feat(build): compile WASM templates with size-optimizing cargo profile

[sdbondi]

Summary

Compile WASM templates with size-optimizing release profile settings, injected on the cargo build command line via --config so a template doesn't need to declare them in its own Cargo.toml. Because --config takes precedence over the manifest, the overrides apply even when a template defines its own [profile.release]:

opt-level = 's'      # Optimize for size
lto = true           # Link Time Optimization
codegen-units = 1    # More optimization
panic = 'abort'      # Abort on panic
strip = true         # Strip symbols

These are on by default. Pass --no-cargo-opts to tari build / tari publish (and tari template publish) to skip them and build with the template's plain release profile.

Changes

• build_project / build_template take an optimize flag; the overrides live in a CARGO_OPT_CONFIGS const and are only added when enabled.
• --no-cargo-opts added to tari build, tari publish, and tari template publish.
• Internal "metadata stale → rebuild" paths (inspect, metadata publish) use the default opts so the cargo build cache stays consistent with a normal build.

Dependency fix

Pins curve25519-dalek to =5.0.0-pre.6. 5.0.0-rc.1 switched to the upstream ff 0.14 crate, which breaks tari_bulletproofs_plus 0.5.0 (Scalar no longer exposes pow_vartime). Follows the repo's existing hickory-proto pinning idiom (direct dep + cargo-machete ignore). See tari-project/bulletproofs-plus#148.

Testing

• cargo check -p tari-ootle-cli --locked compiles the whole workspace clean.
• Verified empirically that cargo build --config "profile.release.opt-level='s'" overrides a manifest's own [profile.release], and that all five --config flags are accepted together.

🤖 Generated with Claude Code

[gemini-code-assist]

Code Review

This pull request introduces size-optimizing release profile overrides (such as opt-level='s', lto=true, codegen-units=1, panic='abort', and strip=true) to the WASM template build process via cargo build --config. It adds a --no-cargo-opts CLI flag to the build, publish, and template publish commands to allow skipping these optimizations. Additionally, it pins the curve25519-dalek dependency to version =5.0.0-pre.6 to prevent compatibility issues with tari_bulletproofs_plus, and bumps the workspace package version to 0.20.1. There are no review comments, so I have no feedback to provide.

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