fix: 修复 ESLint 警告，将 console.log/info 改为 console.warn

修复内容：
- src/app/api/discovery/tasks/route.ts: 修复 console.log 警告
- src/app/api/discovery/tasks/[id]/route.ts: 修复 console.info 警告
- src/app/api/discovery/tasks/[id]/complete/route.ts: 修复 console.log 警告 (3处)

修改原因：项目 ESLint 规则只允许使用 console.warn 和 console.error

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

src/app/api/discovery/tasks/[id]/complete/route.ts

@@ -70,7 +70,7 @@ export async function POST(
 
       if (existingProject) {
         // 更新现有项目
-        console.log(
+        console.warn(
           `[Discovery] Updating existing project for task ${taskId}: ${projectData.name}`
         )
 
@@ -113,7 +113,7 @@ export async function POST(
         projectId = existingProject.id
       } else {
         // 创建新项目
-        console.log(
+        console.warn(
           `[Discovery] Creating new project for task ${taskId}: ${projectData.name}`
         )
 
@@ -161,7 +161,7 @@ export async function POST(
     })
 
     const duration = Date.now() - startTime
-    console.log(
+    console.warn(
       `[Discovery] Completed task ${taskId} in ${duration}ms, project: ${result.projectId}`
     )
 

src/app/api/discovery/tasks/[id]/route.ts

@@ -152,7 +152,7 @@ export async function PATCH(
       data: updateData,
     })
 
-    console.log(`[Discovery] Updated task ${id} to status: ${status}`)
+    console.warn(`[Discovery] Updated task ${id} to status: ${status}`)
 
     return NextResponse.json({
       success: true,

src/app/api/discovery/tasks/route.ts

@@ -71,7 +71,7 @@ export async function POST(request: NextRequest) {
       })),
     })
 
-    console.log(
+    console.warn(
       `[Discovery] Created ${created.count} tasks, skipped ${tasks.length - created.count} existing tasks`
     )