Adds a bundled productivity skill that lets Hermes organize the user's own
session library conversationally: find sessions by topic via session_search,
summarize goals/decisions from bookends, rename them meaningfully, propose
archives/prunes with a mandatory plan-first + dry-run discipline, and split
requests into parallel workstreams via delegate_task.
Inspired by Perplexity Computer's session management by prompt (changelog
07/27/26): find/summarize past sessions, fork focused follow-ups, rename,
pin/archive with plan-first confirmation, and fan one request out into
parallel per-task sessions.
f508c6e40a