fix(agent): honor explicit web search requests

Promote explicit web-search phrasing to tool use and keep web_search/web_fetch available for that turn even when the stale web toggle is false.

src/action_intents.py

@@ -91,6 +91,9 @@ _ROUTING_PATTERNS: tuple[tuple[str, str, Pattern[str]], ...] = tuple(
         ("ui", "tool or feature toggle request", r"\b(?:disable|enable|turn\s+(?:on|off))\s+(?:the\s+)?(?:shell|search|web|browser|documents?|memory|skills|images?|calendar|email|mail|research|incognito)\b"),
 
         # Deep research jobs, not quick conceptual mentions of research.
+        ("web", "explicit web search request", rf"{_PLEASE}(?:do|run|use|perform|make)\s+(?:a\s+)?(?:web\s+search|search\s+the\s+web)\b.+"),
+        ("web", "web lookup imperative request", rf"{_PLEASE}(?:web\s+search|search\s+the\s+web|search\s+online|look\s+up|google)\b.+"),
+        ("web", "assistant web lookup request", rf"{_ACTION_QUESTION}(?:web\s+search|search\s+the\s+web|search\s+online|look\s+up|google)\b.+"),
         ("research", "deep research imperative request", rf"{_PLEASE}(?:research|deep\s+dive|look\s+into|investigate)\s+.+"),
         ("research", "assistant deep research request", rf"{_ACTION_QUESTION}(?:research|do\s+research|deep\s+dive|look\s+into|investigate)\s+.+"),
 

src/agent_loop.py

@@ -2099,11 +2099,12 @@ async def stream_agent_loop(
     # tool, so we don't nudge on harmless transitional text like "let me
     # know what you think".
     _INTENT_RE = re.compile(
-        r"(?:^|\n)\s*(?:let me|i'?ll|i will|going to|let's)\s+"
+        r"(?:^|\n)\s*(?:let me|i'?ll|i will|i need to|we need to|need to|"
+        r"i should|we should|i must|we must|going to|let's)\s+"
         r"(?:tail|check|investigate|look at|see|tail|read|fetch|inspect|"
         r"verify|diagnose|examine|debug|capture|grab|pull|view|run|call|"
         r"trigger|launch|start|kick off|stop|kill|restart|adopt|serve|"
-        r"register|adopt|list|search|find|query|hit|ping|test)"
+        r"register|adopt|list|search|find|query|hit|ping|test|use|perform|do)"
         r"\b[^.\n]{0,140}",
         re.IGNORECASE,
     )

src/tool_index.py

@@ -384,6 +384,10 @@ class ToolIndex:
                    "delegate to", "have model"}):
             {"chat_with_model", "ask_teacher", "list_models"},
         # Deep research intent (incl. common typo "reserach")
+        frozenset({"web search", "search the web", "search online", "look up",
+                   "google", "latest", "current", "news", "weather",
+                   "forecast", "stock price", "price of"}):
+            {"web_search", "web_fetch"},
         frozenset({"research", "reserach", "reasearch", "look into", "investigate",
                    "deep dive", "deep research", "find out about", "study up on",
                    "report on", "do research", "look up everything"}):