What's changed Added the `SendFeedback` tool: when something goes wrong in a session, Claude can draft a feedback report for you to review and send from `/feedback` (turn off with the `feedbackDrafts` setting) Added `{id, text, cooldownSessions, priority}` entries, `tipsFile`, and `label` to `spinnerTipsOverride`, so organizations can rotate their own tips alongside the built-in ones Added a tip on Bash permission prompts pointing to auto mode, with a one-keystroke "Yes, and switch to auto mode" option Added `/claude-api cost-optimize` to profile an existing project's Claude API spend and work through cost levers (caching, token hygiene, batch, effort, model choice) one measured change at a time Updated the `/claude-api` skill with Admin API coverage (organization members, invites, workspaces, API keys, rate limit reports, workload identity federation, CMEK) Fixed fast arrow-key + Enter sequences acting on the row above the one you navigated to in history search, `/config`, `/mcp`, `/skills`, background tasks, and `/model` Fixed sub-agents dying on a first-call model 404: they now use the session's fallback model chain, and the error returned to the parent includes the error…