update skills

.agents/skills/cloudflare-deploy/references/do-storage/api.md

@@ -0,0 +1,102 @@
+# DO Storage API Reference
+
+## SQL API
+
+```typescript
+const cursor = this.sql.exec('SELECT * FROM users WHERE email = ?', email);
+for (let row of cursor) {} // Objects: { id, name, email }
+cursor.toArray(); cursor.one(); // Single row (throws if != 1)
+for (let row of cursor.raw()) {} // Arrays: [1, "Alice", "..."]
+
+// Manual iteration
+const iter = cursor[Symbol.iterator]();
+const first = iter.next(); // { value: {...}, done: false }
+
+cursor.columnNames; // ["id", "name", "email"]
+cursor.rowsRead; cursor.rowsWritten; // Billing
+
+type User = { id: number; name: string; email: string };
+const user = this.sql.exec<User>('...', userId).one();
+```
+
+## Sync KV API (SQLite only)
+
+```typescript
+this.ctx.storage.kv.get("counter"); // undefined if missing
+this.ctx.storage.kv.put("counter", 42);
+this.ctx.storage.kv.put("user", { name: "Alice", age: 30 });
+this.ctx.storage.kv.delete("counter"); // true if existed
+
+for (let [key, value] of this.ctx.storage.kv.list()) {}
+
+// List options: start, prefix, reverse, limit
+this.ctx.storage.kv.list({ start: "user:", prefix: "user:", reverse: true, limit: 100 });
+```
+
+## Async KV API (Both backends)
+
+```typescript
+await this.ctx.storage.get("key"); // Single
+await this.ctx.storage.get(["key1", "key2"]); // Multiple (max 128)
+await this.ctx.storage.put("key", value); // Single
+await this.ctx.storage.put({ "key1": "v1", "key2": { nested: true } }); // Multiple (max 128)
+await this.ctx.storage.delete("key");
+await this.ctx.storage.delete(["key1", "key2"]);
+await this.ctx.storage.list({ prefix: "user:", limit: 100 });
+
+// Options: allowConcurrency, noCache, allowUnconfirmed
+await this.ctx.storage.get("key", { allowConcurrency: true, noCache: true });
+await this.ctx.storage.put("key", value, { allowUnconfirmed: true, noCache: true });
+```
+
+### Storage Options
+
+| Option | Methods | Effect | Use Case |
+|--------|---------|--------|----------|
+| `allowConcurrency` | get, list | Skip input gate; allow concurrent requests during read | Read-heavy metrics that don't need strict consistency |
+| `noCache` | get, put, list | Skip in-memory cache; always read from disk | Rarely-accessed data or testing storage directly |
+| `allowUnconfirmed` | put, delete | Return before write confirms (still protected by output gate) | Non-critical writes where latency matters more than confirmation |
+
+## Transactions
+
+```typescript
+// Sync (SQL/sync KV only)
+this.ctx.storage.transactionSync(() => {
+  this.sql.exec('UPDATE accounts SET balance = balance - ? WHERE id = ?', 100, 1);
+  this.sql.exec('UPDATE accounts SET balance = balance + ? WHERE id = ?', 100, 2);
+  return "result";
+});
+
+// Async
+await this.ctx.storage.transaction(async () => {
+  const value = await this.ctx.storage.get("counter");
+  await this.ctx.storage.put("counter", value + 1);
+  if (value > 100) this.ctx.storage.rollback(); // Explicit rollback
+});
+```
+
+## Point-in-Time Recovery
+
+```typescript
+await this.ctx.storage.getCurrentBookmark();
+await this.ctx.storage.getBookmarkForTime(Date.now() - 2 * 24 * 60 * 60 * 1000);
+await this.ctx.storage.onNextSessionRestoreBookmark(bookmark);
+this.ctx.abort(); // Restart to apply; bookmarks lexically comparable (earlier < later)
+```
+
+## Alarms
+
+```typescript
+await this.ctx.storage.setAlarm(Date.now() + 60000); // Timestamp or Date
+await this.ctx.storage.getAlarm();
+await this.ctx.storage.deleteAlarm();
+
+async alarm() { await this.doScheduledWork(); }
+```
+
+## Misc
+
+```typescript
+await this.ctx.storage.deleteAll(); // Atomic for SQLite; alarm NOT included
+this.ctx.storage.sql.databaseSize; // Bytes
+```