Add vendor support details to Ecosystem page

[jklahr]

Summary

• Adds an optional "See Details" link on ecosystem vendor tiles that opens a modal dialog showing integration details
• Populates Snowflake's entry as the first example with links to the Ossie converter and system functions
• Other vendors can follow the same pattern to add their own details

How to add details for your organization

Edit data/ecosystem.yml and add a details block to your existing vendor entry. Here's the format:

    - name: "Your Company"
      logo: "your-logo.png"
      details:
        description: "Brief description of your organization's Ossie support."
        features:
          - title: "Feature Name"
            description: "One-sentence explanation of what this feature does."
            url: "https://link-to-docs-or-repo"
            url_label: "Documentation"    # or "View on GitHub", etc.
          - title: "Another Feature"
            description: "Another explanation."
            url: "https://another-link"
            url_label: "Learn more"

All fields under details are optional. You can include just a description, just features, or both. Each feature's url and url_label are also optional.

See the Snowflake entry in this PR for a complete example.

Test plan

• Verify tiles without details still render normally (no "See Details" link)
• Click "See Details" on the Snowflake tile — modal opens with logo, description, and features
• Click the X button or the backdrop to close the modal
• Verify feature links open in a new tab
• Test on mobile viewport widths

.... Generated with Cortex Code

[jklahr]

Screenshots: