feat(kernel,artifacts): inject artifact-kind vocabulary into architect context

infrastructure/workflow/src/main/kotlin/com/correx/infrastructure/workflow/TomlWorkflowLoader.kt

@@ -41,6 +41,7 @@ private data class StageSection(
     @param:JsonProperty("token_budget") val tokenBudget: Int = 4096,
     @param:JsonProperty("max_retries") val maxRetries: Int = 3,
     @param:JsonProperty("requires_approval") val requiresApproval: Boolean = false,
+    @param:JsonProperty("inject_artifact_kinds") val injectArtifactKinds: Boolean = false,
 )
 
 // condition fields flattened into the transition row
@@ -105,6 +106,7 @@ class TomlWorkflowLoader(
                     s.prompt?.let { put("prompt", resolvePromptPath(it, workflowDir)) }
                     s.systemPrompt?.let { put("systemPrompt", resolvePromptPath(it, workflowDir)) }
                     if (s.requiresApproval) put("requiresApproval", "true")
+                    if (s.injectArtifactKinds) put("injectArtifactKinds", "true")
                 },
             )
         }

infrastructure/workflow/src/test/kotlin/com/correx/infrastructure/workflow/TomlWorkflowLoaderTest.kt

@@ -97,4 +97,24 @@ class TomlWorkflowLoaderTest {
         val path = Files.createTempFile("workflow", ".toml").also { it.writeText(bad) }
         assertThrows<IllegalStateException> { loader.load(path) }
     }
+
+    @Test
+    fun `inject_artifact_kinds true maps to metadata key`() {
+        val toml = validToml.replace(
+            "prompt = \"prompts/collect.md\"",
+            "prompt = \"prompts/collect.md\"\ninject_artifact_kinds = true",
+        )
+        val path = Files.createTempFile("workflow", ".toml").also { it.writeText(toml) }
+        val graph = loader.load(path)
+        val collectStage = graph.stages[graph.start]!!
+        assertEquals("true", collectStage.metadata["injectArtifactKinds"])
+    }
+
+    @Test
+    fun `inject_artifact_kinds absent means no metadata key`() {
+        val path = Files.createTempFile("workflow", ".toml").also { it.writeText(validToml) }
+        val graph = loader.load(path)
+        val collectStage = graph.stages[graph.start]!!
+        assertEquals(null, collectStage.metadata["injectArtifactKinds"])
+    }
 }