desktop (beta): DrizzleError "Failed to run the query 'begin'" uncaught exception on every app quit

Summary

Every time the OpenCode Beta desktop app is quit, an "Uncaught Exception" dialog appears with a DrizzleError: Failed to run the query 'begin' from the main process's draft-flush routine. It appears to be a shutdown ordering race: the final drafts flush runs a transaction while/after the SQLite connection is being torn down. No data loss observed; the error is cosmetic but appears on every quit.

Environment

• opencode version: 0.0.0-beta-17927 (OpenCode Beta desktop app)
• OS: macOS 26.0 (Darwin 25.6.0, arm64, Apple M3 Max)
• Terminal: Unavailable (not applicable — Electron desktop app)
• Shell: /bin/zsh
• Install/channel: beta
• Active plugins: one user-global CLI plugin configured (factory-droid-oauth.ts); the failing code path is in the desktop app's own main process (out/main/index.js), not a plugin

Reproduction

1. Launch OpenCode Beta (0.0.0-beta-17927) on macOS.
2. Use it normally for any amount of time.
3. Quit the app (Cmd+Q or closing the window).
4. An "Uncaught Exception" dialog appears.

Reproduces consistently on every quit across multiple launches.

Expected Behavior

The app quits cleanly without an uncaught exception dialog; the final drafts flush either completes before teardown or is skipped/handled during shutdown.

Actual Behavior

On quit, the main process throws:

Uncaught Exception:
DrizzleError: Failed to run the query 'begin'
    at NodeSQLiteSession.run (file:///Applications/OpenCode%20Beta.app/Contents/Resources/app.asar/node_modules/drizzle-orm/sqlite-core/session.js:121:10)
    at NodeSQLiteSession.transaction (file:///Applications/OpenCode%20Beta.app/Contents/Resources/app.asar/node_modules/drizzle-orm/node-sqlite/session.js:29:8)
    at NodeSQLiteDatabase.transaction (file:///Applications/OpenCode%20Beta.app/Contents/Resources/app.asar/node_modules/drizzle-orm/sqlite-core/db.js:343:23)
    at Object.flush (file:///Applications/OpenCode%20Beta.app/Contents/Resources/app.asar/out/main/index.js:4600:6)
    at EventEmitter.flush (file:///Applications/OpenCode%20Beta.app/Contents/Resources/app.asar/out/main/index.js:4643:37)
    at EventEmitter.emit (node:events:521:24)

Additional Context

• The failing database is the app's local drafts store (~/Library/Application Support/ai.opencode.desktop.beta/drafts.sqlite).
• PRAGMA integrity_check / quick_check pass on both drafts.sqlite and the shared service DB (~/.local/share/opencode/opencode.db) — no corruption.
• Only one app instance runs (no SingletonLock conflicts); lsof shows a single writer.
• Deleting drafts.sqlite* while the app is closed did not help; the dialog returns on the next quit.
• The flush is triggered via an EventEmitter (flush handler) that fires during app shutdown, so the transaction races connection teardown.