Fix staticcheck S1009 lint error: remove redundant nil check on map

[Copilot]

The lint-go workflow was failing with staticcheck S1009 in pkg/cli/mcp_inspect.go:253.

Changes

• Removed redundant nil check before len() call on map in buildFrontmatterFromWorkflowData()

In Go, len() on nil maps returns 0, making the nil check unnecessary:

// Before
if workflowData.Tools != nil && len(workflowData.Tools) > 0 {

// After  
if len(workflowData.Tools) > 0 {

Original prompt

Fix the failing GitHub Actions workflow lint-go
Analyze the workflow logs, identify the root cause of the failure, and implement a fix.
Job ID: 61501187403
Job URL: https://github.com/githubnext/gh-aw/actions/runs/21366942396/job/61501187403

Custom agent used: ci-cleaner
Tidies up the repository CI state by formatting sources, running linters, fixing issues, running tests, and recompiling workflows

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