Add suite/room/trailer extraction + ID-based class correction

Parser enhancements:
- Add SUITE_PATTERNS: extract Suite, Ste, STE (case-insensitive)
- Add ROOM_PATTERNS: extract Room, RM, Mailroom, Showroom, etc.
- Add TRAILER_PATTERNS: extract Trailer, TRLR, MASH, Safari, etc.
- Add _extract_suite(), _extract_room(), _extract_trailer() functions
- Update _parse_pattern_a() to extract and strip new fields
- Update parse_place() result dict to include suite/room/trailer
- Add correct_class_by_machine_id() post-processing:
  - Bev model in Bev ID range with Snack class → fix to Bev
  - Unknown class in 9x range → set to Bev
  - Unknown class in 6x-7x range → set to Snack
- Update parse_excel() to include new fields and apply correction

DB writer:
- Add suite, room, trailer to ALL_COLUMNS and COLUMN_TYPES
- Add ALTER TABLE migration for existing databases

db_writer.py

@@ -60,7 +60,7 @@ AUTO_FIELDS = {
     "has_cashless",
 }
 
-# All 33 DB columns (Section 11 of the handbook)
+# All 36 DB columns (Section 11 of the handbook + suite/room/trailer)
 # machine_id is the primary key — handled separately
 ALL_COLUMNS = [
     "machine_id",          # preserve — primary key
@@ -73,6 +73,9 @@ ALL_COLUMNS = [
     "company",             # auto
     "place",               # auto
     "building_name",       # auto
+    "suite",               # auto (new)
+    "room",                # auto (new)
+    "trailer",             # auto (new)
     "floor",               # auto
     "zone",                # auto
     "zone_type",           # auto
@@ -111,6 +114,9 @@ COLUMN_TYPES = {
     "company": "TEXT",
     "place": "TEXT",
     "building_name": "TEXT",
+    "suite": "TEXT",
+    "room": "TEXT",
+    "trailer": "TEXT",
     "floor": "INTEGER",
     "zone": "TEXT",
     "zone_type": "TEXT",
@@ -202,7 +208,7 @@ class DatabaseWriter:
         self.conn.row_factory = sqlite3.Row
 
     def create_table(self):
-        """Create the 'assets' table with all columns from Section 11."""
+        """Create the 'assets' table with all columns from Section 11 + suite/room/trailer."""
         columns_defs = []
         for col in ALL_COLUMNS:
             col_type = COLUMN_TYPES.get(col, "TEXT")
@@ -217,6 +223,22 @@ class DatabaseWriter:
             + "\n)"
         )
         self.conn.execute(create_sql)
+        
+        # Migrate existing table: add any missing columns
+        existing_cols = set(
+            r[1] for r in self.conn.execute("PRAGMA table_info(assets)").fetchall()
+        )
+        for col in ALL_COLUMNS + EXTRA_COLUMNS:
+            if col not in existing_cols:
+                col_type = COLUMN_TYPES.get(col, "TEXT")
+                try:
+                    self.conn.execute(
+                        f'ALTER TABLE assets ADD COLUMN "{col}" {col_type}'
+                    )
+                    print(f"  ➕ Added column: {col} ({col_type})")
+                except Exception as e:
+                    print(f"  ⚠️  Could not add column {col}: {e}")
+        
         self.conn.commit()
 
     def _extract_row_values(self, machine):