docs(issue-14): add detailed Stage 3 plan - File Updates & Automation Preparation

Child #2 Pre-Migration Preparation - Stage 3 Planning Complete

Stage 3 Objective:
- Generate all 21 updated dependency files (info-tech-io → info-tech)
- Create comprehensive deployment automation suite
- Complete staging environment validation
- Final migration readiness assessment

Implementation Plan:
- Step 3.1: Updated Files Generation (2.5h)
- Step 3.2: Batch Deployment Automation (2h)
- Step 3.3: Staging Environment Testing (2.5h)
- Step 3.4: Migration Readiness Validation (1h)

Critical Success Factors:
- 100% file update accuracy with zero organization references
- Complete automation testing with rollback procedures
- Staging environment 100% functional validation
- GitHub Support coordination confirmed

Files Added:
- 003-file-updates-automation-preparation.md (comprehensive 8-hour plan)

Stage 3 Status: 📋 READY FOR EXECUTION
Target Completion: 2025-11-09 15:00 UTC
Next: Begin implementation execution

Related: #12, #14
Workflow Stage: Planning → Implementation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: InfoTech.io Bot

docs/proposals/epic-12-organization-migration/child-2-pre-migration-preparation/003-file-updates-automation-preparation.md

@@ -0,0 +1,304 @@
+# Stage 3: File Updates & Automation Preparation
+
+**Child**: #2 Pre-Migration Preparation
+**Epic**: #12 Organization Migration
+**Issue**: https://github.com/info-tech-io/info-tech-io.github.io/issues/14
+**Stage**: 3 of 4
+**Estimated Duration**: 1 day (8 hours)
+**Dependencies**: Stages 1-2 completed successfully
+
+---
+
+## 🎯 Stage 3 Objective
+
+**Primary Goal**: Generate all updated dependency files and create comprehensive automation for seamless migration day deployment.
+
+**Critical Success Factors**:
+- All 21 dependency files updated with organization name change
+- Batch deployment automation scripts ready and tested
+- Comprehensive staging environment validation completed
+- Zero-error migration day preparation achieved
+
+---
+
+## 📋 Detailed Implementation Plan
+
+### Step 3.1: Updated Files Generation (2.5 hours)
+
+**Action**: Generate updated versions of all 21 dependency files identified in Child #1
+
+**Implementation**:
+```bash
+# Create updated files directory structure
+mkdir -p /tmp/epic-12-migration-updates/{github-pages,repository-dispatch,infotecha-production}
+
+# Generate GitHub Pages Federation files (9 dependencies)
+for file in deploy-github-pages.yml documentation-modules.json; do
+    sed 's/info-tech-io/info-tech/g' "backup/$file" > "updates/github-pages/$file"
+done
+
+# Generate Repository Dispatch files (10 dependencies)
+for repo in hugo-templates info-tech-cli info-tech mod_linux_base mod_linux_advanced mod_linux_professional mod_template quiz web-terminal; do
+    sed 's/info-tech-io/info-tech/g' "backup/notify-$repo.yml" > "updates/repository-dispatch/notify-$repo.yml"
+done
+
+# Generate ИНФОТЕКА Production files (2 dependencies)
+for file in build-module.yml build-module-v2.yml; do
+    sed 's/info-tech-io/info-tech/g' "backup/$file" > "updates/infotecha-production/$file"
+done
+```
+
+**Verification**:
+- [ ] All 21 updated files generated correctly
+- [ ] No remaining "info-tech-io" references in updated files
+- [ ] File integrity maintained (syntax validation)
+- [ ] Checksum documentation for all updated files
+
+**Success Criteria**:
+- ✅ 21/21 files successfully updated
+- ✅ 100% organization reference replacement
+- ✅ Zero syntax errors in updated files
+- ✅ Complete audit trail of changes
+
+### Step 3.2: Batch Deployment Automation (2 hours)
+
+**Action**: Create comprehensive automation scripts for simultaneous deployment across all repositories
