Remove unused dependencies: qrcode, strum, strum_macros

[dobby-coder]

Problem

Three dependencies are declared in Cargo.toml but are never used anywhere in the crate:

• qrcode = "0.14.1" — Cargo.toml:19
• strum = "0.28.0" — Cargo.toml:24
• strum_macros = "0.28.0" — Cargo.toml:25

A full-tree search finds no references to any of them:

$ grep -rn "qrcode\|QrCode\|strum\|EnumIter\|EnumString" src/ build.rs templates/
(no matches)

They appear only as their own [[package]] entries in Cargo.lock (i.e. pulled in solely as direct dependencies, not transitively required by anything else in the tree).

Why it matters

Unused dependencies add compile time and enlarge the supply-chain surface without providing any value. qrcode in particular pulls in its own subtree. Removing them keeps the dependency set honest.

Fix

Delete the three lines from Cargo.toml and regenerate the lockfile:

• Remove qrcode, strum, and strum_macros from [dependencies].
• Run cargo build so Cargo.lock is updated (the three [[package]] entries, and any now-orphaned transitive entries, should disappear).
• Confirm the CI quality gate still passes locally: cargo fmt --all -- --check, cargo clippy --all-targets -- -D warnings, cargo test --all-targets.

If it turns out any of the three is genuinely required (e.g. a planned QR-code feature), leave that one in place and note it, but the current tree shows no usage.

[dobby-coder]

/dobby fix — remove the unused qrcode, strum, and strum_macros dependencies from Cargo.toml [dependencies], regenerate Cargo.lock with cargo build, and confirm cargo fmt --all -- --check, cargo clippy --all-targets -- -D warnings, and cargo test --all-targets all pass. Open a draft PR that closes this issue and assign @rubenhensen as reviewer.

[dobby-coder]

Hey, I'm on it! I'll remove the unused qrcode, strum, and strum_macros deps from Cargo.toml, regenerate Cargo.lock, and verify cargo fmt, cargo clippy, and cargo test all pass. I'll open a draft PR closing this issue and assign @rubenhensen as reviewer once it's ready.

[dobby-coder]

Parked: this is dobby-initiated work coupled to @rubenhensen, who already has 30 dobby PRs waiting for review (budget: 3). I'm not opening another one until some of those merge or close — comment here to re-trigger dobby once there's room.