Show one row per recurring chore in the flat task list

The recurrence scheduler materializes a series' next instance once the
current one comes due, regardless of whether it was completed -- that's
deliberate, so ignoring an occurrence doesn't stall the series. The side
effect is that the flat task list shows an unfinished chore and its
already-generated successor at the same time: "Bills" appears twice right
now (Sep 1 overdue + Oct 1), as does "Bones's meds".

CollapseRecurringSeries keeps only the earliest-due open instance per
series, which is the one actually owed. Applied to the atoms list only --
the timeline and widget are date-anchored, where each instance correctly
belongs to its own day, so they keep all of them.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018AwnALZL6bD4VBtATDVv3B

1 files changed, 5 insertions, 0 deletions

diff --git a/internal/handlers/atoms.go b/internal/handlers/atoms.go
index 16cd003..131a3d0 100644
--- a/internal/handlers/atoms.go
+++ b/internal/handlers/atoms.go
@@ -27,6 +27,11 @@ func BuildUnifiedAtomList(s *store.Store, claudomator api.ClaudomatorClient) ([]
 	if err != nil {
 		log.Printf("Warning: failed to fetch native tasks: %v", err)
 	}
+	// This is the flat "what's open" list, so a recurring chore belongs in it
+	// once, not once per already-materialized future instance -- see
+	// CollapseRecurringSeries. The timeline and widget deliberately don't do
+	// this: there, each instance sits on its own day.
+	nativeTasks = models.CollapseRecurringSeries(nativeTasks)
 
 	atoms := make([]models.Atom, 0, len(gTasks)+len(nativeTasks))