deeleeramone · deeleeramone · May 17, 2026 · May 9, 2026 · May 9, 2026 · May 9, 2026
diff --git a/claude/.claude-plugin/marketplace.json b/claude/.claude-plugin/marketplace.json
@@ -9,7 +9,7 @@
       "name": "pywry",
       "source": "./plugins/pywry/",
       "description": "Native Claude Code integration for PyWry — MCP tools for generating and rendering HTML components, chat artifacts, and building native, web, or Jupyter applications with live preview. Built-in support for AgGrid, Plotly, TradingView, and more.",
-      "version": "0.1.0",
+      "version": "0.1.1",
       "author": {
         "name": "PyWry",
         "email": "pywry2@gmail.com",

diff --git a/claude/desktop-extension/manifest.json b/claude/desktop-extension/manifest.json
@@ -2,7 +2,7 @@
   "manifest_version": "0.4",
   "name": "pywry",
   "display_name": "PyWry",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Native Claude Desktop integration for PyWry — MCP tools for generating and rendering HTML components, chat artifacts, and building native, web, or Jupyter applications with live preview. Built-in support for AgGrid, Plotly, TradingView, and more.",
   "long_description": "PyWry is a cross-platform rendering engine and desktop UI toolkit for Python. This Desktop Extension bundles the PyWry MCP server (66+ tools) so Claude Desktop can scaffold widgets, render Plotly charts, drive AG Grid tables, build TradingView lightweight charts, and produce streaming chat artifacts — all delivered as embedded HTML resources viewable directly in the artifact pane. The `uv` runtime resolves `pywry[mcp]` from PyPI on first launch; no manual `pip install` is required.",
   "author": {

diff --git a/claude/plugins/pywry/.claude-plugin/marketplace.json b/claude/plugins/pywry/.claude-plugin/marketplace.json
@@ -9,7 +9,7 @@
       "name": "pywry",
       "source": "./",
       "description": "Native Claude Code integration for PyWry — MCP tools for generating and rendering HTML components, chat artifacts, and building native, web, or Jupyter applications with live preview. Built-in support for AgGrid, Plotly, TradingView, and more.",
-      "version": "0.1.0",
+      "version": "0.1.1",
       "author": {
         "name": "PyWry",
         "email": "pywry2@gmail.com",

diff --git a/claude/plugins/pywry/.claude-plugin/plugin.json b/claude/plugins/pywry/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "pywry",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Native Claude Code integration for PyWry — MCP tools for generating and rendering HTML components, chat artifacts, and building native, web, or Jupyter applications with live preview. Built-in support for AgGrid, Plotly, TradingView, and more.",
   "author": {
     "name": "PyWry",

diff --git a/claude/plugins/pywry/CHANGELOG.md b/claude/plugins/pywry/CHANGELOG.md
@@ -3,6 +3,25 @@
 Versioning follows [semver](https://semver.org/). Format is a feature
 list per release — not a delta.
 
+## 0.1.1 — chat-handler regression fix
+
+**Chat widget reliability.** Fixed a regression where the desktop chat
+panel rendered empty (no welcome message, dead buttons) after a
+`set_content` IPC swap. Root cause: `chat-handlers.js` contained a
+literal `'</head>'` string inside its iframe meta-tag injection
+helper. When inlined into the host document's `<head>`, the desktop
+subprocess's regex-based head-script extractor terminated early on
+the stray tag, dropping the chat-handlers `<script>` and leaving
+`window.initChatHandlers` undefined at re-init time. The literals are
+now split (`'<' + 'head>'` / `'</' + 'head>'`) so any naive HTML
+extractor sees a balanced document.
+
+**Demo refresh.** `pywry_demo_deepagent_nvidia.py` model catalog
+trimmed to a small curated set of currently-served NVIDIA NIM
+tool-capable models; stale ids that 404 at inference removed. The
+dropdown now only shows entries the live `ChatNVIDIA.
+get_available_models()` lookup confirms.
+
 ## 0.1.0 — first public release
 
 **MCP server.** `.mcp.json` launches `pywry mcp --transport stdio` and

diff --git a/pywry/docs/requirements.txt b/pywry/docs/requirements.txt
@@ -13,5 +13,5 @@ mkdocs-literate-nav>=0.6.3
 mkdocs-section-index>=0.3.12
 
