Fix/lesson 25 ci toby evans

[tobyev]

I made updates to my Lesson 25 homework by adding a SQL queries file (lesson25_toby_evans.sql) with the three required queries, creating a library_users table with seeded users, implementing LibraryUserModel and LibraryUserRepository, and wiring users into the LibraryDataModel via LibraryDbDataLoader .

I also corrected the "total pages checked out" query to join checked_out_items with media_items . My changes were staged, committed, pushed, and are ready for review on feat/lesson-25-hw-toby-evans (with follow-up fixes on fix/lesson-25-ci-toby-evans).

Problem area (s):
• Running Gradle from the wrong project path for Lesson 25
• SQLite "unable to open database file" from pointing at the wrong DB location
• Initial pages sum query missing a join to media_items
• sed insertion not matching return dataModel; in LibraryDbDataLoader

Lessons learned:
• Double-check module paths before running builds (lesson_25/db vs repo root)
• Verify the actual DB file and schema with SQLite before querying
• Use the correct JOINS for aggregate queries that reference fields in other tables
• Make small, testable commits and re-run checks after each change