fix(rectification): surface dropped probes and filter tools by the decision

Silent unrenderable discriminators, a missing question-contract golden, and a always-on tool table were hiding fail-closed drops behind the prompt wall.

Co-authored-by: Cursor <cursoragent@cursor.com>

contracts/probe-question-v1.json

@@ -0,0 +1,64 @@
+{
+  "version": "probe-question-v1",
+  "answer_classes": [
+    "yes",
+    "weak_yes",
+    "no",
+    "unsure"
+  ],
+  "label_min": 4,
+  "label_max": 80,
+  "forbidden_copy_tokens": [
+    "外貌",
+    "体质",
+    "胎记",
+    "疤痕",
+    "伤疤",
+    "身高",
+    "体型"
+  ],
+  "existence_style_options": [
+    {
+      "label": "明确发生且时间吻合",
+      "answer_class": "yes"
+    },
+    {
+      "label": "发生过但程度较弱",
+      "answer_class": "weak_yes"
+    },
+    {
+      "label": "明确没有发生",
+      "answer_class": "no"
+    },
+    {
+      "label": "这段记不清楚",
+      "answer_class": "unsure"
+    }
+  ],
+  "quality_style_options": [
+    {
+      "label": "发挥明显失常或压力很大",
+      "answer_class": "yes"
+    },
+    {
+      "label": "有压力但不算明显失常",
+      "answer_class": "weak_yes"
+    },
+    {
+      "label": "发挥正常、没有明显失常",
+      "answer_class": "no"
+    },
+    {
+      "label": "这段记不清楚",
+      "answer_class": "unsure"
+    }
+  ],
+  "varga_none_style_option": {
+    "label": "都不是这些特质",
+    "answer_class": "no"
+  },
+  "unsure_style_option": {
+    "label": "这段记不清楚",
+    "answer_class": "unsure"
+  }
+}