plugin: add Apple game development skills

[gaelic-ghost]

Summary

• add the Socket-hosted game-dev-skills plugin with SpriteKit, SceneKit, GameplayKit, Game Controller, Core Haptics, profiling, and stack-selection workflows
• wire the plugin into the root marketplace, README, contributor guide, roadmap, and maintainer plan
• bump shared Socket release surfaces to 7.9.0

Verification

• uv run python /Users/galew/.codex/skills/.system/skill-creator/scripts/quick_validate.py plugins/game-dev-skills/skills/gameplaykit-simulation-workflow
• uv run python /Users/galew/.codex/skills/.system/skill-creator/scripts/quick_validate.py plugins/game-dev-skills/skills/xcode-game-profiling-workflow
• uv run python /Users/galew/.codex/skills/.system/plugin-creator/scripts/validate_plugin.py plugins/game-dev-skills
• uv run scripts/validate_socket_metadata.py
• uv run mypy
• git diff --check

Summary by CodeRabbit

• New Features

  • Added a new game-dev-skills catalog plugin with Apple game-development guidance, including workflow coverage for SpriteKit, SceneKit, GameplayKit, controller input, haptics, and profiling.
  • Expanded the catalog with a new maintainer plan and roadmap milestone for the game-dev skills plugin.

• Documentation

  • Updated contributor and README docs to include the new plugin in catalog and marketplace listings.

• Chores

  • Bumped package/plugin versions across multiple existing plugins to 7.9.0.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 99a59167-c64f-44ee-ab17-36934246221b

📥 Commits

Reviewing files that changed from the base of the PR and between 6036bdb and 1d418ba.

⛔ Files ignored due to path filters (8)

• plugins/agent-portability-skills/uv.lock is excluded by !**/*.lock
• plugins/apple-dev-skills/uv.lock is excluded by !**/*.lock
• plugins/cardhop-app/mcp/uv.lock is excluded by !**/*.lock
• plugins/productivity-skills/uv.lock is excluded by !**/*.lock
• plugins/python-skills/uv.lock is excluded by !**/*.lock
• plugins/things-app/mcp/uv.lock is excluded by !**/*.lock
• plugins/things-app/uv.lock is excluded by !**/*.lock
• uv.lock is excluded by !**/*.lock

📒 Files selected for processing (46)

• .agents/plugins/marketplace.json
• CONTRIBUTING.md
• README.md
• ROADMAP.md
• docs/maintainers/game-dev-skills-plugin-plan.md
• plugins/agent-portability-skills/.codex-plugin/plugin.json
• plugins/agent-portability-skills/pyproject.toml
• plugins/android-dev-skills/.codex-plugin/plugin.json
• plugins/apple-dev-skills/.codex-plugin/plugin.json
• plugins/apple-dev-skills/pyproject.toml
• plugins/cardhop-app/.codex-plugin/plugin.json
• plugins/cardhop-app/mcp/pyproject.toml
• plugins/codex-utilities/.codex-plugin/plugin.json
• plugins/dotnet-skills/.codex-plugin/plugin.json
• plugins/game-dev-skills/.codex-plugin/plugin.json
• plugins/game-dev-skills/AGENTS.md
• plugins/game-dev-skills/skills/choose-apple-game-stack/SKILL.md
• plugins/game-dev-skills/skills/choose-apple-game-stack/agents/openai.yaml
• plugins/game-dev-skills/skills/core-haptics-game-feedback-workflow/SKILL.md
• plugins/game-dev-skills/skills/core-haptics-game-feedback-workflow/agents/openai.yaml
• plugins/game-dev-skills/skills/game-controller-input-workflow/SKILL.md
• plugins/game-dev-skills/skills/game-controller-input-workflow/agents/openai.yaml
• plugins/game-dev-skills/skills/gameplaykit-simulation-workflow/SKILL.md
• plugins/game-dev-skills/skills/gameplaykit-simulation-workflow/agents/openai.yaml
• plugins/game-dev-skills/skills/scenekit-game-workflow/SKILL.md
• plugins/game-dev-skills/skills/scenekit-game-workflow/agents/openai.yaml
• plugins/game-dev-skills/skills/spritekit-game-workflow/SKILL.md
• plugins/game-dev-skills/skills/spritekit-game-workflow/agents/openai.yaml
• plugins/game-dev-skills/skills/xcode-game-profiling-workflow/SKILL.md
• plugins/game-dev-skills/skills/xcode-game-profiling-workflow/agents/openai.yaml
• plugins/productivity-skills/.codex-plugin/plugin.json
• plugins/productivity-skills/pyproject.toml
• plugins/python-skills/.codex-plugin/plugin.json
• plugins/python-skills/pyproject.toml
• plugins/reverse-engineering-skills/.codex-plugin/plugin.json
• plugins/rust-skills/.codex-plugin/plugin.json
• plugins/server-side-jvm/.codex-plugin/plugin.json
• plugins/server-side-swift/.codex-plugin/plugin.json
• plugins/spotify/.codex-plugin/plugin.json
• plugins/swift-lang/.codex-plugin/plugin.json
• plugins/swiftasb-skills/.codex-plugin/plugin.json
• plugins/things-app/.codex-plugin/plugin.json
• plugins/things-app/mcp/pyproject.toml
• plugins/things-app/pyproject.toml
• plugins/web-dev-skills/.codex-plugin/plugin.json
• pyproject.toml

