feat: modified opencode subagent configurations to use opencode/minimax-m2.1-free

.config/opencode/agent/subagents/build.md

@@ -1,7 +1,7 @@
 ---
 description: "Build and validation agent"
 mode: subagent
-model: github-copilot/gpt-4.1
+model: opencode/minimax-m2.1-free
 temperature: 0.1
 tools:
   webfetch: false

.config/opencode/agent/subagents/coder.md

@@ -1,7 +1,7 @@
 ---
 description: "Executes coding subtasks in sequence, ensuring completion as specified"
 mode: subagent
-model: github-copilot/gpt-4.1
+model: opencode/minimax-m2.1-free
 temperature: 0.1
 tools:
   webfetch: false

.config/opencode/agent/subagents/context.md

@@ -1,7 +1,7 @@
 ---
 description: "Language-agnostic codebase pattern analyst agent"
 mode: subagent
-model: github-copilot/gpt-4.1
+model: opencode/minimax-m2.1-free
 temperature: 0.1
 tools:
   bash: false

.config/opencode/agent/subagents/documentation.md

@@ -1,7 +1,7 @@
 ---
 description: "Universal code documentation subagent: inserts/updates doc comments for functions, methods, and modules in any language."
 mode: subagent
-model: github-copilot/gpt-4.1
+model: opencode/minimax-m2.1-free
 temperature: 0.2
 tools:
   bash: false

.config/opencode/agent/subagents/research.md

@@ -1,7 +1,7 @@
 ---
 description: "Research subagent for information gathering and summarization"
 mode: subagent
-model: github-copilot/gpt-4.1
+model: opencode/minimax-m2.1-free
 temperature: 0.1
 tools:
   bash: false

.config/opencode/agent/subagents/reviewer.md

@@ -1,7 +1,7 @@
 ---
 description: "Comprehensive code review, security, and quality assurance subagent"
 mode: subagent
-model: github-copilot/gpt-4.1
+model: opencode/minimax-m2.1-free
 temperature: 0.1
 tools:
   bash: false

.config/opencode/agent/subagents/task-manager.md

@@ -1,7 +1,7 @@
 ---
 description: "Breaks down complex features into small, verifiable subtasks"
 mode: subagent
-model: github-copilot/gpt-4.1
+model: opencode/minimax-m2.1-free
 temperature: 0.1
 tools:
   bash: false

.config/opencode/agent/subagents/tester.md

@@ -1,7 +1,7 @@
 ---
 description: "Test authoring and TDD agent"
 mode: subagent
-model: github-copilot/gpt-4.1
+model: opencode/minimax-m2.1-free
 temperature: 0.1
 tools:
   patch: false