Fix missing files detection - add 'was not found at' pattern

The intelligent recovery system wasn't detecting missing .ibd files because
MariaDB/MySQL error format uses 'was not found at' instead of 'missing'.

Changes:
- Added 'was not found at' pattern to grep searches (3 locations)
- Enhanced tablespace extraction to parse './db/table.ibd' format
- Extracts database/table from error: 'Tablespace N was not found at ./db/table.ibd'
- Falls back to quoted tablespace name extraction if new pattern doesn't match

Now when script detects missing .ibd files it will:
- Show DIAGNOSIS: Missing or unopenable tablespace files
- List exact missing tables with database names
- Provide copy-paste ready cp commands
- Show all recovery options instead of generic troubleshooting

modules/backup/mysql-restore-to-sql.sh

@@ -275,7 +275,7 @@ show_recovery_options() {
     local memory_issue=""
 
     if [ -f "$error_log" ]; then
-        if grep -qE "Cannot open tablespace|Tablespace.*missing|Unable to open" "$error_log"; then
+        if grep -qE "Cannot open tablespace|Tablespace.*missing|Tablespace.*was not found|Unable to open" "$error_log"; then
             missing_files="yes"
         fi
         if grep -qE "Corrupted|Database page corruption" "$error_log"; then
@@ -303,9 +303,16 @@ show_recovery_options() {
 
         # Extract tablespace names from various error patterns
         while IFS= read -r error_line; do
-            # Pattern 1: "Cannot open tablespace 'db/table'"
+            # Pattern 1: "Cannot open tablespace 'db/table'" or "Tablespace N was not found at ./db/table.ibd"
-            if echo "$error_line" | grep -qE "Cannot open|Unable to open|Tablespace.*missing"; then
+            if echo "$error_line" | grep -qE "Cannot open|Unable to open|Tablespace.*missing|was not found at"; then
-                local tablespace=$(echo "$error_line" | grep -oE "'[^']+'" | tr -d "'" | head -1)
+                # Try to extract path from "was not found at ./path/table.ibd"
+                local tablespace=$(echo "$error_line" | grep -oE '\./[^/]+/[^.]+\.ibd' | sed 's|\./||;s|\.ibd||' | head -1)
+
+                # Fallback: try to extract from quoted tablespace name
+                if [ -z "$tablespace" ]; then
+                    tablespace=$(echo "$error_line" | grep -oE "'[^']+'" | tr -d "'" | head -1)
+                fi
+
                 if [ -n "$tablespace" ]; then
                     missing_list+=("$tablespace")
                     missing_count=$((missing_count + 1))
@@ -320,7 +327,7 @@ show_recovery_options() {
                     missing_count=$((missing_count + 1))
                 fi
             fi
-        done < <(grep -iE "Cannot open|Unable to open|Tablespace.*missing|Cannot find space id" "$error_log" 2>/dev/null)
+        done < <(grep -iE "Cannot open|Unable to open|Tablespace.*missing|was not found at|Cannot find space id" "$error_log" 2>/dev/null)
 
         if [ "$missing_count" -gt 0 ]; then
             print_warning "MISSING FILES DETECTED ($missing_count found):"
@@ -351,7 +358,7 @@ show_recovery_options() {
             print_warning "Could not parse specific missing files from error log"
             echo "Showing raw error lines:"
             echo ""
-            grep -iE "Cannot open|Unable to open|Tablespace.*missing" "$error_log" 2>/dev/null | head -10
+            grep -iE "Cannot open|Unable to open|Tablespace.*missing|was not found at" "$error_log" 2>/dev/null | head -10
             echo ""
         fi