docs: enhance LLM instructions (qwik-concepts.md) for AI editors

[sebacc92]

docs: enhance LLM instructions (qwik-concepts.md) for AI editors

What is it?

• Docs / tests / types / typos

Description

This PR significantly improves the qwik-concepts.md file (used as context for LLMs/AI Agents like Cursor, Antigravity, and Copilot).

Motivation:
Current LLMs often "hallucinate" React patterns (like useEffect or useState) when writing Qwik code. This update provides a stricter "System Prompt" style to force the correct mental model.

Changes:

1. Added "Critical Anti-Patterns": Explicitly forbidding useEffect, useState, and nested Stores.
2. Added React-to-Qwik Translation Table: A side-by-side guide for the AI to translate concepts (e.g., useEffect -> useTask$).
3. Refined Task Usage: Clarified that useVisibleTask$ should be avoided in favor of useTask$ or useOnDocument to preserve Resumability.
4. Syntax Rules: Added explicit rules for class vs className and sync$ events.

This incorporates feedback from previous discussions (PR #7729) to make the instructions robust for autonomous agents.

Checklist

• My code follows the developer guidelines of this project
• I performed a self-review of my own code
• I added a changeset with pnpm change (Skipped as this is a docs-only change for starters)
• I made corresponding changes to the Qwik docs
• I added new tests to cover the fix / functionality

[changeset-bot]

⚠️ No Changeset found

Latest commit: e2ab04c

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[wmertens]

[wmertens]

@sebacc92 please run prettier on the file to fix the lint error. I think the other error is transient