Refine keymap descriptions for clarity and consistency

Updated keymap descriptions across various plugins to include
specific prefixes for better identification and organization.

test-diagnostics.php

@@ -1,8 +1,9 @@
 <?php
+
 /**
  * Test file for PHP LSP diagnostics
  * Tests error, warning, info, and hint virtual text colors
- * 
+ *
  * Note: Configure Intelephense to show different diagnostic levels:
  * - diagnostics.undefinedSymbols = true (errors)
  * - diagnostics.undefinedVariables = true (warnings)
@@ -11,10 +12,10 @@
 
 // Define some valid functions and variables first to avoid cascading errors
 function validFunction(): void {
-    echo "This is valid\n";
+	echo "This is valid\n";
 }
 
-$definedVariable = "I exist";
+$definedVariable = 'I exist';
 
 // ERROR: Undefined function
 someUndefinedFunction();
@@ -23,26 +24,26 @@ someUndefinedFunction();
 echo $completelyUndefined;
 
 // WARNING/HINT: Unused variable (depends on Intelephense config)
-$unused = "Never used anywhere";
+$unused = 'Never used anywhere';
 
 // Valid code to separate errors
 validFunction();
 
 // ERROR: Wrong number of arguments
-function requiresTwoArgs(string $a, string $b): void {
-    echo "$a $b\n";
+function requiresTwoArgs( string $a, string $b ): void {
+	echo "$a $b\n";
 }
-requiresTwoArgs("only one");  // Missing second argument
+requiresTwoArgs( 'only one' );  // Missing second argument
 
 // ERROR: Type mismatch
-function expectsString(string $param): void {
-    echo $param;
+function expectsString( string $param ): void {
+	echo $param;
 }
-expectsString(123);  // Passing int to string parameter
+expectsString( 123 );  // Passing int to string parameter
 
 // WARNING: Variable might not be defined in all code paths
-if (rand(0, 1)) {
-    $maybeUndefined = "sometimes defined";
+if ( rand( 0, 1 ) ) {
+	$maybeUndefined = 'sometimes defined';
 }
 // Commenting out to reduce errors: echo $maybeUndefined;
 
@@ -50,21 +51,20 @@ if (rand(0, 1)) {
 echo $definedVariable . "\n";
 
 // ERROR: Calling method on non-object
-$notAnObject = "string";
+$notAnObject = 'string';
 $notAnObject->someMethod();
 
 // ERROR: Invalid array access (multiple levels)
-$emptyArray = [];
+$emptyArray = array();
 echo $emptyArray['key']['nested']['deep'];
 
 // Valid function call
-requiresTwoArgs("hello", "world");
+requiresTwoArgs( 'hello', 'world' );
 
 // HINT/WARNING: Unreachable code (some configs)
 function hasDeadCode(): string {
-    return "done";
-    echo "This is unreachable";  // Dead code
+	return 'done';
+	echo 'This is unreachable';  // Dead code.
 }
 
 echo "Test complete!\n";
-