+
+**Implementation**:
+```bash
+# Create deployment automation directory
+mkdir -p /tmp/epic-12-automation/{scripts,configs,logs}
+
+# Main deployment orchestration script
+cat > /tmp/epic-12-automation/scripts/deploy-migration-updates.sh << 'EOF'
+#!/bin/bash
+set -euo pipefail
+
+REPOS=(
+    "info-tech-io.github.io" "hugo-templates" "info-tech-cli"
+    "info-tech" "mod_linux_base" "mod_linux_advanced"
+    "mod_linux_professional" "mod_template" "quiz" "web-terminal"
+)
+
+for repo in "${REPOS[@]}"; do
+    echo "Deploying updates to $repo..."
+    ./deploy-single-repo.sh "$repo" || exit 1
+done
+
+echo "All repositories updated successfully"
+EOF
+
+# Individual repository deployment script
+# Repository validation script
+# Rollback automation script
+# Pre-deployment verification script
+```
+
+**Verification**:
+- [ ] All automation scripts executable and tested
+- [ ] Dry-run mode available for safe testing
+- [ ] Comprehensive logging and error handling
+- [ ] Rollback automation fully functional
+
+**Success Criteria**:
+- ✅ Complete deployment automation ready
+- ✅ Dry-run testing successful
+- ✅ Error handling and rollback tested
+- ✅ Migration day execution plan validated
+
+### Step 3.3: Staging Environment Comprehensive Testing (2.5 hours)
+
+**Action**: Execute complete end-to-end testing in isolated staging environment
+
+**Implementation**:
+```bash
+# Staging environment testing suite
+cd /tmp/epic-12-staging/
+
+# Test 1: GitHub Pages federation build
+./test-github-pages-federation.sh
+
+# Test 2: Repository dispatch workflows
+./test-repository-dispatch.sh
+
+# Test 3: ИНФОТЕКА production workflows
+./test-infotecha-workflows.sh
+
+# Test 4: Cross-system integration
+./test-complete-integration.sh
+
+# Performance and reliability testing
+./run-stress-tests.sh
+```
+
+**Verification**:
+- [ ] All staging repositories build successfully
+- [ ] GitHub Pages federation works with new organization
+- [ ] Repository dispatch events function correctly
+- [ ] ИНФОТЕКА workflows unaffected
+- [ ] Performance benchmarks met
+
+**Success Criteria**:
+- ✅ 100% staging test success rate
+- ✅ Build times within acceptable range (<5% degradation)
+- ✅ Zero functional regressions detected
+- ✅ Complete system integration validated
+
+### Step 3.4: Final Migration Readiness Validation (1 hour)
+
+**Action**: Comprehensive readiness assessment and go/no-go preparation
+
+**Implementation**:
+```bash
+# Migration readiness checklist execution
+./validate-migration-readiness.sh
+
+# Generate migration day timeline
+./generate-migration-timeline.sh
+
+# Final coordination checkpoint
+./validate-github-support-coordination.sh
+
+# Emergency procedures final check
+./test-emergency-rollback-procedures.sh
+```
+
+**Verification**:
+- [ ] All technical prerequisites met
+- [ ] GitHub Support coordination confirmed
+- [ ] Emergency procedures validated
+- [ ] Migration timeline finalized
+
+**Success Criteria**:
+- ✅ Complete technical readiness confirmed
+- ✅ External coordination validated
+- ✅ Risk mitigation procedures ready
+- ✅ Go/no-go decision framework prepared
+
+---
+
+## 🚨 Risk Assessment & Mitigation
+
+### High-Risk Areas
+
+| Risk | Impact | Mitigation |
+|------|--------|------------|
+| **File Update Errors** | Migration failure | Comprehensive syntax validation + rollback |
+| **Automation Script Bugs** | Deployment chaos | Extensive dry-run testing + manual fallback |
+| **Staging Environment Discrepancies** | False confidence | Production-identical staging setup |
+| **GitHub Support Coordination Gap** | Migration delay | Multi-channel communication + backup timeline |
+
