v26.08.31

What's Changed

• ci: keep backend PR gate under five minutes by @markus-barta in #172
• PAI-855 + PAI-856: enforce knowledge and instance isolation by @markus-barta in #174
• PAI-857: enforce scope-correct knowledge identities by @markus-barta in #175
• PAI-858: add isolated Paimos 6 preview shell by @markus-barta in #173
• PAI-859 / PAI-860: durable product sessions and node contract by @markus-barta in #177
• PAI-861: add session-native home projection by @markus-barta in #178
• PAI-857: add fingerprint-locked pre-M162 offline repair by @markus-barta in #179
• PAI-864: Add semantic zoom and source truth by @markus-barta in #180
• PAI-865: add explicit instance orchestrator pin by @markus-barta in #181
• PAI-866: add authorized Paimos 6 command palette by @markus-barta in #182
• PAI-862: deliver voice utterances to agents or Paimos by @markus-barta in #183
• PAI-863: establish structured knowledge contracts by @markus-barta in #184
• PAI-867: promote Paimos 6 to the ppm root by @markus-barta in #185
• PAI-863: activate structured knowledge v1 by @markus-barta in #186
• PAI-867: support protected calendar releases by @markus-barta in #187
• release: v26.08.31 by @markus-barta in #188
• PAI-867: bound exhaustive race and recover calendar cut by @markus-barta in #189
• PAI-867: accept authoritative legacy tag history by @markus-barta in #190

Full Changelog: v5.21.0...v26.08.31