diff --git a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
index b5c3379..0c30575 100644
--- a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
@@ -17,7 +17,7 @@
 # Switch to lenient shell so we are more likely to get past failing extra_cmds.
 SHELL ["/bin/bash", "-uo", "pipefail", "-c"]
 
-RUN echo "Go test project environment ready" || true
+
 
 # Switch back to strict shell after extra_cmds.
 SHELL ["/bin/bash", "-euxo", "pipefail", "-c"]
diff --git a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr
index cc01241..84f397b 100644
--- a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr
@@ -1,14 +1,14 @@
 httprr trace v1
-4078 1691
+4076 1669
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3881
+Content-Length: 3879
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
 {
- "model": "claude-3-7-sonnet-20250219",
+ "model": "claude-sonnet-4-20250514",
  "messages": [
   {
    "role": "user",
@@ -54,24 +54,24 @@
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
 Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-20T02:20:23Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:26:21Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-20T02:20:25Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:26:23Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-20T02:20:20Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:26:20Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
 Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-20T02:20:23Z
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:26:21Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 94285ab63f6f7ad9-SJC
+Cf-Ray: 944f2f1ffec8cf2e-SJC
 Content-Type: application/json
-Date: Tue, 20 May 2025 02:20:25 GMT
-Request-Id: req_011CPHywwgnLpb2hajs3yWSs
+Date: Sat, 24 May 2025 19:26:23 GMT
+Request-Id: req_011CPSuRQeiLDnd8ho1ZABi6
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01J68vxiHHgahgJDGCn68rAP","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the provided template and README.md, I'll call the dockerfile tool. Since this appears to be a simple Go test project with no specific requirements beyond what's already in the template, I'll keep the extra commands minimal."},{"type":"tool_use","id":"toolu_01J4NE5Z47JHU1KCH4kpBwvD","name":"dockerfile","input":{"extra_cmds":"RUN echo \"Go test project environment ready\" || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1339,"cache_read_input_tokens":0,"output_tokens":113}}
\ No newline at end of file
+{"id":"msg_01TJGzpq3ksGASSiBNydHY6T","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Looking at the repository content, this appears to be a simple Go test project. The Dockerfile template already includes comprehensive Go development tools and dependencies, so no additional commands are needed for this straightforward setup."},{"type":"tool_use","id":"toolu_01UBV1k5w8RceegtCA6Xh1tS","name":"dockerfile","input":{"extra_cmds":""}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1339,"cache_read_input_tokens":0,"output_tokens":94,"service_tier":"standard"}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile b/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
index 109cc25..0539790 100644
--- a/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
@@ -17,12 +17,7 @@
 # Switch to lenient shell so we are more likely to get past failing extra_cmds.
 SHELL ["/bin/bash", "-uo", "pipefail", "-c"]
 
-RUN if [ -f requirements.txt ]; then pip3 install -r requirements.txt || true; fi
 
-RUN if [ -f package.json ]; then npm install || true; fi
-
-# Install any project-specific linters and tools
-RUN go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest || true
 
 # Switch back to strict shell after extra_cmds.
 SHELL ["/bin/bash", "-euxo", "pipefail", "-c"]
diff --git a/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr b/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
index c1e009f..6393ae9 100644
--- a/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
@@ -1,14 +1,14 @@
 httprr trace v1
-3831 2022
+3829 1654
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3634
+Content-Length: 3632
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
 {
- "model": "claude-3-7-sonnet-20250219",
+ "model": "claude-sonnet-4-20250514",
  "messages": [
   {
    "role": "user",
@@ -49,25 +49,25 @@
 }HTTP/2.0 200 OK
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
-Anthropic-Ratelimit-Input-Tokens-Remaining: 191000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-20T02:20:41Z
+Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:26:34Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-20T02:20:41Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:26:35Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-20T02:20:35Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:26:32Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
-Anthropic-Ratelimit-Tokens-Remaining: 271000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-20T02:20:41Z
+Anthropic-Ratelimit-Tokens-Remaining: 280000
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:26:34Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 94285b132c007ad9-SJC
+Cf-Ray: 944f2f6bfce6cf2e-SJC
 Content-Type: application/json
