fuzzy selectors for models and reasoning levels

2 files changed, 11 insertions, 0 deletions

diff --git a/libpanto-c/include/panto.h b/libpanto-c/include/panto.h
index 94ddcb9..d0c272f 100644
--- a/libpanto-c/include/panto.h
+++ b/libpanto-c/include/panto.h
@@ -115,6 +115,12 @@ PANTO_EXPORT PantoStatus panto_agent_add_system_message(PantoAgent *agent, const
 PANTO_EXPORT PantoStatus panto_agent_set_system_prompt(PantoAgent *agent, const char *text);
 PANTO_EXPORT PantoStatus panto_agent_compact(PantoAgent *agent, const char *override_system_prompt, const char *extra_instructions, PantoCompactionResult *out);
 PANTO_EXPORT PantoStatus panto_agent_run(PantoAgent *agent, const char *user_text, PantoStream **out);
+/* Reset a failed stream back to its turn-open boundary so the caller can
+ * resume panto_stream_next() after changing the agent config (e.g. catch a
+ * terminal bad-request, swap the provider config, and retry the SAME turn
+ * without re-appending the user message). Errors if the stream has not
+ * failed. */
+PANTO_EXPORT PantoStatus panto_stream_reopen(PantoStream *stream);
 PANTO_EXPORT void panto_stream_destroy(PantoStream *stream);
 PANTO_EXPORT PantoNextStatus panto_stream_next(PantoStream *stream, PantoEvent *out);
 PANTO_EXPORT void panto_event_free(PantoEvent *event);
diff --git a/libpanto-c/src/lib.zig b/libpanto-c/src/lib.zig
index 9b55bee..78202fb 100644
--- a/libpanto-c/src/lib.zig
+++ b/libpanto-c/src/lib.zig
@@ -591,6 +591,11 @@ export fn panto_agent_run(a: *PantoAgent, text: ?[*:0]const u8, out: **PantoStre
     out.* = @ptrCast(st);
     return .ok;
 }
+export fn panto_stream_reopen(s: *PantoStream) PantoStatus {
+    const st: *panto.Stream = @ptrCast(@alignCast(s));
+    st.reopen() catch |e| return setErr("{t}", .{e});
+    return .ok;
+}
 export fn panto_stream_destroy(s: ?*PantoStream) void {
     if (s) |ptr| {
         const st: *panto.Stream = @ptrCast(@alignCast(ptr));