feat(jobs): let a panel answer for every kind, at either density

Three properties the phone's band needs, added here so it is the same
panel rather than a second job UI -- which is what keeps
`applyJobControl` and its "you will discard hours of downloading"
confirmation in the picture.

`kinds="*"` is every kind, which is what the header indicator was for.
Spelled as a star rather than taken as the meaning of an empty
attribute, because empty is what a typo and a dropped binding both
produce and "show everything" is the wrong thing to do by accident;
empty still shows nothing.

`density` is passed to `job-row`, whose `compact` variant its own
source calls "the popover density" -- which is exactly what the band
replaces. `full` stays the default, so the four settings call sites are
untouched.

`active-only` drops terminal rows. The band is in the layout, so a
finished row there holds the content down after the work is done;
Settings keeps them, because that is where "did the last scan work" is
asked and a finished row there dismisses itself.

frontend/src/components/jobs/job-panel.ts

@@ -51,6 +51,14 @@ export class JobPanel extends LitElement {
      * literal in a template, and one of them is inside an HTMX-adjacent
      * settings page where a property binding would be one more thing to
      * remember.
+     *
+     * **`*` means every kind**, which is the phone's band (#62) and
+     * nothing else: there, this panel is standing in for the header
+     * indicator, whose whole job was to be the one view of everything
+     * at once. It is spelled `*` rather than taken as the meaning of an
+     * empty attribute, because empty is what a typo and a missing
+     * binding both produce and "show everything" is the wrong thing to
+     * do by accident. Empty still shows nothing.
      */
     @property({ type: String })
     kinds = '';
@@ -59,6 +67,31 @@ export class JobPanel extends LitElement {
     @property({ type: String })
     heading = '';
 
+    /**
+     * Row density, passed to `job-row`.
+     *
+     * `full` adds elapsed time and per-job statistics and is what a
+     * settings section wants, so it stays the default and the four
+     * existing call sites are unchanged. `compact` is what `job-row`
+     * itself calls "the popover density", and it is what the phone's
+     * band uses (#62) — there this panel *is* the popover, on a screen
+     * 439 CSS px tall, and the full density spent 259 of them.
+     */
+    @property({ type: String })
+    density: 'compact' | 'full' = 'full';
+
+    /**
+     * Drop finished rows.
+     *
+     * For the phone's band (#62), which is *in the layout*: a finished
+     * row there is a banner that stays after the work is done and keeps
+     * the content pushed down. Settings keeps them, because that is
+     * where "did the last scan work" is asked, and a finished row there
+     * dismisses itself.
+     */
+    @property({ type: Boolean, attribute: 'active-only' })
+    activeOnly = false;
+
     @state()
     private jobs: Job[] = [];
 
@@ -162,9 +195,14 @@ export class JobPanel extends LitElement {
     }
 
     private get mine(): Job[] {
-        const wanted = this.wanted;
+        const ofKind =
+            this.kinds.trim() === '*'
+                ? this.jobs
+                : this.jobs.filter((job) =>
+                      this.wanted.has(job.kind as JobKind),
+                  );
 
-        return this.jobs.filter((job) => wanted.has(job.kind as JobKind));
+        return this.activeOnly ? ofKind.filter((job) => !isTerminal(job)) : ofKind;
     }
 
     private openDetails(id: string) {
@@ -196,7 +234,7 @@ export class JobPanel extends LitElement {
                         <div class="job-entry">
                             <job-row
                                 .job=${job}
-                                variant="full"
+                                variant=${this.density}
                                 @job-control=${applyJobControl}
                             ></job-row>
                             <button

frontend/test/components/job-panel.test.ts

@@ -76,6 +76,68 @@ describe('<job-panel>', () => {
     expect(titles(el)).toEqual(['Building the index', 'Filling in artists']);
   });
 
+  /**
+   * #62. The phone's band has no kinds to name: it is standing in for
+   * the header indicator, whose whole job was to be the one view of
+   * everything at once.
+   */
+  it('answers for every kind when asked with a star', async () => {
+    const el = await fixture<LitElement>('job-panel', { kinds: '*' });
+
+    await snapshot([
+      job({ id: 'scan:1', kind: 'library-scan', title: 'Scanning Music' }),
+      job({ id: 'idx', kind: 'index-build', title: 'Building the index' }),
+      job({ id: 'dl:1', kind: 'download', title: 'Downloading Glass Harbour' }),
+    ]);
+    await el.updateComplete;
+
+    expect(titles(el)).toEqual([
+      'Scanning Music',
+      'Building the index',
+      'Downloading Glass Harbour',
+    ]);
+  });
+
+  /**
+   * The other half of that, and the reason it is a star rather than the
+   * meaning of an empty attribute: empty is what a typo and a dropped
+   * binding both produce, and "show everything" is the wrong thing to
+   * do by accident.
+   */
+  it('still shows nothing when asked for nothing', async () => {
+    const el = await fixture<LitElement>('job-panel', { kinds: '' });
+
+    await snapshot([job({ id: 'scan:1', kind: 'library-scan' })]);
+    await el.updateComplete;
+
+    expect([el.hidden, rows(el)].map(String)).toEqual(['true', '']);
+  });
+
+  /**
+   * `full` stays the default so the four settings call sites are
+   * untouched; the band asks for the density `job-row` calls "the
+   * popover density", because on the phone this panel *is* the popover.
+   */
+  it('passes its density to the rows, defaulting to full', async () => {
+    const settings = await fixture<LitElement>('job-panel', { kinds: '*' });
+
+    await snapshot([job()]);
+    await settings.updateComplete;
+
+    const band = await fixture<LitElement>('job-panel', {
+      kinds: '*',
+      density: 'compact',
+    });
+
+    await snapshot([job()]);
+    await band.updateComplete;
+
+    expect([
+      rows(settings)[0]?.getAttribute('variant'),
+      rows(band)[0]?.getAttribute('variant'),
+    ]).toEqual(['full', 'compact']);
+  });
+
   /**
    * An idle panel in four places is four pieces of furniture describing
    * an absence — and `hidden` rather than an empty render, because the