63 PM skills (30 phase + 8 foundation + 10 utility + 15 tool) plus 4 sub-agents (pm-critic, pm-skill-auditor, pm-changelog-curator, pm-release-conductor) covering the full product lifecycle. v2.20.0 adds slash commands for the three workshop sprint methodologies plus documentation-count validator hardening; no new skills (catalog stays 63; 73 commands). v2.19.0 hardened release-validation tooling so the library polices its own counts, cross-references, and links. v2.18.0 added four highest-consensus content skills (discover-market-sizing, define-prioritization-framework, discover-journey-map, measure-survey-analysis), each with a companion slash command and three thread-aligned samples. It carries forward v2.17.0 native Claude Code sub-agent registration: sub-agent definitions moved to the canonical agents/ directory (the coordination directory was renamed to _agent-context/ to free the name), so all 4 sub-agents auto-discover via @-mention on Claude Code; dispatch skills continue to provide the same capability on Codex CLI, Cursor, Windsurf, Copilot, and Gemini CLI. v2.17.0 also migrates skill frontmatter to the metadata-nested structure per the agentskills.io specification and makes the CI validators bash-3.2 portable. Doc-stack runs on Astro 6.3.x + Starlight 0.39.x. Carries forward v2.15.0 Sprint Skills (Foundation Sprint family of 7 + Design Sprint family of 7 + tool-note-and-vote standalone implementing Knapp/Zeratsky/Kowitz canonical sprint methodologies under classification:tool taxonomy), v2.12.0 OKR Skills set, v2.11.0 Meeting Skills Family, lean canvas, persona, 12 workflows including the foundation-to-design end-to-end arc, thread-aligned samples (Brainshelf + Storevine + Workbench), and lifecycle tools for creating, validating, and iterating skills. Follows the agentskills.io specification.