Upgrade to latest codex

Author: dglsparsons

doc/neo_reviewer.txt

@@ -90,7 +90,7 @@ Call setup() with your options: >lua
         },
         ai = {
             enabled = false,                      -- Run AI analysis by default
-            model = "gpt-5.2-codex", -- Model for Codex CLI (default)
+            model = "gpt-5.3-codex", -- Model for Codex CLI (default)
             command = "codex",       -- Command to invoke
             reasoning_effort = "medium", -- Reasoning effort hint (Codex CLI)
             walkthrough_window = {
@@ -122,7 +122,7 @@ ai ~
     Configure AI-powered review analysis. Requires an AI CLI (Codex CLI by
     default) to be installed and configured.
     - `enabled`: Run AI analysis by default (default: false).
-    - `model`: Model to use for analysis (default: "gpt-5.2-codex").
+    - `model`: Model to use for analysis (default: "gpt-5.3-codex").
     - `command`: Command to invoke the AI CLI (default: "codex").
     - `reasoning_effort`: Reasoning effort hint for Codex CLI
       (default: "medium", ignored by other CLIs).

lua/neo_reviewer/config.lua

@@ -111,7 +111,7 @@ M.values = {
     },
     ai = {
         enabled = false,
-        model = "gpt-5.2-codex",
+        model = "gpt-5.3-codex",
         command = "codex",
         reasoning_effort = "medium",
         walkthrough_window = {

lua/tests/plenary/ai_spec.lua

@@ -273,7 +273,7 @@ describe("neo_reviewer.config AI defaults", function()
     end)
 
     it("has default model", function()
-        assert.are.equal("gpt-5.2-codex", config.values.ai.model)
+        assert.are.equal("gpt-5.3-codex", config.values.ai.model)
     end)
 
     it("has default command", function()
@@ -317,7 +317,7 @@ describe("neo_reviewer.config build_ai_command", function()
         assert.are.equal("codex", spec.command)
         assert.is_nil(spec.writer)
         assert.are.same(
-            { "exec", "--model", "gpt-5.2-codex", "--config", 'model_reasoning_effort="medium"', "Explain this" },
+            { "exec", "--model", "gpt-5.3-codex", "--config", 'model_reasoning_effort="medium"', "Explain this" },
             spec.args
         )
     end)