test(e2e): add extended thinking coverage to anthropic-instrumentation scenario

Add a streaming extended thinking operation (`anthropic-stream-thinking-operation`)
to the anthropic-instrumentation e2e scenario, covering the `thinking_delta` event
handling and `thinking` content block preservation fixed in this PR.

- Enable `supportsThinking` for SDK versions v0712, v0730, v0780, v0800
- Use `claude-sonnet-4-5` with `thinking: { type: "enabled", budget_tokens: 1024 }`
- Assert that thinking and text blocks both appear in captured output
- Normalize thinking content and variable token counts for stable snapshots
- Update span/payload snapshots for all four thinking-capable versions

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Qard

e2e/scenarios/anthropic-instrumentation/__snapshots__/anthropic-v0712.log-payloads.json

@@ -302,6 +302,56 @@
     },
     "type": "llm"
   },
+  {
+    "metadata": {
+      "operation": "stream-thinking"
+    },
+    "metrics": {
+      "end": 0,
+      "start": 0
+    },
+    "name": "anthropic-stream-thinking-operation",
+    "type": null
+  },
+  {
+    "input": [
+      {
+        "content": "What is 2+2? Reply with the number only.",
+        "role": "user"
+      }
+    ],
+    "metadata": {
+      "model": "claude-sonnet-4-5",
+      "provider": "anthropic",
+      "stop_reason": "end_turn",
+      "stop_sequence": null
+    },
+    "metrics": {
+      "completion_tokens": 0,
+      "end": 0,
+      "prompt_cache_creation_tokens": 0,
+      "prompt_cached_tokens": 0,
+      "prompt_tokens": 49,
+      "start": 0,
+      "time_to_first_token": 0,
+      "tokens": 0
+    },
+    "name": "anthropic.messages.create",
+    "output": {
+      "content": [
+        {
+          "thinking": "<thinking-content>",
+          "type": "thinking"
+        },
+        {
+          "text": "<thinking-answer>",
+          "type": "text"
+        }
+      ],
+      "role": "assistant"
+    },
+    "type": "llm"
+  },
   {
     "metadata": {
       "operation": "beta-create"

e2e/scenarios/anthropic-instrumentation/__snapshots__/anthropic-v0712.span-events.json

@@ -244,10 +244,10 @@
     "has_input": false,
     "has_output": false,
     "metadata": {
-      "operation": "beta-create"
+      "operation": "stream-thinking"
     },
     "metric_keys": [],
-    "name": "anthropic-beta-create-operation",
+    "name": "anthropic-stream-thinking-operation",
     "root_span_id": "<span:1>",
     "span_id": "<span:14>",
     "span_parents": [
@@ -259,7 +259,7 @@
     "has_input": true,
     "has_output": true,
     "metadata": {
-      "model": "claude-3-haiku-20240307",
+      "model": "claude-sonnet-4-5",
       "provider": "anthropic"
     },
     "metric_keys": [
@@ -282,10 +282,10 @@
     "has_input": false,
     "has_output": false,
     "metadata": {
-      "operation": "beta-stream"
+      "operation": "beta-create"
     },
     "metric_keys": [],
-    "name": "anthropic-beta-stream-operation",
+    "name": "anthropic-beta-create-operation",
     "root_span_id": "<span:1>",
     "span_id": "<span:16>",
     "span_parents": [
@@ -315,5 +315,43 @@
       "<span:16>"
     ],
     "type": "llm"
+  },
+  {
+    "has_input": false,
+    "has_output": false,
+    "metadata": {
+      "operation": "beta-stream"
+    },
+    "metric_keys": [],
+    "name": "anthropic-beta-stream-operation",
+    "root_span_id": "<span:1>",
+    "span_id": "<span:18>",
+    "span_parents": [
+      "<span:1>"
+    ],
+    "type": null
+  },
+  {
+    "has_input": true,
+    "has_output": true,
+    "metadata": {
+      "model": "claude-3-haiku-20240307",
+      "provider": "anthropic"
+    },
+    "metric_keys": [
+      "completion_tokens",
+      "prompt_cache_creation_tokens",
+      "prompt_cached_tokens",
+      "prompt_tokens",
+      "time_to_first_token",
+      "tokens"
+    ],
+    "name": "anthropic.messages.create",
+    "root_span_id": "<span:1>",
+    "span_id": "<span:19>",
+    "span_parents": [
+      "<span:18>"
+    ],
+    "type": "llm"
   }
 ]

e2e/scenarios/anthropic-instrumentation/__snapshots__/anthropic-v0730.log-payloads.json

