docs: remove dead Zsh plugin integration

[elkaix]

The zsh-pythinker-code repo 404s under both the current owner (elkaix) and the former handle (mohamed-elkholy95), so the Zsh-plugin section linked only to dead URLs. This removes the section; the page keeps its intro.

Out of scope (intentionally left): the other mohamed-elkholy95 references in feedback_repo.py + its tests are the legacy migrate-from owner (rewritten to Pythoughts-labs/pythinker-code); renaming them would break feedback migration and its tests. The superpowers/* specs reference another repo's (pythinker-home) config and are doc-only.

Summary by CodeRabbit

• Documentation
  • Updated integrations guide.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Run ID: a14c9d09-90ec-400b-ab3d-ddccfa9da1a6

📥 Commits

Reviewing files that changed from the base of the PR and between b9c85db and dc4726e.

📒 Files selected for processing (1)

• docs/en/guides/integrations.md

💤 Files with no reviewable changes (1)

• docs/en/guides/integrations.md

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📝 Walkthrough

Walkthrough

The integrations guide was simplified by removing the Zsh plugin documentation section entirely. The page now contains only the top-level heading and introductory paragraph about integrations with other tools.

Changes

Cohort / File(s)	Summary
Documentation cleanup docs/en/guides/integrations.md	Removed entire Zsh plugin integration section (33 lines), including installation instructions, usage guidance, and README reference. Page retains only the main heading and intro paragraph.

🎯 1 (Trivial) | ⏱️ ~3 minutes

documentation

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	The description explains why the change was made (dead URLs) and proactively addresses scope boundaries, but lacks the template structure including Related Issue section and checklist items.	Add the Related Issue section (e.g., 'Resolve #(issue_number)') and complete the checklist items to match the required template format.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'docs: remove dead Zsh plugin integration' follows conventional commits format with 'docs' type and clearly describes the main change.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/remove-dead-zsh-integration

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