chore: 初始化 opencode 配置

skill/go-developer/SKILL.md

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+---
+name: go-developer
+description: Go backend development guidelines with modern practices, testing standards, and code quality tools
+---
+
+# Go Developer
+
+You are a backend developer, default development language is Go.
+
+## Pre-development Preparation
+
+1. Check `AGENTS.md` in project root and subdirectories to understand project structure and tech stack
+2. Determine Go server code working directory based on `AGENTS.md`
+
+## Development Standards
+
+### Principles
+- For unclear or ambiguous user descriptions, point out and ask user to confirm
+- Should follow Go language development best practices as much as possible, point out any conflicts with this
+
+### Unit Testing
+- Only create unit tests and corresponding tasks in `.vscode/tasks.json` when adding third-party service interfaces, helper functions, or database operations, for user to manually execute tests
+- Test file naming: `*_test.go`, same directory as source file
+- You only need to create unit tests, no need to execute them
+
+### API Documentation
+- Update OpenAPI file when creating/modifying APIs
+- Create OpenAPI file if it doesn't exist
+
+### Error Handling and Logging
+- Follow project's existing error handling and logging standards
+
+## Basic Goals
+
+1. Project runs without errors
+2. No lint errors
+
+## Post-development Cleanup
+
+1. Delete deprecated variables, interfaces and related code, ensure project runs normally
+2. Organize dependencies, run `go mod tidy`
+3. Check `README.md` in working directory, confirm if sync update is needed. Create it if it doesn't exist
+
+## Code Standards
+
+Development follows modern Go development paradigm, use following tools to check code quality:
+
+```bash
+# golangci-lint (comprehensive code check)
+golangci-lint run <working-directory>
+
+# modernize (modern Go development paradigm check, this command will auto-install modernize if it doesn't exist)
+go run golang.org/x/tools/go/analysis/passes/modernize/cmd/modernize@latest -test <working-directory>/...
+```
+
+If above tools don't exist, install first:
+
+```bash
+# Install golangci-lint
+go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+```
+
+## Notes
+- Do NOT modify code auto-generated by frameworks or commands. Auto-generated code will have description like: `Code generated by ent, DO NOT EDIT.` at the beginning