[Bug] `/context` command duplicates and fails to return results when using databricks claude anthropic endpoint

Bug Description
The /context command fails when using Claude Code with Databricks as a proxy. The command triggers API calls that Databricks endpoints don't support, resulting in 404 errors.

Environment Info

• Platform: darwin
• Terminal: ghostty
• Version: 2.0.71
• Feedback ID:
• Model: databricks-claude-opus-4-5
• Databrick endpoint: https://adb-workspace.azuredatabricks.net/serving-endpoints/anthropic

Configuration

Using Databricks as proxy via ~/.claude/settings.json:

  {
    "env": {
      "ANTHROPIC_MODEL": "databricks-claude-opus-4-5",
      "ANTHROPIC_BASE_URL": "https://adb-xxx.azuredatabricks.net/serving-endpoints/anthropic"
    }
  }

Steps to Reproduce

1. Configure Claude Code to use Databricks as a proxy
2. Run /context command

Expected Behavior

/context should either work or show a clear error message that it's not supported for third-party proxies.

Actual Behavior

The command fails silently (no visible error in the UI). Debug logs show repeated 404 errors:

[ERROR] Error: Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations

Errors

[{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.948Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.948Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.949Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.949Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.949Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.954Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.954Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.966Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.966Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.966Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.966Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.966Z"},{"error":"Error: 404 Path must be of form /serving-endpoints/<endpoint_name>/invocations or /serving-endpoints/<endpoint_name>/served-models/<served_model_name>/invocations\n    at generate (/$bunfs/root/claude:412:10531)\n    at makeRequest (/$bunfs/root/claude:749:5434)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T02:45:14.972Z"},

Note: Error logs were truncated.

<img width="1236" height="684" alt="Image" src="https://github.com/user-attachments/assets/71bd0980-04c5-4b26-9380-1a328f11244f" />