chore: initialize EverOS 1.0.0

md-first memory extraction framework for AI agents.

Markdown is the single source of truth; SQLite holds state and LanceDB
provides the rebuildable vector + BM25 + scalar index. The codebase follows
a single-direction DDD layering (entrypoints -> service -> memory -> infra,
with component / core / config cross-cutting) enforced by import-linter.

Engineering surface:
- Coding conventions in .claude/rules/ (path-scoped) and workflows in
  .claude/skills/ (/commit, /new-branch, /pr).
- GitHub Actions CI runs make lint + test + integration; pre-commit mirrors
  the gates locally (ruff, hygiene hooks, gitlint commit-msg).
- Commit messages follow Conventional Commits, enforced by gitlint.
- make lint also enforces datetime two-zone discipline and OpenAPI drift.

use-cases/game-of-throne-demo/frontend/src/components/ChatInput.tsx

@@ -0,0 +1,59 @@
+import { useState, useRef, useEffect } from 'react';
+
+interface ChatInputProps {
+  onSend: (message: string) => void;
+  disabled: boolean;
+}
+
+export function ChatInput({ onSend, disabled }: ChatInputProps) {
+  const [input, setInput] = useState('');
+  const textareaRef = useRef<HTMLTextAreaElement>(null);
+
+  const handleSubmit = (e: React.FormEvent) => {
+    e.preventDefault();
+    if (input.trim() && !disabled) {
+      onSend(input.trim());
+      setInput('');
+    }
+  };
+
+  const handleKeyDown = (e: React.KeyboardEvent) => {
+    if (e.key === 'Enter' && !e.shiftKey) {
+      e.preventDefault();
+      handleSubmit(e);
+    }
+  };
+
+  // Auto-resize textarea
+  useEffect(() => {
+    if (textareaRef.current) {
+      textareaRef.current.style.height = 'auto';
+      const scrollHeight = textareaRef.current.scrollHeight;
+      const maxHeight = 5 * 24; // 5 lines * 24px line height
+      textareaRef.current.style.height = `${Math.min(scrollHeight, maxHeight)}px`;
+    }
+  }, [input]);
+
+  return (
+    <form onSubmit={handleSubmit} className="chat-input-form">
+      <textarea
+        ref={textareaRef}
+        value={input}
+        onChange={(e) => setInput(e.target.value)}
+        onKeyDown={handleKeyDown}
+        placeholder="Ask me anything about A Song of Ice and Fire..."
+        disabled={disabled}
+        className="chat-input-textarea"
+        rows={1}
+        maxLength={1000}
+      />
+      <button
+        type="submit"
+        disabled={disabled || !input.trim()}
+        className="chat-input-button"
+      >
+        Send
+      </button>
+    </form>
+  );
+}