-Date: Tue, 20 May 2025 02:20:41 GMT
-Request-Id: req_011CPHyy3GAwqsKthn5XDGWq
+Date: Sat, 24 May 2025 19:26:35 GMT
+Request-Id: req_011CPSuSK4eHncWRpcdktYD5
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01CfhEVAodDgD6uP9AG7e7tH","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"I'll help you create a Dockerfile for your Go project by calling the dockerfile tool with appropriate extra commands.\n\nFrom the template you provided, I can see this is primarily a Go project, but may have Python dependencies as well. I'll keep the extra commands minimal while ensuring Python setup commands can continue even if they fail."},{"type":"tool_use","id":"toolu_01MKdb5bTTvguR3fuF63dzc3","name":"dockerfile","input":{"extra_cmds":"RUN if [ -f requirements.txt ]; then pip3 install -r requirements.txt || true; fi\n\nRUN if [ -f package.json ]; then npm install || true; fi\n\n# Install any project-specific linters and tools\nRUN go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1295,"cache_read_input_tokens":0,"output_tokens":206}}
\ No newline at end of file
+{"id":"msg_01FLx3RCrgBwRUJPmaVHcqJh","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"I'll call the dockerfile tool to create a Dockerfile for this Go project. Since this appears to be a straightforward Go project and the base template already includes comprehensive tooling, I'll keep the extra commands minimal."},{"type":"tool_use","id":"toolu_016D9ZU3qDRwiYQkx2zCd6Dz","name":"dockerfile","input":{"extra_cmds":""}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1295,"cache_read_input_tokens":0,"output_tokens":97,"service_tier":"standard"}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr b/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr
index 3625ecb..1662f39 100644
--- a/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr
@@ -1,14 +1,14 @@
 httprr trace v1
-4093 1665
+4091 1712
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3896
+Content-Length: 3894
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
 {
- "model": "claude-3-7-sonnet-20250219",
+ "model": "claude-sonnet-4-20250514",
  "messages": [
   {
    "role": "user",
@@ -54,24 +54,24 @@
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
 Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-20T02:20:34Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:26:30Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-20T02:20:35Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:26:32Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-20T02:20:30Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:26:28Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
 Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-20T02:20:34Z
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:26:30Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 94285af4ddfb7ad9-SJC
+Cf-Ray: 944f2f52bfc6cf2e-SJC
 Content-Type: application/json
-Date: Tue, 20 May 2025 02:20:35 GMT
-Request-Id: req_011CPHyxgZj372fX717kTeUi
+Date: Sat, 24 May 2025 19:26:32 GMT
+Request-Id: req_011CPSuS1M2svDB9uvvBCdj1
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_018psMPiYESwxjJcicWRnimT","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"I'll help you create a Dockerfile using the template you provided. Based on the content of the readme.md file, I can see that the project requires the `dot` tool for running tests."},{"type":"tool_use","id":"toolu_01CYpUAAkSTZvo3MWooeqVbj","name":"dockerfile","input":{"extra_cmds":"RUN apt-get update && apt-get install -y --no-install-recommends graphviz || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1344,"cache_read_input_tokens":0,"output_tokens":120}}
\ No newline at end of file
+{"id":"msg_0141cdBZsjRWogeq5ekbTE2s","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Based on the repository context, I can see this is a Go project that requires the `dot` tool (from Graphviz) to run tests. I'll create a Dockerfile with minimal extra commands to install this dependency."},{"type":"tool_use","id":"toolu_018r92XQ2Che5GXTNKH23t9t","name":"dockerfile","input":{"extra_cmds":"RUN apt-get update && apt-get install -y --no-install-recommends graphviz || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1344,"cache_read_input_tokens":0,"output_tokens":126,"service_tier":"standard"}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile b/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
index 8bd6ceb..37bce4a 100644
--- a/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
@@ -17,15 +17,9 @@
 # Switch to lenient shell so we are more likely to get past failing extra_cmds.
 SHELL ["/bin/bash", "-uo", "pipefail", "-c"]
 
-RUN apt-get update && apt-get install -y python3.11 python3.11-venv python3-pip || true
-
-# Install DVC (Data Version Control)
-RUN pip3 install dvc || true
-
-# Set up Python 3.11 as the default Python version if available
-RUN if command -v python3.11 &> /dev/null; then \
-      update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1; \
-    fi || true
+RUN apt-get update && apt-get install -y --no-install-recommends python3.11 python3.11-venv python3.11-dev python3-pip || true
+RUN python3.11 -m pip install --upgrade pip || true
+RUN python3.11 -m pip install dvc || true
 
