initial commit, moved libpanto over from the pantograph repo

1 files changed, 56 insertions, 0 deletions

diff --git a/libpanto-go/README.md b/libpanto-go/README.md
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+# libpanto-go
+
+Idiomatic Go bindings for `libpanto-c` via cgo.
+
+## Build
+
+Build the C ABI first:
+
+```sh
+cd ..
+zig build
+```
+
+Then use the Go package from this directory:
+
+```sh
+go test ./...
+```
+
+At runtime, make sure `../zig-out/lib` (or the installed equivalent) is on your platform's dynamic library path.
+
+## Example
+
+```go
+panto.Init()
+defer panto.Deinit()
+
+agent, err := panto.NewAgent(panto.Config{
+    Provider: panto.ProviderConfig{
+        OpenAIChat: &panto.OpenAIChatConfig{
+            APIKey: os.Getenv("OPENAI_API_KEY"),
+            BaseURL: "https://api.openai.com/v1",
+            Model: "gpt-4.1-mini",
+        },
+    },
+})
+if err != nil { /* handle */ }
+defer agent.Close()
+
+stream, err := agent.Run(panto.UserMessage(panto.TextBlock("hello")))
+if err != nil { /* handle */ }
+defer stream.Close()
+
+for ev := range stream.Iter() {
+    // ev is an Event interface; type-switch on the concrete event, or branch
+    // on ev.EventType(). Breaking out of the loop is safe: the session store
+    // is current at every step.
+    switch ev := ev.(type) {
+    case panto.ContentDeltaEvent:
+        fmt.Print(ev.Delta)
+    case panto.MessageCompleteEvent:
+        // full message at agent.Conversation().Message(ev.MessageIndex)
+    }
+}
+if err := stream.Err(); err != nil { /* handle */ }
+```