Relay 0.23.0

TL;DR: Ask another agent for a second opinion, merge pull requests right from Relay (and from the phone), and a pile of phone fixes.

• Ask for a second opinion on any answer: pick another agent and model, it checks the answer in its own read-only thread, and its take shows under the answer. It only reaches the original agent if you send it.
• Pull requests show whether they're ready to merge, and you can merge them on GitHub, Gitea and Azure DevOps. Merged PRs follow through to their outcome.
• The phone app can read and review pull requests, and Android gets a Pull requests tab with a merge box.
• Schedules can start from templates.
• Threads started by another thread can report back to it, and agents can wake their own thread later.
• OpenCode turns that OpenCode starts by itself now show up in the thread.
• Agents' form questions over ACP come through the question card.
• An answer's actions stay visible for 2s after it finishes; hovering its speed shows the cache hit.
• Hovering a file link shows its full path; cut-off thread titles in the sidebar fade instead of ending in "…".
• Android: offers app updates on the pairing screen, can stop Relay until the app is opened again, waits for a network instead of retrying into nothing, and bottom sheets and the thread filter behave better.
• Phone fixes: drafts no longer vanish or come back stale, a held steer isn't shown twice, and settling a running thread works from the activity list.
• Fixes: answer images with spaces in the path show up, quoting an answer no longer picks up button labels or its speed, the diff stat stays visible on long file names, and resizing panes is smoother.