fix: complete Kling idempotency inputs

Include every request field that can alter Kling video, image, avatar, or lip-sync media in the public idempotency contract. Add a shared regression matrix that detects future cache-key collisions while excluding transport-only controls.

tools/avatar/kling_avatar.py

@@ -124,7 +124,17 @@ class KlingAvatar(BaseTool):
         backoff_seconds=2.0,
         retryable_errors=["1302", "1303", "5000", "5001", "5002"],
     )
-    idempotency_key_fields = ["image_url", "image_path", "audio_id", "sound_file", "sound_file_path", "mode"]
+    idempotency_key_fields = [
+        "image_url",
+        "image_path",
+        "audio_id",
+        "sound_file",
+        "sound_file_url",
+        "sound_file_path",
+        "audio_path",
+        "prompt",
+        "mode",
+    ]
     side_effects = ["paid remote generation via official Kling API", "writes avatar video to output_path"]
     user_visible_verification = ["Watch generated avatar video for identity preservation and mouth motion"]
     quality_score = 0.82

tools/avatar/kling_lip_sync.py

@@ -139,15 +139,23 @@ class KlingLipSync(BaseTool):
         retryable_errors=["1302", "1303", "5000", "5001", "5002"],
     )
     idempotency_key_fields = [
+        "operation",
         "video_id",
         "video_url",
         "session_id",
         "face_id",
+        "face_choose",
+        "auto_select_face",
         "audio_id",
+        "sound_file",
+        "sound_file_url",
         "sound_file_path",
+        "audio_path",
         "sound_start_time",
         "sound_end_time",
         "sound_insert_time",
+        "sound_volume",
+        "original_audio_volume",
     ]
     side_effects = [
         "paid remote generation via official Kling API",

tools/graphics/kling_official_image.py

@@ -122,13 +122,25 @@ class KlingOfficialImage(BaseTool):
     )
     idempotency_key_fields = [
         "prompt",
+        "negative_prompt",
+        "operation",
         "api_family",
         "model_name",
         "image_url",
         "image_path",
+        "image_urls",
+        "image_paths",
+        "image_list",
+        "image_reference",
+        "image_fidelity",
+        "human_fidelity",
         "aspect_ratio",
         "resolution",
         "n",
+        "result_type",
+        "series_amount",
+        "element_list",
+        "watermark",
     ]
     side_effects = [
         "paid remote generation via official Kling API",

tools/video/kling_official_video.py

@@ -142,13 +142,33 @@ class KlingOfficialVideo(BaseTool):
     )
     idempotency_key_fields = [
         "prompt",
+        "negative_prompt",
         "operation",
         "api_family",
         "model_name",
-        "reference_image_url",
-        "reference_image_path",
+        "model_variant",
         "duration",
         "aspect_ratio",
+        "resolution",
+        "mode",
+        "sound",
+        "cfg_scale",
+        "camera_control",
+        "reference_image_url",
+        "reference_image_path",
+        "reference_tail_image_url",
+        "reference_tail_image_path",
+        "reference_image_urls",
+        "reference_image_paths",
+        "reference_video_url",
+        "video_urls",
+        "image_list",
+        "video_list",
+        "element_list",
+        "multi_shot",
+        "shot_type",
+        "multi_prompt",
+        "watermark",
     ]
     side_effects = [
         "paid remote generation via official Kling API",