Feature: Inline-expand summary + Q&A in the list (ADR-031, #16)
  As a reader skimming my summaries
  I want to open a summary and its Q&A in place in the list
  So that I get the full read and follow-up without leaving the list (SPA-like, no page hop)

  # HTMX inline-expand, no SPA framework (ADR-031). Each scenario maps to a Go test
  # in scenario_coverage_test.go (the BDD name-coverage gate).

  Scenario: A summarized card expands to the full summary in place
    Given a summarized video in my list
    When I expand its card
    Then the full summary, highlights, and takeaways are returned as an in-place card fragment, not a full page

  Scenario: An expanded card collapses back to the compact card
    Given an expanded card
    When I collapse it
    Then the compact card fragment is returned in its place

  Scenario: The expanded card offers the Q&A dock
    Given chat is enabled
    When a summarized card is expanded
    Then the expanded card includes the deeper-dive chat affordance for that video

  Scenario: Only a summarized card offers expand
    Given a discovered but not-yet-summarized card
    When the card is rendered
    Then it shows its summarize/queue footer and no expand affordance

  Scenario: With JS off the card still reaches the full summary
    Given a summarized card
    When it is rendered
    Then its expand affordance carries an href to the detail page as a no-JS fallback

  Scenario: The detail page and the expanded card show the same summary
    Given a summarized video
    When I view it on the detail page and as an expanded card
    Then both render the same summary body (one shared fragment, no drift)