feat(panel): add Insert as FX — ReaSampler 9000 onto the selected track, preloaded with the focused capture, over the existing instrument-drop body

src/shell/panel/CLAUDE.md

@@ -10,8 +10,8 @@ VST3 editor (`shell/instrument/`).
 
 Pure layout/hit-test/palette modules the panel draws through (`theme`,
 `component_geometry`, `bank_grid`, `tab_strip`, `mode_switch`, `action_bar`,
-`footer_bar`, `overflow_menu`, `prune_button`, `mode_enable`, `tooltip`, `card_drag`,
-`card_meta`) live in `core/ui` / `core/model` and are documented there — this
+`footer_bar`, `overflow_menu`, `prune_button`, `mode_enable`, `insert_fx_enable`,
+`tooltip`, `card_drag`, `card_meta`) live in `core/ui` / `core/model` and are documented there — this
 directory consumes them but does not own them. The promptless bank-mutation verbs
 (`bankOpCreate`/`Rename`/`Delete`/… + `persistBankOp`) that `panel_bank_ops` skins
 live in `shell/bank_ops`, a sibling directory, not here.

src/shell/panel/panel_layout.cpp

@@ -128,6 +128,14 @@ std::vector<ActionBarRow> topBarRows() {
     rows.push_back({"INSERT_SELECTED_CONFORM", "Insert Conform",
                     "insert selected sample at edit cursor (conform to tempo)",
                     ActionCluster::Placement, true});
+    // The one top-bar row with a live/dead gate: it places the PLAYER, and one instance
+    // holds one capture. Only the payload half of the fold is knowable at draw time —
+    // core/ui/insert_fx_enable.h states why the track half stays a press-time message.
+    rows.push_back({"INSERT_AS_FX", "Insert as FX",
+                    "insert selected sample as ReaSampler 9000 on the selected track",
+                    ActionCluster::Placement,
+                    insertFxButtonEnabled(
+                        static_cast<int>(g_panel.selection.indices.size()))});
     return rows;
 }
 

src/shell/panel/panel_state.h

@@ -41,6 +41,7 @@
 #include "core/ui/component_geometry.h"
 #include "core/ui/drag_out.h"
 #include "core/ui/footer_bar.h"
+#include "core/ui/insert_fx_enable.h"
 #include "core/ui/mode_enable.h"
 #include "core/ui/overflow_menu.h"
 #include "core/ui/prune_button.h"
@@ -133,6 +134,7 @@ using ui::hitTestMenuButton;
 using ui::hitTestPruneButton;
 using ui::hitTestSlot;
 using ui::hitTestTabStrip;
+using ui::insertFxButtonEnabled;
 using ui::kCardNameScrimAlpha;
 using ui::kCardStripHeight;
 using ui::kCardStripPad;
@@ -401,8 +403,9 @@ struct ActionBarRow {
     std::string shortLabel;
     std::string fullName;
     ActionCluster cluster = ActionCluster::Capture;
-    bool enabled = true;  // opposite-mode gate for bottom-bar tag buttons; always true
-                          // for the top bar (unconditional triggers)
+    bool enabled = true;  // opposite-mode gate for the bottom-bar tag buttons, and the
+                          // payload gate for the top bar's Insert as FX; every other top-
+                          // bar row is an unconditional trigger and stays true
 };
 
 // Modifier state at event time. Alt = the replace modifier.