v1.7.7 — Smarter Lint Rules

Lint accuracy improvements (tested against real-world repos):

Reduced false positives:

• Vague rule detection is now context-aware: qualified phrases like 'be consistent with WordPress conventions' are no longer flagged
• Fixed false positives on empty description values and description-in-body check

New checks:

• Dead rule detection: Rules with alwaysApply: false and empty/missing globs now flagged as ERROR ('Rule will never load')
• Empty frontmatter values: Catches description: and globs: with no value (common copy-paste mistake)

All 80 tests passing.