fix(db): add missing journal entries for migrations 0041-0042

The classroom system migration files (0041_classroom-system.sql and
0042_classroom-system-indexes.sql) were created manually without using
drizzle-kit generate, so they weren't registered in _journal.json.

This caused drizzle to skip these migrations, resulting in:
- No parent_child table
- No family_code column on players
- No classrooms/enrollments tables

Fixes production error on /practice page.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps/web/drizzle/meta/_journal.json

@@ -288,6 +288,20 @@
       "when": 1766320890578,
       "tag": "0040_rename_last_help_level_to_last_had_help",
       "breakpoints": true
+    },
+    {
+      "idx": 41,
+      "version": "6",
+      "when": 1766404380000,
+      "tag": "0041_classroom-system",
+      "breakpoints": true
+    },
+    {
+      "idx": 42,
+      "version": "6",
+      "when": 1766406120000,
+      "tag": "0042_classroom-system-indexes",
+      "breakpoints": true
     }
   ]
 }