fix: Add debounced Undo/Redo system to avoid character-by-character history

- Add debounced state updates for title and content (500ms delay)
- Immediate UI updates with delayed history saving
- Prevent one-letter-per-undo issue
- Add cleanup for debounce timers on unmount

mcp-server/node_modules/ajv/lib/vocabularies/validation/limitContains.ts

@@ -0,0 +1,16 @@
+import type {CodeKeywordDefinition} from "../../types"
+import type {KeywordCxt} from "../../compile/validate"
+import {checkStrictMode} from "../../compile/util"
+
+const def: CodeKeywordDefinition = {
+  keyword: ["maxContains", "minContains"],
+  type: "array",
+  schemaType: "number",
+  code({keyword, parentSchema, it}: KeywordCxt) {
+    if (parentSchema.contains === undefined) {
+      checkStrictMode(it, `"${keyword}" without "contains" is ignored`)
+    }
+  },
+}
+
+export default def