v3.5 — Leaner skill, same output

Trimmed ~39 lines of unnecessary rationale and redundancy from the Anki flashcard generator skill (236 → ~197 lines), without removing any functional instructions that affect card generation behaviour.

What changed

• Removed cognitive science rationale from Core Design Principles — Explanatory paragraphs about forgetting curves, meta-analytic effect sizes, neural encoding circuits, and picture superiority effects were removed. The actionable rules and heuristics they supported are unchanged.
• Removed Leech prevention subsection — Every bullet was already covered by existing rules (atomicity, unambiguous phrasing, compare/contrast cards, understand-first).
• Removed Cloze cards and Conciseness rationale paragraphs — Kept the usage guidance and rules; removed the research justifications.
• Trimmed Quality Checklist from 14 items to 5 — Removed 9 items that directly restated rules from card type sections or other parts of the skill. The 5 remaining items cover checks not already enforced elsewhere.
• Removed dual coding HTML comment — A disabled comment explaining why image tags were off; the active instruction already covered this.

What was deliberately kept

High-impact redundancies were retained where they reinforce critical rules: bidirectional definition cards, production over recognition, understand-first, diagram exclusion, and interference management.

Net result

Every remaining line directly influences card generation behaviour. Zero functional instructions lost.