fix(bot): 反馈卡分支过滤掉项目级伪 ontology (variant=goal/projectMode)

每张反馈卡的第一个 "分支" 都是项目目标节点本身 (含 prompt 文字),
不是真分支. 用 variant=goal / projectMode=true 标记过滤掉.

Loop 3 of metacognitive iteration on bot ↔ canvas closed loop.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: nieao

server/feishu-bot.mjs

@@ -602,7 +602,13 @@ function buildFeedbackCard(room, ctx, conclusionNode, newNodes) {
   else if (/NO[\s_-]*GO/i.test(decision)) headerTpl = 'red'
 
   // 列出 ontology (非结论) 分支
-  const ontologyBranches = newNodes.filter((n) => n.type === 'ontologyNode' && !n.data?.isConclusion)
+  // 排除项目级伪 ontology — 项目目标节点 (variant=goal) / projectMode=true 是项目根节点本身, 不是真分支
+  const ontologyBranches = newNodes.filter((n) => {
+    if (n.type !== 'ontologyNode' || n.data?.isConclusion) return false
+    if (n.data?.variant === 'goal') return false
+    if (n.data?.projectMode === true) return false
+    return true
+  })
   const branchLines = ontologyBranches.slice(0, 8).map((n) => {
     const title = String(n.data?.title || n.data?.label || '').slice(0, 60)
     const body = String(n.data?.description || n.data?.content || '').slice(0, 80)