[plan] Release MCP inspector sub-contexts promptly after each operation

[github-actions]

Objective

In pkg/cli/mcp_inspect_mcp.go, call cancel() immediately after each sequential MCP operation (ListTools, ListResources, ListPrompts) instead of deferring, to release context resources promptly.

Context

From discussion #18080 (go-sdk module review): The connectStdioMCPServer and connectHTTPMCPServer functions create three WithTimeout sub-contexts sequentially and cancel them via defer. Since only one operation runs at a time, cancelling immediately after each operation is complete (rather than at function return) releases timer resources sooner.

File to Modify

pkg/cli/mcp_inspect_mcp.go — connectStdioMCPServer and connectHTTPMCPServer functions

Change Required

// Before — deferred cancel held until function return
listToolsCtx, cancel := context.WithTimeout(ctx, MCPOperationTimeout)
defer cancel()
toolsResult, err := session.ListTools(listToolsCtx, ...)

// After — cancel immediately after operation completes
listToolsCtx, cancel := context.WithTimeout(ctx, MCPOperationTimeout)
toolsResult, err := session.ListTools(listToolsCtx, ...)
cancel()

Apply the same pattern to the ListResources and ListPrompts context pairs.

Acceptance Criteria

• All three sequential sub-context cancel() calls are invoked immediately after use (not deferred) in both connectStdioMCPServer and connectHTTPMCPServer
• make test-unit passes
• make agent-finish passes

Generated by Plan Command for issue #discussion #18080

• expires on Feb 27, 2026, 12:38 PM UTC