Filter disabled jobs from CLI and MCP server output

[Copilot]

Disabled Jenkins jobs were appearing in list-jobs output and as inner jobs in get-job results, cluttering the display with non-actionable items.

Changes

• listJobs(): Filter jobs where Color starts with "disabled" before display
• getJob(): Filter disabled inner jobs in folders/multi-branch pipelines
• MCP handlers: Apply same filtering to list_jobs and get_job tools

The filter catches both "disabled" and "disabled_anime" states via prefix matching:

enabledJobs := []gojenkins.InnerJob{}
for _, job := range jobs {
    if !strings.HasPrefix(job.Color, "disabled") {
        enabledJobs = append(enabledJobs, job)
    }
}

Original prompt

Do not print disabled jobs.

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