fix: tool call anchor & wire format, streaming chunk passthrough, WebUI narrow-screen, docs bilingual

internal/lua/adapters/anthropic.lua

@@ -103,12 +103,41 @@ function adapter.transform_stream_chunk(raw_chunk)
     if chunk.type == "message_delta" then
         return json.encode({ content = "", done = (chunk.delta and chunk.delta.stop_reason ~= nil) })
     end
+    if chunk.type == "content_block_start" and chunk.content_block
+        and chunk.content_block.type == "tool_use" then
+        -- first fragment of a tool call: emit index + id + name, empty args
+        return json.encode({
+            content = "", done = false,
+            tool_calls = { {
+                index = chunk.index or 0,
+                id = chunk.content_block.id or "",
+                type = "function",
+                ["function"] = { name = chunk.content_block.name or "", arguments = "" }
+            } }
+        })
+    end
     if chunk.type == "content_block_delta" and chunk.delta then
+        if chunk.delta.type == "input_json_delta" then
+            -- incremental JSON fragment; clients accumulate across chunks
+            local unified = { content = "", done = false, tool_calls = { {
+                index = chunk.index or 0,
+                id = "",
+                type = "function",
+                ["function"] = { name = "", arguments = chunk.delta.partial_json or "" }
+            } } }
+            return json.encode(unified)
+        end
+        if chunk.delta.type == "thinking_delta" and chunk.delta.thinking then
+            return json.encode({ content = "", done = false, reasoning_content = chunk.delta.thinking })
+        end
         return json.encode({ content = chunk.delta.text or "", done = false })
     end
     if chunk.type == "message_stop" then
         return json.encode({ content = "", done = true })
     end
+    if chunk.type == "content_block_stop" then
+        return json.encode({ content = "", done = false })
+    end
     return ""
 end
 

internal/lua/adapters/deepseek.lua

@@ -20,6 +20,18 @@ function adapter.transform_request(raw_body)
         req.extra_body.thinking = { type = "disabled" }
     end
     req.disable_thinking = nil
+
+    -- V4 thinking 模式要求：带 tool_calls 的 assistant 消息必须回传 reasoning_content。
+    -- OpenAI 兼容客户端不会发该字段，补空串即可通过校验。
+    if req.messages then
+        for _, msg in ipairs(req.messages) do
+            if msg.role == "assistant" and msg.tool_calls and msg.tool_calls[1] then
+                if msg.reasoning_content == nil then
+                    msg.reasoning_content = ""
+                end
+            end
+        end
+    end
     return json.encode(req)
 end
 
@@ -73,10 +85,18 @@ function adapter.transform_stream_chunk(raw_chunk)
     if not chunk.choices or #chunk.choices == 0 then return "" end
     local delta = chunk.choices[1].delta or {}
     local fr = chunk.choices[1].finish_reason
-    return json.encode({
+
+    local unified = {
         content = delta.content or "",
         done = (fr ~= nil)
-    })
+    }
+    if delta.reasoning_content then
+        unified.reasoning_content = delta.reasoning_content
+    end
+    if delta.tool_calls then
+        unified.tool_calls = delta.tool_calls
+    end
+    return json.encode(unified)
 end
 
 return adapter

internal/lua/adapters/gemini.lua

@@ -93,16 +93,31 @@ function adapter.transform_stream_chunk(raw_chunk)
 
     if not chunk.candidates or #chunk.candidates == 0 then return "" end
     local cand = chunk.candidates[1]
-    local content = ""
+    local unified = { content = "", done = (cand.finishReason ~= nil) }
+    local reasoning = ""
+    local tools = {}
     if cand.content and cand.content.parts then
         for _, part in ipairs(cand.content.parts) do
-            content = content .. (part.text or "")
+            if part.text then
+                unified.content = (unified.content or "") .. part.text
+            elseif part.reasoning_content then
+                reasoning = reasoning .. part.reasoning_content
+            elseif part.functionCall then
+                table.insert(tools, {
+                    index = #tools,
+                    id = part.functionCall.id or ("call_" .. #tools),
+                    type = "function",
+                    ["function"] = {
+                        name = part.functionCall.name or "",
+                        arguments = part.functionCall.args or "{}"
+                    }
+                })
+            end
         end
     end
-    return json.encode({
-        content = content,
-        done = (cand.finishReason ~= nil)
-    })
+    if reasoning ~= "" then unified.reasoning_content = reasoning end
+    if #tools > 0 then unified.tool_calls = tools end
+    return json.encode(unified)
 end
 
