Prepare agent skills for OpenAI submission

[Aymericr]

The current Pascal skill bundle installs through Git marketplaces, but its OpenAI compatibility manifest exceeds public-directory limits and the repository has no portable Agent Plugins manifest. The shared publishing fixtures also sit under skills/ as an immediate directory without a SKILL.md, which is invalid for skills-only archive ingestion.

This change prepares bundle 0.1.5 for an OpenAI skills-only submission:

• adds the portable root plugin.json and keeps the compatibility manifest aligned;
• shortens the listing subtitle and starter prompt to final directory limits;
• adds public website, support, privacy, and terms URLs plus square bundled icons;
• moves cross-skill publishing fixtures outside skills/;
• validates the portable schema marker, listing limits, URLs, assets, skill-directory shape, and manifest consistency.

This does not submit, review, publish, or claim a public Plugins Directory listing.

Validation:

• bun scripts/validate-skills.ts
• claude plugin validate . --strict
• git diff --check
• clean isolated Codex marketplace add/install at version 0.1.5
• 31-entry, 44 KB skills-only ZIP integrity and archive-limit check
• public listing URLs returned HTTP 200

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Note

Low Risk
Packaging, manifest metadata, validator, and doc changes only; no runtime or skill instruction logic is modified.

Overview
Prepares bundle 0.1.5 for an OpenAI skills-only directory submission without changing skill behavior.

Adds a portable root plugin.json (Agent Plugins schema) whose extensions.com.openai.interface must stay identical to .codex-plugin/plugin.json, and bumps Claude/Codex marketplace manifests to 0.1.5. OpenAI-facing copy is tightened to listing limits (30-char subtitle, 128-char starter prompts), screenshots is removed, human-readable capabilities replace generic flags, and website/support/privacy/terms URLs plus assets/pascal-mark.svg branding are wired in.

Cross-skill publishing-cases.json moves from skills/ to plugin-evals/ so skills/ contains only valid skill directories for archive ingestion. scripts/validate-skills.ts enforces portable schema parity, OpenAI metadata limits, HTTPS URLs, bundled icon paths, no screenshots on skills-only packages, and unexpected top-level skills/ directories. Docs (skills/README.md, skills/VALIDATION.md) record the submission-readiness candidate and expanded validator scope.

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[pascal]

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Error id: fd03c9d8-218a-4533-b23e-b2fb3833839a