sqlite again (#10597)

Co-authored-by: Github Action <action@github.com>
Co-authored-by: opencode-agent[bot] <opencode-agent[bot]@users.noreply.github.com>
Co-authored-by: Brendan Allan <git@brendonovich.dev>

packages/opencode/AGENTS.md

@@ -1,27 +1,10 @@
-# opencode agent guidelines
+# opencode database guide
 
-## Build/Test Commands
+## Database
 
-- **Install**: `bun install`
-- **Run**: `bun run --conditions=browser ./src/index.ts`
-- **Typecheck**: `bun run typecheck` (npm run typecheck)
-- **Test**: `bun test` (runs all tests)
-- **Single test**: `bun test test/tool/tool.test.ts` (specific test file)
-
-## Code Style
-
-- **Runtime**: Bun with TypeScript ESM modules
-- **Imports**: Use relative imports for local modules, named imports preferred
-- **Types**: Zod schemas for validation, TypeScript interfaces for structure
-- **Naming**: camelCase for variables/functions, PascalCase for classes/namespaces
-- **Error handling**: Use Result patterns, avoid throwing exceptions in tools
-- **File structure**: Namespace-based organization (e.g., `Tool.define()`, `Session.create()`)
-
-## Architecture
-
-- **Tools**: Implement `Tool.Info` interface with `execute()` method
-- **Context**: Pass `sessionID` in tool context, use `App.provide()` for DI
-- **Validation**: All inputs validated with Zod schemas
-- **Logging**: Use `Log.create({ service: "name" })` pattern
-- **Storage**: Use `Storage` namespace for persistence
-- **API Client**: The TypeScript TUI (built with SolidJS + OpenTUI) communicates with the OpenCode server using `@opencode-ai/sdk`. When adding/modifying server endpoints in `packages/opencode/src/server/server.ts`, run `./script/generate.ts` to regenerate the SDK and related files.
+- **Schema**: Drizzle schema lives in `src/**/*.sql.ts`.
+- **Naming**: tables and columns use snake*case; join columns are `<entity>_id`; indexes are `<table>*<column>\_idx`.
+- **Migrations**: generated by Drizzle Kit using `drizzle.config.ts` (schema: `./src/**/*.sql.ts`, output: `./migration`).
+- **Command**: `bun run db generate --name <slug>`.
+- **Output**: creates `migration/<timestamp>_<slug>/migration.sql` and `snapshot.json`.
+- **Tests**: migration tests should read the per-folder layout (no `_journal.json`).