feat: 重构 pkg/ast/provider 模块，优化代码组织逻辑和功能实现

## 主要改进

### 架构重构
- 将单体 provider.go 拆分为多个专门的模块文件
- 实现了清晰的职责分离和模块化设计
- 遵循 SOLID 原则，提高代码可维护性

### 新增功能
- **验证规则系统**: 实现了完整的 provider 验证框架
- **报告生成器**: 支持多种格式的验证报告 (JSON/HTML/Markdown/Text)
- **解析器优化**: 重新设计了解析流程，提高性能和可扩展性
- **错误处理**: 增强了错误处理和诊断能力

### 修复关键 Bug
- 修复 @provider(job) 注解缺失 __job 注入参数的问题
- 统一了 job 和 cronjob 模式的处理逻辑
- 确保了 provider 生成的正确性和一致性

### 代码质量提升
- 添加了完整的测试套件
- 引入了 golangci-lint 代码质量检查
- 优化了代码格式和结构
- 增加了详细的文档和规范

### 文件结构优化
```
pkg/ast/provider/
├── types.go              # 类型定义
├── parser.go             # 解析器实现
├── validator.go          # 验证规则
├── report_generator.go   # 报告生成
├── renderer.go           # 渲染器
├── comment_parser.go     # 注解解析
├── modes.go             # 模式定义
├── errors.go            # 错误处理
└── validator_test.go    # 测试文件
```

### 兼容性
- 保持向后兼容性
- 支持现有的所有 provider 模式
- 优化了 API 设计和用户体验

This completes the implementation of T025-T029 tasks following TDD principles,
including validation rules implementation and critical bug fixes.

.golangci.yml

@@ -0,0 +1,134 @@
+# GolangCI-Lint configuration for pkg/ast/provider package
+run:
+  timeout: 5m
+  modules-download-mode: readonly
+  go: '1.24'
+  build-tags:
+    - go1.24
+
+linters:
+  disable-all: true
+  enable:
+    # Default linters
+    - errcheck
+    - gosimple
+    - govet
+    - ineffassign
+    - staticcheck
+    - typecheck
+    - unused
+
+    # Additional recommended linters
+    - gofmt
+    - goimports
+    - misspell
+    - unconvert
+    - unparam
+    - nakedret
+    - prealloc
+    - gocritic
+    - bodyclose
+    - depguard
+    - dogsled
+    - dupl
+    - errname
+    - errorlint
+    - exportloopref
+    - forbidigo
+    - forcetypeassert
+    - gci
+    - gocyclo
+    - godot
+    - goerr113
+    - gomnd
+    - gomodguard
+    - goprintffuncname
+    - gosec
+    - importas
+    - makezero
+    - nolintlint
+    - paralleltest
+    - predeclared
+    - revive
+    - tenv
+    - testpackage
+    - thelper
+    - tparallel
+    - wastedassign
+    - whitespace
+
+linters-settings:
+  gofmt:
+    simplify: true
+
+  goimports:
+    local-prefixes: go.ipao.vip/atomctl/v2
+
+  gocyclo:
+    min-complexity: 15
+
+  gomnd:
+    settings:
+      mnd:
+        # The next line enables the detection of `00000000` magic numbers
+        checks: argument,case,condition,operation,return,assign
+
+  gci:
+    sections:
+      - standard
+      - default
+      - prefix(go.ipao.vip/atomctl/v2)
+
+  revive:
+    rules:
+      - name: exported
+        disabled: false
+
+  unparam:
+    check-exported: false
+
+  dupl:
+    threshold: 100
+
+  gosec:
+    excludes:
+      - G115  # Potential integer overflow when converting between integer types
+      - G404  # Use of weak random number generator (math/rand instead of crypto/rand)
+      - G501  # Blocklisted import crypto/md5: weak cryptographic primitive
+      - G502  # Blocklisted import crypto/sha1: weak cryptographic primitive
+      - G505  # Blocklisted import crypto/des: weak cryptographic primitive
+      - G506  # Blocklisted import crypto/rc4: weak cryptographic primitive
+
+issues:
+  exclude-use-default: false
+  exclude-rules:
+    - path: _test\.go
+      linters:
+        - gomnd
+        - unparam
+        - dupl
+        - gosec
+        - bodyclose
+        - forcetypeassert
+        - makezero
+    - path: tests/
+      linters:
+        - gomnd
+        - unparam
+        - dupl
+        - gosec
+        - bodyclose
+        - forcetypeassert
+        - makezero
+    - path: '.*\.pb\.go$'
+      linters:
+        - all
+    - text: "weak cryptographic primitive"
+      linters:
+        - gosec
+
+output:
+  format: colored-line-number
+  print-issued-lines: true
+  print-linter-name: true
+  uniq-by-line: true