chore: configure nemotron nano parsers (#5396)

Signed-off-by: ayushag <ayushag@nvidia.com>

lib/parsers/src/reasoning/mod.rs

@@ -27,6 +27,7 @@ fn get_reasoning_parser_map() -> &'static HashMap<&'static str, ReasoningParserT
         map.insert("step3", ReasoningParserType::Step3);
         map.insert("mistral", ReasoningParserType::Mistral);
         map.insert("granite", ReasoningParserType::Granite);
+        map.insert("nemotron_nano", ReasoningParserType::NemotronDeci); // nemotron nano is <think>...</think>
         map
     })
 }
@@ -213,6 +214,7 @@ mod tests {
             "step3",
             "mistral",
             "granite",
+            "nemotron_nano",
         ];
         for parser in available_parsers {
             assert!(parsers.contains(&parser));

lib/parsers/src/tool_calling/parsers.rs

@@ -43,6 +43,7 @@ pub fn get_tool_parser_map() -> &'static HashMap<&'static str, ToolCallConfig> {
         map.insert("qwen3_coder", ToolCallConfig::qwen3_coder());
         map.insert("jamba", ToolCallConfig::jamba());
         map.insert("default", ToolCallConfig::default());
+        map.insert("nemotron_nano", ToolCallConfig::qwen3_coder()); // nemotron nano follows qwen3_coder format
         map
     })
 }
@@ -207,6 +208,7 @@ mod tests {
             "deepseek_v3_2",
             "qwen3_coder",
             "jamba",
+            "nemotron_nano",
         ];
         for parser in available_parsers {
             assert!(parsers.contains(&parser));