Fix MCP gateway server authentication in connectivity checks

[Copilot]

The MCP gateway startup fails when checking server connectivity because the check script doesn't authenticate requests, resulting in 401 errors for all gatewayed servers.

Changes

Modified check_mcp_servers.sh:

• Added fallback to use gateway API key when server configs lack explicit Authorization headers
• Maintains backward compatibility for configs with explicit headers

Updated check_mcp_servers_test.sh:

• Added test coverage for gateway API key fallback behavior

Technical Details

The gateway outputs server configs without Authorization headers in individual server objects. The check script receives the gateway API key as a parameter but wasn't using it as a fallback:

# Before: Only checked config, reported "Authentication: None"
AUTH_HEADER=""
if echo "$SERVER_CONFIG" | jq -e '.headers.Authorization' >/dev/null 2>&1; then
  AUTH_HEADER=$(echo "$SERVER_CONFIG" | jq -r '.headers.Authorization')
fi

# After: Falls back to gateway API key parameter
AUTH_HEADER=""
if echo "$SERVER_CONFIG" | jq -e '.headers.Authorization' >/dev/null 2>&1; then
  AUTH_HEADER=$(echo "$SERVER_CONFIG" | jq -r '.headers.Authorization')
elif [ -n "$GATEWAY_API_KEY" ]; then
  AUTH_HEADER="$GATEWAY_API_KEY"
fi

This allows gatewayed servers to authenticate properly during startup validation.

Original prompt

Fix the failing GitHub Actions workflow agent

Analyze the workflow logs, identify the root cause of the failure, and implement a fix.

Job ID: 59999733473

Job URL: https://github.com/githubnext/gh-aw/actions/runs/20882025812/job/59999733473

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[github-actions]

📰 DEVELOPING STORY: Smoke Copilot reports failed. Our correspondents are investigating the incident...

[github-actions]

🌑 The shadows whisper... Smoke Codex failed. The oracle requires further meditation...

[github-actions]

💫 TO BE CONTINUED... Smoke Claude failed! Our hero faces unexpected challenges...

[github-actions]

💀 Blimey! Changeset Generator failed and walked the plank! No treasure today, matey! ☠️