Apply technical requirements (R1, R2, R9, R10, R13)

- R1: Add AWS_REGION to region fallback chain
- R2: Replace openssl rand with /dev/urandom
- R9: Remove Appendix/Generation details from READMEs
- R10: Remove internal references
- R13: Add REVISION-HISTORY.md

Author: mwunderl

tuts/096-aws-codecommit-gs/README.md

@@ -50,15 +50,3 @@ CodeCommit is free for up to 5 active users per month (unlimited repositories).
 - [Working with branches](https://docs.aws.amazon.com/codecommit/latest/userguide/how-to-create-branch.html)
 - [CodeCommit quotas](https://docs.aws.amazon.com/codecommit/latest/userguide/limits.html)
 - [CodeCommit pricing](https://aws.amazon.com/codecommit/pricing/)
-
----
-
-## Appendix: Generation details
-
-| Field | Value |
-|-------|-------|
-| Generation date | 2026-04-14 |
-| Source script | New, 100 lines |
-| Script test result | EXIT 0, 11s, 7 steps, no issues |
-| Issues encountered | file-content needs fileb:// not inline string (fixed) |
-| Iterations | v1 |

tuts/096-aws-codecommit-gs/REVISION-HISTORY.md

@@ -0,0 +1,8 @@
+# Revision History: 096-aws-codecommit-gs
+
+## Shell (CLI script)
+
+### 2026-04-14 v1 published
+- Type: functional
+- Initial version
+

tuts/096-aws-codecommit-gs/aws-codecommit-gs.sh

@@ -14,7 +14,7 @@ fi
 export AWS_DEFAULT_REGION="$REGION"
 echo "Region: $REGION"
 
-RANDOM_ID=$(openssl rand -hex 4)
+RANDOM_ID=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 8 | head -n 1)
 REPO_NAME="tutorial-repo-${RANDOM_ID}"
 
 handle_error() { echo "ERROR on line $1"; trap - ERR; cleanup; exit 1; }

tuts/098-aws-codebuild-gs/README.md

@@ -51,15 +51,3 @@ CodeBuild free tier includes 100 build minutes per month on general1.small. No c
 - [Build specification reference](https://docs.aws.amazon.com/codebuild/latest/userguide/build-spec-ref.html)
 - [Build environment reference](https://docs.aws.amazon.com/codebuild/latest/userguide/build-env-ref.html)
 - [CodeBuild pricing](https://aws.amazon.com/codebuild/pricing/)
-
----
-
-## Appendix: Generation details
-
-| Field | Value |
-|-------|-------|
-| Generation date | 2026-04-14 |
-| Source script | New, 138 lines |
-| Script test result | EXIT 0, 37s, 6 steps, no issues |
-| Issues encountered | None |
-| Iterations | v1 |

tuts/098-aws-codebuild-gs/REVISION-HISTORY.md

@@ -0,0 +1,8 @@
+# Revision History: 098-aws-codebuild-gs
+
+## Shell (CLI script)
+
+### 2026-04-14 v1 published
+- Type: functional
+- Initial version
+

tuts/098-aws-codebuild-gs/aws-codebuild-gs.sh

@@ -15,7 +15,7 @@ export AWS_DEFAULT_REGION="$REGION"
 ACCOUNT_ID=$(aws sts get-caller-identity --query 'Account' --output text)
 echo "Region: $REGION"
 
-RANDOM_ID=$(openssl rand -hex 4)
+RANDOM_ID=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 8 | head -n 1)
 BUCKET_NAME="codebuild-tut-${RANDOM_ID}-${ACCOUNT_ID}"
 PROJECT_NAME="tut-build-${RANDOM_ID}"
 ROLE_NAME="codebuild-tut-role-${RANDOM_ID}"

tuts/125-aws-codeartifact-gs/REVISION-HISTORY.md

@@ -0,0 +1,8 @@
+# Revision History: 125-aws-codeartifact-gs
+
+## Shell (CLI script)
+
+### 2026-04-14 v1 published
+- Type: functional
+- Initial version
+

tuts/125-aws-codeartifact-gs/aws-codeartifact-gs.sh

@@ -1,12 +1,12 @@
 #!/bin/bash
 WORK_DIR=$(mktemp -d)
 exec > >(tee -a "$WORK_DIR/codeartifact-$(date +%Y%m%d-%H%M%S).log") 2>&1
-REGION=${AWS_DEFAULT_REGION:-$(aws configure get region 2>/dev/null)}
+REGION=${AWS_DEFAULT_REGION:-${AWS_REGION:-$(aws configure get region 2>/dev/null))}
 [ -z "$REGION" ] && echo "ERROR: No region" && exit 1
 export AWS_DEFAULT_REGION="$REGION"
 ACCOUNT=$(aws sts get-caller-identity --query 'Account' --output text)
 echo "Region: $REGION"
-RANDOM_ID=$(openssl rand -hex 4)
+RANDOM_ID=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 8 | head -n 1)
 DOMAIN="tut-domain-${RANDOM_ID}"
 REPO="tut-repo-${RANDOM_ID}"
 handle_error() { echo "ERROR on line $1"; trap - ERR; cleanup; exit 1; }

tuts/135-aws-codedeploy-gs/REVISION-HISTORY.md

@@ -0,0 +1,8 @@
+# Revision History: 135-aws-codedeploy-gs
+
+## Shell (CLI script)
+
+### 2026-04-14 v1 published
+- Type: functional
+- Initial version
+

tuts/135-aws-codedeploy-gs/aws-codedeploy-gs.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 WORK_DIR=$(mktemp -d); exec > >(tee -a "$WORK_DIR/codedeploy.log") 2>&1
-REGION=${AWS_DEFAULT_REGION:-$(aws configure get region 2>/dev/null)}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
-RANDOM_ID=$(openssl rand -hex 4); APP_NAME="tut-app-${RANDOM_ID}"
+REGION=${AWS_DEFAULT_REGION:-${AWS_REGION:-$(aws configure get region 2>/dev/null))}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
+RANDOM_ID=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 8 | head -n 1); APP_NAME="tut-app-${RANDOM_ID}"
 handle_error() { echo "ERROR on line $1"; trap - ERR; cleanup; exit 1; }; trap 'handle_error $LINENO' ERR
 cleanup() { echo ""; echo "Cleaning up..."; aws deploy delete-application --application-name "$APP_NAME" 2>/dev/null && echo "  Deleted app"; rm -rf "$WORK_DIR"; echo "Done."; }
 echo "Step 1: Creating application: $APP_NAME"