chore: remove obsolete files and update CI to Go

Removed old Rust-era documentation, scripts, and migrations. Updated GitHub Actions workflow to use Go 1.22.

.github/workflows/ci.yml

@@ -6,56 +6,44 @@ on:
   pull_request:
     branches: [main]
 
-env:
-  CARGO_TERM_COLOR: always
-  RUST_BACKTRACE: 1
-
 jobs:
-  check:
-    name: Check
+  lint:
+    name: Lint
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-      - uses: Swatinem/rust-cache@v2
-      - run: cargo check --all-targets
-
-  clippy:
-    name: Clippy
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
+      - name: Set up Go
+        uses: actions/setup-go@v5
         with:
-          components: clippy
-      - uses: Swatinem/rust-cache@v2
-      - run: cargo clippy --all-targets -- -D warnings
-
-  fmt:
-    name: Formatting
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
+          go-version: '1.22'
+          cache: true
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v4
         with:
-          components: rustfmt
-      - run: cargo fmt --all -- --check
+          version: latest
 
   test:
     name: Test
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-      - uses: Swatinem/rust-cache@v2
-      - run: cargo test --all-targets
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+          cache: true
+      - name: Run Tests
+        run: go test -v ./...
 
-  build-release:
-    name: Release Build
+  build:
+    name: Build
     runs-on: ubuntu-latest
-    needs: [check, clippy, test]
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-      - uses: Swatinem/rust-cache@v2
-      - run: cargo build --release
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+          cache: true
+      - name: Build
+        run: go build -v -o llm-proxy ./cmd/llm-proxy