v0.1.0

Initial release. First-class, reusable menu rendering for Claude Code
plugins via the systemMessage-from-Stop-hook pattern empirically
proven against Emasoft/token-reporter-plugin.

Added

• render-menu skill (context: fork, model: haiku,
  agent: general-purpose) — other plugins invoke via
  Skill({skill: "claude-menu-system:render-menu", args: "<spec>"}).
• Stop / StopFailure hooks that emit the queued menu as
  systemMessage at main-session turn end.
• SubagentStop hook that no-ops (systemMessage from subagent-stop
  routes to AI context, not the user terminal — documented).
• 8 render modes: menu, summary, breakdown, status_table,
  panel, multi_box, progress, confirm.
• 5 box styles: heavy (default for menus), rounded (default for
  panels), light, double, ascii. Auto-downgrade to ascii when
  the terminal can't render unicode box-drawing.
• Semantic ANSI palette (border / header / value / success / warning /
  error / info / muted + severity tiers). Auto-strip when NO_COLOR=1,
  CLAUDE_MENU_COLOR=0, or TERM=dumb.
• Display-width-aware padding via unicodedata.east_asian_width —
  correct alignment for emoji + CJK + box-drawing glyphs.
• ANSI-safe text wrapping that preserves color state across continuation
  lines (ported from token-reporter _wrap_ansi).
• Auto-terminal-width detection (COLUMNS env → shutil.get_terminal_size
  → 80 default, capped at CLAUDE_MENU_MAX_WIDTH default 120).
• 10K hook-output cap with tiered truncation (SMALL untouched / BIG
  row-dropped / OVERFLOW title-stubbed) and line-safe truncation
  (cut only at \n boundaries, never mid-ANSI-escape).
• Session-isolated queue dir
  (${TMPDIR}/claude-menu-system/<session_id>/).
• flock-protected concurrent emit (multiple Stop hooks don't race).
• TTL-based stale cleanup (default 60s, configurable via
  CLAUDE_MENU_TTL_SEC).
• 188 tests (≥95% line coverage on every module), all running in
  under 1 second via pytest-xdist.

Notes

• Runtime dependency: stdlib only (no third-party deps).
• Plugin-scoped hooks — picked up by /reload-plugins, no full session
  restart needed.
• Consumer plugins must hard-require claude-menu-system to be enabled.
  Pre-flight check pattern in the README.