Portal model provider filter displays providers as duplicate "Unknown agent" entries #1469

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Summary

The Portal Models page does not display model provider names correctly in the Provider filter. Instead, it shows two separate entries that are both labeled Unknown agent, with different model counts.

Steps to reproduce

1. Open the Scope Portal.
2. Navigate to the Models page.
3. Expand or inspect the Provider filter in the right-side filter rail.
4. Observe the provider options.

The issue appears consistently in the affected deployment. The filter currently shows duplicate labels such as Unknown agent (18) and Unknown agent (286) while the models are associated with distinct providers/agents.

Expected behavior

Each Provider filter option should display the correct, distinct model provider name, such as the configured Copilot or Anthropic provider name. Provider values should not be derived from a missing or incorrectly resolved agent display name.

Actual behavior

All provider groups are rendered as Unknown agent, resulting in duplicate, indistinguishable filter options with different counts. This prevents users from understanding or reliably filtering models by provider.

Environment and logs

• Area: Portal, Models page
• Deployment: hosted Scope Portal
• Observed on: October 7, 2026
• Browser/Scope version: not captured
• No relevant logs or errors were visible in the UI.
• A screenshot showing the duplicate Unknown agent provider entries was captured when reporting this issue.