Update tickets

tickets/029-remove-unused-deps.md

@@ -0,0 +1,29 @@
+# 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](028-fs-embed-static-bundling.md) 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.