feat(web): say what a pack was abandoned for

A pack that hard-failed at import blacklisted its release, put every
episode back to missing and left the season reading 0/10, with nothing
on screen joining the two. Every fact was already recorded.

The blacklist now carries its reason out of the database: deck rows read
`blacklisted · size` instead of a bare `blacklisted`, and say whether the
policy turned the file down — relaxable for this title — or the release
itself failed, which a retry only repeats. A season whose pack was
abandoned says so on its row and above its deck, with the release name,
when it failed, and what it failed on. A row the blacklist no longer
answers for keeps rendering and claims no reason.

Two defects from the integration review of #211 sit in the same code and
are fixed here: a waived row threw away the rule it now carries and read
a bare `below policy`, and the empty-eligible count called every waived
row force-grabbable, since #211 gave those rows the rule `overridable`
reads.

Verified against a real browser: series detail, both season decks and
their buckets, at 1280 and 390 px.

Refs #227, #211

web/index.html

@@ -541,6 +541,19 @@
         <button type="button" class="control" id="tv-releases-sweep">re-search</button>
       </header>
       <p class="deck-status readout" id="tv-releases-status" role="status" hidden></p>
+      <!-- issue 227: a pack that downloaded in full and was condemned at
+           import (§5.7). It outlives the status line because it is a fact
+           about the season, not about the request in flight. -->
+      <section class="deck-notice" id="tv-releases-failure" hidden aria-labelledby="tv-failure-label">
+        <h3 class="deck-label" id="tv-failure-label">pack abandoned at import</h3>
+        <p class="notice-release readout" id="tv-failure-release"></p>
+        <p class="notice-line" id="tv-failure-what"></p>
+        <p class="notice-line" id="tv-failure-next"></p>
+        <p class="notice-line dim">
+          nothing was imported, and the torrent was left where it is: nothing is
+          deleted early to satisfy the library (§7.3).
+        </p>
+      </section>
       <div id="tv-buckets"></div>
     </main>