dream: router dispatch + path params + scopes + 27 tests

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lib/dream/conformance.sh

@@ -23,11 +23,13 @@ VERBOSE="${1:-}"
 # Dream library modules loaded before any test suite.
 MODULES=(
   "lib/dream/types.sx"
+  "lib/dream/router.sx"
 )
 
 # Suites: NAME RUNNER-FN PATH
 SUITES=(
-  "types  dream-ty-tests-run!  lib/dream/tests/types.sx"
+  "types   dream-ty-tests-run!  lib/dream/tests/types.sx"
+  "router  dream-rt-tests-run!  lib/dream/tests/router.sx"
 )
 
 TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT