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

.claude/time-recording-policy.md

@@ -0,0 +1,200 @@
+# Time Recording Policy
+
+## Critical Rule: No Fabricated Timestamps
+
+**All AI agents and team members must follow this policy strictly.**
+
+## Policy Statement
+
+1. **Never invent, fabricate, or hallucinate dates and times**
+2. **Use actual system time or explicitly mark as TBD**
+3. **Record all timestamps in dual timezone format**
+
+## Required Format
+
+### Dual Timezone Recording
+
+Every timestamp must be recorded in BOTH timezones:
+
+```
+Created: 2025-10-04 08:50:35 UTC
+Created: 2025-10-04 16:50:35 GMT+8
+```
+
+### Format Specification
+
+- **UTC**: Coordinated Universal Time (reference timezone)
+- **GMT+8**: Asia/Shanghai timezone (local timezone)
+- **Format**: `YYYY-MM-DD HH:MM:SS [TIMEZONE]`
+
+## When to Use TBD
+
+If the actual date/time is not yet determined, use:
+
+```
+Event Date: TBD
+Event Time: TBD
+Deadline: To be determined
+```
+
+**Never guess or estimate dates for future events.**
+
+## Examples
+
+### ✅ Correct Usage
+
+**Document Creation:**
+```markdown
+## Document Information
+Created: 2025-10-04 08:50:35 UTC
+Created: 2025-10-04 16:50:35 GMT+8
+Last Modified: 2025-10-04 08:50:35 UTC
+Last Modified: 2025-10-04 16:50:35 GMT+8
+```
+
+**Event Planning:**
+```markdown
+## Halloween Event
+Event Date: TBD (awaiting confirmation from McDonald's IT)
+Event Time: TBD
+RSVP Deadline: TBD
+```
+
+**Git Commits:**
+```bash
+# Commit messages automatically include accurate timestamps
+git commit -m "docs: add time recording policy"
+# Git will use system time automatically
+```
+
+**Meeting Notes:**
+```markdown
+## Meeting Notes
+Date: 2025-10-04 08:50:35 UTC / 2025-10-04 16:50:35 GMT+8
+Attendees: [List]
+Next Meeting: TBD
+```
+
+### ❌ Incorrect Usage
+
+**DO NOT do this:**
+```markdown
+# Wrong - fabricated future date
+Event Date: October 31, 2024
+Event Time: 6:00 PM - 10:00 PM
+
+# Wrong - guessed date
+Deadline: Next Friday
+
+# Wrong - relative time without reference
+Updated: Yesterday
+
+# Wrong - single timezone only
+Created: 2025-10-04 16:50:35
+```
+
+## Implementation Guidelines
+
+### For All Agents
+
+1. **When creating documents:**
+   - Add creation timestamp in dual format
+   - Use actual system time
+
+2. **When recording events:**
+   - Use TBD for unconfirmed dates
+   - Update with actual dates once confirmed
+
+3. **When updating documents:**
+   - Add "Last Modified" timestamp
+   - Keep original creation timestamp
+
+4. **When planning:**
+   - Use "Target Date: TBD" for estimates
+   - Never commit to specific dates without authorization
+
+### For DevOps Engineer
+
+Special responsibilities:
+- Verify all documentation follows time policy
+- Audit commits for accurate timestamps
+- Ensure CI/CD logs use correct timezone format
+- Monitor for policy violations
+
+### For Product Manager
+
+When creating specifications:
+- Mark all deadlines as TBD until confirmed
+- Document when dates are confirmed
+- Update changelog with actual decision dates
+
+### For Scrum Master
+
+When planning sprints:
+- Use actual sprint start/end dates
+- Mark future sprint dates as TBD
+- Record retrospective dates accurately
+
+## Getting Current Time
+
+### Command Line (Unix/Linux/macOS)
+```bash
+# UTC time
+TZ=UTC date '+%Y-%m-%d %H:%M:%S %Z'
+
+# GMT+8 time
+TZ=Asia/Shanghai date '+%Y-%m-%d %H:%M:%S %Z'
+
+# Both at once
+echo "UTC: $(TZ=UTC date '+%Y-%m-%d %H:%M:%S %Z')" && \
+echo "GMT+8: $(TZ=Asia/Shanghai date '+%Y-%m-%d %H:%M:%S %Z')"
+```
+
+### In Documentation
+```markdown
+<!-- Use actual system time when creating -->
+Created: [Run: date -u '+%Y-%m-%d %H:%M:%S UTC']
+Created: [Run: TZ=Asia/Shanghai date '+%Y-%m-%d %H:%M:%S GMT+8']
+```
+
+## Verification Checklist
+
+Before committing any document:
+
+- [ ] All timestamps use dual timezone format
+- [ ] No fabricated or guessed dates
+- [ ] Future events marked as TBD
+- [ ] Creation date reflects actual creation time
+- [ ] Last modified date is current (if updated)
+- [ ] Timezone abbreviations are correct (UTC/GMT+8)
+
+## Rationale
+
+**Why this policy exists:**
+
+1. **Accuracy**: Prevents confusion from incorrect timestamps
+2. **Accountability**: Clear record of when decisions were made
+3. **Global Collaboration**: Dual timezone supports distributed teams
+4. **Audit Trail**: Accurate history for compliance and review
+5. **Trust**: Demonstrates professional documentation practices
+
+## Policy Violations
+
+If you discover fabricated timestamps:
+
+1. **Immediate Action**: Flag the issue
+2. **Correction**: Update with TBD or actual time
+3. **Documentation**: Note the correction in commit message
+4. **Prevention**: Review why the error occurred
+
+## Questions?
+
+Contact the DevOps engineer or project lead for clarification.
+
+---
+
+**Policy Version**: 1.0  
+**Effective Date**: 2025-10-04 08:50:35 UTC / 2025-10-04 16:50:35 GMT+8  
+**Last Updated**: 2025-10-04 08:50:35 UTC / 2025-10-04 16:50:35 GMT+8  
+**Owner**: DevOps Engineer  
+**Approved By**: Project Team