big cli/tui gaps project

1 files changed, 7 insertions, 0 deletions

diff --git a/src/models_toml.zig b/src/models_toml.zig
index 9b1b4f0..cd2de1a 100644
--- a/src/models_toml.zig
+++ b/src/models_toml.zig
@@ -99,6 +99,10 @@ pub const ModelDef = struct {
     /// TOML omitted `model`.
     model: []const u8,
     reasoning: ReasoningEffort,
+    /// True when the TOML explicitly set a reasoning knob (`reasoning`,
+    /// `thinking`, or `effort`) for this alias. An explicit per-alias knob
+    /// wins over the config.toml `[defaults] reasoning` session default.
+    reasoning_explicit: bool = false,
     /// Approximate total input context window, for picker/UI metadata.
     context_window: ?u32 = null,
     /// Per-request output token cap; null = use the provider/library default.
@@ -410,6 +414,7 @@ fn ingestModel(
         .alias = alias_copy,
         .model = model_copy,
         .reasoning = reasoning,
+        .reasoning_explicit = v.get("reasoning") != null or v.get("thinking") != null or has_effort,
         .context_window = context_window,
         .max_tokens = max_tokens,
         .api_version = api_version_copy,
@@ -476,12 +481,14 @@ test "parseInto: model defs carry wire name and knobs, keyed by provider.alias"
     const sonnet = models.defs.get("anthropic", "sonnet").?;
     try testing.expectEqualStrings("claude-sonnet-4-20250514", sonnet.model);
     try testing.expectEqual(ReasoningEffort.high, sonnet.reasoning);
+    try testing.expect(sonnet.reasoning_explicit);
     try testing.expectEqual(@as(?u32, 200000), sonnet.context_window);
     try testing.expectEqual(@as(?u32, 8192), sonnet.max_tokens);
 
     const gpt = models.defs.get("openai", "gpt").?;
     try testing.expectEqualStrings("gpt-4o", gpt.model);
     try testing.expectEqual(ReasoningEffort.default, gpt.reasoning);
+    try testing.expect(!gpt.reasoning_explicit);
     try testing.expectEqual(@as(?u32, null), gpt.max_tokens);
 
     // Pricing keyed on the wire model id.