Fix session resume and PSD container configuration

harness/tht/cli/config_cmd.py

@@ -1,3 +1,4 @@
+import os
 from pathlib import Path
 
 import typer
@@ -7,7 +8,10 @@ from tht.config import ConfigError, load_config
 config_app = typer.Typer(help="Gestione configurazione")
 
 CONFIG_OPT = typer.Option(
-    Path("config/tht.yaml"), "--config", "-c", help="Percorso del file di configurazione."
+    Path(os.environ.get("THT_CONFIG", "config/tht.yaml")),
+    "--config",
+    "-c",
+    help="Percorso del file di configurazione.",
 )
 
 

harness/tht/phase.py

@@ -183,6 +183,28 @@ def advance_problems(source: Path | SessionSnapshot, phase: int) -> list[str]:
     l'evaluator generico (F2 pieno) entra in un secondo momento.
     """
     problems: list[str] = []
+    if phase == 4:
+        raw = _artifact(source, "schema_linking", "schema_linking.json")
+        if raw is None:
+            problems.append("schema_linking.json assente (Fase 4)")
+        else:
+            try:
+                linking = SchemaLinking.model_validate(json.loads(raw))
+            except (json.JSONDecodeError, ValidationError) as e:
+                problems.append(f"schema_linking.json non valido (Fase 4): {e}")
+            else:
+                promoted_tables = {
+                    candidate.name
+                    for candidate in linking.candidates
+                    if candidate.kind == "table" and candidate.decision == "promoted"
+                }
+                if len(promoted_tables) > 1 and (
+                    not linking.joins or not _has_decision(source, "join_modified")
+                ):
+                    problems.append(
+                        "Fase 4: più tabelle promosse richiedono join strutturati in "
+                        "schema_linking.json e una decisione join_modified del reviewer"
+                    )
     if phase == 3 and not _has_decision(source, "question_rewritten"):
         problems.append("manca la decisione question_rewritten (Fase 3)")
     if phase == 5: