feat: automated deployment, comprehensive documentation, and operational improvements

.gitignore

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+# Credentials
+credentials.txt
+
+# Log files
+*.log
+logs/
+**/logs/*.log
+**/scripts/logs/*.log
+
+# Build artifacts
+.aws-sam/
+build/
+dist/
+node_modules/
+package-lock.json
+
+# Generated configuration files (deployment-specific)
+**/aws-exports.ts
+**/environment.ts
+**/environment.prod.ts
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+.venv/
+venv/
+ENV/
+env/
+.hypothesis/
+.pytest_cache/
+
+# Tests (local only)
+tests/
+
+# Documentation and notes (local only)
+extra-info/
+
+# IDE
+.vscode/
+.idea/
+.kiro/
+*.swp
+*.swo
+*~
+
+# Kiro specific
+.kiro/specs/
+.kiro/steering/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Workshop Studio (Case_A) packaging — local only, not for public GitHub.
+# These scripts and artefacts contain Workshop-Studio-specific references
+# (Assets_Bucket prefix, workshop catalog ID) and are tracked in the internal
+# workshop-docs repo. The public Case_B GitHub repo ships only the scripts
+# relevant to developers running ./deploy-all.sh on their own AWS account.
+scripts/package-for-workshop-studio.sh
+scripts/packaging_rewrite.py
+scripts/transform_cdk_template.py
+scripts/packaging-manifest.json