Code & Collaboration
$definemerge--plain-english
TLDRFolding one branch back into another — and the fight when both changed the same line.
A merge is taping two set lists into one show.
You wrote songs on a branch. Someone else — or last-night you — wrote songs on main. A merge is the moment both lists become tonight's set. Git is good at this when you touched different songs.
When both lists name a different encore for the same slot, Git stops. That stop is a merge conflict. The file shows both encores and some angry markers. You pick. Or you write a third. Then you commit the set that will actually play.
Most tapes are quiet
You changed auth.ts. They changed readme.md. Git lays the tape and walks away. The fight is only the shared line.
A pull request is asking the house to play your list. The green button is the merge. "This branch has conflicts" is the sound check telling you two encores collided.
Conflicts are not a moral failing. They are two benches in the same shop touching one knob. Talk, then delete the markers. A file that still contains <<<<<<< will not compile, and it will not impress a judge.
Finish the set before you sleep
Do not leave conflict markers for the morning demo. Agents via MCP can propose a resolution. You still read the encore. The scaffold from npx create-hackhaton-space-stack@latest is easiest to merge when each feature lived on its own branch instead of five people editing main like a group chat.
What this unlocks
Two nights of work in one running app.
Tape the lists. Pick the encore. Play.
