Add 'PROACTIVE' to DEFAULT_BUILD_FEATURES in scripts/defines.ts.
The proactive state machine (src/proactive/index.ts) and SleepTool
were already fully recovered; only the glue function
notifyAutomationStateChanged was missing — restored in d1d74d4a.
With PROACTIVE enabled, the autonomous agent can use SleepTool to
pause/resume its own tick cycle, saving tokens during idle periods.
- Add Vite as alternative build (vite.config.ts, scripts/vite-plugin-*)
- Add dab04af7 RSS fix (distRoot, ripgrep path, post-build)
- Pull in packages/builtin-tools/ (+354 files)
- Pull in packages/agent-tools/, mcp-client/, acp-link/, weixin/
- Copy defines.ts from upstream for Vite compatibility
- Update package.json with Vite scripts and deps
