diff --git a/server/data/systems.db b/server/data/systems.db
index e3ac9f8c3..814a530a9 100644
Binary files a/server/data/systems.db and b/server/data/systems.db differ
diff --git a/tooling/economy-db/import_economics.py b/tooling/economy-db/import_economics.py
index 2d9ed3979..0c6439514 100755
--- a/tooling/economy-db/import_economics.py
+++ b/tooling/economy-db/import_economics.py
@@ -2082,12 +2082,10 @@ def populate_trait_templates(conn: sqlite3.Connection, dry_run: bool) -> int:
     (the table still exists for the downstream pipeline). Deterministic rebuild:
     clears trait_templates (cascading atlas_body_trait_bias) first.
     """
-    if dry_run:
-        # Still surface row count that WOULD be baked.
-        pass
-    conn.execute("DELETE FROM atlas_body_trait_bias")
-    conn.execute("DELETE FROM trait_templates")
     if not ARCHITECTURE_TRAIT_CATALOG_TOML.exists():
+        if not dry_run:
+            conn.execute("DELETE FROM atlas_body_trait_bias")
+            conn.execute("DELETE FROM trait_templates")
         return 0
     with open(ARCHITECTURE_TRAIT_CATALOG_TOML, "rb") as f:
         data = tomllib.load(f)
@@ -2153,15 +2151,19 @@ def populate_trait_templates(conn: sqlite3.Connection, dry_run: bool) -> int:
             for e in gerrors:
                 print(f"    - {e}")
             raise _ImportAborted()
-    conn.executemany(
-        """INSERT INTO trait_templates
-           (tag, label, cultural_description, corridor_pool, geographic_sector,
-            bulk_class_gate, production_ubiquity_gate, min_prosperity_bps,
-            base_weight, weight_mods, zone_affinity, allow_tags, block_tags,
-            era_scope, visual_bundle)
-           VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)""",
-        rows,
-    )
+    # Validation/guardrails run on dry-run too; only mutate when committing.
+    if not dry_run:
+        conn.execute("DELETE FROM atlas_body_trait_bias")
+        conn.execute("DELETE FROM trait_templates")
+        conn.executemany(
+            """INSERT INTO trait_templates
+               (tag, label, cultural_description, corridor_pool, geographic_sector,
+                bulk_class_gate, production_ubiquity_gate, min_prosperity_bps,
+                base_weight, weight_mods, zone_affinity, allow_tags, block_tags,
+                era_scope, visual_bundle)
+               VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)""",
+            rows,
+        )
     return len(rows)
 
 
@@ -2175,8 +2177,9 @@ def populate_atlas_body_trait_bias(conn: sqlite3.Connection, dry_run: bool) -> i
     multiplier). Hero-pin *content* is authored in #1017. Absent source -> 0
     rows. Must run AFTER populate_trait_templates.
     """
-    conn.execute("DELETE FROM atlas_body_trait_bias")
     if not ARCHITECTURE_TRAIT_BIAS_TOML.exists():
+        if not dry_run:
+            conn.execute("DELETE FROM atlas_body_trait_bias")
         return 0
     with open(ARCHITECTURE_TRAIT_BIAS_TOML, "rb") as f:
         data = tomllib.load(f)
@@ -2205,18 +2208,22 @@ def populate_atlas_body_trait_bias(conn: sqlite3.Connection, dry_run: bool) -> i
             errors.append(f"{loc}: boost weight_multiplier_bps must be 10001..30000 (<=3x), got {mult}")
         if kind == "suppress" and not (mult and 3300 <= mult <= 9999):
             errors.append(f"{loc}: suppress weight_multiplier_bps must be 3300..9999 (>=0.33x, never 0), got {mult}")
+        if kind == "pin" and mult is not None:
+            errors.append(f"{loc}: pin is mandatory and must not carry weight_multiplier_bps (got {mult})")
         rows.append((bid, tag, kind, mult, b.get("note")))
     if errors:
         print(f"  TRAIT BIAS ERRORS ({len(errors)}):")
         for e in errors:
             print(f"    - {e}")
         raise _ImportAborted()
-    conn.executemany(
-        """INSERT INTO atlas_body_trait_bias
-           (body_id, template_tag, bias_kind, weight_multiplier_bps, note)
-           VALUES (?,?,?,?,?)""",
-        rows,
-    )
+    if not dry_run:
+        conn.execute("DELETE FROM atlas_body_trait_bias")
+        conn.executemany(
+            """INSERT INTO atlas_body_trait_bias
+               (body_id, template_tag, bias_kind, weight_multiplier_bps, note)
+               VALUES (?,?,?,?,?)""",
+            rows,
+        )
     return len(rows)