+### Emergency Procedures
+
+**If Critical Issues Detected**:
+1. **STOP** - Halt all preparation activities
+2. **ASSESS** - Determine impact severity
+3. **ESCALATE** - Immediate team notification
+4. **RESOLVE** - Apply appropriate mitigation
+5. **VALIDATE** - Re-test before proceeding
+
+---
+
+## 📊 Quality Assurance Framework
+
+### Testing Requirements
+
+**Automated Testing**:
+- [ ] Syntax validation for all 21 updated files
+- [ ] Deployment script integration testing
+- [ ] Staging environment functional testing
+- [ ] Performance regression testing
+
+**Manual Validation**:
+- [ ] Visual inspection of critical files
+- [ ] GitHub Support communication verification
+- [ ] Emergency procedure walkthrough
+- [ ] Migration timeline review
+
+### Success Metrics
+
+| Metric | Target | Measurement |
+|--------|--------|-------------|
+| **File Update Accuracy** | 100% | Zero remaining "info-tech-io" references |
+| **Automation Reliability** | 99%+ | Dry-run success rate |
+| **Staging Test Success** | 100% | All test scenarios pass |
+| **Performance Impact** | <5% | Build time comparison |
+
+---
+
+## 📁 Deliverables
+
+### Primary Outputs
+1. **Updated Files Package** (`/tmp/epic-12-migration-updates/`)
+   - 21 updated dependency files ready for deployment
+   - Complete change documentation and checksums
+   - Validation reports for all updates
+
+2. **Deployment Automation Suite** (`/tmp/epic-12-automation/`)
+   - Master deployment orchestration script
+   - Individual repository deployment scripts
+   - Rollback and recovery automation
+   - Comprehensive logging and monitoring
+
+3. **Staging Environment Validation** (`/tmp/epic-12-staging/test-results/`)
+   - Complete test suite execution reports
+   - Performance benchmarking results
+   - Integration testing validation
+   - Regression analysis documentation
+
+4. **Migration Readiness Assessment** (`/tmp/epic-12-readiness/`)
+   - Technical readiness checklist
+   - External coordination status
+   - Risk assessment final report
+   - Go/no-go decision framework
+
+---
+
+## 🔄 Rollback Plan
+
+**If Stage 3 Cannot Complete Successfully**:
+
+1. **Immediate Actions**:
+   - Document specific failure points
+   - Preserve all generated artifacts
+   - Notify stakeholders of delay
+
+2. **Recovery Options**:
+   - **Option A**: Address specific issues and retry stage
+   - **Option B**: Modify migration approach based on findings
+   - **Option C**: Postpone migration pending issue resolution
+
+3. **Rollback Procedures**:
+   - Restore staging environment to pre-stage state
+   - Remove any partially deployed updates
+   - Reset coordination timelines with GitHub Support
+
+---
+
+## ✅ Definition of Done
+
+Stage 3 is complete when:
+
+- [ ] **All 21 updated files generated and validated**
+- [ ] **Complete deployment automation tested and ready**
+- [ ] **Staging environment 100% functional with updates**
+- [ ] **Migration readiness assessment shows GREEN status**
+- [ ] **GitHub Support coordination confirmed for next phase**
+- [ ] **Emergency procedures validated and ready**
+- [ ] **Stage 3 progress report completed and documented**
+- [ ] **Child #2 ready for Stage 4 (Final Coordination)**
+
+---
+
+## 📚 References
+
+- **Child #1 Dependencies Analysis**: `../child-1-dependencies-analysis/`
+- **Previous Stages**: `001-progress.md`, `002-progress.md`
+- **Epic Design**: `../design.md`
+- **InfoTech.io Workflow**: https://github.com/info-tech-io/info-tech/blob/main/docs/content/open-source/issue-commit-workflow.md
+
+---
+
+**Created**: 2025-11-09 07:00 UTC
+**Stage 3 Target Completion**: 2025-11-09 15:00 UTC
+**Next Stage**: Stage 4 - Final Coordination & Go/No-Go Decision