fix(task): preserve inherited extend task includes

Author: risu729

e2e/tasks/test_task_includes_mode_extend

@@ -96,6 +96,19 @@ assert_output_not_contains "$tasks" "root-dir-task"
 assert_output_contains "$tasks" "local-file-task"
 assert_output_contains "$tasks" "local-dir-task"
 
+cat <<'TOML' >mise.local.toml
+[task_config]
+includes = ["tasks.local.toml", "local-tasks"]
+includes_mode = "extend"
+TOML
+
+tasks="$(mise tasks ls)"
+assert_output_contains "$tasks" "default-task"
+assert_output_contains "$tasks" "root-file-task"
+assert_output_contains "$tasks" "root-dir-task"
+assert_output_contains "$tasks" "local-file-task"
+assert_output_contains "$tasks" "local-dir-task"
+
 cat <<'TOML' >mise.toml
 [env]
 ROOT_CONFIG = "1"
@@ -132,12 +145,11 @@ includes = ["tasks.local.toml", "local-tasks"]
 includes_mode = "extend"
 TOML
 
-# FIXME: This should be ci + local when the MISE_ENV include precedence bug is fixed.
 tasks="$(MISE_ENV=prod,ci mise tasks ls)"
 assert_output_not_contains "$tasks" "default-task"
 assert_output_not_contains "$tasks" "root-file-task"
 assert_output_not_contains "$tasks" "root-dir-task"
-assert_output_contains "$tasks" "prod-dir-task"
-assert_output_not_contains "$tasks" "ci-dir-task"
+assert_output_not_contains "$tasks" "prod-dir-task"
+assert_output_contains "$tasks" "ci-dir-task"
 assert_output_contains "$tasks" "local-file-task"
 assert_output_contains "$tasks" "local-dir-task"

schema/mise.json

@@ -2154,6 +2154,11 @@
             "type": "string"
           },
           "type": "array"
+        },
+        "includes_mode": {
+          "description": "controls whether task_config.includes replaces or extends inherited task includes",
+          "enum": ["replace", "extend", "additive"],
+          "type": "string"
         }
       }
     },