Harden recording renderer CLI bounds

tests/CMakeLists.txt

@@ -367,6 +367,14 @@ if(TARGET pano_cli)
         LABELS "renderer;integration;desktop-fast"
         PASS_REGULAR_EXPRESSION "\"backend\":\"recording\".*\"width\":32.*\"height\":16.*\"commands\":8.*\"drawCommands\":1.*\"readbackCommands\":1.*\"readbackBytes\":2048")
 
+    add_test(NAME pano_cli_record_render_rejects_oversized_target
+        COMMAND "${CMAKE_COMMAND}"
+            -DPANO_CLI=$<TARGET_FILE:pano_cli>
+            "-DEXPECTED_OUTPUT=texture byte size exceeds the configured limit"
+            -P "${CMAKE_CURRENT_SOURCE_DIR}/cmake/expect_pano_cli_record_render_failure.cmake")
+    set_tests_properties(pano_cli_record_render_rejects_oversized_target PROPERTIES
+        LABELS "renderer;integration;desktop-fast")
+
     add_test(NAME pano_cli_simulate_document_edits_smoke
         COMMAND pano_cli simulate-document-edits --width 128 --height 64)
     set_tests_properties(pano_cli_simulate_document_edits_smoke PROPERTIES

tests/cmake/expect_pano_cli_record_render_failure.cmake

@@ -0,0 +1,24 @@
+if(NOT DEFINED PANO_CLI)
+    message(FATAL_ERROR "PANO_CLI must be set")
+endif()
+
+if(NOT DEFINED EXPECTED_OUTPUT)
+    message(FATAL_ERROR "EXPECTED_OUTPUT must be set")
+endif()
+
+execute_process(
+    COMMAND "${PANO_CLI}" record-render --width 32768 --height 32768
+    RESULT_VARIABLE result
+    OUTPUT_VARIABLE output
+    ERROR_VARIABLE error)
+
+if(result EQUAL 0)
+    message(FATAL_ERROR "Expected pano_cli record-render to fail, but it exited 0")
+endif()
+
+set(combined_output "${output}${error}")
+string(FIND "${combined_output}" "${EXPECTED_OUTPUT}" expected_index)
+if(expected_index LESS 0)
+    message(FATAL_ERROR
+        "Expected output to contain '${EXPECTED_OUTPUT}', got: ${combined_output}")
+endif()