refactor: replace agent-control MCP with labels system and Paseo MCP

packages/cli/src/commands/agent/ls.ts

@@ -82,6 +82,10 @@ export interface AgentLsOptions extends CommandOptions {
   status?: string
   /** Filter by specific cwd (overrides default cwd filtering) */
   cwd?: string
+  /** Filter by labels (key=value format) */
+  label?: string[]
+  /** Filter to UI agents only (equivalent to --label ui=true) */
+  ui?: boolean
 }
 
 /**
@@ -145,6 +149,46 @@ export async function runLsCommand(
       })
     }
 
+    // Label filtering:
+    // Parse --label flags and --ui flag
+    // --ui is equivalent to --label ui=true
+    // By default (no --ui flag), show background agents (those WITHOUT ui=true)
+    const labelFilters: Record<string, string> = {}
+    if (options.label) {
+      for (const labelStr of options.label) {
+        const eqIndex = labelStr.indexOf('=')
+        if (eqIndex !== -1) {
+          const key = labelStr.slice(0, eqIndex)
+          const value = labelStr.slice(eqIndex + 1)
+          labelFilters[key] = value
+        }
+      }
+    }
+    // Add ui=true filter if --ui flag is set
+    if (options.ui) {
+      labelFilters['ui'] = 'true'
+    }
+
+    // Apply label filtering
+    if (Object.keys(labelFilters).length > 0) {
+      // Filter to agents that have ALL specified labels (AND semantics)
+      agents = agents.filter((a) => {
+        const agentLabels = (a as any).labels as Record<string, string> | undefined
+        for (const [key, value] of Object.entries(labelFilters)) {
+          if (!agentLabels || agentLabels[key] !== value) {
+            return false
+          }
+        }
+        return true
+      })
+    } else {
+      // Default: show background agents only (those without ui=true)
+      agents = agents.filter((a) => {
+        const agentLabels = (a as any).labels as Record<string, string> | undefined
+        return !agentLabels || agentLabels['ui'] !== 'true'
+      })
+    }
+
     await client.close()
 
     // Sort agents: running first, then idle, then others; within each group, most recent first