Add the ChatGPT/Codex plugin and update the skill for TryPost 2.0

[paulocastellano]

What

• OpenAI plugin directory (ChatGPT / Codex): adds .codex-plugin/plugin.json with the listing (name, subtitle, description, category, website/support/privacy/terms URLs, starter prompts, brand color), the 5 positive and 3 negative review test cases, and commerce: false. .mcp.json declares the hosted MCP server with OAuth through Dynamic Client Registration.
• Square icon: assets/icon-512.png (512×512). The OpenAI directory refuses non-square icons and icon.png is 175×164.
• Skill rewritten for TryPost 2.0: one channel per post (social_account_id, content_type, meta at the top level), create-posts-tool for one post per destination, pending_approval, all 83 registered tools, Google Business Profile. Removes the pre-2.0 platforms[] model, partially_published and the tools that no longer exist.
• One description everywhere: Claude, Cursor and Grok manifests use the same text as the Claude directory listing, without a network count. Version 2.0.0, matching TryPost.
• README: ChatGPT/Codex section with the command that builds the upload ZIP.
• .mcp.json declares "type": "http": without it claude plugin validate failed (Claude Code reads .mcp.json at the plugin root and drops a remote server with no type). OpenAI's own plugins (Figma, Notion, Linear) use the same field.
• Tests in TypeScript: node --test runs the .ts files directly on Node 24+, with no build step and no package.json. They cover every manifest (same name, version and description; existing paths), the MCP configuration (same URL everywhere, OAuth via DCR, no credentials), the OpenAI listing limits, icons and review cases, the skill (2.0 model, every network, root and plugin copies identical) and the repository layout the Claude directory checks.
• CI (.github/workflows/tests.yml): runs the tests, type-checks them with tsc (TypeScript 7.0.2, pinned), validates the Claude plugin with claude plugin validate --strict and builds the OpenAI plugin ZIP as an artifact. Workflows moved to the Node 24 actions (v7).
• AGENTS.md: the rules of the repository (TypeScript only, no package.json, tests and CI on every change, manifests in sync, OpenAI listing limits, how the skill is written).
• README: drops the Asset Library (removed in TryPost 2.0) and says what the plugin runs and where it sends data, which the Claude directory's security scan asks for.

Build the ZIP

git archive --format=zip --prefix=trypost/ -o trypost-plugin.zip HEAD .codex-plugin .mcp.json skills assets

Still needed before submitting to OpenAI

• Domain verification: serve the token from the portal at https://app.trypost.it/.well-known/openai-apps-challenge (trypost app, not this package)
• readOnlyHint, destructiveHint and openWorldHint set explicitly on every MCP tool (trypost app)
• supportURL is https://docs.trypost.it/support
• Demo video URL and reviewer test account, entered in the dashboard
• docs.trypost.it tools reference still documents platforms[] and partially_published