 return adapter

internal/lua/adapters/github.lua

@@ -66,10 +66,18 @@ function adapter.transform_stream_chunk(raw_chunk)
     if not chunk.choices or #chunk.choices == 0 then return "" end
     local delta = chunk.choices[1].delta or {}
     local fr = chunk.choices[1].finish_reason
-    return json.encode({
+
+    local unified = {
         content = delta.content or "",
         done = (fr ~= nil)
-    })
+    }
+    if delta.reasoning_content then
+        unified.reasoning_content = delta.reasoning_content
+    end
+    if delta.tool_calls then
+        unified.tool_calls = delta.tool_calls
+    end
+    return json.encode(unified)
 end
 
 return adapter

internal/lua/adapters/groq.lua

@@ -65,10 +65,18 @@ function adapter.transform_stream_chunk(raw_chunk)
     if not chunk.choices or #chunk.choices == 0 then return "" end
     local delta = chunk.choices[1].delta or {}
     local fr = chunk.choices[1].finish_reason
-    return json.encode({
+
+    local unified = {
         content = delta.content or "",
         done = (fr ~= nil)
-    })
+    }
+    if delta.reasoning_content then
+        unified.reasoning_content = delta.reasoning_content
+    end
+    if delta.tool_calls then
+        unified.tool_calls = delta.tool_calls
+    end
+    return json.encode(unified)
 end
 
 return adapter

internal/lua/adapters/kimicode.lua

@@ -98,10 +98,18 @@ function adapter.transform_stream_chunk(raw_chunk)
     if not chunk.choices or #chunk.choices == 0 then return "" end
     local delta = chunk.choices[1].delta or {}
     local fr = chunk.choices[1].finish_reason
-    return json.encode({
+
+    local unified = {
         content = delta.content or "",
         done = (fr ~= nil)
-    })
+    }
+    if delta.reasoning_content then
+        unified.reasoning_content = delta.reasoning_content
+    end
+    if delta.tool_calls then
+        unified.tool_calls = delta.tool_calls
+    end
+    return json.encode(unified)
 end
 
 return adapter

internal/lua/adapters/mistral.lua

@@ -65,10 +65,18 @@ function adapter.transform_stream_chunk(raw_chunk)
     if not chunk.choices or #chunk.choices == 0 then return "" end
     local delta = chunk.choices[1].delta or {}
     local fr = chunk.choices[1].finish_reason
-    return json.encode({
+
+    local unified = {
         content = delta.content or "",
         done = (fr ~= nil)
-    })
+    }
+    if delta.reasoning_content then
+        unified.reasoning_content = delta.reasoning_content
+    end
+    if delta.tool_calls then
+        unified.tool_calls = delta.tool_calls
+    end
+    return json.encode(unified)
 end
 
 return adapter

internal/lua/adapters/ollama.lua

@@ -72,10 +72,29 @@ function adapter.transform_stream_chunk(raw_chunk)
     if not ok then return "" end
     if not chunk.message then return "" end
 
-    return json.encode({
+    local unified = {
         content = chunk.message.content or "",
         done = chunk.done or false
-    })
+    }
+    if chunk.message.reasoning_content then
+        unified.reasoning_content = chunk.message.reasoning_content
+    end
+    if chunk.message.tool_calls then
+        local tools = {}
+        for _, tc in ipairs(chunk.message.tool_calls) do
+            table.insert(tools, {
+                index = #tools,
+                id = tc.id or ("call_" .. #tools),
+                type = "function",
+                ["function"] = {
+                    name = tc["function"] and tc["function"].name or "",
+                    arguments = tc["function"] and (tc["function"].arguments or "{}") or "{}"
+                }
+            })
+        end
+        unified.tool_calls = tools
+    end
+    return json.encode(unified)
 end
 
 return adapter

internal/lua/adapters/openai.lua

@@ -71,10 +71,18 @@ function adapter.transform_stream_chunk(raw_chunk)
     local delta = chunk.choices[1].delta or {}
     local fr = chunk.choices[1].finish_reason
 
-    return json.encode({
+    local unified = {
         content = delta.content or "",
         done = (fr ~= nil)
-    })
+    }
+    if delta.reasoning_content then
+        unified.reasoning_content = delta.reasoning_content
+    end
+    if delta.tool_calls then
+        -- pass raw streaming fragments through; OpenAI clients accumulate index+id+name+arguments
+        unified.tool_calls = delta.tool_calls
+    end
+    return json.encode(unified)
 end
 
 return adapter