refactor(compiler): restructure compiler architecture and update entr…

…y hashing

- Added `//go:build experimental` and `+build experimental` tags to `mo_compiler.go`.
- Refactored `compiler` namespace in `structure.puml`:
  - Replaced `Compiler` class with an interface.
  - Introduced `MoCompiler` and `PoCompiler` classes to separate responsibilities.
  - Updated relationships and structure to reflect new design.
- Updated `Entry.Hash()` method in `entry.go` to include a comment clarifying the EOT byte usage.
- Updated binary files (`structure.png`) to reflect changes in the UML diagrams.

pkg/po/compiler/mo_compiler.go

@@ -1,3 +1,6 @@
+//go:build experimental
+// +build experimental
+
 package compiler
 
 import (

pkg/po/compiler/structure.puml

@@ -1,17 +1,10 @@
 @startuml
 namespace compiler {
-    class Compiler << (S,Aquamarine) >> {
-        + File *po.File
-        + Config Config
-
-        - applyOptions(opts ...Option) 
-        - formatHeader() string
-        - formatEntry(t po.Entry) string
-
-        + ToWriter(w io.Writer, options ...Option) error
-        + ToFile(f string, options ...Option) error
-        + ToString(options ...Option) string
-        + ToBytes(options ...Option) []byte
+    interface Compiler  {
+        + ToWriter( io.Writer,  ...Option) error
+        + ToFile( string,  ...Option) error
+        + ToString( ...Option) string
+        + ToBytes( ...Option) []byte
 
     }
     class Config << (S,Aquamarine) >> {
@@ -31,13 +24,36 @@ namespace compiler {
 
         + Validate() error
 
+    }
+    class MoCompiler << (S,Aquamarine) >> {
+        + File *po.File
+        + Config Config
+
+        - applyOptions(opts ...Option) 
+        - createBinary() 
+
+    }
+    class PoCompiler << (S,Aquamarine) >> {
+        + File *po.File
+        + Config Config
+
+        - applyOptions(opts ...Option) 
+        - formatHeader() string
+        - formatEntry(t po.Entry) string
+
+        + ToWriter(w io.Writer, options ...Option) error
+        + ToFile(f string, options ...Option) error
+        + ToString(options ...Option) string
+        + ToBytes(options ...Option) []byte
+
     }
     class compiler.LocationMode << (T, #FF7700) >>  {
     }
     class compiler.Option << (T, #FF7700) >>  {
     }
 }
 
+"compiler.Compiler" <|-- "compiler.PoCompiler"
 
 "__builtin__.string" #.. "compiler.LocationMode"
 "compiler.<font color=blue>func</font>(*Config) " #.. "compiler.Option"

pkg/po/entry.go

@@ -37,7 +37,7 @@ func (e Entry) Hash() uint {
 
 	if e.Context != "" {
 		b.WriteString(e.Context)
-		b.WriteByte('4')
+		b.WriteByte('4') // EOT byte.
 	}
 	b.WriteString(e.ID)
 

pkg/po/structure.puml

@@ -25,6 +25,7 @@ namespace po {
         + Str string
         + Locations []Location
 
+        + Hash() uint
         + String() string
 
     }