feat: add per-agent logging UI and fix stuck agent issues

Changes:
- Add per-agent log viewer with copy-to-clipboard functionality
  - New AgentLogEntry type for structured log entries
  - Logs stored per-agent in WebSocket state (up to 500 entries)
  - Log modal rendered via React Portal to avoid overflow issues
  - Click log icon on agent card to view full activity history

- Fix agents getting stuck in "failed" state
  - Wrap client context manager in try/except (agent.py)
  - Remove failed agents from UI on error state (useWebSocket.ts)
  - Handle permanently failed features in get_all_complete()

- Add friendlier agent state labels
  - "Hit an issue" → "Trying plan B..."
  - "Retrying..." → "Being persistent..."
  - Softer colors (yellow/orange instead of red)

- Add scheduling scores for smarter feature ordering
  - compute_scheduling_scores() in dependency_resolver.py
  - Features that unblock others get higher priority

- Update CLAUDE.md with parallel mode documentation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

ui/src/components/AgentMissionControl.tsx

@@ -1,8 +1,8 @@
 import { Rocket, ChevronDown, ChevronUp, Activity } from 'lucide-react'
 import { useState } from 'react'
-import { AgentCard } from './AgentCard'
+import { AgentCard, AgentLogModal } from './AgentCard'
 import { ActivityFeed } from './ActivityFeed'
-import type { ActiveAgent } from '../lib/types'
+import type { ActiveAgent, AgentLogEntry } from '../lib/types'
 
 const ACTIVITY_COLLAPSED_KEY = 'autocoder-activity-collapsed'
 
@@ -15,12 +15,14 @@ interface AgentMissionControlProps {
     featureId: number
   }>
   isExpanded?: boolean
+  getAgentLogs?: (agentIndex: number) => AgentLogEntry[]
 }
 
 export function AgentMissionControl({
   agents,
   recentActivity,
   isExpanded: defaultExpanded = true,
+  getAgentLogs,
 }: AgentMissionControlProps) {
   const [isExpanded, setIsExpanded] = useState(defaultExpanded)
   const [activityCollapsed, setActivityCollapsed] = useState(() => {
@@ -30,6 +32,8 @@ export function AgentMissionControl({
       return false
     }
   })
+  // State for log modal
+  const [selectedAgentForLogs, setSelectedAgentForLogs] = useState<ActiveAgent | null>(null)
 
   const toggleActivityCollapsed = () => {
     const newValue = !activityCollapsed
@@ -80,7 +84,16 @@ export function AgentMissionControl({
           {/* Agent Cards Row */}
           <div className="flex gap-4 overflow-x-auto pb-4 scrollbar-thin">
             {agents.map((agent) => (
-              <AgentCard key={`agent-${agent.agentIndex}`} agent={agent} />
+              <AgentCard
+                key={`agent-${agent.agentIndex}`}
+                agent={agent}
+                onShowLogs={(agentIndex) => {
+                  const agentToShow = agents.find(a => a.agentIndex === agentIndex)
+                  if (agentToShow) {
+                    setSelectedAgentForLogs(agentToShow)
+                  }
+                }}
+              />
             ))}
           </div>
 
@@ -116,6 +129,15 @@ export function AgentMissionControl({
           )}
         </div>
       </div>
+
+      {/* Log Modal */}
+      {selectedAgentForLogs && getAgentLogs && (
+        <AgentLogModal
+          agent={selectedAgentForLogs}
+          logs={getAgentLogs(selectedAgentForLogs.agentIndex)}
+          onClose={() => setSelectedAgentForLogs(null)}
+        />
+      )}
     </div>
   )
 }