PowerAssertion file-level doc previously claimed Linux logind and
Windows SetThreadExecutionState implementations in present tense.
Both are no-ops; the macOS path compiles but is unverified on
Apple Silicon (RB-08). Rewrite top doc to state present vs
planned posture and reference KNOWN-ISSUES.md.
Surfaced as tracked limitations:
- KI-01: macOS App Nap guard pending Apple Silicon verification
- KI-02: Linux power assertion is a no-op
- KI-03: Windows power assertion is a no-op
- KI-04: magnotia-cloud-providers crate not user-exposed in v0.1
(in-memory keystore needs OS keychain before any save-key UX)
README links to KNOWN-ISSUES.md from Status, Platform support
table, and Project documentation. Platform support table notes
adjusted per OS to reflect actual idle-inhibit posture.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>