Consolidates tool versions already declared across the project into a
single mise.toml so that `mise install` / `mise exec` activates the
correct runtime in one step.
Without an explicit project-level pin, mise falls back to the global
user config, silently using the wrong version even when .nvmrc is
present (legacy files rank below all mise config files).
Versions mirror existing project pins:
- node 24.13.0 (frontend/.nvmrc)
- pnpm 10.28.1 (frontend/package.json#packageManager)
- go 1.25.7 (go.mod)
renovate[bot]
kolaente
Brett Randall