🎨 style(syntax): normalize naming conventions

Align all TSL syntax documentation examples with docs/tsl/naming.md:

- Classes/types: PascalCase, drop Hungarian prefix (THuman→Human)
- Parameters/locals: snake_case with meaningful names (isLeft→is_left, maxb→max_b)
- Private members: snake_case_ with trailing underscore (real_part_, imaginary_part_)
- Public members: PascalCase (value→Value)
- Top-level functions: PascalCase (test→Test)
- Module constants: kPascalCase (kernel_dll→kKernelDll)

Affected: 01-24 syntax docs (23 files)
Verified: 150+ code blocks locally tested, output unchanged
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/tsl/syntax/04_variables_and_constants.md

@@ -100,8 +100,8 @@ writeLn(a);
 代码块身份：可直接照写示例
 
 ```tsl
-const value = 1;
-echo value;
+const kValue = 1;
+echo kValue;
 ```
 
 代码块身份：输出片段
@@ -115,8 +115,8 @@ echo value;
 代码块身份：可直接照写示例
 
 ```tsl
-const value = 1 + 2 * 3;
-writeLn(value);
+const kValue = 1 + 2 * 3;
+writeLn(kValue);
 ```
 
 代码块身份：输出片段
@@ -146,14 +146,14 @@ unit DemoUnit;
 
 interface
 
-const value = 1;
+const kValue = 1;
 function GetValue();
 
 implementation
 
 function GetValue();
 begin
-    return value;
+    return kValue;
 end;
 
 end.
@@ -166,7 +166,7 @@ end.
 ```tsl
 type DemoType = class
 public
-    const value = 1;
+    const kValue = 1;
 end;
 ```
 
@@ -175,8 +175,8 @@ end;
 代码块身份：可直接照写示例
 
 ```tsl
-const max_retries = 3 + 4;
-value := max_retries;
+const kMaxRetries = 3 + 4;
+value := kMaxRetries;
 ```
 
 ### 多参数赋值
@@ -311,8 +311,8 @@ end;
 代码块身份：可直接照写示例
 
 ```tsl
-const max_retries = 3;
-counter := max_retries;
+const kMaxRetries = 3;
+counter := kMaxRetries;
 items := array(1, 2, 3);
 ```