memory: record opencode cleanup and model preference

daily/2026-03-19.md

@@ -16,3 +16,8 @@
   - `mac-7` 生成 key `~/.ssh/work2ai_gitea_mac7_ed25519`，注册到 Gitea user key id `20`，title `work2ai-mac7-gitea`，fingerprint `SHA256:bzlSYi6JR+T5o+0ka/M4ihSPZj8pTw83Y1Z+6wYqous`
   - 两台机器都写入了 `~/.ssh/config` 的 `gitea-work2ai` host 别名（`HostName gitea.jmsu.top`, `Port 2222`, `User git`, `IdentitiesOnly yes`）
   - 两台机器都完成验证：`ssh -T gitea-work2ai` 认证成功、`git ls-remote gitea-work2ai:work2ai/agent.git` 成功、`tea login add` 成功、`tea api user` 返回 `work2ai`
+- 已按方案 B 清理三台机器的 Homebrew `opencode` formula，只保留 `opencode-desktop` cask：
+  - mac-5 / mac-6 / mac-7 均已执行 `brew uninstall opencode`
+  - 三台机器的 `opencode --version` 保持为 `1.2.27`
+  - `/opt/homebrew/bin/opencode` 继续指向 `../lib/node_modules/opencode-ai/bin/opencode`
+- hotwa 新偏好：后续调用 opencode / ACP 时，优先使用 opencode zen 提供的免费模型；当前 mac-6、mac-7 默认工作模型应使用 `MiMo V2 Pro Free`。

shared/long-term/decisions/opencode-runtime-preferences.md

@@ -0,0 +1,9 @@
+# Opencode runtime preferences
+
+## Packaging policy
+- On mac-5 / mac-6 / mac-7, keep `opencode-desktop` cask and remove the Homebrew `opencode` formula to avoid CLI path conflicts.
+- Verified stable CLI after cleanup: `opencode --version` = `1.2.27`.
+
+## Model preference
+- For later opencode / ACP usage, prefer free models exposed via opencode zen when suitable.
+- Current default execution preference for mac-6 and mac-7: `MiMo V2 Pro Free`.