[TASK] README.md

[kirich1409]

Context

Landing README for the repo.

Acceptance criteria

• Sections present: What, Install (Homebrew tap), Quickstart (scan/clean/restore), Safety model (pointer to SECURITY.md), Status badge, License.
• No claims unsupported by 0.1 scope.

Files to touch (estimate)

best-effort estimate; agent refines during implementation

Implementation notes

n/a

Dependencies

None.

Safety checklist

See .github/ISSUE_TEMPLATE/task.yml — tick applicable invariants in the issue if any destructive path is touched.

Definition of Done

• Acceptance criteria satisfied and verifiable
• Tests added or updated
• No build / lint / test regressions
• Self-review against research-report invariants
• Code review approved