feat(cli): add semver fallback for package.json version bump

When package.json uses standard x.y.z semver instead of
MokoPlatform XX.YY.ZZ format, auto-bump using the same
bump type (major/minor/patch). Respects --minor and --major flags.

cli/version_bump.php

@@ -232,9 +232,25 @@ class VersionBumpCli extends CliFramework
                     $pkgContent
                 );
             }
-            if ($updatedPkg !== $pkgContent) {
+            if ($updatedPkg !== $pkgContent && $updatedPkg !== null) {
                 file_put_contents($packageJsonFile, $updatedPkg);
                 fwrite(STDERR, "Updated package.json\n");
+            } elseif (preg_match('/("version"\s*:\s*")(\d+)\.(\d+)\.(\d+)(")/m', $pkgContent, $semM)) {
+                // Semver fallback: bump standard x.y.z version when XX.YY.ZZ pattern didn't match
+                $sMajor = (int)$semM[2];
+                $sMinor = (int)$semM[3];
+                $sPatch = (int)$semM[4];
+                switch ($type) {
+                    case 'major': $sMajor++; $sMinor = 0; $sPatch = 0; break;
+                    case 'minor': $sMinor++; $sPatch = 0; break;
+                    default: $sPatch++; break;
+                }
+                $semNew = "{$sMajor}.{$sMinor}.{$sPatch}";
+                $semUpdated = preg_replace('/("version"\s*:\s*")\d+\.\d+\.\d+(")/m', '${1}' . $semNew . '${2}', $pkgContent);
+                if ($semUpdated !== $pkgContent) {
+                    file_put_contents($packageJsonFile, $semUpdated);
+                    fwrite(STDERR, "Updated package.json (semver: {$semM[2]}.{$semM[3]}.{$semM[4]} -> $semNew)\n");
+                }
             }
         }
         $pyprojectFile = "{$root}/pyproject.toml";