refactor: make receiver types consistent per type (pointer receivers)

fileRankHeap Len/Less/Swap converted to pointer receivers to match
Push/Pop; bubbleChart HasNodes and AnimationState Settled converted
to pointer receivers to match all other methods on their types.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

3 files changed, 10 insertions, 10 deletions

diff --git a/internal/statsengine/filerank.go b/internal/statsengine/filerank.go
index a397381..79213ed 100644
--- a/internal/statsengine/filerank.go
+++ b/internal/statsengine/filerank.go
@@ -217,19 +217,19 @@ func betterFileRank(a, b *fileRankStats) bool {
 	return a.path < b.path
 }
 
-func (h fileRankHeap) Len() int {
-	return len(h)
+func (h *fileRankHeap) Len() int {
+	return len(*h)
 }
 
-func (h fileRankHeap) Less(i, j int) bool {
+func (h *fileRankHeap) Less(i, j int) bool {
 	// Keep the worst-ranked item at root for O(log N) eviction.
-	return betterFileRank(h[j], h[i])
+	return betterFileRank((*h)[j], (*h)[i])
 }
 
-func (h fileRankHeap) Swap(i, j int) {
-	h[i], h[j] = h[j], h[i]
-	h[i].heapIndex = i
-	h[j].heapIndex = j
+func (h *fileRankHeap) Swap(i, j int) {
+	(*h)[i], (*h)[j] = (*h)[j], (*h)[i]
+	(*h)[i].heapIndex = i
+	(*h)[j].heapIndex = j
 }
 
 func (h *fileRankHeap) Push(x any) {
diff --git a/internal/tui/dashboard/bubbles.go b/internal/tui/dashboard/bubbles.go
index 8f9b745..96ebea1 100644
--- a/internal/tui/dashboard/bubbles.go
+++ b/internal/tui/dashboard/bubbles.go
@@ -377,7 +377,7 @@ func (c *bubbleChart) MoveSelection(delta int) bool {
 	return true
 }
 
-func (c bubbleChart) HasNodes() bool {
+func (c *bubbleChart) HasNodes() bool {
 	return len(c.nodes) > 0
 }
 
diff --git a/internal/tui/flamegraph/animation.go b/internal/tui/flamegraph/animation.go
index 103d43b..2bebba3 100644
--- a/internal/tui/flamegraph/animation.go
+++ b/internal/tui/flamegraph/animation.go
@@ -126,7 +126,7 @@ func (a *AnimationState) CurrentFrames() []tuiFrame {
 }
 
 // Settled reports whether all active springs are at rest.
-func (a AnimationState) Settled() bool {
+func (a *AnimationState) Settled() bool {
 	return a.settled
 }