 # Switch back to strict shell after extra_cmds.
 SHELL ["/bin/bash", "-euxo", "pipefail", "-c"]
diff --git a/dockerimg/testdata/testcreatedockerfile_python_misery.httprr b/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
index e4b1e27..8817d9d 100644
--- a/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
@@ -1,14 +1,14 @@
 httprr trace v1
-4116 1981
+4114 1849
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3919
+Content-Length: 3917
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
 {
- "model": "claude-3-7-sonnet-20250219",
+ "model": "claude-sonnet-4-20250514",
  "messages": [
   {
    "role": "user",
@@ -54,24 +54,24 @@
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
 Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-20T02:20:44Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:26:37Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
-Anthropic-Ratelimit-Output-Tokens-Remaining: 79000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-20T02:20:47Z
+Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:26:39Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-20T02:20:42Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:26:35Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
-Anthropic-Ratelimit-Tokens-Remaining: 279000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-20T02:20:44Z
+Anthropic-Ratelimit-Tokens-Remaining: 280000
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:26:37Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 94285b3aacca7ad9-SJC
+Cf-Ray: 944f2f825eb7cf2e-SJC
 Content-Type: application/json
-Date: Tue, 20 May 2025 02:20:47 GMT
-Request-Id: req_011CPHyyWKrFQT4xf4BTF6pR
+Date: Sat, 24 May 2025 19:26:39 GMT
+Request-Id: req_011CPSuSZvr61mxd6kuxhH4D
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_0157U2SFYKMiWTV8zs7V7JHY","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the README.md contents, I can see that this project requires Python 3.11 and the DVC (Data Version Control) tool. I'll create a Dockerfile with extra commands to set up these requirements."},{"type":"tool_use","id":"toolu_01FX5RkeZt8mwx6vsBwVGowR","name":"dockerfile","input":{"extra_cmds":"RUN apt-get update && apt-get install -y python3.11 python3.11-venv python3-pip || true\n\n# Install DVC (Data Version Control)\nRUN pip3 install dvc || true\n\n# Set up Python 3.11 as the default Python version if available\nRUN if command -v python3.11 &> /dev/null; then \\\n      update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1; \\\n    fi || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1351,"cache_read_input_tokens":0,"output_tokens":227}}
\ No newline at end of file
+{"id":"msg_01M5T43NcRNzThpLjouPwhyb","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Based on the repository content, I can see this is a Go project that also requires Python 3.11 and the dvc tool. I'll create a Dockerfile with the necessary extra commands to set up this environment."},{"type":"tool_use","id":"toolu_011poaC5Ci5MDx4gECtv9E4K","name":"dockerfile","input":{"extra_cmds":"RUN apt-get update && apt-get install -y --no-install-recommends python3.11 python3.11-venv python3.11-dev python3-pip || true\nRUN python3.11 -m pip install --upgrade pip || true\nRUN python3.11 -m pip install dvc || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1351,"cache_read_input_tokens":0,"output_tokens":177,"service_tier":"standard"}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile
index f185d5f..65c657e 100644
--- a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile
@@ -17,10 +17,8 @@
 # Switch to lenient shell so we are more likely to get past failing extra_cmds.
 SHELL ["/bin/bash", "-uo", "pipefail", "-c"]
 
-RUN npm install -g corepack && corepack enable || true
-
-# Install Go dependencies if go.mod exists
-RUN if [ -f go.mod ]; then go mod tidy; fi
+RUN npm install -g corepack || true
+RUN corepack enable || true
 
