docs: make English the default docs language and fix link paths

docs/memory/deep-dream.mdx

@@ -1,94 +1,90 @@
 ---
-title: 梦境蒸馏
-description: Deep Dream — 从对话到永久记忆的自动蒸馏机制
+title: Deep Dream
+description: Deep Dream — automatic distillation from conversations to permanent memory
 ---
 
-梦境蒸馏（Deep Dream）是 CowAgent 记忆系统的核心整理机制，负责将分散的天级记忆蒸馏为精炼的长期记忆，并生成梦境日记。
+Deep Dream is the core consolidation mechanism of CowAgent's memory system, responsible for distilling scattered daily memories into refined long-term memory and generating dream diaries.
 
-## 记忆流转
+## Memory Flow
 
-CowAgent 的记忆从短期到长期经历三个阶段：
+CowAgent's memory progresses through three stages from short-term to long-term:
 
 ```
-对话上下文（短期）→ 天级记忆（中期）→ MEMORY.md（长期）
+Conversation context (short-term) → Daily memory (mid-term) → MEMORY.md (long-term)
 ```
 
-### 1. 对话 → 天级记忆
+### 1. Conversation → Daily Memory
 
-当对话上下文被裁剪或每日定时总结时，系统使用 LLM 将对话内容摘要为关键事件，写入当天的天级记忆文件 `memory/YYYY-MM-DD.md`。
+When conversation context is trimmed or during the daily scheduled summary, the system uses LLM to summarize conversation content into key events, writing them to the daily memory file `memory/YYYY-MM-DD.md`.
 
-触发时机：
-- **上下文裁剪** — 轮次或 token 超限时，裁剪的内容被总结写入
-- **每日定时** — 23:55 自动触发全量总结
-- **API 溢出** — 紧急保存当前对话摘要
+Triggers:
+- **Context trimming** — Trimmed content is summarized when turn or token limits are exceeded
+- **Daily schedule** — Automatically triggered at 23:55
+- **API overflow** — Emergency save of current conversation summary
 
-### 2. 天级记忆 → MEMORY.md（蒸馏）
+### 2. Daily Memory → MEMORY.md (Distillation)
 
-每日总结完成后，Deep Dream 自动执行蒸馏：
+After the daily summary completes, Deep Dream automatically runs distillation:
 
-1. **读取材料** — 当前 `MEMORY.md` + 当天的天级记忆
-2. **LLM 蒸馏** — 去重、合并、修剪、提取新信息
-3. **覆写 MEMORY.md** — 输出精炼后的长期记忆
-4. **生成梦境日记** — 记录整理过程的发现和洞察
+1. **Read materials** — Current `MEMORY.md` + today's daily memory
+2. **LLM distillation** — Deduplicate, merge, prune, extract new information
+3. **Overwrite MEMORY.md** — Output the refined long-term memory
+4. **Generate dream diary** — Record discoveries and insights from the consolidation
 
-### 3. MEMORY.md 的作用
+### 3. Role of MEMORY.md
 
-`MEMORY.md` 会被注入到每次对话的系统提示词中，让 Agent 始终了解用户的偏好、决策和关键事实。因此它必须保持精炼——Deep Dream 会控制在约 30 条以内。
+`MEMORY.md` is injected into the system prompt for every conversation, keeping the Agent aware of user preferences, decisions, and key facts. Therefore it must stay concise — Deep Dream targets approximately 30 entries or fewer.
 
-## 蒸馏规则
+## Distillation Rules
 
-Deep Dream 遵循以下整理规则：
+Deep Dream follows these consolidation rules:
 
-| 操作 | 说明 |
+| Operation | Description |
 | --- | --- |
-| **合并提炼** | 含义相近的多条合并为一条高密度表述 |
-| **新增萃取** | 从天级记忆中提取偏好、决策、人物、经验等 |
-| **冲突更新** | 新信息与旧条目矛盾时，以新信息为准 |
-| **清理无效** | 删除临时性记录、空白条目、格式残留 |
-| **删除冗余** | 已被更精炼表述涵盖的旧条目删除 |
+| **Merge & refine** | Combine similar entries into single high-density statements |
+| **Extract new** | Pull preferences, decisions, people, experiences from daily memory |
+| **Conflict update** | When new info contradicts old entries, newer info takes precedence |
+| **Clean invalid** | Remove temporary records, blank entries, formatting artifacts |
+| **Remove redundancy** | Delete old entries already covered by more refined statements |
 
-## 梦境日记
+## Dream Diary
 
-每次蒸馏会生成一篇梦境日记，保存在 `memory/dreams/YYYY-MM-DD.md`，用叙事风格记录：
+Each distillation generates a dream diary saved at `memory/dreams/YYYY-MM-DD.md`, written in a narrative style recording:
 
-- 发现了哪些重复或矛盾
-- 从天级记忆中提取了什么新洞察
-- 做了哪些清理和优化
-- 整体感受和观察
+- Duplications or contradictions found
+- New insights extracted from daily memory
+- Cleanups and optimizations performed
+- Overall observations
 
-梦境日记可在 Web 控制台的「记忆管理 → 梦境日记」tab 中查看。
+Dream diaries can be viewed in the Web console under "Memory → Dream Diary" tab.
 
 <Frame>
   <img src="https://cdn.link-ai.tech/doc/20260414110032.png" width="800" />
 </Frame>
 
-## 手动触发
+## Manual Trigger
 
-除了每日自动执行外，也可以在对话中手动触发：
+In addition to the automatic daily run, you can manually trigger distillation in chat:
 
 ```text
 /memory dream [N]
 ```
 
-- `N`：整理近 N 天的记忆（默认 3 天，最大 30 天）
-- 蒸馏在后台异步执行，完成后在对话中通知结果
-- Web 端通知包含可点击链接，直接跳转查看 MEMORY.md 和梦境日记
-- 无需 Agent 初始化，首次对话前即可使用
-
-<Frame>
-  <img src="https://cdn.link-ai.tech/doc/20260414120158.png" width="800" />
-</Frame>
+- `N`: Consolidate the last N days of memory (default 3, max 30)
+- Runs asynchronously in the background; you'll be notified in chat when complete
+- Web notifications include clickable links to view MEMORY.md and dream diary
+- Works without Agent initialization — can be used before the first conversation
 
 <Tip>
-  首次部署后可以手动执行一次 `/memory dream 30`，将历史天级记忆全量蒸馏到 MEMORY.md。
+  After first deployment, it's recommended to run `/memory dream 30` once to distill all historical daily memories into MEMORY.md.
 </Tip>
 
-## 安全机制
+## Safety Mechanisms
 
-| 机制 | 说明 |
+| Mechanism | Description |
 | --- | --- |
-| **无新内容跳过** | 没有天级记忆时不执行蒸馏，避免空覆写 |
-| **输入去重** | 定时任务中，输入材料未变化时自动跳过 |
-| **异步执行** | 蒸馏在后台线程运行，不阻塞对话 |
-| **顺序保证** | 定时任务中，天级 flush 全部完成后才启动蒸馏 |
-| **禁止编造** | 提示词明确约束只能基于已有材料整理，不得推测或添加 |
+| **Skip on no content** | Distillation skipped when no daily memory exists, avoiding empty overwrites |
+| **Input dedup** | In scheduled tasks, automatically skipped when input materials haven't changed |
+| **Async execution** | Distillation runs in a background thread, never blocking conversation |
+| **Sequential guarantee** | In scheduled tasks, daily flush completes before distillation starts |
+| **No fabrication** | Prompt explicitly constrains consolidation to existing materials only |