Dismissible OPML Import Banner

Tasks

Task 1: Add dismissed_at migration

Create migration to add dismissed_at (datetime, nullable) to the import_histories table.

Files:

• Create: db/migrate/TIMESTAMP_add_dismissed_at_to_import_histories.rb

Acceptance:

• Migration adds dismissed_at column (datetime, null: true)
• Migration is reversible

Task 2: Create import history dismissal endpoint

Add a route and controller action to dismiss an import history record. Use RESTful pattern: PATCH /import_histories/:id/dismiss or a nested resource.

Files:

• Modify: config/routes.rb — add route for dismissal
• Create: app/controllers/source_monitor/import_history_dismissals_controller.rb — PATCH action sets dismissed_at and responds with Turbo Stream
• Create: test/controllers/source_monitor/import_history_dismissals_controller_test.rb

Details:

• Controller finds ImportHistory by ID, sets dismissed_at = Time.current, saves
• Responds with turbo_stream.remove("source_monitor_import_history_panel")
• Returns 404 if not found
• HTML fallback redirects back to sources index

Task 3: Update banner partial with dismiss button

Add a dismiss/close button to the import history panel that triggers the dismissal endpoint via Turbo Stream.

Files:

• Modify: app/views/source_monitor/sources/_import_history_panel.html.erb

Details:

• Add an "x" or "Dismiss" button in the banner header area
• Button submits via button_to with method: :patch targeting the dismissal endpoint
• Include data: { turbo_stream: true } for inline removal

Task 4: Filter dismissed imports from controller query

Update the sources controller to exclude dismissed import histories from the query.

Files:

• Modify: app/models/source_monitor/import_history.rb — add not_dismissed scope
• Modify: app/controllers/source_monitor/sources_controller.rb:45 — chain .not_dismissed or .where(dismissed_at: nil)
• Create: test/models/source_monitor/import_history_dismissed_test.rb

Acceptance:

• Dismissed imports no longer show in the banner
• New imports (dismissed_at: nil) still show
• Tests verify scope filtering