docs: generate API metadata from Release assemblies so extension members appear

AGENTS.md

@@ -35,9 +35,14 @@ dotnet test Invex.Process.slnx
 Build the docs site:
 
 ```shell
+dotnet build Invex.Process.slnx --configuration Release
 docfx docfx.json          # add --serve to preview locally
 ```
 
+DocFX reads the compiled `bin/Release/net10.0` assembly and its XML documentation file, because
+source extraction omits members declared in C# 14 extension blocks. Build in Release before
+regenerating docs; `atom BuildDocs` does this for you.
+
 ## Architecture overview
 
 The entire public surface is four types in the `Invex.Process` namespace:

_atom/IBuild.cs

@@ -172,7 +172,11 @@ await UnlistPrereleasesBelowVersionForPackages(NugetFeed,
         t => t
             .DescribedAs("Builds the DocFX documentation.")
             .ProducesArtifact(GeneratedDocsArtifactName)
-            .Executes(cancellationToken => BuildDocFxDocs(cancellationToken: cancellationToken));
+            .Executes(cancellationToken =>
+                BuildDocFxDocs([
+                    Projects.Invex_Process.Path(RootedFileSystem),
+                ],
+                cancellationToken));
 
     Target ServeDocs =>
         t => t

docfx.json

@@ -5,7 +5,7 @@
       "src": [
         {
           "files": [
-            "src/**/*.csproj"
+            "src/Invex.Process/bin/Release/net10.0/Invex.Process.dll"
           ]
         }
       ],