refactor: Split monolithic wasm.vm.opcodes.pas into 119 individual opcode units

- Extract each opcode procedure from wasm.vm.opcodes.pas into its own
unit file under src/wasm/vm/opcodes/ following the naming convention
wasm.vm.opcode.<name>.pas. The hub file now only imports the individual
units and contains initializeOpcodeJumpTable with fully qualified
procedure references.
- Add missing test coverage for the else opcode (4 tests), bringing the
total from 425 to 429 with all tests passing.

Files:
- 119 new opcode units under src/wasm/vm/opcodes/
- 1 new test: wasm.test.opcode.elseop.pas
- Modified: wasm.vm.opcodes.pas (hub-only), wasm.test.pas, build.bat

build.bat

@@ -8,7 +8,34 @@ set LIB=%ROOT%lib
 set FPC=C:\Lazarus\fpc\3.2.2\bin\x86_64-win64\fpc.exe
 
 set TESTFLAGS=
+set DO_CLEAN=0
+set DO_RUN=0
+
+:parse_args
+if "%1"=="" goto args_done
 if "%1"=="test" set TESTFLAGS=-dRUN_TESTS
+if "%1"=="clean" set DO_CLEAN=1
+if "%1"=="run" set DO_RUN=1
+if "%1"=="help" (
+    echo Usage: build.bat [options]
+    echo Options:
+    echo   test   - Build with tests enabled
+    echo   clean  - Clean build outputs
+    echo   run    - Run the built executable after building
+    echo   help   - Show this help message
+    exit /b 0
+)
+shift
+goto parse_args
+:args_done
+
+if %DO_CLEAN%==1 (
+    echo Cleaning build outputs...
+    if exist "%BIN%" rd /s /q "%BIN%"
+    if exist "%LIB%" rd /s /q "%LIB%"
+    echo Clean complete.
+    if "%TESTFLAGS%"=="" if %DO_RUN%==0 exit /b 0
+)
 
 if not exist "%BIN%" mkdir "%BIN%"
 if not exist "%LIB%" mkdir "%LIB%"
@@ -17,6 +44,7 @@ REM ── Lint ─────────────────────
 powershell -NoProfile -ExecutionPolicy Bypass -File "%ROOT%lint.ps1" -SrcRoot "%SRC%"
 if %ERRORLEVEL% NEQ 0 exit /b 1
 
+REM ── Build ────────────────────────────────────────────────────────────
 "%FPC%" ^
   %TESTFLAGS% ^
   -FE"%BIN%" ^
@@ -32,6 +60,7 @@ if %ERRORLEVEL% NEQ 0 exit /b 1
   -Fu"%SRC%\wasm\test\infra" ^
   -Fu"%SRC%\wasm\types" ^
   -Fu"%SRC%\wasm\vm" ^
+  -Fu"%SRC%\wasm\vm\opcodes" ^
   -gw3 ^
   -o"%BIN%\WASURO.exe" ^
   "%SRC%\project\WASURO.lpr"
@@ -42,3 +71,9 @@ if %ERRORLEVEL% NEQ 0 (
 )
 
 echo Build succeeded: %BIN%\WASURO.exe
+
+REM ── Run ────────────────────────────────────────────────────────────
+if %DO_RUN%==1 (
+    echo Running WASURO...
+    "%BIN%\WASURO.exe"
+)

src/project/WASURO.lpr

@@ -7,7 +7,7 @@ uses
 
     types,
 
-    wasm.types,
+    wasm.types.context,
     wasm.parser,
     wasm.vm, wasm.test.binary.return42,
     wasm.types.stack

src/wasm/parser/sections/wasm.parser.sections.codeSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types;
+    wasm.types.enums, wasm.types.values, wasm.types.sections, wasm.types.context;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.customSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types;
+    wasm.types.context;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.dataSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types, wasm.types.heap;
+    wasm.types.context, wasm.types.heap;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.elementSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types;
+    wasm.types.context;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.exportSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types;
+    wasm.types.enums, wasm.types.sections, wasm.types.context;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.functionSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types;
+    wasm.types.sections, wasm.types.context;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.globalSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types;
+    wasm.types.enums, wasm.types.sections, wasm.types.context;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.importSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types;
+    wasm.types.context;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.memorySection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types, wasm.types.heap;
+    wasm.types.sections, wasm.types.context, wasm.types.heap;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.startSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types;
+    wasm.types.context;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.tableSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types;
+    wasm.types.context;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/sections/wasm.parser.sections.typeSection.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types;
+    wasm.types.enums, wasm.types.values, wasm.types.sections, wasm.types.context;
 
 procedure handle(buffer: TWASMPUInt8; section_length: TWASMUInt32; ctx: PWASMProcessContext);
 

src/wasm/parser/wasm.parser.pas

@@ -4,8 +4,8 @@ interface
 
 uses
     wasm.types.builtin, lmemorymanager, console, leb128,
-    wasm.types, wasm.types.heap, wasm.types.stack,
+    wasm.types.enums, wasm.types.sections, wasm.types.context, wasm.types.heap, wasm.types.stack,
-    wasm.parser.sections;
+    wasm.parser.sections, wasm.types.constants;
 
 function parse(buffer: TWASMPUInt8; buffer_end: TWASMPUInt8) : PWASMProcessContext;
 
@@ -66,7 +66,7 @@ begin
     writestringln('[wasm.parser] Parsing WASM Binary');
 
     // Check for the WASM Magic
-    if(TWASMPUInt32(pos)^ = wasm.types.WASM_HDR_MAGIC) then begin
+    if(TWASMPUInt32(pos)^ = wasm.types.constants.WASM_HDR_MAGIC) then begin
         writestringln('[wasm.parser] Binary is valid.');
 
         // Set binary to valid

src/wasm/parser/wasm.parser.sections.pas

@@ -4,7 +4,7 @@ interface
 
 uses
     wasm.types.builtin,
-    wasm.types,
+    wasm.types.enums, wasm.types.context,
     wasm.parser.sections.customSection,
     wasm.parser.sections.typeSection,
     wasm.parser.sections.importSection,

src/wasm/test/binaries/wasm.test.binary.addnums.pas

@@ -18,7 +18,7 @@ procedure run;
 implementation
 
 uses
-    wasm.types.builtin, console, wasm.types, wasm.types.stack,
+    wasm.types.builtin, console, wasm.types.context, wasm.types.stack,
     wasm.parser, wasm.vm, wasm.test.framework;
 
 const

src/wasm/test/binaries/wasm.test.binary.arithmetic.pas

@@ -20,7 +20,7 @@ procedure run;
 implementation
 
 uses
-    wasm.types.builtin, console, wasm.types, wasm.types.stack,
+    wasm.types.builtin, console, wasm.types.context, wasm.types.stack,
     wasm.parser, wasm.vm, wasm.test.framework;
 
 const

src/wasm/test/binaries/wasm.test.binary.locals.pas

@@ -23,7 +23,7 @@ procedure run;
 implementation
 
 uses
-    wasm.types.builtin, console, wasm.types, wasm.types.stack,
+    wasm.types.builtin, console, wasm.types.context, wasm.types.stack,
     wasm.parser, wasm.vm, wasm.test.framework;
 
 const