fix(ci): update golangci-lint config for v2.3.0 compatibility

- Use skip-dirs instead of exclude-dirs in run section
- Remove unsupported linters-settings section
- Update to golangci-lint v2.3.0
- Keep codecov files and slug parameters as correct

Author: jackspirou

.github/workflows/ci.yaml

@@ -31,7 +31,7 @@ jobs:
       - name: Run golangci-lint
         uses: golangci/golangci-lint-action@v8
         with:
-          version: latest
+          version: v2.3.0
           args: --timeout=5m
 
   test:

.golangci.yml

@@ -4,24 +4,16 @@ version: "2"
 run:
   timeout: 5m
   tests: false
-  # Skip generated files
-  skip-files:
-    - ".*\\.pb\\.go$"
-    - ".*\\.gen\\.go$"
-
-issues:
-  # Exclude directories from all linting
-  exclude-dirs:
+  # Skip these directories entirely
+  skip-dirs:
     - scripts
     - vendor
     - testdata
-  
+
+issues:
   # Maximum issues to report
   max-issues-per-linter: 50
   max-same-issues: 10
-  
-  # Don't hide multiple issues from the same file
-  exclude-use-default: false
 
 linters:
   enable:
@@ -57,74 +49,4 @@ linters:
     - gochecknoglobals # We use some globals
     - gochecknoinits   # Init functions are sometimes needed
     - gomnd        # Magic numbers are sometimes clear in context
-    - wsl          # Too opinionated about whitespace
-
-linters-settings:
-  govet:
-    check-shadowing: true
-    enable-all: true
-  
-  errcheck:
-    check-type-assertions: true
-    check-blank: true
-    exclude-functions:
-      - (io.Closer).Close
-      - (net/http.ResponseWriter).Write
-  
-  staticcheck:
-    checks: ["all"]
-  
-  misspell:
-    locale: US
-  
-  goconst:
-    min-len: 3
-    min-occurrences: 3
-  
-  gocyclo:
-    min-complexity: 15
-  
-  dupl:
-    threshold: 100
-  
-  gosec:
-    excludes:
-      - G204 # Subprocess launched with variable
-      - G304 # File path provided as taint input
-  
-  revive:
-    confidence: 0.8
-    rules:
-      - name: blank-imports
-      - name: context-as-argument
-      - name: context-keys-type
-      - name: dot-imports
-      - name: error-return
-      - name: error-strings
-      - name: error-naming
-      - name: exported
-      - name: if-return
-      - name: increment-decrement
-      - name: var-naming
-      - name: var-declaration
-      - name: package-comments
-      - name: range
-      - name: receiver-naming
-      - name: time-naming
-      - name: unexported-return
-      - name: indent-error-flow
-      - name: errorf
-  
-  godot:
-    scope: all
-    exclude:
-      - "^fixme:"
-      - "^todo:"
-  
-  goimports:
-    local-prefixes: github.com/agentstation/tokenizer
-  
-  prealloc:
-    simple: true
-    range-loops: true
-    for-loops: true
+    - wsl          # Too opinionated about whitespace