v0.2.0

Changelog

• d9b1593 build: add golangci-lint with tools.go
• 41901fe feat: add WORKFLOW.md for self-hosted symphony development
• d5b1b7a feat: port codex skills from upstream symphony
• 49eaa81 fix(codex): align turn sandbox policy with thread sandbox mode
• 2512af8 fix(codex): use inputSchema instead of parameters in tool spec
• c65789a fix: golangci-lint config - move exclude-dirs to exclusions.paths
• a82eb20 fix: move plans to docs/, CI runs make check, sandbox-safe gate
• 6bef3a9 fix: sandbox-safe workflow and test targets
• 5d57ffb fix: use danger-full-access sandbox for git operations
• c2d0925 refactor(domain): move shared types to internal (#1)