Add promotion gate for tier-2 regulars

backend/services/regulars_v2.py

@@ -1,7 +1,13 @@
 from dataclasses import dataclass
 from pathlib import Path
+import json
 import re
 
+import httpx
+
+from ..config import settings
+from .cost_tracker import cost_tracker
+
 HOME = Path.home()
 VAULT = HOME / "code" / "dotfiles"
 SILAS_DIR = VAULT / "silas"
@@ -49,3 +55,47 @@ def load_all_active_regulars() -> list[Regular]:
         for f in REGULARS_DIR.glob("*.md"):
             out.append(load_regular(f))
     return out
+
+
+PROMOTION_MODEL = "anthropic/claude-sonnet-4.6"
+
+PROMOTION_PROMPT = """You are evaluating whether a one-time caller should become a recurring character.
+
+CALLER: {name}
+TRANSCRIPT:
+{transcript}
+
+A recurring character must have a 3-5 episode arc with genuine progression — not just "calls weekly to complain about the same thing." The arc must have a possible resolution.
+
+Output JSON:
+{{"promote": true|false, "arc_plan": "...", "reason": "..."}}
+
+Bar is HIGH. Only promote if the character has real internal conflict, growth potential, and a believable resolution trajectory."""
+
+
+async def _call_sonnet(prompt: str) -> dict:
+    async with httpx.AsyncClient(timeout=60.0) as client:
+        resp = await client.post(
+            "https://openrouter.ai/api/v1/chat/completions",
+            headers={"Authorization": f"Bearer {settings.openrouter_api_key}"},
+            json={
+                "model": PROMOTION_MODEL,
+                "messages": [{"role": "user", "content": prompt}],
+                "response_format": {"type": "json_object"},
+                "max_tokens": 500,
+            },
+        )
+        resp.raise_for_status()
+        data = resp.json()
+    usage = data.get("usage", {})
+    cost_tracker.record_llm_call(
+        category="promotion_eval",
+        model=PROMOTION_MODEL,
+        usage_data=usage,
+    )
+    return json.loads(data["choices"][0]["message"]["content"])
+
+
+async def evaluate_promotion(caller_name: str, call_transcript: str) -> dict:
+    prompt = PROMOTION_PROMPT.format(name=caller_name, transcript=call_transcript)
+    return await _call_sonnet(prompt)