 # Switch back to strict shell after extra_cmds.
 SHELL ["/bin/bash", "-euxo", "pipefail", "-c"]
diff --git a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr
index fe0a9f3..e34bf21 100644
--- a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr
@@ -1,14 +1,14 @@
 httprr trace v1
-4565 1800
+4563 1846
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 4368
+Content-Length: 4366
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
 {
- "model": "claude-3-7-sonnet-20250219",
+ "model": "claude-sonnet-4-20250514",
  "messages": [
   {
    "role": "user",
@@ -58,24 +58,24 @@
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
 Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-20T02:20:27Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:26:25Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-20T02:20:30Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:26:28Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-20T02:20:25Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:26:23Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
 Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-20T02:20:27Z
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:26:25Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 94285ad34ffd7ad9-SJC
+Cf-Ray: 944f2f33ebdccf2e-SJC
 Content-Type: application/json
-Date: Tue, 20 May 2025 02:20:30 GMT
-Request-Id: req_011CPHyxHeKwp1TA8DYU9W5T
+Date: Sat, 24 May 2025 19:26:28 GMT
+Request-Id: req_011CPSuReH1pDY9VQMZwn6Qt
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01APg7EWN4E6QjShBAYpN46n","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the provided files, I'll create a Dockerfile for this Go project. The project appears to be a straightforward Go application with some Node.js dependencies, as indicated by the GitHub workflow file that sets up Node.js 18 and enables corepack."},{"type":"tool_use","id":"toolu_01ATsE2NRD1McL3RHPdzEQtf","name":"dockerfile","input":{"extra_cmds":"RUN npm install -g corepack && corepack enable || true\n\n# Install Go dependencies if go.mod exists\nRUN if [ -f go.mod ]; then go mod tidy; fi"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1468,"cache_read_input_tokens":0,"output_tokens":155}}
\ No newline at end of file
+{"id":"msg_01E9gngXiQYhF4VHLegSAfSS","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Looking at this repository, I can see it's a Go project with some Node.js dependencies based on the GitHub workflow. The workflow shows that it uses Node.js 18 and corepack for package management.\n\nSince the base Dockerfile template already includes comprehensive Go tooling and Node.js/npm, I'll add the corepack setup that's shown in the CI workflow."},{"type":"tool_use","id":"toolu_01LWnxt2d72pCD1Z4nrg3yxX","name":"dockerfile","input":{"extra_cmds":"RUN npm install -g corepack || true\nRUN corepack enable || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1468,"cache_read_input_tokens":0,"output_tokens":155,"service_tier":"standard"}}
\ No newline at end of file
diff --git a/llm/conversation/testdata/basic_convo.httprr b/llm/conversation/testdata/basic_convo.httprr
index 663de8d..7f9886d 100644
--- a/llm/conversation/testdata/basic_convo.httprr
+++ b/llm/conversation/testdata/basic_convo.httprr
@@ -1,14 +1,14 @@
 httprr trace v1
-457 1329
+455 1424
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 261
+Content-Length: 259
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
 {
- "model": "claude-3-7-sonnet-20250219",
+ "model": "claude-sonnet-4-20250514",
  "messages": [
   {
    "role": "user",
@@ -28,35 +28,36 @@
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
 Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-03-11T17:45:06Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:27:38Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
-Anthropic-Ratelimit-Output-Tokens-Remaining: 79000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-03-11T17:45:07Z
+Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:27:38Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-03-11T17:45:05Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:27:36Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
-Anthropic-Ratelimit-Tokens-Remaining: 279000
-Anthropic-Ratelimit-Tokens-Reset: 2025-03-11T17:45:06Z
+Anthropic-Ratelimit-Tokens-Remaining: 280000
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:27:38Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 91ecdd10fdc3f97f-SJC
+Cf-Ray: 944f30fd0f0a15d4-SJC
 Content-Type: application/json
-Date: Tue, 11 Mar 2025 17:45:07 GMT
-Request-Id: req_01LBtxMdNzxDcDVPGJSh7giv
+Date: Sat, 24 May 2025 19:27:38 GMT
+Request-Id: req_011CPSuX337qwfNzNzGSwG3b
 Server: cloudflare
+Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01S1uUyUsTaKPBKuDUGGX8J2","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Hello, Cornelius! It's nice to meet you. How are you doing today? Is there something I can help you with?"}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":15,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":31}}779 1286
+{"id":"msg_01L127Hi3H8X613Fh8HojDgk","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Hello Cornelius! It's nice to meet you. How are you doing today? Is there anything I can help you with?"}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":15,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":30,"service_tier":"standard"}}775 1394
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 583
+Content-Length: 579
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
 {
- "model": "claude-3-7-sonnet-20250219",
+ "model": "claude-sonnet-4-20250514",
  "messages": [
   {
    "role": "user",
@@ -72,7 +73,7 @@
    "content": [
     {
      "type": "text",
-     "text": "Hello, Cornelius! It's nice to meet you. How are you doing today? Is there something I can help you with?"
+     "text": "Hello Cornelius! It's nice to meet you. How are you doing today? Is there anything I can help you with?"
