Update Nexus

Purpose: Sync system files from the upstream Nexus repository while protecting user data

Trigger: "update nexus", "sync nexus", "get updates", "check for updates"

Duration: 1-2 minutes

---

What This Does

Updates these system files from upstream:

• 00-system/ - Core framework, skills, documentation
• CLAUDE.md - Entry point
• README.md - Project readme

Protects these user folders (NEVER touched):

• 01-memory/ - Your goals, learnings, config
• 02-projects/ - Your projects
• 03-skills/ - Your custom skills
• 04-workspace/ - Your files
• .env, .claude/ - Your secrets and settings

---

Workflow

Step 1: Check for Updates

Run the update check:

python 00-system/core/nexus-loader.py --check-update

Parse the JSON response:

• If checked: false with error → Display error, exit gracefully
• If update_available: false → Display "Already up-to-date!", exit
• If update_available: true → Continue to Step 2

Step 2: Show What Will Change

Display to user:

UPDATE AVAILABLE

Current version: {local_version}
New version:     {upstream_version}

Files to update ({changes_count}):
{list changed_files, max 20}

PROTECTED (will NOT be touched):
- 01-memory/    (your goals & config)
- 02-projects/  (your projects)
- 03-skills/    (your custom skills)
- 04-workspace/ (your files)

Step 3: Confirm with User

Ask: "Proceed with update? (yes/no)"

• If no → Exit with "Update cancelled"
• If yes → Continue to Step 4

Step 4: Perform Sync

Run the sync command:

python 00-system/core/nexus-loader.py --sync --force

Parse the JSON response:

• If success: false → Display error message, suggest fixes
• If success: true → Continue to Step 5

Step 5: Display Results

On success, display:

UPDATE COMPLETE!

{local_version} → {upstream_version}

Updated paths:
{list files_updated}

Backup saved to: {backup_path}

To commit this update:
  git add . && git commit -m "Update Nexus to v{upstream_version}"

---

Error Handling

Error	User Message
"Not a git repository"	"This folder isn't a git repo. Initialize with: git init"
"Could not reach upstream"	"Can't connect to GitHub. Check your internet connection."
"Uncommitted changes detected"	"You have uncommitted changes. Commit them first:\n git add . && git commit -m 'Save changes'"
"Could not read upstream version"	"The upstream repo might not be set up correctly. Check the URL in user-config.yaml"

---

Advanced: Dry Run

To preview changes without applying:

python 00-system/core/nexus-loader.py --sync --dry-run

This shows what WOULD change, but doesn't change anything.

---

Notes

• Backup: Before any sync, your current system files are backed up to .sync-backup/{timestamp}/
• Safe: User data folders are NEVER in the sync paths - they cannot be touched
• Upstream Remote: Automatically added on first use (named "upstream")
• Default URL: https://github.com/beamanalytica/Nexus-v4.git (can override in user-config.yaml)