feat: add tari lint command

[sdbondi]

Adds tari lint (aliases lints, check) — checks a template crate for issues that hurt the published WASM binary or the developer experience. Every check except the Rust lints prints the exact fix, and most can be applied with --fix.

Checks

Code	Severity	What
rust::clippy	error / warning	Runs cargo clippy --target wasm32-unknown-unknown, renders its diagnostics inline
cargo::crate-type	error / warning	[lib] crate-type must be exactly ["cdylib"]; missing or non-cdylib is an error, extras like rlib a warning (each extra type is compiled and linked in)
cargo::release-profile	warning	opt-level/lto/codegen-units/panic/strip, listing only the keys actually missing
cargo::test-runtime-profile	suggestion	Dev opt-level for the six wasmer/cranelift crates, without which template tests run ~10x slower. Only checked when the crate has tests
template::metadata	warning / suggestion	description + [package.metadata.tari-template] fields, suggesting the exact tari template init -y --… invocation
template::metadata-build	warning	tari_ootle_template_build build-dep and a build.rs calling TemplateMetadataBuilder

--fix

Applies everything that does not need the author's input: clippy's machine-applicable suggestions (cargo clippy --fix --allow-dirty), both profile sections, crate-type, and init_metadata::auto_init for the build script. template::metadata is deliberately not auto-fixable — only the author knows the values — and a build.rs that exists but does something unrelated is never rewritten.

Cargo only honours [profile.*] in the workspace root manifest, so profile checks read (and --fix writes) that manifest when the template is a workspace member.

Other flags

--no-clippy to check manifests only, -D/--deny-warnings to fail on warnings too, and exit 1 on any error — suitable for CI. Missing toolchain pieces (clippy component, wasm32 target) are reported as findings carrying the rustup command to run, rather than as a crash.

Example

⚠️ warning[cargo::crate-type]: `crate-type` also contains `rlib` — every extra crate type is
   compiled and linked in, bloating the published binary
   --> Cargo.toml [lib]
   help:
       In Cargo.toml, keep only the dynamic library:

       [lib]
       crate-type = ["cdylib"]
   (fixable with `tari lint --fix`)

Summary: 0 error(s), 1 warning(s), 0 suggestion(s)
Run `tari lint --fix` to apply the fixes marked above.

Testing

26 unit tests added — every fix applier is round-tripped through its own check, so --fix provably satisfies the lint it claims to fix. cargo test -p tari-ootle-cli: 44 passed. Clippy and fmt clean. Manually exercised against a scratch template crate for the report, --fix, and toolchain-failure paths.

Docs: new ## lint section in docs/03-reference/cli-commands.md.

🤖 Generated with Claude Code