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/instrument/engine/master_gain.cpp

@@ -48,4 +48,4 @@ void formatMasterGainLabel(double norm, char* buf, std::size_t len) {
     std::snprintf(buf, len, "%+.1fdB", db);
 }
 
-}  // namespace reasampler::instrument::engine
+}  // namespace reasampler::instrument::engine

src/core/instrument/engine/master_gain.h

@@ -55,4 +55,4 @@ double masterGainNormFromLinear(double linear);
 // including the terminator. Pure.
 void formatMasterGainLabel(double norm, char* buf, std::size_t len);
 
-}  // namespace reasampler::instrument::engine
+}  // namespace reasampler::instrument::engine

src/core/instrument/engine/pitch_shift.cpp

@@ -431,4 +431,4 @@ AudioSample PitchShifter::processImpl(AudioSample in, const SpliceEvent* linked)
     return static_cast<AudioSample>(out);
 }
 
-}  // namespace reasampler::instrument::engine
+}  // namespace reasampler::instrument::engine

src/core/instrument/engine/pitch_shift.h

@@ -227,4 +227,4 @@ private:
                                      // live fade by that rate.
 };
 
-}  // namespace reasampler::instrument::engine
+}  // namespace reasampler::instrument::engine

src/core/instrument/engine/velocity_curve.cpp

@@ -269,4 +269,4 @@ bool VelocityCurve::equals(const VelocityCurve& other, double eps) const {
     return true;
 }
 
-}  // namespace reasampler::instrument::engine
+}  // namespace reasampler::instrument::engine

src/core/instrument/engine/velocity_curve.h

@@ -168,4 +168,4 @@ private:
     std::vector<VelocityPoint> points_;
 };
 
-}  // namespace reasampler::instrument::engine
+}  // namespace reasampler::instrument::engine

src/core/instrument/map/bank_sync.cpp

@@ -60,4 +60,4 @@ AssignConsumeDecision consumeDecision(const std::optional<AssignmentRequest>& re
     return d;
 }
 
-}  // namespace reasampler::instrument::map
+}  // namespace reasampler::instrument::map

src/core/instrument/map/bank_sync.h

@@ -104,4 +104,4 @@ AssignConsumeDecision consumeDecision(const std::optional<AssignmentRequest>& re
                                       std::int64_t lastConsumed, bool resolves,
                                       bool isFocusedTarget);
 
-}  // namespace reasampler::instrument::map
+}  // namespace reasampler::instrument::map

src/core/instrument/map/bridge_marshal.cpp

@@ -13,4 +13,4 @@ std::optional<std::string> decodeGetProjExtState(int apiReturn,
     return buffer;
 }
 
-}  // namespace reasampler::instrument::map
+}  // namespace reasampler::instrument::map

src/core/instrument/map/bridge_marshal.h

@@ -34,4 +34,4 @@ namespace reasampler::instrument::map {
 std::optional<std::string> decodeGetProjExtState(int apiReturn,
                                                   const std::string& buffer);
 
-}  // namespace reasampler::instrument::map
+}  // namespace reasampler::instrument::map

src/core/instrument/map/note_entry.cpp

@@ -110,4 +110,4 @@ std::optional<int> parseNoteEntry(const std::string& text) {
     return parseNoteName(s);
 }
 
-}  // namespace reasampler::instrument::map
+}  // namespace reasampler::instrument::map

src/core/instrument/map/note_entry.h

@@ -30,4 +30,4 @@ namespace reasampler::instrument::map {
 // into [0,127]; empty or unparseable input returns nullopt (no change). Pure — no host types.
 std::optional<int> parseNoteEntry(const std::string& text);
 
-}  // namespace reasampler::instrument::map
+}  // namespace reasampler::instrument::map

src/core/instrument/map/trigger_seam.cpp

@@ -24,4 +24,4 @@ std::int64_t fadeFractionToFrames(double fadeFraction, std::int64_t playLength)
     return static_cast<std::int64_t>(fadeFraction * static_cast<double>(playLength) + 0.5);
 }
 
-}  // namespace reasampler::instrument::map
+}  // namespace reasampler::instrument::map

src/core/instrument/map/trigger_seam.h

@@ -48,4 +48,4 @@ double framesToFadeFraction(std::int64_t fadeFrames, std::int64_t playLength);
 // Rounds to nearest integer frame. Returns 0 when playLength == 0.
 std::int64_t fadeFractionToFrames(double fadeFraction, std::int64_t playLength);
 
-}  // namespace reasampler::instrument::map
+}  // namespace reasampler::instrument::map

src/core/instrument/ui/browser_scroll.cpp

@@ -155,4 +155,4 @@ std::vector<int> filterNameIndices(const std::vector<std::string>& names,
     return out;
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/browser_scroll.h

@@ -104,4 +104,4 @@ bool nameMatchesQuery(const std::string& name, const std::string& query);
 std::vector<int> filterNameIndices(const std::vector<std::string>& names,
                                    const std::string& query);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/capture_browser.cpp

@@ -93,4 +93,4 @@ int filterTabHitTest(const BrowserLayout& layout, int tabCount, int x, int y) {
     return -1;
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/capture_browser.h

