adminandClaude Opus 5.5
56425fca6a
Stage 1 of #338. Game sync needs named places in a song: an event when the playhead passes one, and a switch that jumps to one. This stage adds the markers themselves. Games do nothing with them yet. - A song has markers, each with id, name and tick. A song without markers stores nothing for them. Two markers may share tick and name, since nodes will name them by id. - Markers change neither the sound nor the bake fingerprint. - The song tab draws a strip under the ruler. A marker has a green flag with its name and a faint line through the tracks. Tracks and lanes sit 18 px lower. The ruler of the pattern tab is unchanged. - Double click on an empty place adds a marker on the grid, with Alt or Shift on the exact tick. Dragging moves it in one undo step. - A click on a marker sets the start of playback there. A double click renames it in the name dialog of the hierarchy groups. - The context menu offers Play from here, Rename and Delete marker, on an empty place Add marker. A tooltip shows the full name. The wheel over the strip zooms time like the ruler. - New agent commands add_song_marker, change_song_marker and remove_song_marker. get_asset lists them under markers. Tests: - song-markers in core 6 and editor 4, 1 agent test, with the touched song, agent and MCP tests 175/175 - 9 counter-probes, all compile, all red - e2e 65 on atx: ALL PASSED, 70 checks, 3 new in 65g3. Counter-probe where a dragged marker is not taken over: 65g3 red - gate on atx: CHECK EXIT 0, 332 files, 5093 tests Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>