     }
    ]
   },
@@ -94,23 +95,24 @@
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
 Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-03-11T17:45:07Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:27:39Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-03-11T17:45:07Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:27:40Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-03-11T17:45:07Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:27:38Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
 Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-03-11T17:45:07Z
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:27:39Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 91ecdd1ae9a6f97f-SJC
+Cf-Ray: 944f31098c9e15d4-SJC
 Content-Type: application/json
-Date: Tue, 11 Mar 2025 17:45:07 GMT
-Request-Id: req_01MBf3RWXNfQgwhVRwwkBYSn
+Date: Sat, 24 May 2025 19:27:40 GMT
+Request-Id: req_011CPSuXBim8ntiKJDjvFUWG
 Server: cloudflare
+Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01FGz6DeWeDpspJG8cuxyVE9","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Your name is Cornelius, as you mentioned in your introduction."}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":54,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":17}}
\ No newline at end of file
+{"id":"msg_01TiEuRrzLgJEfBUNhZ9Am3B","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Your name is Cornelius, as you introduced yourself in your first message."}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":53,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":19,"service_tier":"standard"}}
\ No newline at end of file
diff --git a/loop/testdata/agent_loop.httprr b/loop/testdata/agent_loop.httprr
index 9db732a..9da5ea3 100644
--- a/loop/testdata/agent_loop.httprr
+++ b/loop/testdata/agent_loop.httprr
@@ -1,14 +1,14 @@
 httprr trace v1
-17928 2464
+18097 2496
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 17730
+Content-Length: 17899
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
 {
- "model": "claude-3-7-sonnet-20250219",
+ "model": "claude-sonnet-4-20250514",
  "messages": [
   {
    "role": "user",
@@ -543,7 +543,7 @@
  ],
  "system": [
   {
-   "text": "You are the expert software engineer and architect powering Sketch,\nan agentic coding environment that helps users accomplish coding tasks through autonomous analysis and implementation.\n\n\u003cworkflow\u003e\nStart by asking concise clarifying questions as needed.\nOnce the intent is clear, work autonomously.\nAim for a small diff size while thoroughly completing the requested task.\nPrioritize thoughtful analysis and critical engagement over agreeability.\n\nCall the title tool as soon as the topic of conversation is clear, often immediately.\n\nBreak down the overall goal into a series of smaller steps.\n(The first step is often: \"Make a plan.\")\nThen execute each step using tools.\nUpdate the plan if you have encountered problems or learned new information.\n\nWhen in doubt about a step, follow this broad workflow:\n\n- Think about how the current step fits into the overall plan.\n- Do research. Good tool choices: bash, think, keyword_search\n- Make edits.\n- Repeat.\n\nTo make edits reliably and efficiently, first think about the intent of the edit,\nand what set of patches will achieve that intent.\nThen use the patch tool to make those edits. Combine all edits to any given file into a single patch tool call.\n\nComplete every task exhaustively - no matter how repetitive or tedious.\nPartial work, pattern demonstrations, or stubs with TODOs are not acceptable, unless explicitly permitted by the user.\n\nThe done tool provides a checklist of items you MUST verify and\nreview before declaring that you are done. Before executing\nthe done tool, run all the tools the done tool checklist asks\nfor, including creating a git commit. Do not forget to run tests.\n\u003c/workflow\u003e\n\n\u003csystem_info\u003e\n\u003cplatform\u003e\nlinux/amd64\n\u003c/platform\u003e\n\u003cpwd\u003e\n/\n\u003c/pwd\u003e\n\u003c/system_info\u003e\n\n\u003cgit_info\u003e\n\u003cgit_root\u003e\n\n\u003c/git_root\u003e\n\u003cHEAD\u003e\nHEAD\n\u003c/HEAD\u003e\n\u003c/git_info\u003e\n\n",
+   "text": "You are the expert software engineer and architect powering Sketch,\nan agentic coding environment that helps users accomplish coding tasks through autonomous analysis and implementation.\n\n\u003cworkflow\u003e\nStart by asking concise clarifying questions as needed.\nOnce the intent is clear, work autonomously.\nAim for a small diff size while thoroughly completing the requested task.\nPrioritize thoughtful analysis and critical engagement over agreeability.\n\nCall the title tool as soon as the topic of conversation is clear, often immediately.\n\nBreak down the overall goal into a series of smaller steps.\n(The first step is often: \"Make a plan.\")\nThen execute each step using tools.\nUpdate the plan if you have encountered problems or learned new information.\n\nWhen in doubt about a step, follow this broad workflow:\n\n- Think about how the current step fits into the overall plan.