Add slim caller prompt builder (~400 tokens)

backend/main.py

@@ -6553,6 +6553,30 @@ If Luke asks about the previous caller's situation, give your take briefly, then
 }
 
 
+def get_caller_prompt_slim(caller: dict) -> str:
+    """Slim caller system prompt. Identity carries the weight."""
+    name = caller.get("name", "")
+    identity = caller.get("identity", "")
+    situation = caller.get("situation", "")
+    reason = caller.get("reason_calling", "")
+    want = caller.get("secret_want", "")
+    details = caller.get("specific_details", []) or []
+    detail_str = " | ".join(f"- {d}" for d in details)
+
+    return f"""You are {name}. {identity}
+
+You're calling Luke's late-night radio show because: {situation} — specifically, {reason}.
+
+What you secretly want from this call: {want}
+
+Specific details you'll drop if it feels natural:
+{detail_str}
+
+Speak as this person. React to what Luke says. Stay in character.
+Don't narrate. No stage directions. Just talk.
+Keep responses natural — 1-3 sentences most of the time. Real callers don't monologue."""
+
+
 def get_caller_prompt(caller: dict, show_history: str = "",
                       news_context: str = "", research_context: str = "",
                       emotional_read: str = "",

tests/test_caller_prompt_slim.py

@@ -0,0 +1,23 @@
+from backend.main import get_caller_prompt_slim
+
+
+def test_slim_prompt_includes_identity_and_situation():
+    caller = {
+        "name": "Danny",
+        "identity": "A plumber who inherited a taxidermy shop",
+        "situation": "Getting strange calls about taxidermy",
+        "reason_calling": "Someone left a note",
+        "secret_want": "Permission to throw it all away",
+        "specific_details": ["elk head in basement", "note said she forgot"],
+    }
+    prompt = get_caller_prompt_slim(caller)
+    assert "Danny" in prompt
+    assert "taxidermy shop" in prompt
+    assert "strange calls" in prompt
+    assert "elk head" in prompt
+    assert "she forgot" in prompt
+    assert "Permission to throw it all away" in prompt
+    assert "React to what Luke says" in prompt
+    assert "Stay in character" in prompt
+    # Assert it's under 800 tokens (roughly 3200 chars) — should be ~400 tokens
+    assert len(prompt) < 3200