v1.2 真实模型接入 + Thinking 死循环修复

- 新增 OpenAIProvider / ClaudeProvider，接入 Deepseek 真实 API
- 修复 Deepseek thinking 模式 reasoning_content 回传问题
- 修复 Thinking 阶段过渡指令每轮重复插入导致的死循环
- 新增 maxTurns 保护、dumpMessages/dumpTools 调试输出

go.mod

@@ -1,2 +1,21 @@
 module go-tiny-claw
 
+go 1.23.0
+
+require (
+	github.com/anthropics/anthropic-sdk-go v1.43.0 // indirect
+	github.com/bahlo/generic-list-go v0.2.0 // indirect
+	github.com/buger/jsonparser v1.1.2 // indirect
+	github.com/invopop/jsonschema v0.13.0 // indirect
+	github.com/joho/godotenv v1.5.1 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/openai/openai-go/v3 v3.35.0 // indirect
+	github.com/standard-webhooks/standard-webhooks/libraries v0.0.1 // indirect
+	github.com/tidwall/gjson v1.18.0 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.1 // indirect
+	github.com/tidwall/sjson v1.2.5 // indirect
+	github.com/wk8/go-ordered-map/v2 v2.1.8 // indirect
+	golang.org/x/sync v0.16.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)