Merge main: resolve conflicts, keep plugin-first approach

- Removed re-added collections/ path triggers from CI
- Merged plugin checklist improvements from both branches
- Kept plugin:generate-marketplace script from main
- Removed new ospo-sponsorship collection file (plugin already exists)
- Dropped obsolete plugin:migrate and plugin:refresh scripts

plugins/ospo-sponsorship/.github/plugin/plugin.json

@@ -0,0 +1,10 @@
+{
+  "name": "ospo-sponsorship",
+  "description": "Tools and resources for Open Source Program Offices (OSPOs) to identify, evaluate, and manage sponsorship of open source dependencies through GitHub Sponsors, Open Collective, and other funding platforms.",
+  "version": "1.0.0",
+  "author": {
+    "name": "Awesome Copilot Community"
+  },
+  "repository": "https://github.com/github/awesome-copilot",
+  "license": "MIT"
+}

plugins/ospo-sponsorship/README.md

@@ -0,0 +1,26 @@
+# Open Source Sponsorship Plugin
+
+Tools and resources for Open Source Program Offices (OSPOs) to identify, evaluate, and manage sponsorship of open source dependencies through GitHub Sponsors, Open Collective, and other funding platforms.
+
+## Installation
+
+```bash
+# Using Copilot CLI
+copilot plugin install ospo-sponsorship@awesome-copilot
+```
+
+## What's Included
+
+### Skills
+
+| Skill | Description |
+|-------|-------------|
+| `SKILL.md` | Find which of a GitHub repository's dependencies are sponsorable via GitHub Sponsors. Uses deps.dev API for dependency resolution across npm, PyPI, Cargo, Go, RubyGems, Maven, and NuGet. Checks npm funding metadata, FUNDING.yml files, and web search. Verifies every link. Shows direct and transitive dependencies with OSSF Scorecard health data. Invoke by providing a GitHub owner/repo (e.g. "find sponsorable dependencies in expressjs/express"). |
+
+## Source
+
+This plugin is part of [Awesome Copilot](https://github.com/github/awesome-copilot), a community-driven collection of GitHub Copilot extensions.
+
+## License
+
+MIT

plugins/ospo-sponsorship/skills/sponsor-finder

@@ -0,0 +1 @@
+../../../skills/sponsor-finder