[scenario] authz metadata discovery tests: compatibility with 2025-03-26 spec, prm root, and www-authenticate (#28)

* clean up constructor calls for server lifecycle

* add back compat test

* fix dup logging, rm prm

* avoid fallbacks

* better error from example client

* add final endpoint method

* add test for OASM priority order

* s/prepack/prepare/ for npx

* try switching to .js

* make tsdown version happy default

* fix lock

* fix prmPath issue

* back to main package-lock

* fix bin path

* Add comprehensive auth scenario test suite

- Add index.test.ts to test all auth scenarios with auth-test.ts client
- Upgrade @modelcontextprotocol/sdk from 1.20.1 to 1.22.0
- All 5 auth scenarios now pass including auth/basic-metadata-var2

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

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

* consolidate tests into index.test.ts

* rename metadata

* fix comments

* rework auth scenario listing

* add 3rd variation of metadata

* fix some type issues introduced by version bump

* add reusable spec references

* more refs

* fix up spec references

---------

Co-authored-by: Claude <noreply@anthropic.com>

package.json

@@ -26,7 +26,7 @@
     "dist"
   ],
   "bin": {
-    "conformance": "dist/index.mjs"
+    "conformance": "dist/index.js"
   },
   "devDependencies": {
     "@eslint/js": "^9.8.0",
@@ -43,7 +43,7 @@
     "vitest": "^4.0.5"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.20.1",
+    "@modelcontextprotocol/sdk": "^1.22.0",
     "commander": "^14.0.2",
     "express": "^5.1.0",
     "lefthook": "^2.0.2",