Language: TypeScript, ES2022 target, NodeNext module + resolution. Patterns: Web Components with @customElement decorators; class-based components extending DeesElement; styles via css/cssManager; template render via html tagged literal. Typing: Prefer explicit types where practical; tolerate `any` for external browser-injected libs (e.g., monaco) to keep build healthy. Config: skipLibCheck enabled to avoid third-party d.ts breakages; exclude built declaration outputs. Formatting/Linting: Not explicitly configured; follow existing style (2-space indents, single quotes often, semicolons present).