sweep remaining analyze infos to zero

Clears the 19 misc lint hits left after the test_app print sweep
+ libc.dart suppression. By rule:

- `withOpacity(α)` → `withValues(alpha: α)` (deprecated_member_use)
  in `painter.dart:187` and `terminal_view.dart:318`.
- `Pointer.elementAt(n)` → `Pointer + n` (deprecated_member_use)
  in `native_pty.dart:306` and `session.dart:187`.
- Brace single-statement for/if bodies in `native_pty.dart`
  (×3) and `decisions_view.dart` (curly_braces_in_flow_control_
  structures).
- `IsolateClient` and `InProcessClient` constructors switched to
  `super.log` / `super.events` parameters (use_super_parameters);
  associated unused imports of `kernel/src/log.dart` and
  `kernel/src/events/bus.dart` removed in the same files.
- `InProcessClient._dispatcher` field + getter/setter pair folded
  into a single mutable public `dispatcher` field
  (unnecessary_getters_setters).
- `_buildDispatcher` local in `lib/main.dart` renamed to
  `buildDispatcher` (no_leading_underscores_for_local_identifiers).
- `_onTapDown(_)` in `terminal_view.dart` typed as
  `TapDownDetails _` (strict_top_level_inference).
- `operator []=(...)` in `circular_buffer.dart` given an explicit
  `void` return type (strict_top_level_inference).
- `CustomKeyboardListener` and `TerminalGestureDetector` callsites
  reordered so `child:` lands last (sort_child_properties_last).
- `CustomTextEdit` constructor declared `const`
  (prefer_const_constructors_in_immutables).
- `LinkedHashMap<K, V>()` in `paragraph_cache.dart` collapsed to a
  `<K, V>{}` literal (prefer_collection_literals); the now-unused
  `dart:collection` import dropped.

Project analyze: 19 → 0 issues. `make test` stays green; coverage
unchanged at 52.72%.

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

lib/src/pty/native_pty.dart

@@ -216,9 +216,13 @@ class NativePty {
     ffi.Pointer ws,
   ) {
     malloc.free(shell);
-    for (var i = 0; i < argc; i++) malloc.free(argv[i]);
+    for (var i = 0; i < argc; i++) {
+      malloc.free(argv[i]);
+    }
     malloc.free(argv);
-    for (var i = 0; i < envc; i++) malloc.free(envp[i]);
+    for (var i = 0; i < envc; i++) {
+      malloc.free(envp[i]);
+    }
     malloc.free(envp);
     malloc.free(wd);
     calloc.free(fdOut);
@@ -298,12 +302,14 @@ class NativePty {
     if (_dead || bytes.isEmpty) return 0;
     final buf = malloc<ffi.Uint8>(bytes.length);
     try {
-      for (var i = 0; i < bytes.length; i++) buf[i] = bytes[i];
+      for (var i = 0; i < bytes.length; i++) {
+        buf[i] = bytes[i];
+      }
       var written = 0;
       while (written < bytes.length) {
         final n = _nativeWrite(
           _fd,
-          buf.elementAt(written).cast(),
+          (buf + written).cast(),
           bytes.length - written,
         );
         if (n < 0) {

lib/src/pty/session.dart

@@ -184,7 +184,7 @@ class PtySession {
       while (written < bytes.length) {
         final n = libc.write(
           _masterFd,
-          buf.elementAt(written),
+          buf + written,
           bytes.length - written,
         );
         if (n < 0) {

lib/src/terminal/src/terminal_view.dart

@@ -278,12 +278,12 @@ class TerminalViewState extends State<TerminalView> {
     } else if (!widget.readOnly) {
       // Only listen for key input from a hardware keyboard.
       child = CustomKeyboardListener(
-        child: child,
         focusNode: _focusNode,
         autofocus: widget.autofocus,
         onInsert: _onInsert,
         onComposing: _onComposing,
         onKeyEvent: _handleKeyEvent,
+        child: child,
       );
     }
 
@@ -315,7 +315,7 @@ class TerminalViewState extends State<TerminalView> {
     );
 
     child = Container(
-      color: widget.theme.background.withOpacity(widget.backgroundOpacity),
+      color: widget.theme.background.withValues(alpha: widget.backgroundOpacity),
       padding: widget.padding,
       child: child,
     );
@@ -347,7 +347,7 @@ class TerminalViewState extends State<TerminalView> {
     widget.onTapUp?.call(details, offset);
   }
 
-  void _onTapDown(_) {
+  void _onTapDown(TapDownDetails _) {
     if (_controller.selection != null) {
       _controller.clearSelection();
     } else {

lib/src/terminal/src/ui/custom_text_edit.dart

@@ -5,7 +5,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 
 class CustomTextEdit extends StatefulWidget {
-  CustomTextEdit({
+  const CustomTextEdit({
     super.key,
     required this.child,
     required this.onInsert,

lib/src/terminal/src/ui/gesture/gesture_handler.dart

@@ -64,7 +64,6 @@ class _TerminalGestureHandlerState extends State<TerminalGestureHandler> {
   @override
   Widget build(BuildContext context) {
     return TerminalGestureDetector(
-      child: widget.child,
       onTapUp: widget.onTapUp,
       onSingleTapUp: onSingleTapUp,
       onTapDown: onTapDown,
@@ -78,6 +77,7 @@ class _TerminalGestureHandlerState extends State<TerminalGestureHandler> {
       onDragStart: onDragStart,
       onDragUpdate: onDragUpdate,
       onDoubleTapDown: onDoubleTapDown,
+      child: widget.child,
     );
   }
 

lib/src/terminal/src/ui/painter.dart

@@ -184,7 +184,7 @@ class TerminalPainter {
       var color = cellFlags & CellFlags.inverse == 0 ? resolveForegroundColor(cellData.foreground) : resolveBackgroundColor(cellData.background);
 
       if (cellData.flags & CellFlags.faint != 0) {
-        color = color.withOpacity(0.5);
+        color = color.withValues(alpha: 0.5);
       }
 
       final style = _textStyle.toTextStyle(

lib/src/terminal/src/ui/paragraph_cache.dart

@@ -1,6 +1,5 @@
 // Based on xterm.dart v4.0.0 by xuty (MIT). See LICENSE in this directory.
 
-import 'dart:collection';
 import 'dart:ui';
 
 import 'package:flutter/widgets.dart';
@@ -8,7 +7,7 @@ import 'package:flutter/widgets.dart';
 class _LruCache<K, V> {
   _LruCache(this._maxSize);
   final int _maxSize;
-  final _map = LinkedHashMap<K, V>();
+  final _map = <K, V>{};
 
   V? operator [](K key) {
     final value = _map.remove(key);

lib/src/terminal/src/utils/circular_buffer.dart

@@ -108,7 +108,7 @@ class IndexAwareCircularBuffer<T extends IndexedItem> {
 
   /// Sets the element at the specified [index] in the list. Throws if the
   /// index is out of bounds.
-  operator []=(int index, T value) {
+  void operator []=(int index, T value) {
     RangeError.checkValueInInterval(index, 0, length - 1, 'index');
     _adoptChild(index, value);
   }