fix: unique room names per session, JT_ROOM dispatch, dispatch-first prompt

- token_server: generate voice-{uuid8} room name per request so each
  browser session creates a fresh room and triggers agent dispatch
- token claim: add jobType JT_ROOM to roomConfig.agents
- livekit.yaml: revert empty_timeout to default (300s)
- agent.py: system prompt now mandates dispatch_task for all non-trivial
  tasks (not just research); removed inline web_search instructions;
  added tool_call logging in _ReasoningFallbackWrapper

agent/agent.py

@@ -63,15 +63,6 @@ SYSTEM_PROMPT = textwrap.dedent("""\
     - Never write more than three sentences in a row.
     - Never read back URLs, file paths, or technical identifiers.
 
-    # Web access
-    You have web_search and web_scrape tools. Use them when the user asks about
-    current events, recent news, prices, sports scores, or anything
-    that may have changed since your training data. Search first, then scrape
-    a result only if you need more detail. Answer from what you find, in your
-    normal conversational style — don't cite sources formally, just mention the
-    source naturally ("according to..."). If a search comes up empty, say so
-    briefly and move on.
-
     # Weather & Time
     You can check the weather for any location. Use get_weather when the user
     asks about current conditions, temperature, or forecasts. It returns a
@@ -79,6 +70,27 @@ SYSTEM_PROMPT = textwrap.dedent("""\
     Use get_time when the user asks what time or day it is. If they mention
     a city, pass it as the location argument.
 
+    # Background Tasks (dispatch_task) — USE FOR ALL NON-TRIVIAL TASKS
+    For ANY task that is not a simple one-sentence answer from your own
+    knowledge, you MUST call dispatch_task. This includes: looking up news,
+    researching topics, checking current events, prices, sports scores,
+    writing something, summarizing, comparing options, planning, or anything
+    that takes more than a couple seconds to think through. Do NOT use
+    web_search or web_scrape directly; always dispatch instead.
+    The only things you answer inline are: weather (get_weather), time
+    (get_time), memory operations, and trivial facts you already know.
+    Examples:
+    - User says "what's the latest news?" → CALL dispatch_task with
+      description="Find the top 5 international news headlines today"
+    - User says "look up the price of a PS5" → CALL dispatch_task with
+      description="Find the current retail price of a PlayStation 5"
+    - User says "plan a weekend trip to Denver" → CALL dispatch_task with
+      description="Plan a two-day weekend trip to Denver including activities"
+    After calling dispatch_task, tell the user "I'll get on that for you"
+    and keep the conversation going. The result comes back automatically — when
+    you receive it, share the findings naturally in your conversational style.
+    You can have multiple tasks running at once.
+
     # Memory (CRITICAL — always use these tools)
     You MUST call memory_save whenever the user tells you something to remember,
     shares a preference, or says "remember that...". Do NOT just say "okay I'll
@@ -99,13 +111,6 @@ SYSTEM_PROMPT = textwrap.dedent("""\
     use skill_save to record it so you can follow it next time. Be selective: only
     save skills for repeatable tasks, not one-off facts (those go in memory).
 
-    # Background Tasks (dispatch_task)
-    When the user asks you to research something, look up news, or do anything
-    that will take more than a few seconds, CALL dispatch_task with a clear
-    description of what to investigate. Tell the user "I'll take a look at that
-    for you" and keep talking. The result comes back automatically — when you
-    receive it, share the findings naturally. You can have multiple tasks running
-    at once.
 """)
 
 
@@ -165,6 +170,9 @@ class _ReasoningFallbackWrapper:
                 self._last_reasoning = reasoning
             if chunk.has_response():
                 self._has_content = True
+            tc = getattr(delta, "tool_calls", None)
+            if tc:
+                logger.info("LLM tool_call: %s", [t.function.name for t in tc])
         return chunk
 
     async def collect(self):