v5.0.1

Fixed

• pipx / pip / Homebrew installs no longer abort. The memory-bank CLI now
  exports MB_PYTHON=sys.executable (plus MB_SKILL_BUNDLE), and
  install.sh/uninstall.sh run every embedded Python step through it. A bare
  system python3 cannot import memory_bank_skill from a pipx/venv install
  and — under set -euo pipefail — aborted the whole install. Direct
  bash install.sh from a git checkout is unaffected (falls back to python3).
• /mb wiki merge on Python 3.11/3.12. merge_semantic_edges() used
  Path.read_text(newline=...), which only exists on Python 3.13; replaced
  with open(newline="") so supported interpreters don't raise TypeError.
• mb-semantic-search.py argument order. The optional mb_path positional
  is now accepted after options (query --json <mb_path>) via
  parse_intermixed_args.

Changed

• README redesigned (centered hero + banner, nav anchors, v5 callout, stats
  table, Diátaxis-grouped docs section, star-history footer); stale v4-era
  claims fixed.
• Landing page: og-image.png + favicon.svg, Open Graph / Twitter-card /
  canonical metadata, refreshed documentation links.
• PyPI metadata: Development Status :: 5 - Production/Stable + expanded
  keywords.

Added

• New docs: docs/first-feature.md (worked end-to-end example),
  docs/troubleshooting.md, docs/agents-reference.md (all 29 subagents).
• SECURITY_AUDIT_REPORT.md archived to docs/security/audit-2026-04-21.md
  with a historical-snapshot note; SECURITY.md supported-versions table
  refreshed.