Expands the claude-code skill with content from official docs and community
cheat sheets that was missing from v2.0:
Slash commands: /cost, /btw, /plan, /loop, /batch, /security-review,
/resume, /effort (with auto level), /mcp, /release-notes, /voice details
Keyboard shortcuts: Alt+P (model), Alt+T (thinking), Alt+O (fast mode),
Ctrl+V (paste image), Ctrl+O (transcript), Ctrl+G (external editor)
Ultrathink keyword for max reasoning on a specific turn
Rules directory: .claude/rules/*.md and ~/.claude/rules/*.md
Auto-memory: ~/.claude/projects/<proj>/memory/ (25KB/200 lines limit)
Environment variables: CLAUDE_CODE_EFFORT_LEVEL, MAX_THINKING_TOKENS,
CLAUDE_CODE_NO_FLICKER, CLAUDE_CODE_SUBPROCESS_ENV_SCRUB
MCP limits: 2KB tool desc cap, maxResultSizeChars 500K, transport types
Reorganized slash commands into Session/Development/Configuration groups
Reorganized keyboard shortcuts into Controls/Toggles/Multiline groups