ci: Gitea 환경으로 전환 (릴리즈 GitHub Actions → Gitea API)

- softprops/action-gh-release 제거
- Gitea REST API (PowerShell)로 릴리즈 생성 + launcher.exe 업로드

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -10,7 +10,6 @@ on:
 jobs:
   # ── 1. 정적 분석 + 빌드 + 테스트 ──────────────────────────────────────────
   test:
-    # Win32 API 의존성으로 Windows runner 필수
     runs-on: windows-latest
     steps:
       - uses: actions/checkout@v4
@@ -29,13 +28,11 @@ jobs:
       - name: Test
         run: go test ./... -v
 
-  # ── 2. 릴리즈 빌드 & GitHub Release 업로드 (태그 push 시만) ───────────────
+  # ── 2. Gitea Release 생성 + launcher.exe 업로드 (태그 push 시만) ──────────
   release:
     needs: test
     if: startsWith(github.ref, 'refs/tags/v')
     runs-on: windows-latest
-    permissions:
-      contents: write
     steps:
       - uses: actions/checkout@v4
 
@@ -46,11 +43,43 @@ jobs:
 
       - name: Build release binary
         run: |
-          $VERSION = "${{ github.ref_name }}"
-          go build -ldflags="-H windowsgui -s -w -X main.version=$VERSION" -o launcher.exe .
+          $version = "${{ github.ref_name }}"
+          go build -ldflags="-H windowsgui -s -w -X main.version=$version" -o launcher.exe .
 
-      - name: Create GitHub Release
-        uses: softprops/action-gh-release@v2
-        with:
-          files: launcher.exe
-          generate_release_notes: true
+      - name: Create Gitea release & upload launcher.exe
+        shell: pwsh
+        run: |
+          $version  = "${{ github.ref_name }}"
+          $repo     = "${{ github.repository }}"
+          $token    = "${{ secrets.GITEA_TOKEN }}"
+          $baseUrl  = "https://git.tolelom.xyz/api/v1"
+
+          $headers = @{
+            "Authorization" = "token $token"
+            "Content-Type"  = "application/json"
+          }
+
+          # 릴리즈 생성
+          $body = @{
+            tag_name = $version
+            name     = $version
+            body     = "Release $version"
+          } | ConvertTo-Json -Compress
+
+          $release = Invoke-RestMethod `
+            -Uri     "$baseUrl/repos/$repo/releases" `
+            -Method  Post `
+            -Headers $headers `
+            -Body    $body
+
+          # launcher.exe 업로드
+          $uploadHeaders = @{
+            "Authorization" = "token $token"
+            "Content-Type"  = "application/octet-stream"
+          }
+          $fileBytes = [System.IO.File]::ReadAllBytes("${{ github.workspace }}\launcher.exe")
+          Invoke-RestMethod `
+            -Uri     "$baseUrl/repos/$repo/releases/$($release.id)/assets?name=launcher.exe" `
+            -Method  Post `
+            -Headers $uploadHeaders `
+            -Body    $fileBytes