beta-0.2.0

What's new

Runtime & stability

• Hardened JS-runtime teardown: join the JS thread before member destruction, degrade
  bridge-function resolution instead of crashing, make sync bridge calls non-raising on
  JS throw, and drop one-way void calls to expired proxies.
• Memory-safety fixes: refuse to resurrect a SharedPtrRefCountable from a raw pointer,
  retain-before-release with atomic swap on object-field writes, treat a null WeakRef
  deref as a collected proxy.
• Fixed a marshalling amplification bug where untyped JS→native conversion converted every
  property twice (2^depth), causing std::bad_alloc.
• Stop holding the ResourceManager mutex across resource loads; settle promises on cancel;
  add a cooperative termination mode that drains teardown instead of aborting.
• Fail deadline-bounded sync JS calls fast while the JS thread is stalled.
• Security: bounds-check UTF-8/UTF-16 decode look-ahead.

Rendering, text & layout

• Linear and radial gradients for shape fills; hierarchical color palettes and theme-aware
  assets.
• Transform origins and CSS-style composed transforms.
• Renderer memoization and reconciliation fixes.
• iOS text measurement fixes: include font leading, restore one-line-tall empty inputs,
  notify TypeScript of window-size changes.
• Skip TextView shadow layers on Android 6 to avoid the RenderScript blur SIGSEGV.
• Added Device.getDynamicTypeScale and a transform-API snapshot suite.
• Isolate web PersistentStoreNative memory by store name.

Compiler & bindings

• Native API versioning and compatibility guards.
• Native JavaScript class bindings and optimized utilities.
• Fixed generated type headers self-importing, which broke clang-module / Swift interop.
• New golden-diff harnesses (compiler emit + platform bindings) and a prebuilt compiler bump.

Networking & workers

• HTTP request manager for CLI apps; Android and native-client request cancelation.
• MessageChannel support and aggressive worker termination.

Debugger & DevTools

• Browser-based Valdi debugger and cross-platform DevTools capabilities.

CLI & tooling

• Bootstrap validates the project name as a Bazel module name.
• Fixed inspect command packaging; added a CLI postbuild step.
• Hand the Android back button back to the platform.
• Flush stdout writes in ConsoleLogger::writeDirect.

Build system & CI

• Linux support: upgraded LLVM 16 → 19.1.7 so //valdi:test runs on Linux, with a hermetic
  NDK and a green Linux build.
• Added an AddressSanitizer CI job; unified open-source CI across internal and external with
  a parity checker.
• Dependency bumps: rules_kotlin 2.3.10, rules_python 1.9.0, and RBE iOS crosscompilation.
• resvg now builds from source; the prebuilt resvg_libs archive is no longer shipped.

Performance

• Cache native number-formatting instances, parallelize ValdiProcessImages asset
  conversion, drain parked view transactions before external-surface rasters.

Community contributions

Thanks to everyone who contributed through the public repo this release (PRs imported via
Copybara, verified in the beta-0.1.1...beta-0.2.0 range):

• @scorsin-oai — #107, #121, #122, #123, #124, #125, #126, #127
• @tx3stn — #117, #142, #179, #183
• @ecoreng — #144, #145
• @ultramiraculous — #114
• @scott-thornton — #150
• @bjdodson-openai — #154, #180

Upgrading

• Bootstrap CLI @snap/valdi 1.2.0 defaults new projects to beta-0.2.0 for both Valdi
  and Valdi_Widgets. Existing projects: bump VALDI_TAG / WIDGETS_TAG in MODULE.bazel
  and the --registry in .bazelrc to beta-0.2.0.

Known issues

• Android TextField autofit was reverted this cycle to fix a disappearing-prompt regression;
  PR #107 (text rendering improvements) is only partially present as a result.