Add Claude Opus 4.7 to model list (#1282)

* Add Claude Opus 4.7 to model list (anthropic, openrouter)

Adds Anthropic's new Opus 4.7 model with both Anthropic and OpenRouter
providers. Introduces CLAUDE_OPUS_4_7_ANTHROPIC_THINKING_LEVELS to
support the new "xhigh" and "max" effort levels exclusive to Opus 4.7.

* Apply zero-sum swap: demote Opus 4.6 from suggested/featured

Opus 4.7 now carries featured_rank=2, editorial_notes, suggested_for_evals,
and suggested_for_data_gen. Removing the same flags from Opus 4.6 keeps the
suggested/featured count stable across the Claude Opus family.

https://claude.ai/code/session_01Xnfzt91McoMdqaiRv1g6xg

* Add PDF support to OpenRouter provider for Opus 4.7

Adds KilnMimeType.PDF to multimodal_mime_types and sets
multimodal_requires_pdf_as_image=True (OpenRouter's PDF routing through
Mistral OCR breaks LiteLLM parsing, so PDFs must be sent as images).

https://claude.ai/code/session_01Xnfzt91McoMdqaiRv1g6xg

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: tawnymanticore

libs/core/kiln_ai/adapters/ml_model_list.py

@@ -140,6 +140,7 @@ class ModelName(str, Enum):
     claude_opus_4_1 = "claude_opus_4_1"
     claude_opus_4_5 = "claude_opus_4_5"
     claude_opus_4_6 = "claude_opus_4_6"
+    claude_opus_4_7 = "claude_opus_4_7"
     gemini_1_5_flash = "gemini_1_5_flash"
     gemini_1_5_flash_8b = "gemini_1_5_flash_8b"
     gemini_1_5_pro = "gemini_1_5_pro"
@@ -505,6 +506,14 @@ class KilnModel(BaseModel):
     "High": "high",
 }
 
+CLAUDE_OPUS_4_7_ANTHROPIC_THINKING_LEVELS = {
+    "Low": "low",
+    "Medium": "medium",
+    "High": "high",
+    "Extra High": "xhigh",
+    "Max": "max",
+}
+
 
 built_in_models: List[KilnModel] = [
     # GPT 5.4
@@ -1907,17 +1916,17 @@ class KilnModel(BaseModel):
             ),
         ],
     ),
-    # Claude Opus 4.6
+    # Claude Opus 4.7
     KilnModel(
         family=ModelFamily.claude,
-        name=ModelName.claude_opus_4_6,
-        friendly_name="Claude Opus 4.6",
+        name=ModelName.claude_opus_4_7,
+        friendly_name="Claude Opus 4.7",
         featured_rank=2,
         editorial_notes="Anthropic's best Claude model. Expensive, but often the best.",
         providers=[
             KilnModelProvider(
                 name=ModelProviderName.openrouter,
-                model_id="anthropic/claude-opus-4.6",
+                model_id="anthropic/claude-opus-4.7",
                 structured_output_mode=StructuredOutputMode.json_schema,
                 openrouter_reasoning_object=True,
                 available_thinking_levels=CLAUDE_OPENROUTER_THINKING_LEVELS,
@@ -1927,7 +1936,9 @@ class KilnModel(BaseModel):
                 supports_doc_extraction=True,
                 supports_vision=True,
                 multimodal_capable=True,
+                multimodal_requires_pdf_as_image=True,
                 multimodal_mime_types=[
+                    KilnMimeType.PDF,
                     KilnMimeType.TXT,
                     KilnMimeType.MD,
                     KilnMimeType.JPG,
@@ -1936,10 +1947,10 @@ class KilnModel(BaseModel):
             ),
             KilnModelProvider(
                 name=ModelProviderName.anthropic,
-                model_id="claude-opus-4-6",
+                model_id="claude-opus-4-7",
                 structured_output_mode=StructuredOutputMode.json_schema,
                 temp_top_p_exclusive=True,
-                available_thinking_levels=CLAUDE_ANTHROPIC_EFFORT_THINKING_LEVELS,
+                available_thinking_levels=CLAUDE_OPUS_4_7_ANTHROPIC_THINKING_LEVELS,
                 default_thinking_level="high",
                 suggested_for_evals=True,
                 suggested_for_data_gen=True,
@@ -1956,6 +1967,49 @@ class KilnModel(BaseModel):
             ),
         ],
     ),
+    # Claude Opus 4.6
+    KilnModel(
+        family=ModelFamily.claude,
+        name=ModelName.claude_opus_4_6,
+        friendly_name="Claude Opus 4.6",
+        providers=[
+            KilnModelProvider(
+                name=ModelProviderName.openrouter,
+                model_id="anthropic/claude-opus-4.6",
+                structured_output_mode=StructuredOutputMode.json_schema,
+                openrouter_reasoning_object=True,
+                available_thinking_levels=CLAUDE_OPENROUTER_THINKING_LEVELS,
+                default_thinking_level="none",
+                supports_doc_extraction=True,
+                supports_vision=True,
+                multimodal_capable=True,
+                multimodal_mime_types=[
+                    KilnMimeType.TXT,
+                    KilnMimeType.MD,
+                    KilnMimeType.JPG,
+                    KilnMimeType.PNG,
+                ],
+            ),
+            KilnModelProvider(
+                name=ModelProviderName.anthropic,
+                model_id="claude-opus-4-6",
+                structured_output_mode=StructuredOutputMode.json_schema,
+                temp_top_p_exclusive=True,
+                available_thinking_levels=CLAUDE_ANTHROPIC_EFFORT_THINKING_LEVELS,
+                default_thinking_level="high",
+                supports_doc_extraction=True,
+                supports_vision=True,
+                multimodal_capable=True,
+                multimodal_mime_types=[
+                    KilnMimeType.PDF,
+                    KilnMimeType.TXT,
+                    KilnMimeType.MD,
+                    KilnMimeType.JPG,
+                    KilnMimeType.PNG,
+                ],
+            ),
+        ],
+    ),
     # Claude Opus 4.5
     KilnModel(
         family=ModelFamily.claude,