[ElsonOtake]

Seeded members now receive avatars from app/assets/images, matched by the email prefix. Login also recovers when a browser session references a deleted visitor, preventing a 404 after a database reset.

• Attach matching .jpg, .jpeg, or .png avatars before saving seeded members.
• Replace missing visitor records and refresh the session’s visitor ID.
• Install and build CSS during setup.
• Start Rails, the CSS watcher, and Sidekiq through bin/dev.
• Document development dependencies and startup steps.

Validation:

• All 3 visitor-session regression tests pass.
• RuboCop passes for the controller and tests.
• Ruby syntax checks and CSS build pass.
• Matching avatar files and size limits verified for all 11 seeded members.