chore: add golangci-lint v2 config and fix linter warnings (#46)

- [x] Add golangci-lint v2 configuration with formatters section
- [x] Reorganize linters-settings under linters section
- [x] Replace if-else chains with switch statements for clarity
- [x] Wrap all ignored error returns with `_ = ` pattern
- [x] Add OSC 8 hyperlink helper function for clickable ports
- [x] Add blank line in table styling function
- [x] Remove unnecessary type assertion in test

.golangci.yml

@@ -1,29 +1,31 @@
 # golangci-lint configuration
 # https://golangci-lint.run/usage/configuration/
+version: "2"
 
 run:
   timeout: 5m
   tests: true
 
+formatters:
+  enable:
+    - gofmt
+
 linters:
   enable:
     - errcheck
-    - gosimple
     - govet
     - ineffassign
     - staticcheck
     - unused
     - gosec
     - gocritic
-    - gofmt
-
-linters-settings:
-  govet:
-    enable:
-      - fieldalignment
-  gosec:
-    excludes:
-      - G304 # File path provided as taint input - handled with #nosec comments where needed
-  gocritic:
-    disabled-checks:
-      - ifElseChain # Complex conditionals are clearer as if-else than switch true
+  settings:
+    govet:
+      enable:
+        - fieldalignment
+    gosec:
+      excludes:
+        - G304 # File path provided as taint input - handled with #nosec comments where needed
+    gocritic:
+      disabled-checks:
+        - ifElseChain # Complex conditionals are clearer as if-else than switch true