fix: media download UX and table row selection

- Fix: Remove aria2c from yt-dlp to allow native concurrent downloader to print progress
- Fix: Use generic 'Fetching media data...' message instead of hardcoding YouTube
- Fix: Remove onTapGesture from Table cells to restore native macOS SwiftUI row selection and use simultaneousGesture on the Table itself for double clicks

Scripts/fix_table.py

@@ -0,0 +1,23 @@
+import re
+
+with open("Sources/Firelink/DownloadTable.swift", "r") as f:
+    content = f.read()
+
+# Remove doubleClickableCell block
+content = re.sub(r'    private func doubleClickableCell.*?    }\n\n', '', content, flags=re.DOTALL)
+
+# Remove doubleClickableCell wrappers from TableColumn
+content = re.sub(r'doubleClickableCell\(for: item\) \{\n\s*(.*?)\n\s*\}', r'\1', content, flags=re.DOTALL)
+
+# Add simultaneousGesture to Table
+table_end = content.find('            .environment(\\.defaultMinListRowHeight, settings.listRowDensity.minRowHeight)')
+gesture = '''            .simultaneousGesture(TapGesture(count: 2).onEnded {
+                if let id = selection.first, let item = controller.downloads.first(where: { $0.id == id }) {
+                    performPrimaryAction(for: item)
+                }
+            })
+'''
+content = content[:table_end] + gesture + content[table_end:]
+
+with open("Sources/Firelink/DownloadTable.swift", "w") as f:
+    f.write(content)