documentation: add MEMORY_WATCHDOG_DEBUG

[EvilOlaf]

as per title

Summary by CodeRabbit

• Documentation
  • Updated memory watchdog configuration documentation to include the MEMORY_WATCHDOG_DEBUG environment variable.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 30102aad-b8b8-42b3-b5ea-5dc8ac71f8a7

📥 Commits

Reviewing files that changed from the base of the PR and between cb070cf and 28ebf08.

📒 Files selected for processing (1)

• README.md

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Walkthrough

This pull request adds a single line of documentation to the README, specifically documenting the MEMORY_WATCHDOG_DEBUG environment variable within the memory watchdog configuration section.

Changes

Cohort / File(s)	Summary
Documentation README.md	Added MEMORY_WATCHDOG_DEBUG environment variable to memory watchdog configuration documentation.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• watchdog: add debug message and show memory usage at startup #42: Implements the default and debug behavior of MEMORY_WATCHDOG_DEBUG variable that this PR documents.
• Add memory watchdog #33: Introduces the memory watchdog feature whose configuration is being documented in this PR.
• Update README.md and prepare new version #35: Also modifies the README's memory watchdog configuration section with related environment variables.

Poem

🐰 A line was added, so small yet profound,
Documenting the watchdog's debug ground,
With whiskers twitching at clarity's gain,
The README now sparkles, clear as refrain! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'documentation: add MEMORY_WATCHDOG_DEBUG' directly and accurately reflects the changeset, which adds documentation for the MEMORY_WATCHDOG_DEBUG environment variable to the README.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch EvilOlaf-patch-1

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