feat: LuaJIT worker-pool VM, multimodal/disable-thinking passthrough, WebUI redesign, DeepSeek V4

internal/lua/adapters/anthropic.lua

@@ -11,13 +11,42 @@ function adapter.transform_request(raw_body)
     local ok, req = pcall(json.decode, raw_body)
     if not ok then return raw_body end
 
+    -- 将 OpenAI 风格 content（字符串或 [{type:*}] 数组）拆成文本/图片块
+    local function collect_blocks(content)
+        if type(content) == "string" then
+            return { { type = "text", text = content } }
+        end
+        local blocks = {}
+        for _, p in ipairs(content or {}) do
+            if p.type == "text" then
+                table.insert(blocks, { type = "text", text = p.text })
+            elseif p.type == "image_url" and type(p.image_url) == "table" and p.image_url.url then
+                local mt, b64 = string.match(p.image_url.url, "^data:([^,]+);base64,(.+)$")
+                if b64 then
+                    table.insert(blocks, { type = "image", source = { type = "base64", media_type = mt or "image/png", data = b64 } })
+                else
+                    table.insert(blocks, { type = "image", source = { type = "url", url = p.image_url.url } })
+                end
+            end
+        end
+        return blocks
+    end
+    local function text_of(content)
+        if type(content) == "string" then return content end
+        local t = ""
+        for _, p in ipairs(content or {}) do
+            if p.type == "text" and p.text then t = t .. p.text end
+        end
+        return t
+    end
+
     local msgs = {}
     local system = ""
     for _, m in ipairs(req.messages or {}) do
         if m.role == "system" then
-            system = system .. m.content .. "\n"
+            system = system .. text_of(m.content) .. "\n"
         else
-            table.insert(msgs, { role = m.role, content = m.content })
+            table.insert(msgs, { role = m.role, content = collect_blocks(m.content) })
         end
     end
 

internal/lua/adapters/deepseek.lua

@@ -9,7 +9,11 @@ function adapter.transform_request(raw_body)
     local ok, req = pcall(json.decode, raw_body)
     if not ok then return raw_body end
 
-    req.model = req.model or "deepseek-chat"
+    -- V4 已替换 legacy 模型名（deepseek-chat/reasoner 2026-07-24 停用）
+    req.model = req.model or "deepseek-v4-flash"
+    if req.model == "deepseek-chat" or req.model == "deepseek-reasoner" then
+        req.model = "deepseek-v4-flash"
+    end
     req.stream = req.stream or false
     if req.disable_thinking then
         req.extra_body = req.extra_body or {}

internal/lua/adapters/gemini.lua

@@ -11,11 +11,30 @@ function adapter.transform_request(raw_body)
     local ok, req = pcall(json.decode, raw_body)
     if not ok then return raw_body end
 
+    -- 将 OpenAI 风格 content（字符串或 [{type:*}] 数组）拆成 Gemini parts
+    local function to_parts(content)
+        if type(content) == "string" then
+            return { { text = content } }
+        end
+        local parts = {}
+        for _, p in ipairs(content or {}) do
+            if p.type == "text" then
+                table.insert(parts, { text = p.text })
+            elseif p.type == "image_url" and type(p.image_url) == "table" and p.image_url.url then
+                local mt, b64 = string.match(p.image_url.url, "^data:([^,]+);base64,(.+)$")
+                if b64 then
+                    table.insert(parts, { inline_data = { mime_type = mt or "image/png", data = b64 } })
+                end
+            end
+        end
+        return parts
+    end
+
     local contents = {}
     for _, m in ipairs(req.messages or {}) do
         table.insert(contents, {
             role = (m.role == "assistant") and "model" or m.role,
-            parts = { { text = m.content } }
+            parts = to_parts(m.content)
         })
     end
 

internal/lua/adapters/ollama.lua

@@ -19,11 +19,29 @@ function adapter.transform_request(raw_body)
         }
     }
 
-    -- 转换 messages 格式（Ollama 兼容 OpenAI 的 messages 格式）
+    -- 转换 messages 格式（Ollama messages 支持 images base64 数组）
     if req.messages then
         local msgs = {}
         for _, m in ipairs(req.messages) do
-            table.insert(msgs, { role = m.role, content = m.content })
+            local text, images
+            if type(m.content) == "string" then
+                text, images = m.content, nil
+            else
+                text = ""
+                images = {}
+                for _, p in ipairs(m.content or {}) do
+                    if p.type == "text" then
+                        text = text .. (p.text or "")
+                    elseif p.type == "image_url" and type(p.image_url) == "table" and p.image_url.url then
+                        local b64 = string.match(p.image_url.url, "^data:[^,]+;base64,(.+)$")
+                        if b64 then table.insert(images, b64) end
+                    end
+                end
+                if #images == 0 then images = nil end
+            end
+            local msg = { role = m.role, content = text }
+            if images then msg.images = images end
+            table.insert(msgs, msg)
         end
         ollama_req.messages = msgs
     end