Harden Zip CLI against malformed and oversized input

[krotname]

Motivation

• The CLI entry point for algorithms.sprint0.Zip accepted unbounded sizes and input lines and trusted n and list contents, allowing EOF/NumberFormat/IndexOutOfBounds exceptions or large allocations from attacker-controlled stdin.
• The change aims to make the CLI robust against malformed, short, or excessively large input while preserving the existing zip behavior for valid inputs.

Description

• Add explicit limits (MAX_LIST_SIZE, MAX_INPUT_LINE_LENGTH) and validate n is within bounds before materializing lists.
• Introduce process(BufferedReader, BufferedWriter) as a guarded CLI processing entry and have main catch and report IllegalArgumentException and EOFException instead of letting those exceptions crash the process.
• Implement readBoundedLine to read lines character-by-character with length checks, and parseList to reuse Utils.readList on bounded input strings.
• Add regression tests in ZipTest covering valid input, missing/short lists, oversized n, and overly long input lines.

Testing

• Ran mvn -q -Dtest=algorithms.sprint0.ZipTest test and the test suite for Zip passed.
• Ran mvn -q verify and the project verification completed successfully.

---

Codex Task

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: e9aa16d5ab

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[krotname]

Закрываю как superseded by #116: изменения перенесены в одну проверенную ветку, все review findings учтены; локальный mvn verify прошёл полностью.