Q-W2: split bank_panel.cpp (3459 LOC) into eight shell/panel TUs — reasampler::panel internals, per-seam public headers, shim retired; zero behavior change, 60/60 green

src/shell/panel/panel_input.h

@@ -0,0 +1,43 @@
+#pragma once
+// panel_input — the input + detection seam of the bank panel (Q-W2 split of
+// bank_panel.h). The .cpp owns mouse-click / wheel / keyboard routing (plain
+// free-function calls per T4-28 — no interface on the per-event path) plus the
+// timer-driven detection passes: new-content auto-tag (D2 Wave 2) and the
+// hover-delay tooltip latch. This header carries the timer/lifecycle surface
+// main.cpp drives and the tail-setting read seam the capture actions consume.
+//
+// REAPER-free as practical: TailSetting is the pure capture-side type.
+
+#include "core/capture/tail_control.h"  // capture::TailSetting — the panel's tail-mode toggle state
+
+namespace reasampler {
+
+// Requests a repaint if the bank changed since the last paint (generation bump).
+// Cheap when nothing changed. Driven by the timer so a capture / project load is
+// reflected without the panel diffing the bank itself. Also hosts the every-tick
+// new-content auto-tag detection (runs whether or not the dock is visible) and the
+// tooltip hover-delay latch.
+void bankPanelRefresh();
+
+// Notifies the panel that persist just (re)loaded a project's view model (membership +
+// active mode). main.cpp calls this on the exact tick it drains persist's load signal
+// and reapplies the active mode. It re-arms the new-content detector so the just-loaded
+// project's PRE-EXISTING content is taken as the baseline (reported as nothing new),
+// never diffed against the previously-open project and mass-tagged into the active mode.
+// This coordinates the detector's project-identity signal with persist's authoritative
+// (GUID-primary) one — the two can no longer diverge on a recycled ReaProject* address,
+// which is what caused a project opened in Design to mis-tag its Arrange tracks. READ/
+// arm of panel state only; no project or bank mutation.
+void bankPanelNotifyProjectLoaded();
+
+// The panel's current tail-mode setting (mode + Manual length), read by the plain
+// CAPTURE_ITEM / CAPTURE_TRACK actions when building a CaptureRequest so a capture
+// applies whatever the panel toggle is set to. Default None (exact bounds) — a
+// capture with no explicit choice stays byte-identical to today. The authoritative
+// setting lives in ReaSamplerSession (it travels inside the .rpp); the panel mutates
+// it via the footer Tail button (cycle) and scroll-wheel (Manual fine-adjust), both
+// owned by this input seam. Safe to call before the panel has ever opened (returns
+// the default). READ of panel state only.
+capture::TailSetting bankPanelTailSetting();
+
+}  // namespace reasampler