Preserve preview harness, editor, email and task improvements

Snapshot current maintainer-preview application changes and regression fixtures for integration into lab. Excludes local runtime data, evaluation outputs and source backups. Focused Python regression selection: 140 passed; full suite not certified.

src/agent_tools/__init__.py

@@ -20,6 +20,7 @@ logger = logging.getLogger(__name__)
 
 from .subprocess_tools import BashTool, HostShellTool, PythonTool
 from .web_tools import WebSearchTool, WebFetchTool, PdfExtractTool, PrivateBrowserTool, YouTubeTool
+from .weather_tools import WeatherTool
 from .media_tools import ExtractTextTool, InspectMediaTool, TranscribeMediaTool
 from .filesystem_tools import ReadFileTool, WriteFileTool, EditFileTool, ApplyPatchTool, LsTool, GlobTool, GrepTool, GetWorkspaceTool
 from .coding_tools import TodoWriteTool
@@ -39,6 +40,7 @@ TOOL_HANDLERS = {
     "host_shell": HostShellTool().execute,
     "python": PythonTool().execute,
     "web_search": WebSearchTool().execute,
+    "get_weather": WeatherTool().execute,
     "web_fetch": WebFetchTool().execute,
     "pdf_extract": PdfExtractTool().execute,
     "youtube_tool": YouTubeTool().execute,