.golangci: ignore tests for goconst, raise occurrence threshold

Test fixtures repeat strings (IPs, tags, hostnames, user/email
names) by their nature; extracting each into a named constant
adds indirection without adding clarity. Keep goconst strict on
production code, off on tests.

  ignore-tests: true       drop test-fixture noise entirely
  min-occurrences: 5       raise from default 3 to filter
                           "happens thrice" non-vocabulary cases
  min-len: 6               skip short literals like "set", "get",
                           "new" that read better at call sites

.golangci.yaml

@@ -30,6 +30,17 @@ linters:
     - wrapcheck
     - wsl
   settings:
+    goconst:
+      # Test fixtures repeat strings (IPs, tags, hostnames) by their
+      # nature; extracting them obscures the test rather than helping.
+      # Production code stays strict.
+      ignore-tests: true
+      # Default is 3. Bump so "happens thrice" cases that are not part
+      # of a shared vocabulary do not get extracted.
+      min-occurrences: 5
+      # Default is 3. Short literals ("set", "get", "new") read better
+      # at call sites than behind a named constant.
+      min-len: 6
     forbidigo:
       forbid:
         # Forbid time.Sleep everywhere with context-appropriate alternatives