inherit Mental model: "I am the child. I want what my parent has." Brings the current branch (and optionally its descendants) up to date with its parent. Inbound counterpart to (outbound to a target) and (forks a new child from a parent). When to use - Current branch is stale relative to its base. - A stack of dependent branches needs the parent's latest commits cascaded down. - Web sessions or minimal environments where , , aren't available. Do NOT use to send changes upward — that's . Do NOT use to create a new branch — that's . Why merge, not rebase Autonomous mode's blocks , , , and . Mer…