Dedent built-in algorithm source in the editor

[skratchdot]

Remove the two-space function-wrapper indentation and surrounding whitespace when loading built-in algorithms into Ace. Top-level statements start at column zero and nested indentation stays intact. Preserve custom source whitespace, including multiline string contents.

Uses a small string transformation with no formatter dependency or Ace extension.

Validation:

• pnpm run check passed, including 353 Vitest tests and the production build.
• The browser regression check verifies indentation and edits, saves, and executes all eight built-in algorithms successfully.
• Formatting and git whitespace checks passed.