feat(gamification): implement XP rewards, level-up effects, skill upg…

[Unclebaffa]

Comprehensive Implementation Summary: Gamification Layer EPIC

🎯 Overview & Objectives

The Gamification Layer turns agent operation and platform interactions on Open-Stellar into an interactive game system. Agents gain XP by executing tasks and completing quests, level up, upgrade specialized skills in skill trees, earn rare achievement badges, and demonstrate on-chain validity on leaderboards via Soroban ZK Attestations.

---

🚀 Key Features Implemented

1. XP & Agent Leveling System

• Automatic Task XP: Completing agent tasks (applyReputationAction) automatically calculates earned XP (awardXP in lib/gamification/xp.ts) based on task complexity, execution time, and outcome.
• Level-Up Progression: Tracks XP thresholds per level. When accumulated XP reaches xpToNext, the agent levels up (checkLevelUp), updating level stats and triggering system events.
• UI Notifications & Particles:
  • Leveraged toast.success notifications to pop up when an agent levels up.
  • Implemented glowing level-up toasts, sound effects, and XP particle bursts in components/open-stellar/open-stellar-hub.tsx.

---

2. Skill Tree Upgrades

• Skill Progression: Agents earn XP across specific skill branches (e.g., Data Processing, Stellar RPC, x402 Micropayments).
• Skill Tree Panel:
  • Updated the UI in SkillsPanel to handle skill upgrade actions cleanly.
  • Spending accumulated agent XP levels up individual skills and recalculates xpToNext.
  • Added user feedback via toast notifications (toast.success for successful upgrades, toast.error for insufficient XP).

---

3. Quest & Mission System

• Quest Completion: Handled quest claiming in app/api/quests/[id]/apply/route.ts.
• Rewards: Claiming daily/weekly quests awards bonus XP to the completing agent and emits quest.completed system events with detailed metadata.

---

4. Achievement Badges & Reputation

• Badge Engine: Added awardBadgeToAgent in lib/reputation/reputation-store.ts to award achievement badges to agents upon reaching major milestones (e.g., First Task, 100 Tasks, Quest Master).
• Agent Profile Badges:
  • Implemented badge query API in app/agents/[id]/page.tsx.
  • Designed rare achievement cards with rarity styling (Common, Rare, Epic, Legendary), descriptions, and date earned.

---

5. Leaderboard & Soroban On-Chain Attestation

• Attestation Integration: Extended lib/leaderboard.ts and components/leaderboard/leaderboard-table.tsx to attach earnedBadges count and Soroban ZK Attestation hashes.
• Verified Status Tag: Top agents on district and global leaderboards now display a 🛡️ Soroban Verified status badge with direct links to the Stellar Explorer.

---

🛠️ Codebase Fixes & Refinements

1. x402 Subscription Grace State: Fixed renewX402Subscriptions in lib/protocols/x402.ts to preserve grace and paused subscription states when balance isn't explicitly supplied.
2. Windows File Lock Fallback: Added a try/catch fallback in lib/agents/agent-error-store.ts for atomic file writes to prevent EPERM locks during multi-threaded Vitest runs.
3. Reputation Scope Enforcement: Fixed API task handler calls in app/api/agents/[id]/tasks/[taskId]/route.ts by supplying required scope: "service".
4. Clean Build & Linting: Fixed ESLint errors in app/offline/page.tsx and lib/passport/validator-client.ts.

---

🧪 Verification & Test Coverage

• New Unit Tests: Created __tests__/gamification-epic.test.ts covering XP calculation, level-up threshold progression, quest reward application, badge issuing, and leaderboard attestation structure.
• Test Suite Results:
  • npx vitest run: 89/89 test files passed (577/577 tests)
  • npx tsc --noEmit: 0 TypeScript errors
  • npm run lint: 0 ESLint errors
  • npm run build: Next.js production bundle built and compiled cleanly in 96s

---

📦 Git Delivery

• Branch: feat/gamification-layer
• Commit: feat(gamification): implement XP rewards, level-up effects, skill upgrades, badges & Soroban attestation (feaaad2)
• Remote PR: Ready for review at https://github.com/Unclebaffa/Open-Stellar/pull/new/feat/gamification-layer

Closes #19

[sonarqubecloud]

Quality Gate failed

Failed conditions
C Security Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

Catch issues before they fail your Quality Gate with our IDE extension SonarQube for IDE