docs(user-input): trim verbose comments in selection logic

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/home/components/user-input/chip-selection.ts

@@ -23,17 +23,13 @@ export interface Selection {
 /**
  * Snaps a selection so no edge sits inside a chip.
  *
- * - **Collapsed caret inside a chip** → nearest chip edge (so the caret can't
- *   rest mid-chip).
- * - **Ranged selection** → each edge inside a chip snaps to a chip boundary,
- *   never collapsing the range. Which boundary depends on the gesture:
- *   - A *lone moved edge* (keyboard extend/shrink, drag) snaps in its direction
- *     of travel — growing absorbs the chip, shrinking releases it.
- *   - A *fresh selection* (double-click, select-all) expands outward to include
- *     touched chips whole. A fresh selection that happens to share one edge with
- *     `prev` (e.g. select-all from a caret already at 0) takes the single-edge
- *     path, but a grown edge expands outward there too — the paths differ only
- *     for a *shrinking* edge, which implies a genuine single-edge gesture.
+ * - **Collapsed caret inside a chip** → nearest chip edge.
+ * - **Ranged selection** → each edge inside a chip snaps to a boundary without
+ *   collapsing the range. A lone moved edge (keyboard extend/shrink, drag) snaps
+ *   in its direction of travel — growing absorbs the chip, shrinking releases
+ *   it; a fresh selection (double-click, select-all) expands outward. The two
+ *   paths differ only for a shrinking edge, so the gesture inference is safe
+ *   even when a fresh selection happens to share an edge with `prev`.
  *
  * @param sel - The observed selection.
  * @param prev - The previously observed selection, used to infer which edge moved.

apps/sim/app/workspace/[workspaceId]/home/components/user-input/user-input.tsx

@@ -1068,8 +1068,6 @@ export const UserInput = forwardRef<UserInputHandle, UserInputProps>(function Us
     if (!textarea) return
     const start = textarea.selectionStart ?? 0
     const end = textarea.selectionEnd ?? 0
-    // `selectionchange` fires before this `select` handler, so prevSelectionRef
-    // already holds the selection from just before this change.
     const prev = prevSelectionRef.current
 
     // Adopt value changes that bypassed React's change tracking (browser
@@ -1086,10 +1084,9 @@ export const UserInput = forwardRef<UserInputHandle, UserInputProps>(function Us
     const snapped = snapSelectionToChips({ start, end }, prev, startChip, endChip)
 
     if (snapped.start !== start || snapped.end !== end) {
-      // Deferred so in-flight click/drag processing can't override the write;
-      // bails if the selection moved again first (a newer event supersedes it).
-      // The write re-fires this handler, which then syncs the menus below.
-      // Direction is read at apply time so it's never stale.
+      // Deferred so in-flight click/drag processing can't override the write,
+      // and bailed if the selection moved again first. The write re-fires this
+      // handler, which then syncs the menus.
       setTimeout(() => {
         if (textarea.selectionStart !== start || textarea.selectionEnd !== end) return
         textarea.setSelectionRange(