feat(agents): configurable LLM model + effort per-agent and per-project (ORCH-41) (#36)

src/projects.py

@@ -17,7 +17,7 @@ registry is used so the system works out of the box.
 
 import json
 import logging
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 
 from .config import settings
 
@@ -30,6 +30,11 @@ class ProjectConfig:
     repo: str               # gitea repo name (== folder under /repos)
     work_item_prefix: str   # ET / ORCH
     name: str               # human-readable label
+    # ORCH-41: optional per-project agent->model / agent->effort overrides parsed
+    # from projects_json. frozen dataclass + mutable default -> field(default_factory=dict)
+    # (a bare {} default raises ValueError). Empty dict = no override (old records work).
+    agent_models: dict = field(default_factory=dict)
+    agent_efforts: dict = field(default_factory=dict)
 
 
 # Built-in default registry (used when ORCH_PROJECTS_JSON is empty/invalid).
@@ -50,6 +55,23 @@ _DEFAULT_PROJECTS = [
 ]
 
 
+def _coerce_str_map(value, idx, field_name) -> dict:
+    """ORCH-41: coerce an optional projects_json sub-object into a {str: str} dict.
+
+    Missing / null -> {} (no override). A non-object value is logged and dropped so
+    one malformed entry can never brick the whole registry; non-string keys/values
+    are stringified for safety.
+    """
+    if value is None:
+        return {}
+    if not isinstance(value, dict):
+        logger.error(
+            f"ORCH_PROJECTS_JSON[{idx}].{field_name} is not an object, ignoring"
+        )
+        return {}
+    return {str(k): str(v) for k, v in value.items()}
+
+
 def _parse_projects_json(raw: str) -> list[ProjectConfig] | None:
     """Parse ORCH_PROJECTS_JSON. Returns None if empty/invalid (-> use default)."""
     if not raw or not raw.strip():
@@ -75,6 +97,8 @@ def _parse_projects_json(raw: str) -> list[ProjectConfig] | None:
                     repo=str(item["repo"]),
                     work_item_prefix=str(item["work_item_prefix"]),
                     name=str(item.get("name", item["repo"])),
+                    agent_models=_coerce_str_map(item.get("agent_models"), i, "agent_models"),
+                    agent_efforts=_coerce_str_map(item.get("agent_efforts"), i, "agent_efforts"),
                 )
             )
         except KeyError as e: