conductor(setup): Add conductor setup files

conductor/code_styleguides/javascript.md

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+# Google JavaScript Style Guide Summary
+
+This document summarizes key rules and best practices from the Google JavaScript Style Guide.
+
+## 1. Source File Basics
+- **File Naming:** All lowercase, with underscores (`_`) or dashes (`-`). Extension must be `.js`.
+- **File Encoding:** UTF-8.
+- **Whitespace:** Use only ASCII horizontal spaces (0x20). Tabs are forbidden for indentation.
+
+## 2. Source File Structure
+- New files should be ES modules (`import`/`export`).
+- **Exports:** Use named exports (`export {MyClass};`). **Do not use default exports.**
+- **Imports:** Do not use line-wrapped imports. The `.js` extension in import paths is mandatory.
+
+## 3. Formatting
+- **Braces:** Required for all control structures (`if`, `for`, `while`, etc.), even single-line blocks. Use K&R style ("Egyptian brackets").
+- **Indentation:** +2 spaces for each new block.
+- **Semicolons:** Every statement must be terminated with a semicolon.
+- **Column Limit:** 80 characters.
+- **Line-wrapping:** Indent continuation lines at least +4 spaces.
+- **Whitespace:** Use single blank lines between methods. No trailing whitespace.
+
+## 4. Language Features
+- **Variable Declarations:** Use `const` by default, `let` if reassignment is needed. **`var` is forbidden.**
+- **Array Literals:** Use trailing commas. Do not use the `Array` constructor.
+- **Object Literals:** Use trailing commas and shorthand properties. Do not use the `Object` constructor.
+- **Classes:** Do not use JavaScript getter/setter properties (`get name()`). Provide ordinary methods instead.
+- **Functions:** Prefer arrow functions for nested functions to preserve `this` context.
+- **String Literals:** Use single quotes (`'`). Use template literals (`` ` ``) for multi-line strings or complex interpolation.
+- **Control Structures:** Prefer `for-of` loops. `for-in` loops should only be used on dict-style objects.
+- **`this`:** Only use `this` in class constructors, methods, or in arrow functions defined within them.
+- **Equality Checks:** Always use identity operators (`===` / `!==`).
+
+## 5. Disallowed Features
+- `with` keyword.
+- `eval()` or `Function(...string)`.
+- Automatic Semicolon Insertion.
+- Modifying builtin objects (`Array.prototype.foo = ...`).
+
+## 6. Naming
+- **Classes:** `UpperCamelCase`.
+- **Methods & Functions:** `lowerCamelCase`.
+- **Constants:** `CONSTANT_CASE` (all uppercase with underscores).
+- **Non-constant Fields & Variables:** `lowerCamelCase`.
+
+## 7. JSDoc
+- JSDoc is used on all classes, fields, and methods.
+- Use `@param`, `@return`, `@override`, `@deprecated`.
+- Type annotations are enclosed in braces (e.g., `/** @param {string} userName */`).
+
+*Source: [Google JavaScript Style Guide](https://google.github.io/styleguide/jsguide.html)*