v5.51.3

What's Changed

• [lts/5] docs(releases): add v5.51.2 release notes by @github-actions[bot] in #4138
• [lts/5] ci: redeploy docs when release notes land on a line branch by @github-actions[bot] in #4146
• 5.51.x backport: deterministic JSON escaping repair (#4137) by @jordanfanapour in #4145
• [lts/5] feat(whiteboard): host-controllable ToolRoster (P12 / P14 roster half) by @github-actions[bot] in #4318
• 5.51.x backport: a11y shell landmarks + skip link, focus containment, nameable primitives (#4121) by @MattC-BC in #4303
• 5.51.x: mj sync push/pull load Open App and generated entity packages (port of #4201) by @jordanfanapour in #4462
• [lts/5] 5.51.3 backports: PostgreSQL fixes, cache, credentials, metadata sync by @jordanfanapour in #4523
• [lts/5] Event-driven metadata refresh (#4249), with the dataset cache-slot fix it needs by @jordanfanapour in #4526

Full Changelog: v5.51.2...v5.51.3