ottyl/tickets/029-remove-unused-deps.md

029 — Remove unused crates and dependencies

Summary

Audit Cargo.toml and webapp/package.json for dependencies that are declared but not actually used, and remove them.

Scope

• Check each [dependencies]/[dev-dependencies] entry in Cargo.toml against actual usage (e.g. cargo +nightly udeps, or grepping for each crate's root module name), same for webapp/package.json (e.g. npx depcheck).
• Remove anything unused. If a dependency was added ahead of a specific ticket that hasn't landed yet (e.g. fs-embed before 028 wires it in), leave it — this ticket is about dead weight, not blocking in-flight work.
• Re-run the full test suite and a production webapp build after pruning to confirm nothing silently depended on a "removed" package.

Acceptance criteria

• No dependency remains in either manifest without a corresponding usage in the codebase.
• cargo test and the webapp build both pass after pruning.

Depends on

None.