diff --git a/docs/TODO.md b/docs/TODO.md
index b2a6368..981566a 100644
--- a/docs/TODO.md
+++ b/docs/TODO.md
@@ -97,13 +97,13 @@ hagfish/
 
 ### Phase 4: Frontend
 
-- [ ] 4.1 index.html — dropdown filters (species, zone, gear, month range) and 3 chart containers
-- [ ] 4.2 app.js — fetch species list on load, populate dropdowns, fetch /api/landings, render charts
-- [ ] 4.3 ECharts line chart: x=month, y=mass/value toggle
-- [ ] 4.4 ECharts stacked bar: x=month, y=value by species (top 10 + "other")
-- [ ] 4.5 ECharts donut: species distribution for selected month
-- [ ] 4.6 Loading states, error handling, empty state
-- [ ] 4.7 Responsive layout, plain CSS
+- [x] 4.1 index.html — dropdown filters (species, zone, gear, month range) and 3 chart containers
+- [x] 4.2 app.js — fetch species list on load, populate dropdowns, fetch /api/landings, render charts
+- [x] 4.3 ECharts line chart: x=month, y=mass/value toggle
+- [x] 4.4 ECharts stacked bar: x=month, y=value by species (top 10 + "other")
+- [x] 4.5 ECharts donut: species distribution for selected month
+- [x] 4.6 Loading states, error handling, empty state
+- [x] 4.7 Responsive layout, plain CSS
 
 ### Phase 5: CLI & Scheduling