A CONFLICTING PR gets no pull_request workflow runs, so `gh pr checks`
reports "no checks reported" and the runs API returns total_count 0. That
looks like a dropped GitHub event, and the reflex fixes for one — empty
commits, draft/ready toggles, revert-and-restore bounces — all leave the
count at zero while adding junk history to the branch.
Record the mergeability check as the first diagnostic step, name the
conflict as the cause, and point at `git merge-tree` for the conflicting
paths.
Move the agent-spine bundle and the stdio/ACP/JSON-RPC app packages out of
core/ and ui/ into a new packages/examples/ group, renamed with a -demo
suffix so the npm name marks them as non-product surface:
core/agent-core -> examples/agent-spine-demo (dsh-agent-spine-demo)
ui/stdio-agent -> examples/stdio-demo (dsh-stdio-demo)
ui/acp-agent -> examples/acp-demo (dsh-acp-demo)
ui/jsonrpc-agent -> examples/jsonrpc-demo (dsh-jsonrpc-demo)
Update every code/config/test reference and reference-only doc mentions, and
regenerate module-graph, config-catalog, and doc-graphs. The jsonrpc bin
(dsh-jsonrpc-agent) and single-file exe (dsh-jsonrpc-agent-pkg) keep their
names; the SDK runtime-startup surface is reconciled separately.
