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Jamie Pine
4e7f8f9bda
The track editor's zoom was clamped to a hardcoded [10, 200] pixels-per-second range, which had no relationship to the project — on a 4-minute story a "max zoom out" of 200 px/s still required scrolling, and on a 5-second story you could zoom all the way in to where every clip was a tiny sliver. Reframed the bounds in the unit the user actually thinks in: how many seconds of timeline are visible at once. Min scope is 10 s (most zoomed in), max scope is the entire project, and the default lands on a 60 s scope (or the full project, whichever is shorter) once the editor measures its visible track width on first mount. The pixels-per-second value still lives in component state (because every downstream calculation already uses it) but minPps/maxPps are computed from `containerWidth − LABEL_COL_WIDTH` and the project's effective duration, so the +/- buttons and the edge-drag handles on the scrollbar all clamp to bounds that move with the project. Re-clamping fires whenever those bounds shift — adding a long clip or resizing the window pulls the current zoom inside the new range instead of leaving the user parked outside it.