Migrate examples and guidance and remove legacy test harness

docs/integrations/subprocess.md

@@ -7,10 +7,11 @@ The [CLI reference](../cli.md) owns command syntax, streams, and exit semantics;
 ## Invocation
 
 Use an argument array with the transcript path and required glossary argument,
-following the [process examples](../cli.md#process-examples). For machine workflows,
+following the [process examples](../cli.md#commands-and-help). For machine workflows,
 select explicit transcript and report destinations rather than depending on the
 working directory or run-directory retention. Supplying a configuration path also
-makes file selection predictable; inherited environment overrides still apply.
+makes file selection predictable; only explicitly referenced credential variables
+are read from the environment.
 
 Resolve the executable deliberately and set the child's working directory so
 relative input/output paths and reported artifact paths have a known base.
@@ -20,7 +21,7 @@ or cancellation in the parent process when needed.
 ## Result Handling
 
 Interpret the exit result according to the
-[CLI output and exit contract](../cli.md#process-output-and-exit-behavior).
+[CLI output and exit contract](../cli.md#streams-and-exit-status).
 Consume transcript/report data through the
 [output-file contract](output-files.md), and treat stderr as human-readable detail.
 The report supplements the exit result: it may be absent after early failures,
@@ -37,4 +38,4 @@ alone establishes successful completion.
 
 - [Transcript and glossary inputs](transcript-glossary-files.md)
 - [LLM endpoint compatibility](openai-compatible-llm.md)
-- [Configuration inspection commands](../cli.md#configuration-commands)
+- [Configuration inspection commands](../cli.md#commands-and-help)