v6.0.0

What's Changed

• chore: upgrade GitHub Actions to Node 24 runtimes by @flyingrobots in #20
• chore: prepare v5.3.3 ledger closeout by @flyingrobots in #21
• fix: keep dashboard interactive on TTYs by @flyingrobots in #23
• feat(ui): upgrade git-cas to a Bijou v3 repository explorer by @flyingrobots in #24
• feat: add Relay agent foundation and workflow recenter by @flyingrobots in #25
• docs: recenter Truth docs and planning lifecycle by @flyingrobots in #26
• docs: publish benchmark baselines by @flyingrobots in #27
• docs: add docs maintainer checklist by @flyingrobots in #28
• docs: add planning index consistency review by @flyingrobots in #29
• docs: improve security doc discoverability by @flyingrobots in #30
• docs: add pre-pr doc cross-link audit by @flyingrobots in #31
• docs: rationalize root docs and move guide under docs by @flyingrobots in #32
• docs: audit examples surface by @flyingrobots in #33
• security hardening, convergent encryption, scheme simplification by @flyingrobots in #34
• Prepare v6.0.0 release by @flyingrobots in #35
• [codex] harden v6 vault service decomposition by @flyingrobots in #36

Full Changelog: v5.3.2...v6.0.0