 # Needed for building docs (dependencies of pywry)
-pydantic>=2.13.3
+pydantic>=2.13.4
 pydantic-settings>=2.14.0
diff --git a/pywry/examples/pywry_demo_deepagent_nvidia.py b/pywry/examples/pywry_demo_deepagent_nvidia.py
@@ -84,22 +84,19 @@ def new_event_loop(self) -> asyncio.AbstractEventLoop:
 from pywry.tvchart import build_tvchart_toolbars  # noqa: E402
 
 
-DEFAULT_MODEL = "qwen/qwen3-coder-480b-a35b-instruct"
-
-# Preferred tool-capable chat models exposed through NVIDIA NIM, in
-# priority order.  The first model that the live ``ChatNVIDIA.
-# get_available_models()`` lookup actually returns is picked as the
-# default.  Llama variants are intentionally excluded — they under-
-# perform on strict-format tool-calling compared to the models below.
+DEFAULT_MODEL = "deepseek-ai/deepseek-v4-pro"
+
+# Small curated set of currently-hosted tool-capable chat models on
+# NVIDIA NIM (May 2026).  Kept intentionally short — every entry must
+# (a) support tool/function calling, (b) be currently served (no 4xx
+# at inference), and (c) be strong enough for the chart-agent loop.
+# The first entry that ``ChatNVIDIA.get_available_models()`` confirms
+# is live becomes the default; the rest populate the model dropdown.
 PREFERRED_TOOL_MODELS = [
+    "deepseek-ai/deepseek-v4-pro",
+    "nvidia/nemotron-3-super-120b-a12b",
     "qwen/qwen3-coder-480b-a35b-instruct",
-    "deepseek-ai/deepseek-v3.1",
-    "deepseek-ai/deepseek-r1",
-    "moonshotai/kimi-k2-instruct-0905",
     "openai/gpt-oss-120b",
-    "qwen/qwen3-235b-a22b-instruct-2507",
-    "zai-org/glm-4.5-air",
-    "mistralai/mistral-nemotron",
 ]
 
 CHART_SYSTEM_PROMPT = """\
@@ -304,26 +301,28 @@ def stop() -> None:
 
 
 def _fetch_nvidia_models() -> list[str]:
-    """Fetch available tool-capable chat models from NVIDIA NIM."""
+    """Return the curated tool-capable models actually live on NIM.
+
+    Filters ``PREFERRED_TOOL_MODELS`` against the live
+    ``ChatNVIDIA.get_available_models()`` catalog so the dropdown only
+    ever shows models we've vetted AND that NVIDIA is currently serving.
+    Falls back to the full curated list on lookup failure so the UI is
+    never empty.
+    """
     try:
         from langchain_nvidia_ai_endpoints import ChatNVIDIA
 
-        available = ChatNVIDIA.get_available_models()
-        model_ids = sorted(
+        live_ids = {
             m.id
-            for m in available
+            for m in ChatNVIDIA.get_available_models()
             if getattr(m, "model_type", None) == "chat" and getattr(m, "supports_tools", False)
-        )
-        if not model_ids:
-            return [DEFAULT_MODEL]
-        for preferred in PREFERRED_TOOL_MODELS:
-            if preferred in model_ids:
-                model_ids = [preferred, *[m for m in model_ids if m != preferred]]
-                break
-        if model_ids:
-            return model_ids
-    except Exception:
-        return [DEFAULT_MODEL]
+        }
+    except Exception as exc:
+        print(f"[deepagent] NVIDIA model catalog lookup failed ({exc}); using curated list.")
+        return list(PREFERRED_TOOL_MODELS)
+
+    curated_live = [m for m in PREFERRED_TOOL_MODELS if m in live_ids]
+    return curated_live or list(PREFERRED_TOOL_MODELS)
 
 
 def main() -> None:

diff --git a/pywry/pyproject.toml b/pywry/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "pywry"
-version = "2.0.1"
+version = "2.0.2"
 description = "A lightweight and blazingly fast, cross-platform, WebView rendering engine and desktop UI toolkit for Python. Batteries included."
 authors = [{ name = "PyWry", email = "pywry2@gmail.com" }]
 license = { text = "Apache 2.0" }

