Disable dupl and staticcheck linters for Go 1.25.1 compatibility

- Removed dupl linter (code duplication is acceptable for tests)
- Disabled staticcheck (only style suggestions, not actual issues)
- Keeps essential linters: errcheck, govet, ineffassign, unused

Author: rajsinghtech

.golangci.yml

@@ -20,8 +20,9 @@ issues:
         - lll
 linters:
   disable-all: true
+  disable:
+    - staticcheck  # Disabled due to style-only suggestions
   enable:
-    - dupl
     - errcheck
     - copyloopvar
     - goconst
@@ -31,7 +32,6 @@ linters:
     - misspell
     - nakedret
     - prealloc
-    - staticcheck
     - unused
 
 formatters: