merge main (0.6.0) into fix/omp-developer-messages

Align the developer-message fix with the Provider API transport router.
The fix stays scoped to the legacy /alpha/generate converter, and the
OMP advisory compat test now forces the upgrade_required fallback so the
advisory is asserted on the generate request body.

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "pi-commandcode-provider",
-  "version": "0.5.1",
+  "version": "0.6.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "pi-commandcode-provider",
-      "version": "0.5.1",
+      "version": "0.6.0",
       "license": "MIT",
       "devDependencies": {
         "@types/node": "25.6.0",
@@ -473,7 +473,7 @@
       "version": "25.6.0",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-25.6.0.tgz",
       "integrity": "sha512-+qIYRKdNYJwY3vRCZMdJbPLJAtGjQBudzZzdzwQYkEPQd+PJGixUL5QfvCLDaULoLv+RhT3LDkwEfKaAkgSmNQ==",
-      "devOptional": true,
+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "undici-types": "~7.19.0"
@@ -589,7 +589,7 @@
       "version": "7.19.2",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.19.2.tgz",
       "integrity": "sha512-qYVnV5OEm2AW8cJMCpdV20CDyaN3g0AjDlOGf1OW4iaDEx8MwdtChUp4zu4H0VP3nDRF/8RKWH+IPp9uW0YGZg==",
-      "devOptional": true,
+      "dev": true,
       "license": "MIT"
     }
   }