fix: Markdown-Lint errors in .github/copilot-instructions.md

[kevalyq]

Problem

Pre-commit checks fail due to 88 markdown-lint errors in .github/copilot-instructions.md:

markdownlint-cli2 v0.18.1 (markdownlint v0.38.0)
Summary: 88 error(s)

Common errors:

• MD022/blanks-around-headings: Headings should be surrounded by blank lines
• MD032/blanks-around-lists: Lists should be surrounded by blank lines
• MD012/no-multiple-blanks: Multiple consecutive blank lines
• MD007/ul-indent: Unordered list indentation

This blocks git push operations and requires --no-verify to bypass.

Impact

• ❌ Pre-commit hooks fail on all branches
• ❌ Requires manual --no-verify on every push
• ❌ Inconsistent code quality enforcement

Solution

Fix all markdown-lint violations in .github/copilot-instructions.md:

1. Add blank lines around all headings
2. Add blank lines around all lists
3. Remove multiple consecutive blank lines
4. Fix list indentation (use 2 spaces, not 4)

Acceptance Criteria

• All markdown-lint errors fixed
• Pre-commit hooks pass without --no-verify
• File still readable and well-formatted
• No functional changes to content

Commands to Test

# Check current errors
npx markdownlint-cli2 '.github/copilot-instructions.md'

# Auto-fix what's possible
npx markdownlint-cli2 --fix '.github/copilot-instructions.md'

# Verify pre-commit passes
./scripts/preflight.sh

Priority

Low - Does not block functionality, but affects developer experience.

Related

• Discovered during work on RBAC Phase 4: Documentation & Final Testing #108 (RBAC Phase 4)

[github-actions]

✅ This issue has been added to the SecPal Feature Roadmap with status: 💡 Ideas

New idea - needs discussion and evaluation

Status Flow:
💡 Ideas → 💬 Discussion → 📥 Backlog → 📋 Planned → 🚧 In Progress → 👀 In Review → ✅ Done

Note: Ideas that won't be implemented should be moved to 🚫 Won't Do with a reason.