[EItanya]

#3586 bundled seven backports, and it was squash-merged by mistake, which collapsed them into one commit (a08cde76a) on release/v1.0.x. This reverts that commit. The release branch tree goes back to exactly what it was at e309a5b7a, so the backports can land again as separate commits through the stacked PRs that follow.

This is the bottom of the stack. Merge it first.

Stack (merge in order, bottom first):

1. revert: undo squashed backport #3586 on v1.0.x #3595 revert of fix: backport pre-release fixes to v1.0.x #3586
2. fix(ci): restore upgrade tests from RC3 (v1.0.x backport) #3596 backports fix(ci): restore upgrade tests from RC3 #3558
3. fix(ui): show when the Substrate lists were read, not a running age (v1.0.x backport) #3597 backports fix(ui): show when the Substrate lists were read, not a running age #3545
4. feat(session): revert crashed runtimes through RevertSession (v1.0.x backport) #3598 backports feat(session): revert crashed runtimes through RevertSession #3395
5. refactor: Remove helpers orphaned by KMCP removal (v1.0.x backport) #3599 backports refactor: Remove helpers orphaned by KMCP removal #3562
6. refactor(api): move MCP header resolution out of v1alpha3 (v1.0.x backport) #3600 backports refactor(api): move MCP header resolution out of v1alpha3 #3563
7. fix(controller): move a ModelConfig condition's transition time only on a status change (v1.0.x backport) #3601 backports fix(controller): move a ModelConfig condition's transition time only on a status change #3340
8. fix(adk): defer MCP tool discovery until invocation (v1.0.x backport) #3602 backports adk/mcp: defer tool discovery until invocation #3560

🤖 Generated with Claude Code

[EItanya]

Closing: the team decided to leave release/v1.0.x as it is for stability, so neither the revert of #3586 nor the re-stacked backports will land.

Comment left by Claude on behalf of @EItanya

[blacksmith-sh]

Found 1 test failure on Blacksmith runners:

Failure

Test	View Logs
github.com/kagent-dev/kagent/go/core/test/upgrade/TestRollingUpgradeCompatibility	View Logs

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