Add send_file tool to send workspace files to Telegram chat

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

app/ai/service.py

@@ -332,9 +332,33 @@ class AIService:
     def _get_allowed_roots(self) -> tuple[Path, ...]:
         return (self.config.workspace_dir, self.config.prompt.root)
 
+    async def _execute_send_file(
+        self,
+        arguments: dict,
+        ctx: "CommandContext",
+        allowed_roots: tuple[Path, ...],
+    ) -> str:
+        from app.ai.tools import _resolve_sandboxed_path
+        raw_path = str(arguments.get("path", "")).strip()
+        caption = arguments.get("caption") or None
+        if not raw_path:
+            raise ValueError("send_file: 'path' is required")
+        path = _resolve_sandboxed_path(raw_path, allowed_roots)
+        if not path.exists():
+            raise ValueError(f"send_file: file not found: {raw_path!r}")
+        if not path.is_file():
+            raise ValueError(f"send_file: not a file: {raw_path!r}")
+        await ctx.client.send_document(
+            ctx.message.chat.id,
+            document=str(path),
+            caption=caption,
+        )
+        return f"Sent {raw_path} to chat"
+
     async def _execute_tool_call(
         self,
         tool_call: Any,
+        ctx: "CommandContext",
         mcp_client: MinimaxImageUnderstandClient | None,
         mcp_names: set[str],
         allowed_roots: tuple[Path, ...],
@@ -349,7 +373,9 @@ class AIService:
             return f"Tool {name!r}: invalid JSON arguments: {exc}"
 
         try:
-            if name in FILE_TOOL_DISPATCH:
+            if name == "send_file":
+                result = await self._execute_send_file(arguments, ctx, allowed_roots)
+            elif name in FILE_TOOL_DISPATCH:
                 result = await FILE_TOOL_DISPATCH[name](arguments, allowed_roots)
             elif name in mcp_names and mcp_client is not None:
                 result = await mcp_client.call_tool(name, arguments)
@@ -463,7 +489,7 @@ class AIService:
                     tc_name = getattr(getattr(tc, "function", None), "name", "?")
                     await self._maybe_call_progress(progress, f"🛠 Calling tool: {tc_name}")
                     result_text = await self._execute_tool_call(
-                        tc, mcp_client, mcp_names, allowed_roots, progress
+                        tc, ctx, mcp_client, mcp_names, allowed_roots, progress
                     )
                     messages.append({
                         "role": "tool",

app/ai/tools.py

@@ -196,6 +196,24 @@ FILE_TOOL_DISPATCH: dict[str, ToolExecutor] = {
 }
 
 FILE_TOOL_SCHEMAS: list[dict[str, Any]] = [
+    {
+        "type": "function",
+        "function": {
+            "name": "send_file",
+            "description": (
+                "Send a file from workspace/ or prompts/ to the current Telegram chat as a document. "
+                "Use this when the user asks to receive, download, or share a file."
+            ),
+            "parameters": {
+                "type": "object",
+                "properties": {
+                    "path": {"type": "string", "description": "Relative file path"},
+                    "caption": {"type": "string", "description": "Optional caption for the file"},
+                },
+                "required": ["path"],
+            },
+        },
+    },
     {
         "type": "function",
         "function": {