Add burst job scheduling, enhance timeline lane management, and improve tooltip functionality

app/views/views.py

@@ -87,22 +87,43 @@ def _build_day_timeline(
     # Lane (row) assignment so overlapping/adjacent bars stack vertically.
     # An entry occupies [left, left+width); for collision purposes scheduled
     # markers are widened slightly so back-to-back scheduled jobs separate.
+    # Lanes are capped at MAX_LANES — additional collisions are pushed to the
+    # right of the last entry on the bottom lane (visualising "and N more
+    # serialised after this one") rather than growing the track vertically.
     GAP = 0.2  # % units
     MIN_COLLISION_WIDTH = 1.2
+    MAX_LANES = 3
     lane_ends: list[float] = []
+    lane_visible_ends: list[float] = []
     for e in entries:
         coll_width = max(e["width"], MIN_COLLISION_WIDTH)
-        coll_end = e["left"] + coll_width
         placed = False
         for i, end in enumerate(lane_ends):
             if e["left"] >= end + GAP:
-                lane_ends[i] = coll_end
+                lane_ends[i] = e["left"] + coll_width
                 e["lane"] = i
                 placed = True
                 break
         if not placed:
-            e["lane"] = len(lane_ends)
-            lane_ends.append(coll_end)
+            if len(lane_ends) < MAX_LANES:
+                e["lane"] = len(lane_ends)
+                lane_ends.append(e["left"] + coll_width)
+                lane_visible_ends.append(e["left"] + e["width"])
+            else:
+                # All lanes occupied — shunt this entry horizontally onto the
+                # last lane, immediately after whatever is already there. We
+                # advance by the previous entry's *visible* width (tracked
+                # separately) rather than the inflated collision width, so
+                # scheduled markers sit flush against each other.
+                last = MAX_LANES - 1
+                new_left = lane_visible_ends[last] + GAP
+                e["left"] = new_left
+                e["lane"] = last
+                lane_ends[last] = new_left + coll_width
+                lane_visible_ends[last] = new_left + e["width"]
+                continue
+        # Track visible end too (used only for chaining on the last lane).
+        lane_visible_ends[e["lane"]] = e["left"] + e["width"]
 
     return {
         "date": day,