v2: Initial clean branch with unit tests + CI/CD pipeline

- Started from ac75faa (initial E4B-MarkBase integration)
- Kept Sources/ (all engine code) + Package.swift + .gitignore
- Removed all ad-hoc tests, documentation, scripts, Python files
- Added Tests/00_Unit/ (MathTest, TokenizerTest, SamplerTest)
- Added .gitea/workflows/ci.yaml (build + unit tests + lint)
- Added Scripts/check_resources.sh (memory-aware test runner)
- Added Tests/Manifest.json (resource requirements for all tests)
- Focus: 4-bit quantized models only

.gitea/workflows/ci.yaml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    branches: [ v2 ]
+  pull_request:
+    branches: [ v2 ]
+
+jobs:
+  build:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build Swift
+        run: swift build -c debug
+
+      - name: Build Release
+        run: swift build -c release
+
+  unit-tests:
+    needs: build
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run Unit Tests
+        run: swift test --filter "00_Unit"
+
+  lint:
+    needs: build
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Check for debug prints
+        run: |
+          if grep -r "print(" Sources/MarkBase/ --include="*.swift" | grep -v "//.*print" | grep -v "Error"; then
+            echo "WARNING: Debug print() found in Sources/"
+            exit 0
+          fi
+          echo "No debug prints found"