PixiJS v8 Container: scene-graph grouping and transforms

Prerequisites: a PixiJS v8 project; the sibling skill pixijs-scene-core-concepts for the scene-graph mental model (referenced throughout) Install "PixiJS v8 Container: scene-graph grouping and transforms" for me. It teaches the official PixiJS v8 Container reference: constructor options, child management, transforms (position/scale/pivot/skew, rotation vs angle, origin), zIndex sorting, bounds and coordinate conversion, container events, onRender callbacks, safe destroy with GPU cleanup, and graded common mistakes — by @pixijs, MIT-licensed. Repository: https://github.com/pixijs/pixijs-skills/blob/main/skills/pixijs-scene-container/SKILL.md 1. Fetch the SKILL.md file (and any helper files) from the repository path into a temporary folder and summarize what it does in one or two sentences. 2. Safety check: review the SKILL.md and scripts for anything suspicious (unexpected network calls, shell commands, credential harvesting). This repo should contain zero secrets in code, credentials only via the secure vault, allowed hosts declared in the SKILL.md. Verify that holds here; STOP on any red flag and tell me. 3. Install it as a skill: copy SKILL.md and its helper files into the agent's skills directory, in a folder named "pixijs-scene-container". 4. Verify with no network calls: frontmatter valid, files in place. 5. Report what was installed, where, and what I still need to do myself (e.g. also fetch the pixijs-scene-core-concepts skill for the scene-graph mental model). GitHub is optional: if I have a GitHub account or the gh CLI, you may use it; otherwise public access is fine. Never require it unless it's in the prerequisites above. Rules: don't touch anything outside the temp folder and the install target. If anything looks off, stop and ask me.