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+# [FEATURE] Hide future tasks behind a fold
+
+## Description
+Hide tasks more than 3-7 days out behind a fold.
+
+## User Story
+As a user, I want tasks more than N days out hidden by default so that I can focus on immediate priorities.
+
+## Technical Context
+- Affects: `internal/handlers/handlers.go` (task filtering), `web/templates/partials/todoist-tasks.html` or `tasks-tab.html`
+- Data already has `due_date`; filtering is a presentation concern
+
+## Test Strategy
+
+### Unit Test (Red)
+**File:** `internal/handlers/handlers_test.go`
+
+Test a new filter function `FilterTasksByHorizon(tasks []Task, days int)` returns only tasks within range.
+
+```go
+func TestFilterTasksByHorizon(t *testing.T) {
+    // Given tasks with varying due dates
+    // When filtered with horizon of 7 days
+    // Then only tasks within 7 days are in "visible" slice
+    // And remaining tasks are in "deferred" slice
+}
+```
+
+### E2E Test (Red)
+Verify collapsed section renders with count badge; click expands to show deferred tasks.
+
+## Proposed Approach
+
+1. Add config param `task_horizon_days` (default 7)
+2. Partition tasks in handler into "visible" vs "deferred"
+3. Render deferred in a collapsible `<details>` element with HTMX swap
+4. Show count badge on collapsed header (e.g., "+12 later")
+
+## Affected Components
+- `internal/handlers/handlers.go`
+- `internal/config/config.go`
+- `web/templates/partials/todoist-tasks.html`
+- `web/templates/partials/tasks-tab.html`
+
+## Definition of Done
+- [ ] Tasks beyond horizon hidden by default
+- [ ] Collapsible UI shows count of hidden tasks
+- [ ] Click to expand shows all deferred tasks
+- [ ] Horizon days configurable
+- [ ] Unit tests pass
+- [ ] E2E test confirms behavior