Merge quattro into hermes-agent

Catches the branch up on 94 commits so what lands here is reviewed against
current quattro, and so #8611 contributes its own five files rather than
dragging a partial catch-up in behind it.

test/shell.d/default-agent-test.sh

@@ -459,7 +459,7 @@ assert_bypass() {
 assert_launch pi pi "Review this project"
 assert_launch omp omp --auto-approve -- "Review this project"
 assert_launch opencode opencode --auto --prompt "Review this project"
-assert_launch ori ori code --prompt "Review this project"
+assert_launch ori ori code --interactive --prompt "Review this project"
 assert_launch claude claude --permission-mode auto -- "Review this project"
 assert_launch codex codex --approve-for-me -- "Review this project"
 assert_launch crush crush run "Review this project"