feat: add logging config generator script (refs #81)

Create generate-log-config.sh that maps a single LOG_LEVEL env var to
per-container settings for Backend, Frontend, PostgreSQL, Redis, and
Traefik. Script validates input and generates .env.logging file.

Integrate script into staging and production CI/CD pipelines.
Remove obsolete SPRINTS.md calendar file.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitea/workflows/production.yaml

@@ -22,6 +22,7 @@ env:
   COMPOSE_FILE: docker-compose.yml
   COMPOSE_BLUE_GREEN: docker-compose.blue-green.yml
   HEALTH_CHECK_TIMEOUT: "60"
+  LOG_LEVEL: INFO
 
 jobs:
   # ============================================
@@ -105,6 +106,12 @@ jobs:
           cp "$GITHUB_WORKSPACE/docker-compose.yml" "$DEPLOY_PATH/"
           cp "$GITHUB_WORKSPACE/docker-compose.blue-green.yml" "$DEPLOY_PATH/"
 
+      - name: Generate logging configuration
+        run: |
+          cd "$DEPLOY_PATH"
+          chmod +x scripts/ci/generate-log-config.sh
+          ./scripts/ci/generate-log-config.sh "$LOG_LEVEL"
+
       - name: Login to registry
         run: |
           echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login -u "${{ secrets.REGISTRY_USER }}" --password-stdin "$REGISTRY"

.gitea/workflows/staging.yaml

@@ -18,6 +18,7 @@ env:
   COMPOSE_FILE: docker-compose.yml
   COMPOSE_STAGING: docker-compose.staging.yml
   HEALTH_CHECK_TIMEOUT: "60"
+  LOG_LEVEL: INFO
 
 jobs:
   # ============================================
@@ -117,6 +118,12 @@ jobs:
           cp "$GITHUB_WORKSPACE/docker-compose.yml" "$DEPLOY_PATH/"
           cp "$GITHUB_WORKSPACE/docker-compose.staging.yml" "$DEPLOY_PATH/"
 
+      - name: Generate logging configuration
+        run: |
+          cd "$DEPLOY_PATH"
+          chmod +x scripts/ci/generate-log-config.sh
+          ./scripts/ci/generate-log-config.sh "$LOG_LEVEL"
+
       - name: Login to registry
         run: |
           echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login -u "${{ secrets.REGISTRY_USER }}" --password-stdin "$REGISTRY"