Enforce queue function commit body requirement

commit-msg hook now validates that commits mentioning queue functions
(q_*) must include detailed explanations in the message body, as
required by contributing guide.

Change-Id: Idec84de41a8b072310f57c07471b6913cc05adbf

Author: jserv

scripts/commit-msg.hook

@@ -394,25 +394,24 @@ validate_commit_message() {
     add_warning 1 "Do not write single-word commits. Provide a descriptive subject"
   fi
 
-  # 7a. Avoid using C source filenames as the commit subject.
+  # 7a. Avoid using C source filenames as the commit subject
   if [[ "${COMMIT_SUBJECT_TO_PROCESS}" =~ ^[_a-zA-Z0-9]+\.[ch]$ ]]; then
     add_warning 1 "Avoid mentioning C source filenames in the commit subject"
   fi
 
-  # 7b. Disallow parentheses in the commit subject.
+  # 7b. Disallow parentheses in the commit subject
   if [[ ${COMMIT_SUBJECT_TO_PROCESS} =~ [\(\)] ]]; then
     add_warning 1 "Avoid using parentheses '()' in commit subjects"
   fi
 
-  # 7c. Disallow conventional commit format (e.g., "chore(scope):", "feat:", etc.)
+  # 7c. Disallow conventional commit format
   # These formats waste precious characters from the 50-character limit
   # Check for patterns like "type:" or "type(scope):" with optional breaking change indicator
   if [[ ${COMMIT_SUBJECT} =~ ^[a-z]+\([^\)]+\):[[:space:]] ]] || [[ ${COMMIT_SUBJECT} =~ ^[a-z]+!?:[[:space:]] ]]; then
     add_warning 1 "Avoid conventional commit format (e.g., 'chore(scripts):', 'feat:', 'fix:'). Write a direct, descriptive subject"
   fi
 
-  # 7d. Alert if the commit subject starts with "Implementation"
-  # ------------------------------------------------------------------------------
+  # 7d. Alert if the commit subject starts with non-imperative words
   if [[ "${COMMIT_SUBJECT_TO_PROCESS}" =~ ^(First|My|Implementation|Implementations|Creation|Modification|Queue) ]]; then
     add_warning 1 "Commit subject should use imperative mood"
   fi
@@ -439,6 +438,14 @@ validate_commit_message() {
     fi
   fi
 
+  # 8a. For queue functions (q_*), require detailed explanation in body
+  # Check if subject mentions queue functions like "Implement q_size" or "Fix q_new"
+  if [[ "${COMMIT_SUBJECT}" =~ q_[a-zA-Z_]+ ]]; then
+    if [ "${NON_COMMENT_COUNT}" -le 1 ]; then
+      add_warning 1 "Queue function commits require detailed explanation in the body"
+    fi
+  fi
+
   # 9. Do not start the subject line with whitespace
   # ------------------------------------------------------------------------------