Add Codecov integration

Author: altbogachev

.github/workflows/codecov.yml

@@ -0,0 +1,37 @@
+name: Test Coverage
+
+on:
+  push:
+    branches: [main, dev]
+  pull_request:
+    branches: [main, dev]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests with coverage
+        run: npm run test:report
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./coverage/lcov.info
+          flags: unittests
+          name: codecov-strike
+          fail_ci_if_error: false
+          verbose: true

README.md

@@ -1,5 +1,8 @@
 # Strike - NFT-Gated Gaming Platform
 
+[![codecov](https://codecov.io/gh/proofofgame/strike/branch/main/graph/badge.svg)](https://codecov.io/gh/proofofgame/strike)
+[![Tests](https://github.com/proofofgame/strike/actions/workflows/codecov.yml/badge.svg)](https://github.com/proofofgame/strike/actions/workflows/codecov.yml)
+
 A blockchain-based gaming platform built on Stacks, featuring NFT-gated access and session-based gameplay with STX and sBTC rewards.
 
 ## Key Features
@@ -362,17 +365,6 @@ NFT contract with marketplace functionality implementing SIP-009 standard.
 - **ERR-LISTING** (u206): NFT listing error
 - **ERR-INVALID-SLOT** (u207): Slot number must be 1-5
 
-#### Error Codes
-
-- `200` - ERR-SOLD-OUT: Mint limit reached
-- `201` - ERR-WRONG-COMMISSION: Commission contract mismatch
-- `202` - ERR-NOT-AUTHORIZED: Caller not authorized
-- `203` - ERR-NOT-FOUND: NFT not found
-- `204` - ERR-METADATA-FROZEN: Metadata cannot be changed
-- `205` - ERR-MINT-ALREADY-SET: Mint address already configured
-- `206` - ERR-LISTING: NFT listing error
-- `207` - ERR-INVALID-SLOT: Slot number must be 1-5
-
 ## Development
 
 ### Setup

codecov.yml

@@ -0,0 +1,29 @@
+codecov:
+  require_ci_to_pass: yes
+
+coverage:
+  precision: 2
+  round: down
+  range: "70...100"
+
+  status:
+    project:
+      default:
+        target: 70%
+        threshold: 5%
+        base: auto
+    patch:
+      default:
+        target: 80%
+        threshold: 5%
+
+ignore:
+  - "tests/**"
+  - "node_modules/**"
+  - "*.config.js"
+  - "*.config.ts"
+
+comment:
+  layout: "reach,diff,flags,files,footer"
+  behavior: default
+  require_changes: no