[Action Required] Weighted Priority Calculation for Action Items

**Section:** İş Mantığı (Prioritization)
**Component:** src/lib/api/github-graphql-client.ts
**Priority:** High

**Details:**
- The `calculateActionPriority` function should consider not only tag and age, but also comment count, PR size (if available via API), and status type (Review Request, Mention, Assigned).

**Impact:**
Provides more accurate and actionable priority ranking for users.