fix(runtime): fix early control return and update lifecycle

crates/bsk-protocol/schema/tool_request_help_params.json

@@ -7,6 +7,17 @@
     "session_id"
   ],
   "properties": {
+    "completion_criteria": {
+      "description": "Optional explicit success detector. Navigation by itself is not a completion signal; these criteria must match before the tool can auto-complete without the user clicking Done.",
+      "anyOf": [
+        {
+          "$ref": "#/definitions/HelpCompletionCriteria"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
     "prompt": {
       "description": "Message shown to the user explaining what to do.",
       "type": "string"
@@ -50,6 +61,78 @@
     }
   },
   "definitions": {
+    "HelpCompletionCondition": {
+      "type": "object",
+      "properties": {
+        "selector_exists": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "selector_missing": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "text_exists": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "text_missing": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "url_contains": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "url_matches": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      }
+    },
+    "HelpCompletionCriteria": {
+      "type": "object",
+      "properties": {
+        "all": {
+          "type": [
+            "array",
+            "null"
+          ],
+          "items": {
+            "$ref": "#/definitions/HelpCompletionCondition"
+          }
+        },
+        "any": {
+          "type": [
+            "array",
+            "null"
+          ],
+          "items": {
+            "$ref": "#/definitions/HelpCompletionCondition"
+          }
+        },
+        "stable_for_ms": {
+          "type": [
+            "integer",
+            "null"
+          ],
+          "format": "uint32",
+          "minimum": 0.0
+        }
+      }
+    },
     "HelpTarget": {
       "description": "One component the user is asked to look at / interact with. Exactly one of `ref` / `selector` should be supplied (mirrors the click/fill convention). When neither matches a live element the overlay still shows the prompt and reports the miss via [`ResolvedTarget`].",
       "type": "object",