Initial release: Go Jdenticon library v0.1.0

- Core library with SVG and PNG generation
- CLI tool with generate and batch commands
- Cross-platform path handling for Windows compatibility
- Comprehensive test suite with integration tests

.golangci.yml

@@ -0,0 +1,153 @@
+run:
+  timeout: 5m
+  tests: true
+  modules-download-mode: readonly
+
+linters-settings:
+  errcheck:
+    check-type-assertions: false
+    check-blank: false
+    exclude-functions:
+      - (io.Closer).Close
+      - (*github.com/spf13/pflag.FlagSet).GetString
+      - (*github.com/spf13/pflag.FlagSet).GetInt
+      - (*github.com/spf13/pflag.FlagSet).GetBool
+      - (github.com/spf13/viper).BindPFlag
+      - (*github.com/spf13/cobra.Command).MarkFlagRequired
+      - (*github.com/spf13/cobra.Command).RegisterFlagCompletionFunc
+
+  gocyclo:
+    min-complexity: 30
+
+  funlen:
+    lines: 100
+    statements: 60
+
+  govet:
+    enable-all: false
+    enable:
+      - assign
+      - atomic
+      - bools
+      - buildtag
+      - copylocks
+      - httpresponse
+      - loopclosure
+      - lostcancel
+      - nilfunc
+      - printf
+      - shadow
+      - shift
+      - unreachable
+      - unusedresult
+
+  misspell:
+    locale: US
+
+  staticcheck:
+    checks: ["all", "-SA4003"]
+
+  lll:
+    line-length: 140
+
+  goconst:
+    min-len: 3
+    min-occurrences: 5
+
+  revive:
+    rules:
+      - name: var-naming
+        disabled: true
+      - name: unused-parameter
+        disabled: true
+      - name: redefines-builtin-id
+        disabled: true
+
+  gosec:
+    excludes:
+      - G115  # integer overflow conversion - we handle this safely
+      - G306  # WriteFile permissions - public output files are fine
+
+linters:
+  enable:
+    - bodyclose
+    - dogsled
+    - errcheck
+    - goconst
+    - gocritic
+    - gocyclo
+    - gofmt
+    - goimports
+    - gosec
+    - gosimple
+    - govet
+    - ineffassign
+    - misspell
+    - nakedret
+    - noctx
+    - nolintlint
+    - revive
+    - staticcheck
+    - typecheck
+    - unconvert
+    - unparam
+    - unused
+    - whitespace
+
+  disable:
+    - depguard
+    - funlen
+    - gochecknoinits
+    - lll
+    - prealloc
+
+issues:
+  exclude-rules:
+    - path: _test\.go
+      linters:
+        - gocyclo
+        - errcheck
+        - dupl
+        - gosec
+        - funlen
+        - goconst
+
+    - path: cmd/
+      linters:
+        - gochecknoinits
+
+    - text: "weak cryptographic primitive"
+      linters:
+        - gosec
+
+    - path: example_
+      linters:
+        - lll
+
+    # Allow unlambda in cobra command setup
+    - text: "unlambda"
+      linters:
+        - gocritic
+
+    # Allow if-else chains in complex validation logic
+    - text: "ifElseChain"
+      linters:
+        - gocritic
+
+    # Allow elseif suggestions
+    - text: "elseif"
+      linters:
+        - gocritic
+
+    # Exclude appendAssign in specific cases
+    - text: "appendAssign"
+      linters:
+        - gocritic
+
+    # Allow assignOp suggestions
+    - text: "assignOp"
+      linters:
+        - gocritic
+
+  max-issues-per-linter: 0
+  max-same-issues: 0