Work in progress on top of the OSS-578 parity branch, committed to preserve it
outside the worktree rather than to ship it.
Retires the byoc-* QA docs and e2e specs and adds declarative-* replacements,
plus new QA docs and specs for a2ui-recovery, a2ui-fixed-schema, beautiful-chat,
gen-ui-interrupt, interrupt-headless, mcp-apps, reasoning-default,
reasoning-custom, threadid-frontend-tool-roundtrip and
tool-rendering-reasoning-chain. declarative-gen-ui.spec.ts is largely rewritten.
Also touches agent_server.py, readonly_state_agent_context.py, the copilotkit
route and PARITY_NOTES.md.
Unreviewed and unverified. PR #6235 is untouched: this goes to its own branch
because the local branch and the PR branch have diverged.
Lukas Moschitz
fae400eddf