refactor: remove unused code and fix documentation

- Remove CorrelationKeyFull() alias, use CorrelationKey() everywhere
- Remove duplicate TimeProvider interface from ports/source.go
- Remove unused time import from ports/source.go
- Update README.md: replace ./build.sh and ./test.sh with make commands
- Update RPM package names in README to match current version (1.0.3)

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

internal/ports/source.go

@@ -2,7 +2,6 @@ package ports
 
 import (
 	"context"
-	"time"
 
 	"github.com/logcorrelator/logcorrelator/internal/domain"
 )
@@ -35,11 +34,6 @@ type CorrelatedLogSink interface {
 	Name() string
 }
 
-// TimeProvider abstracts time for testability.
-type TimeProvider interface {
-	Now() time.Time
-}
-
 // CorrelationProcessor defines the interface for the correlation service.
 // This allows for easier testing and alternative implementations.
 type CorrelationProcessor interface {