chore: add catalog.db to .gitignore and set up Git LFS for binaries

[gitcoder89431]

Problem

Two large binary files are currently committed directly to the repository:

• catalog.db — 3.4MB SQLite database
• demo.gif — 8.1MB animated GIF

Binary blobs in git history are permanent and grow clone size for everyone. They also produce noise in diffs.

Proposed Change

Short term — add to .gitignore (catalog.db)

catalog.db is a runtime artifact that gets bootstrapped on the user's machine. It shouldn't be in source control. Add to .gitignore:

catalog.db
*.db

Ship catalog.db as a GitHub Release asset instead, downloaded by the install script.

Medium term — Git LFS for demo.gif

Once LFS is configured, track large media:

git lfs install
git lfs track "*.gif"
git add .gitattributes

Then re-add demo.gif through LFS.

CI

Update .goreleaser.yaml to attach catalog.db as a release artifact automatically.

Files

.gitignore, .gitattributes (new), .goreleaser.yaml