Add ubrn build web --and-generate command

[jhugman]

This adds extra functionality to the ubrn build web command; the following is done automatically:

• Builds the crate for the current architecture, with the set of features taken from the config file.
• Generates the wasm bindings crate, with the correct set of features enabled.
• Generates the typescript bindings
• Runs cargo build --target wasm32-unknown-unknown, with the correct profile, taken from the command line.
• Runs wasm-bindgen on the resulting wasm bundle.

More command line options are added:

• --no-generate: opts out of all except the initial cargo build.
• --no-wasm-pack: opts out of the build for the wasm32-unknown-unknown and wasm-bindgen, which does the same as wasm-pack build.
• --target: changes the target passed to wasm-bindgen

Extras added to the config file:

web:
  wasmCrateName`: # defaults to the name taken from `package.json`
  manifestPath: # defaults to `rust_modules/wasm/Cargo.toml`
  workspace: # defaults to false. If false, then assume a workspace `Cargo.toml` is not present.
  features: # defaults to []. The list of features used to build the target crate.
  targets: # list of wasm target triples. Defaults to ["wasm32-unknown-unknown"]
  cargoExtras: # passed to the wasm32 `cargo build`
  target: # default to "web", passed to `wasm-bindgen`

Tests are missing at the moment, awaiting a better way of doing integration testing.

[Copilot]

Pull Request Overview

This PR adds the “ubrn build web --and-generate” command to build the wasm target and generate the corresponding template files and bindings. Key changes include the introduction of new wasm template files (index.web.ts and Cargo.toml), new wasm-related modules (commands, config, bindings) and updates to the build command infrastructure to support the web build.

Reviewed Changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
crates/ubrn_cli/templates/wasm/index.web.ts	New template file for the wasm entry point using templating loops.
crates/ubrn_cli/templates/wasm/Cargo.toml	New Cargo.toml template for the wasm crate with dynamic features.
crates/ubrn_cli/src/wasm/*	New modules for wasm configuration, commands, and bindings integration.
crates/ubrn_cli/src/jsi/*	Renaming of iOS and Android command structures to improve clarity.
crates/ubrn_cli/src/commands/building.rs	Extended build command support to include a new “Web” variant with a then_build hook.
crates/ubrn_cli/src/commands/generate.rs	Added conditional generation logic for WASM vs. JSI bindings.
crates/ubrn_cli/src/config/*	Added new fields (e.g. project_version) and validation hooks for manifest paths.
crates/ubrn_bindgen/src/bindings/gen_rust/mod.rs	Minor adjustments in code generation for callback modules.

Comments suppressed due to low confidence (1)

crates/ubrn_cli/src/commands/building.rs:56

• The new Web build command and its then_build logic should have accompanying tests or integration examples to verify functionality, particularly given the uncertainty expressed in the PR description regarding testing with create-react-native-library and yarn create expo-app.

self.cmd.then_build()

[Copilot]

Pull Request Overview

This PR adds the new "ubrn build web --and-generate" command functionality for building and generating WebAssembly bindings and TypeScript files. Key changes include updates to wasm build configuration and commands, renaming of platform-specific build arguments for consistency, and modifications in code generation and binding routines.

Reviewed Changes

Copilot reviewed 23 out of 23 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
crates/ubrn_cli/templates/wasm/Cargo.toml	Adds a templated Cargo.toml for the wasm crate with conditional blocks.
crates/ubrn_cli/templates/jsi/crossplatform/index.tsx	Introduces a no-op async initialization function for parity with web.
crates/ubrn_cli/src/wasm/*	Adds new modules (bindings, commands, config) and exports WASM config.
crates/ubrn_cli/src/jsi/*	Renames iOS and Android build argument structs for consistency.
crates/ubrn_cli/src/config/*	Updates configuration parsing for manifest paths and project version.
crates/ubrn_cli/src/commands/*	Introduces WebBuildArgs and updates build command logic accordingly.
crates/ubrn-bindgen/src/bindings/gen_rust/mod.rs	Adjusts identifier naming inside generated Rust binding code.

Comments suppressed due to low confidence (2)

crates/ubrn_bindgen/src/bindings/gen_rust/mod.rs:360

• [nitpick] The alternate identifier '_rs_return' is used when no return type is present. Consider adding an inline comment to clarify the rationale for choosing different identifiers in these cases to improve maintainability.

let rs_ret_name = if rt.is_some() { "rs_return_" } else { "_rs_return" };

crates/ubrn_cli/src/config/rust_crate.rs:79

• [nitpick] The custom deserialization for manifest_path checks that the string ends with 'Cargo.toml'. It may be beneficial to enhance the validation (or error message) by clarifying if the path should be relative or conform to additional expected patterns.

if !path_str.ends_with("Cargo.toml") {

[zzorba]

does this code need wasm cfg/clap stuff as well, won't it be undefined if the wasm feature is missing?

[jhugman]

Yes, you're right. I wonder why clippy didn't spot this.

[zzorba]

LGTM, couple possible nits