feat: add reasoning effort support for Codex models

- Add ReasoningEffortSelector component for UI selection
- Integrate reasoning effort in feature creation/editing dialogs
- Add reasoning effort support to phase model selector
- Update agent service and board actions to handle reasoning effort
- Add reasoning effort fields to feature and settings types
- Update model selector and agent info panel with reasoning effort display
- Enhance agent context parser for reasoning effort processing

Reasoning effort allows fine-tuned control over Codex model reasoning
capabilities, providing options from 'none' to 'xhigh' for different
task complexity requirements.

apps/ui/src/components/views/board-view/dialogs/add-feature-dialog.tsx

@@ -41,9 +41,12 @@ import {
   PlanningMode,
   Feature,
 } from '@/store/app-store';
+import type { ReasoningEffort } from '@automaker/types';
+import { codexModelHasThinking, supportsReasoningEffort } from '@automaker/types';
 import {
   ModelSelector,
   ThinkingLevelSelector,
+  ReasoningEffortSelector,
   ProfileQuickSelect,
   TestingTabContent,
   PrioritySelector,
@@ -78,6 +81,7 @@ type FeatureData = {
   skipTests: boolean;
   model: AgentModel;
   thinkingLevel: ThinkingLevel;
+  reasoningEffort: ReasoningEffort;
   branchName: string; // Can be empty string to use current branch
   priority: number;
   planningMode: PlanningMode;
@@ -134,6 +138,7 @@ export function AddFeatureDialog({
     skipTests: false,
     model: 'opus' as ModelAlias,
     thinkingLevel: 'none' as ThinkingLevel,
+    reasoningEffort: 'none' as ReasoningEffort,
     branchName: '',
     priority: 2 as number, // Default to medium priority
   });
@@ -220,6 +225,9 @@ export function AddFeatureDialog({
     const normalizedThinking = modelSupportsThinking(selectedModel)
       ? newFeature.thinkingLevel
       : 'none';
+    const normalizedReasoning = supportsReasoningEffort(selectedModel)
+      ? newFeature.reasoningEffort
+      : 'none';
 
     // Use current branch if toggle is on
     // If currentBranch is provided (non-primary worktree), use it
@@ -260,6 +268,7 @@ export function AddFeatureDialog({
       skipTests: newFeature.skipTests,
       model: selectedModel,
       thinkingLevel: normalizedThinking,
+      reasoningEffort: normalizedReasoning,
       branchName: finalBranchName,
       priority: newFeature.priority,
       planningMode,
@@ -281,6 +290,7 @@ export function AddFeatureDialog({
       model: 'opus',
       priority: 2,
       thinkingLevel: 'none',
+      reasoningEffort: 'none',
       branchName: '',
     });
     setUseCurrentBranch(true);
@@ -394,6 +404,9 @@ export function AddFeatureDialog({
   const newModelAllowsThinking =
     !isCurrentModelCursor && modelSupportsThinking(newFeature.model || 'sonnet');
 
+  // Codex models that support reasoning effort - show reasoning selector
+  const newModelAllowsReasoning = supportsReasoningEffort(newFeature.model || '');
+
   return (
     <Dialog open={open} onOpenChange={handleDialogClose}>
       <DialogContent
@@ -619,6 +632,14 @@ export function AddFeatureDialog({
                     }
                   />
                 )}
+                {newModelAllowsReasoning && (
+                  <ReasoningEffortSelector
+                    selectedEffort={newFeature.reasoningEffort}
+                    onEffortSelect={(effort) =>
+                      setNewFeature({ ...newFeature, reasoningEffort: effort })
+                    }
+                  />
+                )}
               </>
             )}
           </TabsContent>