docs: add dotnet_tests metadata columns and mark 9 failing tests

Add long_running, real_network, test_project, and failing columns to
dotnet_tests table. Set test_project for all 3,491 rows. Mark 9 known
failing tests. Fix slopwatch hook to use absolute path.

.claude/settings.local.json

@@ -6,7 +6,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "slopwatch analyze -d . --hook",
+            "command": "/Users/dohertj2/.dotnet/tools/slopwatch analyze -d . --hook",
             "timeout": 60000
           }
         ]