v1.2.0

• feat(verilog): bundle Icarus Verilog 13.0 for Linux x64 and ARM64, built and verified on Ubuntu 22.04 with no separate Icarus installation required
• perf(packaging): include only the matching platform's Icarus runtime in each Windows, macOS, and Linux VSIX while preserving its licenses and corresponding-source information
• fix(lsp): preserve pending on-save compiler diagnostics when unrelated VS Code settings change
• test(ci): verify the final VSIX on five native platforms, including real VS Code activation, LSP diagnostics, simulation commands, and a fixed P4 Worker trace comparison; reuse these checks before publishing