\n- Do research. Good tool choices: bash, think, keyword_search\n- Make edits.\n- Repeat.\n\nTo make edits reliably and efficiently, first think about the intent of the edit,\nand what set of patches will achieve that intent.\nThen use the patch tool to make those edits. Combine all edits to any given file into a single patch tool call.\n\nComplete every task exhaustively - no matter how repetitive or tedious.\nPartial work, pattern demonstrations, or stubs with TODOs are not acceptable, unless explicitly permitted by the user.\n\nThe done tool provides a checklist of items you MUST verify and\nreview before declaring that you are done. Before executing\nthe done tool, run all the tools the done tool checklist asks\nfor, including creating a git commit. Do not forget to run tests.\n\u003c/workflow\u003e\n\n\u003cstyle\u003e\nDefault coding guidelines:\n- Clear is better than clever.\n- Minimal inline comments: non-obvious logic and key decisions only.\n\u003c/style\u003e\n\n\u003csystem_info\u003e\n\u003cplatform\u003e\nlinux/amd64\n\u003c/platform\u003e\n\u003cpwd\u003e\n/\n\u003c/pwd\u003e\n\u003c/system_info\u003e\n\n\u003cgit_info\u003e\n\u003cgit_root\u003e\n\n\u003c/git_root\u003e\n\u003cHEAD\u003e\nHEAD\n\u003c/HEAD\u003e\n\u003c/git_info\u003e\n\n",
    "type": "text",
    "cache_control": {
     "type": "ephemeral"
@@ -554,24 +554,24 @@
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
 Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-21T17:48:02Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:19:39Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-21T17:48:07Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:19:45Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-21T17:48:00Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:19:37Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
 Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-21T17:48:02Z
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:19:39Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 9435e6f92a33eb30-SJC
+Cf-Ray: 944f254d6862171a-SJC
 Content-Type: application/json
-Date: Wed, 21 May 2025 17:48:07 GMT
-Request-Id: req_011CPM6VoDtiCGdVBSXHKwyJ
+Date: Sat, 24 May 2025 19:19:45 GMT
+Request-Id: req_011CPStukaCC4JCpQWvySWrY
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01SHazCNqLKJF4tFzepoU6h1","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Here are the tools available to me:\n\n- `bash`: Executes shell commands\n- `keyword_search`: Searches for files with specific terms\n- `think`: Records thoughts, notes, or plans without external effects\n- `title`: Sets the conversation title\n- `precommit`: Creates a git branch for tracking work\n- `done`: Marks completion of user's goal with checklist evaluation\n- `codereview`: Runs automated code review\n- `about_sketch`: Provides information about Sketch\n- `multiplechoice`: Presents quick answer options to questions\n- `browser_navigate`: Navigates to a URL\n- `browser_click`: Clicks elements matching CSS selectors\n- `browser_type`: Types text into input elements\n- `browser_wait_for`: Waits for DOM elements\n- `browser_get_text`: Gets text from elements\n- `browser_eval`: Evaluates JavaScript\n- `browser_scroll_into_view`: Scrolls elements into view\n- `browser_resize`: Resizes browser window\n- `browser_recent_console_logs`: Gets browser console logs\n- `browser_clear_console_logs`: Clears console logs\n- `browser_take_screenshot`: Takes screenshots\n- `browser_read_image`: Reads image files\n- `patch`: Makes precise text edits to files"}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":4125,"cache_read_input_tokens":0,"output_tokens":303}}
\ No newline at end of file
+{"id":"msg_01LmNpBXK7SGcuZNpqBXDbY8","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Here are the tools available to me:\n\n**File & Code Operations:**\n- `bash` - Execute shell commands\n- `patch` - Modify files with precise text edits\n- `keyword_search` - Search codebase for relevant files\n- `codereview` - Run automated code review\n\n**Git Operations:**\n- `precommit` - Create git branch and get commit guidance\n\n**Browser Automation:**\n- `browser_navigate` - Navigate to URLs\n- `browser_click` - Click elements\n- `browser_type` - Type into inputs\n- `browser_wait_for` - Wait for elements\n- `browser_get_text` - Read element text\n- `browser_eval` - Execute JavaScript\n- `browser_scroll_into_view` - Scroll to elements\n- `browser_resize` - Resize browser window\n- `browser_take_screenshot` - Capture screenshots\n- `browser_read_image` - Read image files\n- `browser_recent_console_logs` - Get console logs\n- `browser_clear_console_logs` - Clear console logs\n\n**Workflow & Communication:**\n- `think` - Internal reasoning and planning\n- `title` - Set conversation title\n- `multiplechoice` - Present multiple choice questions\n- `about_sketch` - Get help with Sketch functionality\n- `done` - Complete tasks with verification checklist"}],"stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":4163,"cache_read_input_tokens":0,"output_tokens":311,"service_tier":"standard"}}
\ No newline at end of file