "pose": "surprised",
  "parts": {
    "head": { "rotation": -6, "y": -4 },
    "pupil_left": { "x": 4, "y": -6 },
    "mouth": "small_o"
  },
  "hold_frames": 18,
  "transition": "back.out"
}

Quality Checklist

Required emotions have poses.
Required actions have poses or cycles.
Reused cycles have contact and passing poses.
Poses name only changed parts; defaults come from the rig.

Sources

GSAP timeline sequencing for readable multi-step poses: https://gsap.com/docs/v3/GSAP/Timeline/
Remotion interpolation for frame-based transitions: https://www.remotion.dev/docs/interpolate
Remotion spring for natural motion: https://www.remotion.dev/docs/spring

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