Release Preparation

## Description
Final preparation for v1.0 release.

## Tasks
- [ ] Final security review
- [ ] Update all documentation
- [ ] Create release notes
- [ ] Verify code signing works
- [ ] Test release binaries
- [ ] Prepare announcement
- [ ] Update README for release

## Deliverables
- v1.0 release notes
- Signed release binaries
- Complete documentation
- Release announcement

**Target:** 3/1/26