docs: 整理表格格式并添加 CI 链接

DEVELOPMENT.md

@@ -42,7 +42,7 @@ hey -c 100 -n 100000 http://localhost:8080/
 ### Key Metrics to Watch
 
 | Metric               | Description                  |
-|--------|-------------|
+| -------------------- | ---------------------------- |
 | Requests/sec         | Throughput                   |
 | Average latency      | Mean response time           |
 | P99 latency          | Tail latency                 |
@@ -52,7 +52,7 @@ hey -c 100 -n 100000 http://localhost:8080/
 ### Flame Graph Hotspots
 
 | Expected Hotspot                  | Code Location    | Cause                                        |
-|------------------|---------------|-------|
+| --------------------------------- | ---------------- | -------------------------------------------- |
 | SSR rendering                     | Dioxus framework | Virtual DOM diff + render per request        |
 | `deadpool` connection acquisition | `src/db/mod.rs`  | Connection pool contention under concurrency |
 | `moka` cache lookup               | `src/cache.rs`   | Cache hit/miss overhead                      |
@@ -64,3 +64,7 @@ hey -c 100 -n 100000 http://localhost:8080/
 - `DB_POOL_SIZE` — increase if `deadpool` / `Semaphore` shows high in flame graph
 - `SSR_CACHE_SECS` — increase to cache SSR output longer
 - `TOKIO_WORKER_THREADS` — explicitly set worker thread count
+
+## CI
+
+https://git.rua.plus/api/v1/repos/xfy/yggdrasil/actions/tasks