## What
Updates the project overview language in the three docs that share it,
and fixes a long-standing typo.
- **`README.md`** — replaces the overview paragraph with the
secure-by-default positioning: density relative to standard container
runtimes, resume latency and activation throughput, and native
kernel/network isolation.
- **`docs/architecture.md`** — adopts the same lead sentence, keeping
the existing control-plane detail; `computer infrastructure` → `compute
infrastructure`.
- **`docs/roadmap.md`** — `computer infrastructure` → `compute
infrastructure`.
## Notes
The performance figures in the README paragraph (density multiple,
sub-500ms resume, activation rate) have been discussed and aligned
separately.
Docs-only change; no code or behavior is affected.
Fixed language describing project goals and relationship to Kubernetes
in readme.md, architecture.md and roadmap.md
- changed the top language to focus on project goals instead of
Kubernetes relations
- changed the language describing Kubernetes relationship to describe
value of the Agent Substrate layer and Kubernetes layer
Alex Zakonov