chore: deny leaks, let fmt indent .rs files

[nyurik]

• I agree to follow the project's code of conduct.
  - [ ] I added an entry to CHANGES.md if knowledge of this change could be valuable to users.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.81%. Comparing base (c1ee931) to head (9374fd8).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #48   +/-   ##
=======================================
  Coverage   73.81%   73.81%           
=======================================
  Files           4        4           
  Lines         317      317           
=======================================
  Hits          234      234           
  Misses         83       83           

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[Copilot]

Pull request overview

This PR tightens linting to prevent intentional memory leaks via Box::leak / Vec::leak, and adjusts repository-wide formatting policy via .editorconfig.

Changes:

• Forbid clippy::disallowed_methods and configure it to disallow Box::leak / Vec::leak (std + alloc).
• Remove most indentation rules from .editorconfig, leaving only YAML indentation configured.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
clippy.toml	Adds a disallowed-methods list targeting Box::leak / Vec::leak.
Cargo.toml	Sets clippy::disallowed_methods lint level to forbid.
.editorconfig	Removes global/Markdown/license/lock indentation rules; keeps YAML at 2 spaces.

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