Q-W1 code-review follow-ups: restore 104 trailing newlines, relocate reasampler_uid.h to core/wire, drop ext_keys namespaces shim, add slot_map_tests, golden serialize literals for 4 modules, namespaces.h/pragma-once ordering sweep. 60/60 green.

src/core/ui/action_bar.cpp

@@ -151,4 +151,4 @@ int hitTestActionBar(int px, int py, const ActionBarRect& bar,
     return -1;  // inter-button/cluster gap or the overflow dead-zone — a clean miss
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/action_bar.h

@@ -148,4 +148,4 @@ std::vector<ActionBarSlot> computeBarSlots(const ActionBarRect& bar,
 int hitTestActionBar(int px, int py, const ActionBarRect& bar,
                      const std::vector<ClusterSpec>& clusters, const ActionBarSpec& spec);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/bank_grid.cpp

@@ -224,4 +224,4 @@ float compressAmplitudeForDisplay(float linear) {
     return linear < 0.0f ? -clamped : clamped;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/bank_grid.h

@@ -175,4 +175,4 @@ constexpr float kDisplayFloorDb = -60.0f;
 // (stays on the midline). Full-scale (|linear| == 1.0f) returns exactly ±1.0f.
 float compressAmplitudeForDisplay(float linear);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/card_drag.cpp

@@ -93,4 +93,4 @@ int hitTestSlot(int px, int py, const std::vector<SlotCellRect>& rects) {
     return -1;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/card_drag.h

@@ -144,4 +144,4 @@ std::vector<SlotCellRect> computeSlotRectsForDrop(int maxSlot, int panelWidth,
 // callers reason in model slots.
 int hitTestSlot(int px, int py, const std::vector<SlotCellRect>& rects);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/card_meta.cpp

@@ -61,4 +61,4 @@ std::string formatSecondsMs(double lengthSeconds) {
     return buf;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/card_meta.h

@@ -52,4 +52,4 @@ std::string formatBarsBeats(const MusicalLength& m);
 //   * negative length is clamped to "0.000" (a length is never negative; defensive).
 std::string formatSecondsMs(double lengthSeconds);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/component_geometry.cpp

@@ -105,4 +105,4 @@ int waveformColumnCount(const KitBox& box) {
     return w > 0 ? w : 0;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/component_geometry.h

@@ -126,4 +126,4 @@ int hitTestListRow(int px, int py, const KitBox& list, int rowHeight, int rowCou
 // identical whether bins == columns or bins == k*columns) and wastes memory and CPU.
 int waveformColumnCount(const KitBox& box);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/drag_out.cpp

@@ -51,4 +51,4 @@ PathList assemblePathList(const std::vector<ResolvedSample>& resolved) {
     return out;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/drag_out.h

@@ -129,4 +129,4 @@ struct PathList {
 // case-insensitive dedup on Windows — the pure layer does not guess a platform rule).
 PathList assemblePathList(const std::vector<ResolvedSample>& resolved);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/footer_bar.cpp

@@ -66,4 +66,4 @@ FooterHit hitTestFooterBar(int px, int py, const FooterBarLayout& layout) {
     return FooterHit::None;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/footer_bar.h

@@ -103,4 +103,4 @@ FooterBarLayout computeFooterBar(const FooterRect& footer, const FooterBarSpec&
 // mode_switch over the toggle box), then the Tail hit; this returns which region was struck.
 FooterHit hitTestFooterBar(int px, int py, const FooterBarLayout& layout);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/mode_enable.cpp

@@ -18,4 +18,4 @@ bool tagButtonEnabled(const std::string& activeModeId, TagTarget target) {
     return activeModeId != targetId;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/mode_enable.h

@@ -36,4 +36,4 @@ enum class TagTarget {
 // disable an action the user can still reach), so a future added mode never dead-locks the bar.
 bool tagButtonEnabled(const std::string& activeModeId, TagTarget target);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/overflow_menu.cpp

@@ -39,4 +39,4 @@ bool hitTestMenuButton(int px, int py, const MenuButtonRect& button) {
            py >= button.y && py < button.y + button.height;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/overflow_menu.h

@@ -65,4 +65,4 @@ MenuButtonRect computeMenuButton(const MenuBarRect& bar, const MenuButtonSpec& s
 // hit-test agree on the same pixels. An empty button never claims a point (always false).
 bool hitTestMenuButton(int px, int py, const MenuButtonRect& button);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/prune_button.cpp

@@ -36,4 +36,4 @@ bool hitTestPruneButton(int px, int py, const ButtonRect& button) {
            py >= button.y && py < button.y + button.height;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/prune_button.h

@@ -79,4 +79,4 @@ ButtonRect computePruneButton(const FooterRect& footer, const PruneButtonSpec& s
 // so a suppressed button cannot be accidentally clicked.
 bool hitTestPruneButton(int px, int py, const ButtonRect& button);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/tab_strip.cpp

@@ -109,4 +109,4 @@ TabHit hitTestTabStrip(int px, int py, const TabStripRect& strip, int tabCount,
     return miss;  // track dead space (no tab under the point)
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/tab_strip.h

@@ -124,4 +124,4 @@ struct TabHit {
 TabHit hitTestTabStrip(int px, int py, const TabStripRect& strip, int tabCount,
                        const TabStripSpec& spec, int scrollOffset);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/theme.cpp

@@ -190,4 +190,4 @@ double textFloor(TextClass cls) {
     return cls == TextClass::Body ? 4.5 : 3.0;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/theme.h

@@ -115,4 +115,4 @@ double contrastRatio(const KitColor& a, const KitColor& b);
 // pair the kit actually draws.
 double textFloor(TextClass cls);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/tooltip.cpp

@@ -50,4 +50,4 @@ TooltipBox computeTooltip(int anchorX, int anchorY, int anchorW, int anchorH,
     return box;
 }
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui

src/core/ui/tooltip.h

@@ -59,4 +59,4 @@ TooltipBox computeTooltip(int anchorX, int anchorY, int anchorW, int anchorH,
                           int textW, int textH, int clientW, int clientH,
                           const TooltipSpec& spec);
 
-} // namespace reasampler::ui
+} // namespace reasampler::ui