TICKET-001: Implement Player Choice Handler

[FirebrickRed]

Priority: CRITICAL
Status: BLOCKED
Description: handlePlayersChoiceClick is empty - blocks all player selections (skills, languages, equipment choices)
Acceptance Criteria:

• Parse payload format: "pending_id|option_key"
• Update session's pending choices
• Handle toggle selection logic
• Validate choice completion before allowing progression
• Navigate to next menu when all choices complete