Plan 1: UI Quick Fixes

Three independent UI fixes: OPML import warning, toast positioning, and dashboard table alignment.

Tasks

Task 1: Fix OPML import navigation warning on completion

Files: app/views/source_monitor/import_sessions/steps/_confirm.html.erb

Add data: { action: "submit->confirm-navigation#disable" } to the Start Import form (line 113-115) so the confirm-navigation controller's guards are removed before the form submits and the Turbo Stream redirect fires.

The form currently:

<%= form_with model: import_session,
      url: source_monitor.step_import_session_path(import_session, step: "confirm"),
      method: :patch do |form| %>

Change to:

<%= form_with model: import_session,
      url: source_monitor.step_import_session_path(import_session, step: "confirm"),
      method: :patch,
      data: { action: "submit->confirm-navigation#disable" } do |form| %>

Task 2: Push toast notification container below nav header

Files: app/views/layouts/source_monitor/application.html.erb

Change top-4 to top-16 on line 16:

<div class="pointer-events-none fixed inset-x-0 top-16 z-50 flex justify-end px-6"

This pushes the notification container from 16px to 64px from the top, clearing the nav header.

Task 3: Fix dashboard fetch schedule table column alignment

Files: app/views/source_monitor/dashboard/_fetch_schedule.html.erb

Add table-fixed to the table class and explicit widths to all <th> elements:

• Source: w-[45%]
• Status: w-[15%]
• Next Fetch: w-[22%]
• Interval: w-[18%]

Change:

<table class="min-w-full divide-y divide-slate-200 text-left text-sm">

To:

<table class="min-w-full table-fixed divide-y divide-slate-200 text-left text-sm">

And update all <th> elements with explicit widths.

Task 4: Add/update tests

• Test that the import confirm form includes the disable action data attribute
• Verify system tests for dashboard still pass with table-fixed layout
• Run existing import session and dashboard tests to verify no regressions

Acceptance Criteria

• Clicking "Start import" on OPML confirm step does NOT trigger beforeunload/turbo warning
• Toast notifications render below the nav header (top-16 = 64px)
• All dashboard fetch schedule tables have consistent column widths
• All existing tests pass
• RuboCop zero offenses