Fix library filter, compact dashboard/credentials UI, add fuzzy audio dedup

- beets_service: filter params now use truthy checks instead of `is not
  None`, since a real <select> left on "(any)" submits an empty string,
  not an absent param -- the filter form silently matched zero rows for
  any real submission. Also match grouping tokens within "; "-joined
  multi-playlist values instead of requiring an exact string match.
- dashboard: credential status renders as compact dot indicators instead
  of badge+text chips, so long scope names (telegram) stay on one line.
- credentials page: two-column grid layout instead of one long column.
- find-fuzzy-dupes.py: add --json/--only-paths flags matching
  dedup-library.sh's convention, so it can plug into the same review
  queue.
- dedup_review_service: add scan_fuzzy() and route confirm_and_apply()
  to the correct underlying script (dedup-library.sh vs
  find-fuzzy-dupes.py) per candidate's pass_name, since tag-based passes
  miss duplicates whose tags differ even when the audio is identical
  (e.g. a remix credited to different artists between two copies).
- dedup page: add a "Scan for audio duplicates" trigger alongside the
  existing tag-based scan.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/templates/credentials/index.html

@@ -8,25 +8,29 @@
   </div>
 </div>
 
-{% for scope, fields in scope_fields.items() %}
-<h2 class="scope-header">{{ scope }}</h2>
-<div class="panel" style="max-width:560px;">
-  <form method="post" action="/settings/credentials/{{ scope }}">
-    {% for field in fields %}
-    <div class="field wide">
-      <label for="{{ scope }}_{{ field }}">
-        {{ field }}
-        {% if field in configured.get(scope, []) %}<span class="badge badge-success" style="margin-left:0.5rem;">set</span>{% endif %}
-      </label>
-      {% if field in ("cookies_txt",) %}
-      <textarea id="{{ scope }}_{{ field }}" name="{{ field }}" rows="6" placeholder="leave blank to keep current"></textarea>
-      {% else %}
-      <input type="password" id="{{ scope }}_{{ field }}" name="{{ field }}" placeholder="leave blank to keep current" autocomplete="off">
-      {% endif %}
+<div class="cred-grid">
+  {% for scope, fields in scope_fields.items() %}
+  <div class="cred-scope">
+    <h2 class="scope-header">{{ scope }}</h2>
+    <div class="panel">
+      <form method="post" action="/settings/credentials/{{ scope }}">
+        {% for field in fields %}
+        <div class="field wide">
+          <label for="{{ scope }}_{{ field }}">
+            {{ field }}
+            {% if field in configured.get(scope, []) %}<span class="badge badge-success" style="margin-left:0.5rem;">set</span>{% endif %}
+          </label>
+          {% if field in ("cookies_txt",) %}
+          <textarea id="{{ scope }}_{{ field }}" name="{{ field }}" rows="6" placeholder="leave blank to keep current"></textarea>
+          {% else %}
+          <input type="password" id="{{ scope }}_{{ field }}" name="{{ field }}" placeholder="leave blank to keep current" autocomplete="off">
+          {% endif %}
+        </div>
+        {% endfor %}
+        <button type="submit" class="btn">Save {{ scope }}</button>
+      </form>
     </div>
-    {% endfor %}
-    <button type="submit" class="btn">Save {{ scope }}</button>
-  </form>
+  </div>
+  {% endfor %}
 </div>
-{% endfor %}
 {% endblock %}

app/templates/dashboard.html

@@ -42,16 +42,9 @@
 {% endif %}
 
 <h2>Credential status</h2>
-<ul class="chip-list">
+<ul class="chip-list auth-chip-list">
   {% for a in auth_states %}
-  <li>
-    {% if a.configured %}<span class="badge badge-success">set</span>{% else %}<span class="badge badge-muted">unset</span>{% endif %}
-    {{ a.scope }}
-    {% if a.days_left is defined %}
-      {% if a.days_left < 14 %}<span class="badge badge-warning">{{ a.days_left }}d left</span>
-      {% else %}<span class="muted">({{ a.days_left }}d left)</span>{% endif %}
-    {% endif %}
-  </li>
+  <li title="{{ a.scope }}: {{ 'configured' if a.configured else 'not configured' }}{% if a.days_left is defined %}, cookie expires in {{ a.days_left }}d{% endif %}"><span class="status-dot {{ 'status-dot-success' if a.configured else 'status-dot-muted' }}{% if a.days_left is defined and a.days_left < 14 %} status-dot-warning{% endif %}"></span>{{ a.scope }}{% if a.days_left is defined %}<span class="muted"> {{ a.days_left }}d</span>{% endif %}</li>
   {% endfor %}
 </ul>
 <p><a href="/settings/credentials">Manage credentials &rarr;</a></p>

app/templates/dedup/index.html

@@ -8,7 +8,10 @@
   </div>
   <div class="actions">
     <form method="post" action="/dedup/scan" class="inline">
-      <button type="submit" class="btn btn-primary">Scan now</button>
+      <button type="submit" class="btn btn-primary" title="Tag-based: matches on artist/title/albumartist across 4 passes">Scan now</button>
+    </form>
+    <form method="post" action="/dedup/scan-fuzzy" class="inline">
+      <button type="submit" class="btn" title="Acoustic fingerprint match -- catches the same recording filed under different tags">Scan for audio duplicates</button>
     </form>
   </div>
 </div>