fix(qt): the Popular Tracks play button matches its siblings, and its rows offer Track info

The header's play was a filled 44px accent disc beside two plain 32px
outlined actions and butted the JUMP TO rule; it is now the plain form with
8px of air above. The Popular Tracks row menu gains "Track info" for catalog
rows through ONE lazy TrackInfoModal per artist view, not one per row.

cc

crates/qbz-qt/qml/views/ArtistView.qml

@@ -41,6 +41,7 @@ import com.blitzfc.qbz
 import "../cards"
 import "../controls"
 import "../rows"
+import "../shell"
 import "../theme"
 
 Rectangle {
@@ -865,6 +866,28 @@ Rectangle {
     // paint. Arrivals are coalesced into ONE rebind per frame — the same fix
     // LocalLibraryView carries, at O(n) instead of O(n²), with the covers
     // still appearing progressively (16ms granularity is invisible).
+    // --- Track info for the Popular Tracks rows (2026-09-13) ---------------
+    // ONE lazy modal per artist view (the full Popup tree must not exist per
+    // row). Activated on demand, torn down on close (Qt.callLater so the
+    // Popup is not destroyed mid-signal) — the same shape rows/TrackRow.qml
+    // carries per row.
+    Loader {
+        id: artistTrackInfo
+        active: false
+        sourceComponent: TrackInfoModal { }
+    }
+    Connections {
+        target: artistTrackInfo.item
+        ignoreUnknownSignals: true
+        function onClosed() { Qt.callLater(function () { artistTrackInfo.active = false }) }
+    }
+    function openTrackInfo(trackId) {
+        if (!trackId || trackId === "")
+            return
+        artistTrackInfo.active = true
+        artistTrackInfo.item.openFor(trackId)
+    }
+
     property var _coverInbox: ({})
     Timer {
         id: coverFlush
@@ -1688,11 +1711,11 @@ Rectangle {
         // `controls/CardMenu.qml`, the same primitive rows/TrackRow.qml opens.
         //
         // ABSENT, not dead (the same discipline TrackRow applies): the radio
-        // pair, Share Qobuz link / Song.link and Track info. The first two
-        // need bridge seams that do not exist; the last needs the shared
-        // row's lazy Loader (a TrackInfoModal), and duplicating those per
-        // artist row is exactly the fork-drift this file already paid for
-        // once. (The offline block IS wired — it needs no Loader.)
+        // pair and Share Qobuz link / Song.link, which need bridge seams that
+        // do not exist. Track info IS wired (2026-09-13) through ONE lazy
+        // TrackInfoModal per artist view (`artistTrackInfo` below), not one
+        // per row — the per-row Loader rows/TrackRow.qml carries is what this
+        // comment used to refuse to duplicate.
         CardMenu {
             id: popMenu
             menuWidth: 224
@@ -1749,6 +1772,8 @@ Rectangle {
                     m.push({ "label": t("Go to album", r), "icon": "disc-3", "action": "go-album" })
                 if ((popRow.row.artistId || "") !== "")
                     m.push({ "label": t("Go to artist", r), "icon": "user", "action": "go-artist" })
+                if (!popRow.pulled)
+                    m.push({ "label": t("Track info", r), "icon": "info", "action": "track-info" })
                 return m
             }
             onPicked: function (a) {
@@ -1781,6 +1806,7 @@ Rectangle {
                 else if (a === "recache") QbzPlayer.recacheTrack(id)
                 else if (a === "go-album") QbzAlbum.openAlbum(popRow.row.albumId)
                 else if (a === "go-artist") QbzArtist.openArtist(popRow.row.artistId)
+                else if (a === "track-info") root.openTrackInfo(id)
             }
         }
 
@@ -2759,29 +2785,26 @@ Rectangle {
                     onAction: function (id) { root.bulkAction(id) }
                 }
 
+                // Air between the sticky JUMP TO bar's rule and the row.
+                Item { visible: topTracks.length > 0; width: 1; height: 8 }
                 Row {
                     property string anchorId: "popular-tracks"
                     visible: topTracks.length > 0
                     width: parent.width
                     spacing: 12
                     Text {
-                        width: parent.width - 44 - 32 - 32 - 3 * 12
+                        width: parent.width - 32 - 32 - 32 - 3 * 12
                         anchors.verticalCenter: parent.verticalCenter
                         text: QbzSession.tr("Popular Tracks", QbzSession.trRev)
                         color: theme.textPrimary
                         font.pixelSize: theme.fontHeading
                         font.weight: theme.weightSemibold
                     }
-                    // ArtistPageView.slint:732-737 mounts the SHARED
-                    // CircleAction here — `primary: true` plus an explicit
-                    // `on-surface: true` with the .slint's own reason on the
-                    // line above it: "Plain page background (below the header
-                    // divider) — theme-aware variant so it reads on light
-                    // themes." The port hand-rolled a 44px accent disc
-                    // instead, which duplicated the control AND bypassed that
-                    // arm. `overlay` defaults false = the on-surface arm.
+                    // The SHARED CircleAction, in the same plain 32px outlined
+                    // form as its two siblings (2026-09-13): the filled 44px
+                    // accent disc the .slint carried here clashed with them
+                    // and butted the JUMP TO bar's rule.
                     QbzCircleAction {
-                        primary: true
                         name: "play-fill"
                         anchors.verticalCenter: parent.verticalCenter
                         onClicked: QbzPlayer.playArtistTop(false)