@@ -89,4 +89,4 @@ Rect filterTabRect(const BrowserLayout& layout, int tabCount, int index);
 // tab strip. Pure.
 int filterTabHitTest(const BrowserLayout& layout, int tabCount, int x, int y);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/curve_popup.cpp

@@ -38,4 +38,4 @@ bool popupOutsideSheet(const CurvePopupLayout& layout, int x, int y) {
     return !contains(layout.sheet, x, y);
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/curve_popup.h

@@ -45,4 +45,4 @@ CurvePopupLayout computeCurvePopup(int w, int h);
 // The shell additionally gates on "no drag in flight" (spec). Pure.
 bool popupOutsideSheet(const CurvePopupLayout& layout, int x, int y);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/editor_geometry.cpp

@@ -159,4 +159,4 @@ bool addZoneHitTest(const KeymapEditorLayout& layout, int x, int y) {
     return contains(layout.addZoneButton, x, y);
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/editor_geometry.h

@@ -139,4 +139,4 @@ ZoneHit zoneHitTest(const KeymapEditorLayout& layout, int zoneCount, int x, int
 // True if (x, y) lands on the "Add Zone" button. Pure.
 bool addZoneHitTest(const KeymapEditorLayout& layout, int x, int y);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/embed_strip.cpp

@@ -83,4 +83,4 @@ Rect levelFillRect(const EmbedLayout& layout, double level) {
     return Rect::ltrb(band.x, band.y, band.x + fillW, band.bottom());
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/embed_strip.h

@@ -73,4 +73,4 @@ int zoneAtPoint(const EmbedLayout& layout, const EmbedZone* zones, int zoneCount
 // (rounded down). level <= 0 -> empty rect; level >= 1 -> the whole band. Pure.
 Rect levelFillRect(const EmbedLayout& layout, double level);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/envelope_edit.cpp

@@ -177,4 +177,4 @@ AmpEnvelope resolveNodeDrag(const AmpEnvelope& grabEnv, EnvNode node, const Rect
     return out;
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/envelope_edit.h

@@ -105,4 +105,4 @@ AmpEnvelope resolveNodeDrag(const AmpEnvelope& grabEnv, EnvNode node, const Rect
                             double totalSeconds, const EnvClampBounds& bounds,
                             int dxPixels, int dyPixels);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/envelope_overlay.cpp

@@ -55,7 +55,6 @@ int levelToY(const Rect& area, double level) {
 
 namespace {
 
-
 EnvVertex vtx(EnvNode node, const Rect& area, double totalSeconds, double t, double level) {
     EnvVertex v;
     v.node = node;
@@ -172,4 +171,4 @@ std::vector<EnvVertex> buildEnvelopePolyline(const AmpEnvelope& env, const Rect&
                                      : triggerPolyline(env, area, totalSeconds);
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/envelope_overlay.h

@@ -226,4 +226,4 @@ int timeToX(const Rect& area, double totalSeconds, double t);
 // and the node hit-test share.
 int levelToY(const Rect& area, double level);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/keyboard_strip.cpp

@@ -146,4 +146,4 @@ int resolveDragNote(const StripLayout& layout, int startNote, int dxPixels) {
     return clampNote(startNote + shift);
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/keyboard_strip.h

@@ -128,4 +128,4 @@ int resolveDragNote(const StripLayout& layout, int startNote, int dxPixels);
 // pastel spectral fill (S-VIEW-7). Pure — no layout required, no host types.
 bool isNaturalKey(int note);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/knob_deck.cpp

@@ -153,4 +153,4 @@ DeckHit hitTestDeck(const DeckLayout& layout, int x, int y) {
     return {};
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/knob_deck.h

@@ -130,4 +130,4 @@ struct DeckHit {
 // Pure — the shell's routing entry point.
 DeckHit hitTestDeck(const DeckLayout& layout, int x, int y);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/param_slider.cpp

@@ -99,7 +99,6 @@ double normDeg(double deg) {
     return deg;
 }
 
-
 }  // namespace
 
 KnobGeometry computeKnob(const Rect& cell) {
@@ -157,4 +156,4 @@ int controlAtPoint(const std::vector<ControlRow>& rows, int x, int y) {
     return -1;
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/param_slider.h

@@ -177,4 +177,4 @@ double knobDragValue(double startValue, int dyPixels,
 // toggleSegmentHitTest / knobDragValue over the ensuing drag) and commits.
 int controlAtPoint(const std::vector<ControlRow>& rows, int x, int y);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/waveform_view.cpp

@@ -96,4 +96,4 @@ std::int64_t nearestZeroCrossing(const AudioSample* pcm, std::int64_t frames,
     return t;  // no sign change in the whole buffer -> keep the raw (clamped) target
 }
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui

src/core/instrument/ui/waveform_view.h

@@ -82,4 +82,4 @@ std::int64_t resolveDragFrame(const Rect& area, std::int64_t frameCount, std::in
 std::int64_t nearestZeroCrossing(const AudioSample* pcm, std::int64_t frames,
                                  std::int64_t target);
 
-}  // namespace reasampler::instrument::ui
+}  // namespace reasampler::instrument::ui