v1.5.0

Side questions with /btw — now a first-class, priority-preempting command.

• /btw un-gated (#7): no longer behind the images experimental flag. Ask a side question while the agent works; it's answered from the shared conversation context with tools disabled and nothing written to the transcript (never enters history, compaction, or the next turn).
• Split-screen side panel: while a /btw answer streams the screen splits — main conversation 60% on the left, side answer 40% on the right behind a labelled border. Esc cancels the answer, flushes the queue, and restores the full-width view; the main task is untouched.
• Priority preemption (#18): by default a /btw submitted mid-generation pauses the running task immediately, answers the question, then re-runs the interrupted step from its last committed point (the partial output is rolled back and regenerated — the single-session engine can stop a generation but not resume it). Questions typed during tool execution answer at the next boundary; a /btw typed while a side answer is already streaming joins the FIFO queue (cap 20, drop-oldest).

OpenClaw is vendored as a reference submodule at refs/openclaw (shallow, CI-skipped) — the design follows its side-question model (docs/BTW-DESIGN.md).

Minor bump: the cached system-prompt KV snapshot is invalidated on upgrade.

🤖 Generated with Claude Code