BAML Workflow Rendering

[aaronvg]

• Add reactflow graph viz for baml workflows, with running states
• Refactor the whole wasm state and decouple all atoms from wasm
• add mock runtime
• Fix issues with LSP sending too many updates (e.g. updated runtime on hover)
• Fix issues with vscode updating cursor position too many times, and for unrelated files
• Create navigation coordinator in sdk to codify 'smart' navigation rules
• Improve performance of baml runtime for large files with caching
• Simplify BamlRuntime Wasm interface by removing many diff ways to run tests to just one.
• Fix many circular dependency issues in playground that prevented vite from hot-reloading

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Note

Adds a ReactFlow-based workflow graph with execution states, unifies selection/navigation via a new SDK that decouples WASM (real/mock runtimes), and streamlines prompt/test rendering with improved performance and tests.

• Graph UI (ReactFlow):
  • Add workflow graph visualization with custom nodes/edges, auto-layout, deadzone camera panning, and execution state styling.
  • Integrate graph into Prompt Preview (new Graph tab) and Testing sidebar; node click syncs selection/detail panel.
• State & Navigation:
  • Introduce unified selection state (function/workflow/test) and bottom-panel mode; remove legacy per-view atoms.
  • Add SDK navigation coordinator with explicit rules; cursor/code/test/sidebar/graph clicks route through a single flow.
• SDK & Runtime:
  • Decouple app state from WASM; add Jotai-backed storage and immutable runtime interface.
  • Implement real BamlRuntime (WASM) and MockBamlRuntime; centralize prompt/cURL rendering and test execution APIs.
  • Handle watch notifications, execution logs, VSCode proxy/settings, and env/feature flags via SDK.
• Prompt/Test UX:
  • Unify Preview/cURL/Graph tabs; adaptive bottom panel (TestPanel vs DetailPanel).
  • Streaming partial responses, parsed result rendering, token counting, and lazy PDF viewer.
• Tooling & Perf:
  • Add vitest config and numerous integration tests (runtime, graph, navigation, watch events).
  • Improve performance with caching and reduced excessive LSP/VSCode updates.

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