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.

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🚀 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.

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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).

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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.

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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.

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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.

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🛠️ 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.

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🧪 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

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📦 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

[leocagli]

This PR is blocked by one check, and nobody told you

Heads up: the only thing standing between this PR and a merge is the SonarCloud Code Analysis quality gate, which is red. Everything else passes.

That failure has been sitting here without anyone explaining it, which is on us, not on you.

What to do: open the SonarCloud link in the failed check (or the sonarqubecloud[bot] comment above) and look at the New Code tab. The gate only judges the lines this PR touches, so it is usually a small number of issues. The common ones:

• coverage on new code below the threshold — add tests for the new functions
• duplicated blocks — factor out the repeated part
• code smells flagged as blocker/critical
• a security hotspot that needs review

Push a fix to the same branch and the gate re-runs on its own. Comment here when it is green and it gets merged.

If you think the gate is wrong about something, say so in a comment rather than working around it — sometimes it is, and we would rather discuss it than have you contort the code.