plugin: add network protocol skills

[gaelic-ghost]

Summary:

• Adds the network-protocol-skills plugin with transport selection, HTTP/3/QUIC, MoQ, WebRTC, and protocol diagnostics workflows.
• Wires the plugin into the Socket marketplace and root docs.
• Adds icon assets for the new plugin and existing Socket plugins that were missing manifest icons.
• Bumps shared Socket version surfaces to 8.1.0 for the requested minor release.

Verification:

• uv run scripts/validate_socket_metadata.py

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 4339bd17-98da-40b1-8f45-c1663dfb7ed8

📥 Commits

Reviewing files that changed from the base of the PR and between 77c2ac5 and ab37043.

⛔ Files ignored due to path filters (17)

• plugins/agent-portability-skills/uv.lock is excluded by !**/*.lock
• plugins/apple-dev-skills/uv.lock is excluded by !**/*.lock
• plugins/cardhop-app/assets/cardhop-app-icon.svg is excluded by !**/*.svg
• plugins/cardhop-app/mcp/uv.lock is excluded by !**/*.lock
• plugins/codex-utilities/assets/codex-utilities-icon.svg is excluded by !**/*.svg
• plugins/game-dev-skills/assets/game-dev-skills-icon.svg is excluded by !**/*.svg
• plugins/network-protocol-skills/assets/network-protocol-icon-generated.png is excluded by !**/*.png
• plugins/network-protocol-skills/assets/network-protocol-icon.svg is excluded by !**/*.svg
• plugins/productivity-skills/uv.lock is excluded by !**/*.lock
• plugins/python-skills/uv.lock is excluded by !**/*.lock
• plugins/reverse-engineering-skills/assets/reverse-engineering-icon.svg is excluded by !**/*.svg
• plugins/spotify/assets/spotify-icon.svg is excluded by !**/*.svg
• plugins/swiftasb-skills/assets/swiftasb-skills-icon.svg is excluded by !**/*.svg
• plugins/things-app/assets/things-app-icon.svg is excluded by !**/*.svg
• 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 (43)

• .agents/plugins/marketplace.json
• CONTRIBUTING.md
• README.md
• ROADMAP.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/cloud-deployment-skills/.codex-plugin/plugin.json
• plugins/codex-utilities/.codex-plugin/plugin.json
• plugins/dotnet-skills/.codex-plugin/plugin.json
• plugins/game-dev-skills/.codex-plugin/plugin.json
• plugins/network-protocol-skills/.codex-plugin/plugin.json
• plugins/network-protocol-skills/AGENTS.md
• plugins/network-protocol-skills/skills/choose-network-transport/SKILL.md
• plugins/network-protocol-skills/skills/choose-network-transport/agents/openai.yaml
• plugins/network-protocol-skills/skills/http3-quic-workflow/SKILL.md
• plugins/network-protocol-skills/skills/http3-quic-workflow/agents/openai.yaml
• plugins/network-protocol-skills/skills/network-protocol-diagnostics/SKILL.md
• plugins/network-protocol-skills/skills/network-protocol-diagnostics/agents/openai.yaml
• plugins/network-protocol-skills/skills/realtime-media-over-quic-workflow/SKILL.md
• plugins/network-protocol-skills/skills/realtime-media-over-quic-workflow/agents/openai.yaml
• plugins/network-protocol-skills/skills/webrtc-workflow/SKILL.md
• plugins/network-protocol-skills/skills/webrtc-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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch plugin/network-protocol-skills

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