---

📝 Walkthrough

Walkthrough

Adds a new game-dev-skills plugin containing six Apple game-development workflow skills (stack selection, SpriteKit, SceneKit, GameplayKit, controller input, Core Haptics, Xcode profiling), a maintainer plan document, and marketplace/documentation wiring. Separately bumps the project version from 7.8.0 to 7.9.0 across the root and all plugin manifests/pyproject files.

Changes

Game Dev Skills plugin addition

Layer / File(s)	Summary
Plugin manifest and marketplace wiring plugins/game-dev-skills/.codex-plugin/plugin.json, plugins/game-dev-skills/AGENTS.md, .agents/plugins/marketplace.json, CONTRIBUTING.md, README.md, ROADMAP.md	Adds the plugin manifest and AGENTS.md, registers game-dev-skills in the marketplace as available/on-install under Developer Tools, and lists it in CONTRIBUTING, README, and ROADMAP (Milestone 20 + backlog item).
Maintainer plan document docs/maintainers/game-dev-skills-plugin-plan.md	Documents plugin intent, packaging, ownership boundaries, shipped and proposed skill inventories, completion checklist, and open questions.
Choose Apple game stack routing skill plugins/game-dev-skills/skills/choose-apple-game-stack/SKILL.md, .../agents/openai.yaml	Adds routing logic to select the smallest correct Apple game stack, source-check rules, validation choices, and follow-up handoffs.
SpriteKit and SceneKit workflow skills plugins/game-dev-skills/skills/spritekit-game-workflow/*, plugins/game-dev-skills/skills/scenekit-game-workflow/*	Adds SKILL.md and agent config for SpriteKit and SceneKit implementation, migration posture, and validation workflows.
GameplayKit, input, and haptics skills plugins/game-dev-skills/skills/gameplaykit-simulation-workflow/*, plugins/game-dev-skills/skills/game-controller-input-workflow/*, plugins/game-dev-skills/skills/core-haptics-game-feedback-workflow/*	Adds SKILL.md and agent configs for gameplay simulation, controller input mapping, and haptics feedback design/validation.
Xcode game profiling skill plugins/game-dev-skills/skills/xcode-game-profiling-workflow/*	Adds SKILL.md and agent config for selecting profiling evidence paths and interpreting performance signals.

Repository-wide version bump

Layer / File(s)	Summary
Version bump across manifests and pyproject files pyproject.toml, plugins/*/.codex-plugin/plugin.json, plugins/*/pyproject.toml	Updates version strings from 7.8.0 to 7.9.0 uniformly across the root and all plugin configuration files.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Possibly related PRs

• gaelic-ghost/socket#52: Both PRs update .agents/plugins/marketplace.json to set a child plugin's policy.installation to "AVAILABLE" and policy.authentication to "ON_INSTALL".

Suggested labels: documentation

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch plugin/game-dev-skills

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