The description contained an unescaped colon+space, which YAML parses as
a nested mapping key. Switched to a folded block scalar (>), matching the
convention already used by ghost-writer's SKILL.md.
Bumps common to 1.0.2 and updates its description to cover the new
presentation-planning skill; syncs marketplace.json versions/descriptions
and the README table to match.
Consolidates ghost-writer/resolve-todos/tldr-this into doc-help,
hr-manager/interview into common, and the ckb-*/meeting-notes/meeting-prep/quiz
skills into cascade-knowledge-base (renaming the latter three to ckb-meeting-notes,
ckb-meeting-prep, ckb-quiz for naming consistency). Updates marketplace.json and
README.md to match the new plugin set.