Add detailed partition progress logging

Log shows:
- Current partition index and total ([X/Y])
- Partition name being processed
- Number of groups consolidated per partition after completion

This helps track migration progress when processing 18 partitions,
making it easier to identify slow partitions or issues.

🤖 Generated with Claude Code

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

.env.example

@@ -16,6 +16,7 @@ POSTGRES_DATABASE=migrated_db
 BATCH_SIZE=10000
 LOG_LEVEL=INFO
 DRY_RUN=false
+CONSOLIDATION_GROUP_LIMIT=50000
 
 # Performance Testing
 BENCHMARK_OUTPUT_DIR=benchmark_results

src/migrator/full_migration.py

@@ -105,8 +105,9 @@ class FullMigrator:
                         partitions = mysql_conn.get_table_partitions(mysql_table)
                         logger.info(f"Found {len(partitions)} partitions for {mysql_table}")
 
-                        for partition in partitions:
-                            logger.info(f"Processing partition {partition}...")
+                        for partition_idx, partition in enumerate(partitions, 1):
+                            logger.info(f"[{partition_idx}/{len(partitions)}] Processing partition {partition}...")
+                            partition_group_count = 0
 
                             # Fetch consolidation groups from partition
                             # Each group is a list of rows with the same (unit, tool, date, time)
@@ -129,6 +130,7 @@ class FullMigrator:
                                 if inserted > 0:
                                     migrated += inserted
                                     batch_count += 1
+                                    partition_group_count += 1
                                     progress.update(len(group_rows))
 
                                     # Update state every 10 consolidations to track progress
@@ -137,6 +139,8 @@ class FullMigrator:
                                             pg_conn, migrated, None, migration_start_time
                                         )
 
+                            logger.info(f"Partition {partition} complete: {partition_group_count} groups consolidated")
+
                     # Get final actual count from PostgreSQL
                     final_count = pg_conn.get_row_count(pg_table)
                     logger.info(f"Final count from PostgreSQL: {final_count}")