fix: point at the kotlin extension's first-run setup instead of a reload failure

[Sam Gammon (sgammon)]

What

The extension now detects when JetBrains' Kotlin extension is waiting on its first-run setup and says so. Previously every sync reported "Kotlin LSP did not reload".

Why

JetBrains.kotlin-server (0.0.13) activates normally but holds its language server back until a region and a data-sharing choice are recorded and its terms are accepted. Until then it never calls activateExtension, so jetbrains.kotlin.reloadWorkspace and jetbrains.kotlin.restartLsp are never registered. reloadKotlinLsp treated the missing commands as a reload failure. The Kotlin extension's own gate (from its bundled sources, consent.ts and eula.ts) reads the user values of intellij.region and intellij.dataSharing, where not_set (the default) means unanswered.

How

• @elide/ide-core: unansweredKotlinSetupSteps and kotlinSetupPendingMessage (kotlinSetup.ts), with unit tests.
• jetbrains.ts: pendingKotlinSetup() reports the setup as pending when either:
  • intellij.region or intellij.dataSharing is unanswered, or
  • the extension is active, its setup command jetbrains.showLicenseSetup is registered, and none of its server commands are. This covers the terms, which live in its private state.
• While setup is pending, reloadKotlinLsp throws KotlinSetupPendingError instead of the generic error.
• Each sync logs the state. A warning with an "Open Kotlin Setup" button appears once per window; the button runs jetbrains.showLicenseSetup, or opens the two settings if that command is missing. The language server imports workspace.json itself when it starts after setup, so nothing else is needed.
• "Debug with Elide" with the intellij adapter shows the same warning instead of starting an Elide process for a debugger that is not running.

Verified

• bun run build, bun run --filter elide typecheck, bun run test (144 pass).
• VS Code 1.141.0 under Xvfb with the real JetBrains.kotlin-server 0.0.13, Elide 1.6.0-rc.2 and a fresh profile without intellij.region / intellij.dataSharing:
  • After the startup sync, the output shows Kotlin LSP not started: the Kotlin extension is waiting for its first-run setup (region, data sharing); … and one warning with "Open Kotlin Setup" appears, next to the Kotlin extension's own "initial setup is incomplete" notice.
  • A second elide.sync logs the same line and shows no second warning.
  • Debug with Elide shows the warning and starts nothing.
• With both settings answered, the existing path is unchanged: reload runs through jetbrains.kotlin.reloadWorkspace.

Closes #16