@@ -302,6 +302,56 @@
     },
     "type": "llm"
   },
+  {
+    "metadata": {
+      "operation": "stream-thinking"
+    },
+    "metrics": {
+      "end": 0,
+      "start": 0
+    },
+    "name": "anthropic-stream-thinking-operation",
+    "type": null
+  },
+  {
+    "input": [
+      {
+        "content": "What is 2+2? Reply with the number only.",
+        "role": "user"
+      }
+    ],
+    "metadata": {
+      "model": "claude-sonnet-4-5",
+      "provider": "anthropic",
+      "stop_reason": "end_turn",
+      "stop_sequence": null
+    },
+    "metrics": {
+      "completion_tokens": 0,
+      "end": 0,
+      "prompt_cache_creation_tokens": 0,
+      "prompt_cached_tokens": 0,
+      "prompt_tokens": 49,
+      "start": 0,
+      "time_to_first_token": 0,
+      "tokens": 0
+    },
+    "name": "anthropic.messages.create",
+    "output": {
+      "content": [
+        {
+          "thinking": "<thinking-content>",
+          "type": "thinking"
+        },
+        {
+          "text": "<thinking-answer>",
+          "type": "text"
+        }
+      ],
+      "role": "assistant"
+    },
+    "type": "llm"
+  },
   {
     "metadata": {
       "operation": "beta-create"

e2e/scenarios/anthropic-instrumentation/__snapshots__/anthropic-v0730.span-events.json

@@ -244,10 +244,10 @@
     "has_input": false,
     "has_output": false,
     "metadata": {
-      "operation": "beta-create"
+      "operation": "stream-thinking"
     },
     "metric_keys": [],
-    "name": "anthropic-beta-create-operation",
+    "name": "anthropic-stream-thinking-operation",
     "root_span_id": "<span:1>",
     "span_id": "<span:14>",
     "span_parents": [
@@ -259,7 +259,7 @@
     "has_input": true,
     "has_output": true,
     "metadata": {
-      "model": "claude-3-haiku-20240307",
+      "model": "claude-sonnet-4-5",
       "provider": "anthropic"
     },
     "metric_keys": [
@@ -282,10 +282,10 @@
     "has_input": false,
     "has_output": false,
     "metadata": {
-      "operation": "beta-stream"
+      "operation": "beta-create"
     },
     "metric_keys": [],
-    "name": "anthropic-beta-stream-operation",
+    "name": "anthropic-beta-create-operation",
     "root_span_id": "<span:1>",
     "span_id": "<span:16>",
     "span_parents": [
@@ -315,5 +315,43 @@
       "<span:16>"
     ],
     "type": "llm"
+  },
+  {
+    "has_input": false,
+    "has_output": false,
+    "metadata": {
+      "operation": "beta-stream"
+    },
+    "metric_keys": [],
+    "name": "anthropic-beta-stream-operation",
+    "root_span_id": "<span:1>",
+    "span_id": "<span:18>",
+    "span_parents": [
+      "<span:1>"
+    ],
+    "type": null
+  },
+  {
+    "has_input": true,
+    "has_output": true,
+    "metadata": {
+      "model": "claude-3-haiku-20240307",
+      "provider": "anthropic"
+    },
+    "metric_keys": [
+      "completion_tokens",
+      "prompt_cache_creation_tokens",
+      "prompt_cached_tokens",
+      "prompt_tokens",
+      "time_to_first_token",
+      "tokens"
+    ],
+    "name": "anthropic.messages.create",
+    "root_span_id": "<span:1>",
+    "span_id": "<span:19>",
+    "span_parents": [
+      "<span:18>"
+    ],
+    "type": "llm"
   }
 ]

e2e/scenarios/anthropic-instrumentation/__snapshots__/anthropic-v0780.log-payloads.json

@@ -302,6 +302,56 @@
     },
     "type": "llm"
   },
+  {
+    "metadata": {
+      "operation": "stream-thinking"
+    },
+    "metrics": {
+      "end": 0,
+      "start": 0
+    },
+    "name": "anthropic-stream-thinking-operation",
+    "type": null
+  },
+  {
+    "input": [
+      {
+        "content": "What is 2+2? Reply with the number only.",
+        "role": "user"
+      }
+    ],
+    "metadata": {
+      "model": "claude-sonnet-4-5",
+      "provider": "anthropic",
+      "stop_reason": "end_turn",
+      "stop_sequence": null
+    },
+    "metrics": {
+      "completion_tokens": 0,
+      "end": 0,
+      "prompt_cache_creation_tokens": 0,
+      "prompt_cached_tokens": 0,
+      "prompt_tokens": 49,
+      "start": 0,
+      "time_to_first_token": 0,
+      "tokens": 0
+    },
+    "name": "anthropic.messages.create",
+    "output": {
+      "content": [
+        {
+          "thinking": "<thinking-content>",
+          "type": "thinking"
+        },
+        {
+          "text": "<thinking-answer>",
+          "type": "text"
+        }
+      ],
+      "role": "assistant"
+    },
+    "type": "llm"
+  },
   {
     "metadata": {
       "operation": "beta-create"