v0.53.0

What's Changed

• feat(desktop): update notice as a full modal with markdown changelog by @mabry1985 in #1188
• feat(skills): user-only skills — a /slash the agent never auto-loads by @mabry1985 in #1189
• fix(desktop): serve /_ds/plugin-kit in the frozen sidecar (plugin iframe theming) by @mabry1985 in #1190
• feat(plugins): docs plugin — agent answers questions from protoAgent's own docs by @mabry1985 in #1191
• feat(plugins): docs plugin views — console reader + ⌘K search (PR2) by @mabry1985 in #1192
• feat(plugins): docs reader tree mirrors the site's Diátaxis→domain grouping by @mabry1985 in #1193

Full Changelog: v0.52.0...v0.53.0