Fix Windows Codex CLI sandbox failures

Add Windows Codex CLI compatibility fixes and fork README

Merge branch '0.9.14'

docs: add v0.9.14 release notes draft

fix: add explicit UTF-8 encoding to external tool report readers

refactor: consolidate lifecycle phase derivation and fix force-rescan review marker

fix: check all graph keys for normalization, not just first 3

fix: stale focus counts across status/next/scan commands

feat: add plan_checkpoint as canonical score checkpoint with sparkline

refactor: enforce single-writer lifecycle, eliminate side-channels

feat: hide lifecycle jargon from users, auto-resolve communicate-score

refactor: remove legacy phase inference, unify snapshot derivation

feat: simplify lifecycle phases to plan/execute modes

fix: skip tree-sitter spec tests when grammar not available in CI

fix: skip tree-sitter spec tests when grammar not available in CI