feat(ai): add OpenCode CLI provider

src-tauri/src/commands/ai.rs

@@ -239,6 +239,7 @@ fn resolve_cli_provider_config(mut config: AiConfig) -> AiConfig {
         AiProvider::CodexCli => (&mut config.codex_cli_path, "codex"),
         AiProvider::ClaudeCodeCli => (&mut config.claude_code_cli_path, "claude"),
         AiProvider::PiAgentCli => (&mut config.pi_agent_cli_path, "pi"),
+        AiProvider::OpenCodeCli => (&mut config.opencode_cli_path, "opencode"),
         _ => return config,
     };
     let command = path_slot.as_deref().map(str::trim).filter(|path| !path.is_empty()).unwrap_or(default_command);
@@ -324,6 +325,8 @@ mod tests {
             claude_code_cli_env: Default::default(),
             pi_agent_cli_path: None,
             pi_agent_cli_env: Default::default(),
+            opencode_cli_path: None,
+            opencode_cli_env: Default::default(),
         }
     }