fix(apps): send workflowId not path from CLI; wire sandboxRoot and systemPromptPath in server; update prompts and fixtures

apps/cli/src/main/kotlin/com/correx/apps/cli/commands/RunCommand.kt

@@ -97,6 +97,9 @@ class RunCommand : CliktCommand(name = "run") {
         }
     }
 
+    private fun resolveWorkflowId(path: String): String =
+        java.nio.file.Path.of(path).fileName.toString().removeSuffix(".toml")
+
     private suspend fun startSession(
         client: HttpClient,
         host: String,
@@ -105,7 +108,7 @@ class RunCommand : CliktCommand(name = "run") {
     ): String? = runCatching {
         val resp = client.post("http://$host:$portInt/sessions") {
             contentType(ContentType.Application.Json)
-            setBody(StartSessionRequest(workflowId = workflow, sessionId = sessionId))
+            setBody(StartSessionRequest(workflowId = resolveWorkflowId(workflow), sessionId = sessionId))
         }
         resp.body<StartSessionResponse>().sessionId
     }.getOrElse { e ->