Release v0.3.0 — Skill Tool Usage Visualization · anhyobin/mac-app-for-claude-code

Added

Skill tool usage visualization — extracts per-skill invocation counts
from both the main session JSONL and every subagent JSONL, keyed by the
full skill name (plugin namespaces like oh-my-claudecode:hud preserved).
Surfaced in two places:
- Session detail (expanded view): a one-line 🧩 Skills: summary
  below the thinking-block row, sorted by count DESC / name ASC. Shows
  top 4 entries joined by ·; overflow is +N more. Bound to
  totalSkillCounts (main + all subagents, active and completed) so
  skill calls remain visible after subagents drop off the active list.
- Agent detail (expanded agent row): a purple-tinted chip section
  using FlowLayout, placed between the existing Tools and Files
  sections. Count shown only when > 1.
Skill counter badge (🧩 N) on collapsed active-session and
recent-session rows, matching the existing thinking-counter (🧠 N)
pattern. Hidden when zero. Active rows use the session-wide total
(main + subagents); recent rows use main-session counts only (subagent
data is not loaded for recent sessions).

App footer version was hardcoded at "v0.2.0" — now reads from
Info.plist dynamically so it stays in sync on every version bump.