docs(project): complete project setup and documentation

- Add agent system constitution with time recording standards
- Add Git workflow documentation for all agents
- Add comprehensive time recording policy (UTC + GMT+8)
- Add CHANGELOG with version history
- Add CONTRIBUTING guide with Git workflow and commit conventions
- Add project specification document
- Add README with project overview
- Add .gitignore for macOS and editor files
- Update CLAUDE.md with project requirements and metadata

Project initialized: 2025-10-04 08:50:35 UTC / 16:50:35 GMT+8

.gitignore

@@ -0,0 +1,41 @@
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.ico
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+*.swp
+*.swo
+*~
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Temporary files
+*.tmp
+*.temp