Fix integer expression errors in QA script category counts

Same newline sanitization issue as email diagnostics - grep -c output
can contain newlines causing "integer expression expected" errors.

Fixed by sanitizing count variables:
- Line 3367: Category count comparison
- Line 2533: Performance cache occurrence count

Added: echo "$count" | head -1 | tr -d '\n\r'

Prevents errors like: [: 0\n0: integer expression expected

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

tools/toolkit-qa-check.sh

@@ -2530,6 +2530,7 @@ while IFS= read -r file; do
     if [ -n "$duplicates" ]; then
         for cmd in $duplicates; do
             occurrences=$(grep -c "$cmd" "$file" 2>/dev/null)
+            occurrences=$(echo "$occurrences" | head -1 | tr -d '\n\r')
             first_line=$(grep -n "$cmd" "$file" 2>/dev/null | head -1 | cut -d: -f1)
             echo "MEDIUM|$file|$first_line|[PERF-CACHE] Command '$cmd' called $occurrences times"
             echo "  Risk: Unnecessary overhead from repeated execution"
@@ -3364,6 +3365,7 @@ echo -e "${BOLD}═════════════════════
 declare -A cat_counts
 for tag in SQL-INJ CMD-INJ PANEL-CALL FILE-OP SECRET-LEAK RACE SOURCE RETURN NULL DEP TEMP SUBSHELL PIPE WORDSPLIT ARITH TEST REDIR TRAP ARRAY HEREDOC IF-MASK NUMCMP BG-JOB LOCALE PROC-SUB PRINTF REGEX BASHISM ESCAPE SLEEP-RACE IFS SUBSHELL-VAR TRAP-RACE PERF-LOOP PERF-CACHE PERF-READ RECURSION FD-LEAK ZOMBIE DISK-SPACE NET-TIMEOUT LOG-ROTATE CPU-LOOP HARDCODED-PATH MISSING-LIB USERDATA-ACCESS API-CHECK NO-CASE DB-PATTERN NO-USER-MGR NO-STANDALONE; do
     count=$(grep -c "\[$tag\]" "$REPORT" 2>/dev/null || echo 0)
+    count=$(echo "$count" | head -1 | tr -d '\n\r')
     if [ "$count" -gt 0 ]; then
         cat_counts[$tag]=$count
     fi