feat: macro series

backend/services/database.py

@@ -715,6 +715,29 @@ def init_db():
     except Exception:
         pass  # Column already exists
 
+    # ── Macro Series Log ───────────────────────────────────────────────────────
+    # One row per change: actual or forecast changed vs previous snapshot.
+    # Allows tracking forecast revisions over time + actual vs consensus history.
+    c.execute("""CREATE TABLE IF NOT EXISTS macro_series_log (
+        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        series_id   TEXT NOT NULL,
+        event_name  TEXT NOT NULL DEFAULT '',
+        event_date  TEXT NOT NULL,
+        actual_value    REAL,
+        forecast_value  REAL,
+        previous_value  REAL,
+        currency    TEXT DEFAULT '',
+        impact      TEXT DEFAULT '',
+        logged_at   TEXT NOT NULL DEFAULT (datetime('now')),
+        source      TEXT DEFAULT 'calendar_sync',
+        changed     TEXT DEFAULT 'new'
+    )""")
+    try:
+        c.execute("CREATE INDEX IF NOT EXISTS idx_msl_series ON macro_series_log(series_id, event_date)")
+        c.execute("CREATE INDEX IF NOT EXISTS idx_msl_logged ON macro_series_log(logged_at DESC)")
+    except Exception:
+        pass
+
     # ── Specialist Desks ───────────────────────────────────────────────────────
     c.execute("""CREATE TABLE IF NOT EXISTS specialist_reports (
         id TEXT PRIMARY KEY,