openstack/heat — 2026-09-12

Database session hygiene. The bulk of code changes tighten how Heat runs DB queries, with four separate patches moving query execution inside explicit session scopes across the engine. It's a narrow, repetitive cleanup but touches multiple query sites and lands consistently across the module.

Resource lifecycle. On the orchestration side, internal ports are now deleted after server deletion completes, closing a gap where Nova-side teardown could leave Heat-managed ports behind (1003931).

Maintenance and branching. A typo sweep touches eleven strings across the tree, and tox configuration sheds a redundant passenv and a stale neutron-lib hacking-checks setting. The release-notes build no longer installs the code, and tox.ini-only updates now skip tempest and grenade jobs. Finally, master was opened for the next cycle with the stable/2026.2 branch cut: .gitreview, TOX_CONSTRAINTS_FILE, and the master version marker were all updated in lockstep.