Bug 1: RENDERS_DIR mismatch (root cause)
- server.ts had hardcoded renders dir, now reads BRADLY_RENDERS_DIR env
- renderQueue.ts saves to ~/Library/.../Bradly/renders/
- server.ts now serves from the same directory
Bug 2: Upload origin pointing to wrong port
- uploadBlobContent.ts used window.location.origin (Vite 5173)
- Remotion bundler needs Express origin (3000) to access media
- Added getExpressOrigin() helper that detects Electron
Bug 3: Batch ZIP export using file-saver (doesn't work in Electron)
- Added saveBlobFile IPC method (preload + main)
- batchExporter.ts now uses native save dialog in Electron
- Web mode falls back to file-saver
kevinguevara