feat(tasks): add skill-templated task graph execution

app-instance/backend/beaver/tasks/router.py

@@ -4,6 +4,7 @@ from __future__ import annotations
 
 import asyncio
 import json
+import re
 from typing import Any
 
 from .models import MainAgentDecision, TaskRecord
@@ -24,6 +25,15 @@ class MainAgentRouter:
         thinking_enabled: bool | None = None,
         timeout_seconds: float = 8.0,
     ) -> MainAgentDecision:
+        if active_task is None and _is_obvious_simple_chat(message):
+            return MainAgentDecision(mode="simple", reason="obvious_simple_chat", action="simple_chat")
+        if active_task is None and _is_obvious_task_request(message):
+            return MainAgentDecision(
+                mode="task",
+                reason="obvious_task",
+                starts_new_task=True,
+                action="create_task",
+            )
         if provider is None:
             return self._apply_active_task_boundary(
                 self._fallback(active_task=active_task, reason="router_provider_unavailable"),
@@ -246,6 +256,64 @@ def _clean_short_title(value: Any) -> str | None:
     return title[:40] or None
 
 
+def _is_obvious_simple_chat(message: str) -> bool:
+    text = _compact_text(message).lower().strip("!！?？。.,，~～")
+    if not text:
+        return False
+    if _has_url_or_path(text) or _looks_like_fresh_task_request(text):
+        return False
+    if len(text) <= 24 and text in {
+        "hi",
+        "hello",
+        "hey",
+        "thanks",
+        "thankyou",
+        "thankyou!",
+        "谢谢",
+        "谢了",
+        "多谢",
+        "你好",
+        "您好",
+        "嗨",
+        "在吗",
+        "早上好",
+        "下午好",
+        "晚上好",
+        "辛苦了",
+    }:
+        return True
+    simple_prefixes = (
+        "翻译",
+        "translate",
+        "润色",
+        "改写",
+        "校对",
+        "总结下面",
+        "总结这段",
+        "摘要下面",
+        "summarize this",
+    )
+    return len(text) <= 1200 and text.startswith(simple_prefixes)
+
+
+def _is_obvious_task_request(message: str) -> bool:
+    text = _compact_text(message)
+    if not text:
+        return False
+    if _looks_like_explicit_task_followup(text):
+        return False
+    if _has_url_or_path(text):
+        return True
+    return _looks_like_fresh_task_request(text)
+
+
+def _has_url_or_path(text: str) -> bool:
+    return bool(
+        re.search(r"https?://|www\.", text)
+        or re.search(r"(^|[\s'\"`])(?:[./~]|[a-zA-Z]:[\\/])[^\s'\"`]+", text)
+    )
+
+
 def _looks_like_explicit_task_followup(message: str) -> bool:
     text = _compact_text(message)
     if not text:
@@ -307,6 +375,16 @@ def _looks_like_fresh_task_request(message: str) -> bool:
         "看看最新",
         "最新",
         "今天",
+        "昨天",
+        "昨日",
+        "昨晚",
+        "刚刚",
+        "最近",
+        "近期",
+        "本届",
+        "本场",
+        "这场",
+        "上一场",
         "明天",
         "上传",
         "下载",
@@ -324,6 +402,12 @@ def _looks_like_fresh_task_request(message: str) -> bool:
         "look up",
         "latest",
         "today",
+        "yesterday",
+        "last night",
+        "recent",
+        "recently",
+        "this match",
+        "this game",
         "tomorrow",
         "upload",
         "download",