Add the write-up link and a banner to the card

.gitattributes

@@ -34,3 +34,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
 tokenizer.json filter=lfs diff=lfs merge=lfs -text
+assets/banner.jpg filter=lfs diff=lfs merge=lfs -text

MODEL_MANIFEST.json

@@ -40,16 +40,17 @@
     "LICENSE": "c71d239df91726fc519c6eb72d318ec65820627232b2f796219e87dcf35d0ab4",
     "MERGE-REPORT.json": "a42ca8b488e0b98b1a690937784e8da0fe417fd2218e7595129927221f4d9244",
     "NOTICE": "e74014fab972cffe76391a608e8a5cf54baeaf7d16cd8a77545edc67ffd25225",
-    "README.md": "dff64bd8154ec8c16e0df979a94c4c2c13f192744f02e579c7aceee7547ab64f",
+    "README.md": "e991987170a18dda2a68fe6a25793d3d18250eb47e0315c32699dd2ca7bb7c69",
     "REBUILD.md": "3b1fd15114b4cad8eb45cee219e2a248a11d3cfb359181346d14eab9c98df7a9",
     "RESULTS.md": "096b58ff385f3f149780de90e14516f5e9fdef97acb316dffc4a7b06314231b3",
-    "SHA256SUMS": "ae5919198a118db75302a55d803d20a6b88cfc05877bf56cb42e499c8bd0f296",
+    "SHA256SUMS": "f791bda2f116f379302351fd46d29d5938aedf0cac63db8239341c6daf4b8926",
     "SOURCES.md": "3bd6eb1b1d0c5b0b18ff8ee8f2076512f514c3367e943610515b82e43e852144",
     "adapter/adapter_config.json": "ff2a5427cbcf0e7a0a61940920d06f0e1fc116565258c3eca2501b0d10933250",
     "adapter/adapter_model.safetensors": "3bd401009801b39f29148427e884a8230a85ddb3c20a54ea834372889998c895",
     "adapter/merge.py": "bf0999886d5b6ac6764c7a9d688c890579062a04254e0054bb230681fb464a7e",
     "adapter/readout.safetensors": "bce897f1b66c449f82fba72ab1a5d8f42860886b3470d40cbfcd0a2618cd3db4",
     "adapter/training_args.json": "a21335b47e3de1299bb36bd7c6abf11aa11423a20aa5fcbc369057108b10b144",
+    "assets/banner.jpg": "397a3e6c75acb76b71dcfa86dcea2ac0661f73fec799189df55e4de112534049",
     "chat_template.jinja": "a4aee8afcf2e0711942cf848899be66016f8d14a889ff9ede07bca099c28f715",
     "config.json": "8f5f404a71ecc53c4ff26fc42cb4c778ffacfb4c9623f5e2d51245166d6b5057",
     "d3_engine.py": "086238942762df45047a32cd9a8e2bedd9b63167eb40be260c776de567979f53",
@@ -130,16 +131,17 @@
     "LICENSE": 11357,
     "MERGE-REPORT.json": 86,
     "NOTICE": 279,
-    "README.md": 10952,
+    "README.md": 11437,
     "REBUILD.md": 1924,
     "RESULTS.md": 4669,
-    "SHA256SUMS": 8836,
+    "SHA256SUMS": 8922,
     "SOURCES.md": 3136,
     "adapter/adapter_config.json": 1329,
     "adapter/adapter_model.safetensors": 121954608,
     "adapter/merge.py": 10334,
     "adapter/readout.safetensors": 2611280,
     "adapter/training_args.json": 985,
+    "assets/banner.jpg": 226293,
     "chat_template.jinja": 7756,
     "config.json": 3090,
     "d3_engine.py": 4413,

README.md

@@ -16,6 +16,8 @@ tags:
 
 # d3-mini-agentcode (pre-release)
 
+![Ink-and-watercolor drawing: a small round robot sits on top of a huge haystack of code pages, holding up a glowing red needle it just found and inspecting it with a loupe.](https://huggingface.co/stonefish-labs/d3-mini-agentcode/resolve/main/assets/banner.jpg)
+
 **Pre-release.** A revised version is planned. It would be trained on positives from several writers, realistic task
 wording and more languages; see "Limitations" for what it targets.
 
@@ -24,6 +26,9 @@ written or run by AI coding agents**. It reads the agent's task and the change (
 answers whether the change does something security-relevant the task didn't call for, or something deliberately
 harmful. It's a cheap first-line filter that ranks changes for review.
 
+**Write-up:** [Small Models, Big Haystack](https://batteryshark.github.io/2026/11/05/small-models-big-haystack.html)
+covers how this model was built and tested, and how it compares with off-the-shelf d3 models and LLMs.
+
 ## Intended use
 - **An agent-code and code-mode gate:** score every agent diff or executed snippet; send flagged items to a human or a
   stronger model.

SHA256SUMS

@@ -1,7 +1,7 @@
 c71d239df91726fc519c6eb72d318ec65820627232b2f796219e87dcf35d0ab4  ./LICENSE
 a42ca8b488e0b98b1a690937784e8da0fe417fd2218e7595129927221f4d9244  ./MERGE-REPORT.json
 e74014fab972cffe76391a608e8a5cf54baeaf7d16cd8a77545edc67ffd25225  ./NOTICE
-dff64bd8154ec8c16e0df979a94c4c2c13f192744f02e579c7aceee7547ab64f  ./README.md
+e991987170a18dda2a68fe6a25793d3d18250eb47e0315c32699dd2ca7bb7c69  ./README.md
 3b1fd15114b4cad8eb45cee219e2a248a11d3cfb359181346d14eab9c98df7a9  ./REBUILD.md
 096b58ff385f3f149780de90e14516f5e9fdef97acb316dffc4a7b06314231b3  ./RESULTS.md
 3bd6eb1b1d0c5b0b18ff8ee8f2076512f514c3367e943610515b82e43e852144  ./SOURCES.md
@@ -10,6 +10,7 @@ ff2a5427cbcf0e7a0a61940920d06f0e1fc116565258c3eca2501b0d10933250  ./adapter/adap
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 a21335b47e3de1299bb36bd7c6abf11aa11423a20aa5fcbc369057108b10b144  ./adapter/training_args.json
+397a3e6c75acb76b71dcfa86dcea2ac0661f73fec799189df55e4de112534049  ./assets/banner.jpg
 a4aee8afcf2e0711942cf848899be66016f8d14a889ff9ede07bca099c28f715  ./chat_template.jinja
 8f5f404a71ecc53c4ff26fc42cb4c778ffacfb4c9623f5e2d51245166d6b5057  ./config.json
 086238942762df45047a32cd9a8e2bedd9b63167eb40be260c776de567979f53  ./d3_engine.py