feat: SEFACA v0.1.0 - Minimal implementation with curl|sh deployment

- Core functionality: context tracking, audit logging, execution modes
- Self-contained installer (shell archive pattern)
- Successfully tested on ARM64 (pi.lan)
- GitHub Gist deployment ready
- Complete documentation and deployment workflow

Author: aygp-dr

BUILD_TEST_DEPLOY.md

@@ -0,0 +1,138 @@
+# SEFACA Build, Test, Deploy Workflow
+
+This minimal workflow enables repeatable deployment of SEFACA.
+
+## Quick Deploy (30 seconds)
+
+```bash
+# 1. Update Git SHA in both files
+SHA=$(git log -1 --format="%h")
+sed -i "s/Git SHA: .*/Git SHA: $SHA/" scripts/sefaca.sh scripts/install-standalone.sh
+
+# 2. Create gist
+gh gist create scripts/install-standalone.sh --desc "SEFACA v0.1.0 - Git SHA: $SHA" --public
+
+# 3. Test deployment
+curl -sSL https://gist.github.com/YOUR_GIST_ID/raw | sh
+source ~/.sefaca/bin/load-sefaca
+sefaca status
+```
+
+## Components
+
+### 1. Core Script (`scripts/sefaca.sh`)
+- Main SEFACA functionality
+- Updated with Git SHA for tracking
+- Sourced by installer
+
+### 2. Installer (`scripts/install-standalone.sh`)
+- Self-contained shell archive
+- Embeds entire sefaca.sh
+- No external downloads
+
+### 3. Deployment
+- GitHub Gist for testing
+- Future: sefaca.dev CDN
+
+## Build Process
+
+1. **Update Version/SHA**
+   ```bash
+   # Get current SHA
+   git log -1 --format="%h"
+   
+   # Update both files
+   vim scripts/sefaca.sh       # Update Git SHA comment
+   vim scripts/install-standalone.sh  # Update Git SHA and embedded content
+   ```
+
+2. **Test Locally**
+   ```bash
+   # Clean install test
+   rm -rf ~/.sefaca/bin
+   sh scripts/install-standalone.sh
+   source ~/.sefaca/bin/load-sefaca
+   sefaca run --context "[test:local:user@host(repo:branch)]" date
+   sefaca logs
+   ```
+
+## Test Process
+
+1. **Local Testing**
+   ```bash
+   make test-local  # Run test suite
+   bash test-standalone.sh  # Test installation
+   ```
+
+2. **Remote Testing**
+   ```bash
+   # On remote machine (e.g., pi.lan)
+   curl -sSL https://gist.github.com/aygp-dr/1cc80b2e8156c599f357786b552e462d/raw | sh
+   source ~/.sefaca/bin/load-sefaca
+   sefaca status
+   ```
+
+## Deploy Process
+
+1. **Create Gist**
+   ```bash
+   gh gist create scripts/install-standalone.sh \
+     --desc "SEFACA Installer v0.1.0-minimal" \
+     --public
+   ```
+
+2. **Document Deployment**
+   - Update DEPLOYMENT_EXPERIMENT.md with:
+     - Gist ID
+     - Git SHA
+     - Test results
+     - Any issues encountered
+
+3. **Validate**
+   ```bash
+   # Test the gist URL works
+   curl -sSL https://gist.github.com/GIST_ID/raw | head -20
+   ```
+
+## Current Deployments
+
+| Date | Gist ID | Git SHA | Status |
+|------|---------|---------|--------|
+| 2025-07-31 | 1cc80b2e8156c599f357786b552e462d | e384cfa | Active |
+
+## Rollback Process
+
+```bash
+# Use previous gist URL
+curl -sSL https://gist.github.com/PREVIOUS_GIST_ID/raw | sh
+```
+
+## Best Practices
+
+1. **Always test locally first**
+2. **Update Git SHA for tracking**
+3. **Document each deployment**
+4. **Keep gists public for curl access**
+5. **Test from clean environment**
+
+## Troubleshooting
+
+### Common Issues
+
+1. **404 Errors**: Check gist URL format
+2. **Caching**: GitHub caches for ~5 minutes
+3. **Shell Compatibility**: Test on sh, bash, zsh
+
+### Debug Commands
+
+```bash
+# Verbose curl
+curl -vsSL https://gist.github.com/GIST_ID/raw
+
+# Check what was installed
+cat ~/.sefaca/bin/sefaca.sh | head -20
+
+# Manual source test
+. ~/.sefaca/bin/sefaca.sh
+type sefaca
+```