Add Gemini 3 and 3.1 model configurations and aliases

- Add gemini-3-flash, gemini-3-pro, gemini-3.1-flash-lite, gemini-3.1-pro
- Update flash/gemini-pro aliases to point to latest 3.1 models
- 48 total built-in models

Author: Bruce Hauman

doc/model-configuration.md

@@ -230,7 +230,7 @@ If a model key is not found in your custom configuration, the system automatical
 
 ## Built-in Models
 
-The system includes 44 pre-configured models that can be used without configuration:
+The system includes 48 pre-configured models that can be used without configuration:
 
 ### OpenAI
 - `:openai/gpt-4o`
@@ -249,6 +249,8 @@ The system includes 44 pre-configured models that can be used without configurat
 - `:google/gemini-2-5-flash`
 - `:google/gemini-2-5-flash-reasoning`
 - `:google/gemini-2-5-pro-reasoning`
+- `:google/gemini-3-flash`, `:google/gemini-3-pro`
+- `:google/gemini-3-1-flash-lite`, `:google/gemini-3-1-pro`
 
 ### Anthropic
 - `:anthropic/claude-opus-4-6`, `:anthropic/claude-opus-4-6-reasoning`

src/clojure_mcp/agent/langchain/model.clj

@@ -185,6 +185,22 @@
           {:model-name "gemini-2.5-pro"
            :thinking thinking-base})
 
+   :google/gemini-3-flash
+   (merge model-base
+          {:model-name "gemini-3-flash-preview"})
+
+   :google/gemini-3-pro
+   (merge model-base
+          {:model-name "gemini-3-pro-preview"})
+
+   :google/gemini-3-1-flash-lite
+   (merge model-base
+          {:model-name "gemini-3.1-flash-lite-preview"})
+
+   :google/gemini-3-1-pro
+   (merge model-base
+          {:model-name "gemini-3.1-pro-preview"})
+
    ;; Anthropic Models
    :anthropic/claude-opus-4-1
    (merge model-base
@@ -267,10 +283,14 @@
    ;; Anthropic reasoning aliases
    :sonnet-reasoning  :anthropic/claude-sonnet-4-6-reasoning
    :opus-reasoning    :anthropic/claude-opus-4-6-reasoning
-   ;; Google aliases
-   :flash     :google/gemini-2-5-flash
-   :flash-lite :google/gemini-2-5-flash-lite
-   :gemini-pro :google/gemini-2-5-pro
+   ;; Google aliases - latest points to 3.1
+   :flash     :google/gemini-3-1-flash-lite
+   :flash-lite :google/gemini-3-1-flash-lite
+   :gemini-pro :google/gemini-3-1-pro
+   :gemini-3-1-pro :google/gemini-3-1-pro
+   :gemini-3-1-flash-lite :google/gemini-3-1-flash-lite
+   :gemini-3-flash :google/gemini-3-flash
+   :gemini-3-pro :google/gemini-3-pro
    :flash-reasoning  :google/gemini-2-5-flash-reasoning
    :gemini-pro-reasoning :google/gemini-2-5-pro-reasoning
    ;; OpenAI aliases

test/clojure_mcp/agent/langchain/model_test.clj

@@ -48,6 +48,10 @@
       (is (contains? (set models) :google/gemini-2-5-flash))
       (is (contains? (set models) :google/gemini-2-5-flash-reasoning))
       (is (contains? (set models) :google/gemini-2-5-pro-reasoning))
+      (is (contains? (set models) :google/gemini-3-flash))
+      (is (contains? (set models) :google/gemini-3-pro))
+      (is (contains? (set models) :google/gemini-3-1-flash-lite))
+      (is (contains? (set models) :google/gemini-3-1-pro))
       ;; Anthropic models
       (is (contains? (set models) :anthropic/claude-opus-4))
       (is (contains? (set models) :anthropic/claude-opus-4-reasoning))
@@ -62,7 +66,7 @@
       (is (contains? (set models) :anthropic/claude-sonnet-4-6))
       (is (contains? (set models) :anthropic/claude-sonnet-4-6-reasoning))
       (is (contains? (set models) :anthropic/claude-haiku-4-5))
-      (is (= 44 (count models))))))
+      (is (= 48 (count models))))))
 
 (deftest test-get-provider
   (testing "Provider extraction from model keys"