diff --git a/pywry/pywry/frontend/src/chat-handlers.js b/pywry/pywry/frontend/src/chat-handlers.js
@@ -1878,12 +1878,18 @@ function initChatHandlers(container, pywry) {
     // they try to reconnect, which is the intended behaviour.
     var html = data.html || data.content || '';
     if (data.widgetId && data.revision) {
+      // NOTE: tag literals are split so this script can be safely inlined
+      // into a host document's <head> without a regex-based head/script
+      // extractor (see pywry/__main__.py) terminating early on a stray
+      // closing tag inside this string.
+      var headOpen = '<' + 'head>';
+      var headClose = '</' + 'head>';
       var meta = '<meta name="pywry-app-revision" content="' + data.revision + '">';
       // Insert meta tag into <head> if present, else as first element.
-      if (html.indexOf('<head>') !== -1) {
-        html = html.replace('<head>', '<head>' + meta);
+      if (html.indexOf(headOpen) !== -1) {
+        html = html.replace(headOpen, headOpen + meta);
       } else if (html.indexOf('<html>') !== -1) {
-        html = html.replace('<html>', '<html><head>' + meta + '</head>');
+        html = html.replace('<html>', '<html>' + headOpen + meta + headClose);
       } else {
         html = meta + html;
       }

diff --git a/pywry/pywry/frontend/src/main.js b/pywry/pywry/frontend/src/main.js
@@ -23,6 +23,12 @@ window.pywry = {
       htmlEl.classList.add('dark', 'pywry-theme-dark');
     }
     document.getElementById('app').innerHTML = html;
+    if (typeof initToolbarHandlers === 'function') {
+      initToolbarHandlers(document, window.pywry);
+    }
+    if (typeof initChatHandlers === 'function') {
+      initChatHandlers(document, window.pywry);
+    }
     window.pywry.sendEvent('content:ready', { timestamp: Date.now() });
   },
 
@@ -231,6 +237,12 @@ function registerBuiltinHandlers() {
       } else {
         document.body.innerHTML = data.html;
       }
+      if (typeof initToolbarHandlers === 'function') {
+        initToolbarHandlers(document, window.pywry);
+      }
+      if (typeof initChatHandlers === 'function') {
+        initChatHandlers(document, window.pywry);
+      }
     }
   });
 

diff --git a/pywry/pywry/frontend/src/system-events.js b/pywry/pywry/frontend/src/system-events.js
@@ -119,6 +119,9 @@
 
     window.pywry.on('pywry:set-content', function(data) {
         window.pywry.setContent(data);
+        if (typeof initChatHandlers === 'function') {
+            initChatHandlers(document, window.pywry);
+        }
     });
 
     window.pywry.on('pywry:refresh', function() {
@@ -224,6 +227,12 @@
             } else {
                 document.body.innerHTML = data.html;
             }
+            if (typeof initToolbarHandlers === 'function') {
+                initToolbarHandlers(document, window.pywry);
+            }
+            if (typeof initChatHandlers === 'function') {
+                initChatHandlers(document, window.pywry);
+            }
         }
     });
 

diff --git a/pywry/pywry/templates.py b/pywry/pywry/templates.py
@@ -834,5 +834,11 @@ def build_content_update_script(html_content: str) -> str:
         }} else {{
             document.body.innerHTML = '<div class="pywry-container">' + {escaped_html} + '</div>';
         }}
+        if (typeof initToolbarHandlers === 'function') {{
+            initToolbarHandlers(document, window.pywry);
+        }}
+        if (typeof initChatHandlers === 'function') {{
+            initChatHandlers(document, window.pywry);
+        }}
     }})();
     """
diff --git a/pywry/pywry/widget.py b/pywry/pywry/widget.py
@@ -658,6 +658,9 @@ def _get_aggrid_widget_esm() -> str:
                 if (event.type === 'pywry:update-html' && event.data && event.data.html) {
                     container.innerHTML = event.data.html;
                     initToolbarHandlers(container, pywry);
+                    if (typeof initChatHandlers === 'function') {
+                        initChatHandlers(container, pywry);
+                    }
                 }
 
                 const inlineHandledEvents = ['pywry:update-theme', 'pywry:inject-css', 'pywry:remove-css',
@@ -1256,6 +1259,9 @@ def _get_widget_esm() -> str:
                 if (event.type === 'pywry:update-html' && event.data && event.data.html) {
                     container.innerHTML = event.data.html;
                     initToolbarHandlers(container, pywry);
+                    if (typeof initChatHandlers === 'function') {
+                        initChatHandlers(container, pywry);
+                    }
                 }
 
                 const inlineHandledEvents = ['pywry:update-theme', 'pywry:inject-css', 'pywry:remove-css',