docs(openspec): sync + archive status-filters-and-totals (done, CI green)

downloads-list baseline gains the Stopped/Paused filter and total-downloaded
requirements. Covers reported tasks #2 and #18. Commit 671e6ba; CI run
29543702018 green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GpEAzmp4bQ5LDSW5ucuXk7

Author: bezzad

…status-filters-and-totals/.openspec.yaml …status-filters-and-totals/.openspec.yamlopenspec/changes/status-filters-and-totals/.openspec.yaml renamed to openspec/changes/archive/2026-07-17-status-filters-and-totals/.openspec.yaml openspec/changes/status-filters-and-totals/.openspec.yaml renamed to openspec/changes/archive/2026-07-17-status-filters-and-totals/.openspec.yaml

@@ -16,3 +16,21 @@ The downloads grid SHALL let the user read a download's complete file name by ho
 #### Scenario: Failed download also shows its error
 - **WHEN** the pointer hovers over the Name cell of a failed download
 - **THEN** the tooltip shows the full name and the failure reason
+
+### Requirement: A Stopped/Paused filter lists interrupted downloads
+The footer filters SHALL include a Stopped bucket that matches items in the Paused or Stopped state, with a count of exactly those items. The filter buckets (All, Active, Queued, Completed, Stopped, Failed) SHALL be mutually disjoint and jointly cover every item, so a user can always find paused/stopped downloads after a restart.
+
+#### Scenario: Paused downloads are visible after restart
+- **WHEN** the user paused downloads before closing, and reopens the app (interrupted items load as Stopped)
+- **THEN** selecting the Stopped filter lists those paused/stopped items and its count equals their number
+
+#### Scenario: Buckets are disjoint and exhaustive
+- **WHEN** the list contains a mix of Running, Paused, Stopped, Queued, Completed and Failed items
+- **THEN** each item matches exactly one of the non-All buckets and the bucket counts sum to the total item count
+
+### Requirement: Total downloaded size shown in the status bar
+The main-window status bar SHALL display the cumulative downloaded size across all items (human-readable) next to the total speed, updated live.
+
+#### Scenario: Total downloaded reflects the sum
+- **WHEN** several downloads have downloaded bytes
+- **THEN** the status bar shows the sum of their downloaded bytes as a human-readable size beside the speed, and it updates as bytes arrive