refactor: remove legacy tools format, use permission only

BREAKING: Requires OpenCode 1.1.1+

- Remove supportsNewPermissionSystem/usesLegacyToolsSystem checks
- Simplify permission-compat.ts to permission format only
- Unify explore/librarian deny lists: write, edit, task, sisyphus_task, call_omo_agent
- Add sisyphus_task to oracle deny list
- Update agent-tool-restrictions.ts with correct per-agent restrictions
- Clean config-handler.ts conditional version checks
- Update tests for simplified API

src/tools/lsp/index.ts

@@ -4,4 +4,4 @@ export * from "./config"
 export * from "./client"
 export * from "./utils"
 // NOTE: lsp_servers removed - duplicates OpenCode's built-in LspServers
-export { lsp_diagnostics, lsp_prepare_rename, lsp_rename } from "./tools"
+export { lsp_goto_definition, lsp_find_references, lsp_symbols, lsp_diagnostics, lsp_prepare_rename, lsp_rename } from "./tools"