Fix TUI panel persistent "Waiting for cache data..." message despite valid cache data

[logic3body]

This PR fixes an issue where the TokenCachePanel in the TUI side panel would indefinitely show "Waiting for cache data..." even when session token data (cache reads/writes/costs) is present and confirmed via opencode export and debug toasts.

Root Cause:
OpenCode loads TUI plugins by importing the module's ./tui export at runtime. When that export points to src/index.tsx (raw TSX), OpenCode applies a non-Solid JSX transform. This means JSX expressions like , {data().hitRate}, {t().title}, and Solid reactive bindings (createMemo/createSignal) are never compiled into Solid's reactive DOM primitives. The component renders once with the initial hasData: false state and never updates when dataSignal is set inside createEffect. In contrast, the server-side plugin (dist/index.js) works fine because it is compiled by tsc with standard TypeScript JSX handling.

Fix:

Precompile the TUI entry – Added build.tui.mjs that uses esbuild-plugin-solid with { moduleName: '@opentui/solid', generate: 'universal' } to produce dist/tui.js. The ./tui export now points to this compiled file.

Added Array.isArray guard on api.state.provider – Prevents a TypeError during early render when api.state.provider hasn't been initialised as an array yet (src/index.tsx:469).

Added session.updated event listener – Forces a recomputation when the session aggregate data loads asynchronously (src/index.tsx:667). This is a safety net; the precompilation fix alone was sufficient in testing, but this provides robustness.

Testing:

Installed the plugin via marketplace and npm in a project using the TUI side panel.

Ran an OpenCode session generating token cache activity.

Verified that the panel now shows real-time hit rate, read/write counts, model, cost, etc., instead of the waiting message.

[Hotakus]

Thank you for the fix! Because your PR modifies the build process, I needed to verify the release workflow. I’ve gone ahead and released your PR as a beta version. Once we confirm it’s working properly, I’ll merge it and ship it in the main release.

Could you please test the beta version? Remove the old cache by running rm -rf ~/.cache/opencode/packages/opencode-visual-cache@latest, then install and test the beta using the package name opencode-visual-cache@beta.