fix(deploy-mining): 修正 full-reset 步骤顺序避免 CDC offset 重置失败

- 在 migration 之前重置 CDC offsets（因为 migration 会启动容器）
- 停止服务后等待 15 秒让 Kafka consumer 变成 inactive
- 添加重试机制，最多重试 3 次，每次间隔 10 秒
- 步骤从 6 步改为 7 步

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

backend/services/deploy-mining.sh

@@ -724,49 +724,62 @@ full_reset() {
     fi
 
     echo ""
-    log_step "Step 1/6: Stopping 2.0 services..."
+    log_step "Step 1/7: Stopping 2.0 services..."
     for service in "${MINING_SERVICES[@]}"; do
         service_stop "$service"
     done
 
-    log_step "Step 2/6: Dropping 2.0 databases..."
-    db_drop
+    log_step "Step 2/7: Waiting for Kafka consumers to become inactive..."
+    log_info "Waiting 15 seconds for consumer group session timeout..."
+    sleep 15
 
-    log_step "Step 3/6: Creating 2.0 databases..."
-    db_create
-
-    log_step "Step 4/6: Running migrations..."
-    db_migrate
-
-    log_step "Step 5/6: Resetting CDC consumer offsets..."
-    # Reset all CDC consumer groups
+    log_step "Step 3/7: Resetting CDC consumer offsets..."
+    # Reset offsets BEFORE migrations (which may start containers)
     for group in "${CDC_CONSUMER_GROUPS[@]}"; do
         log_info "Resetting consumer group: $group"
+        local reset_success=false
+        local retry_count=0
+        local max_retries=3
 
-        # Try local kafka-consumer-groups.sh first
-        if command -v kafka-consumer-groups.sh &>/dev/null; then
-            kafka-consumer-groups.sh --bootstrap-server "$KAFKA_BROKERS" \
-                --group "$group" \
-                --reset-offsets \
-                --to-earliest \
-                --all-topics \
-                --execute 2>/dev/null && log_success "CDC offsets reset for $group" && continue
-        fi
-
+        while [ "$reset_success" = false ] && [ $retry_count -lt $max_retries ]; do
             # Try docker exec with the correct container name
             if docker ps --format '{{.Names}}' 2>/dev/null | grep -q "^${KAFKA_CONTAINER}$"; then
-            docker exec "$KAFKA_CONTAINER" kafka-consumer-groups --bootstrap-server localhost:9092 \
+                if docker exec "$KAFKA_CONTAINER" kafka-consumer-groups --bootstrap-server localhost:9092 \
                     --group "$group" \
                     --reset-offsets \
                     --to-earliest \
                     --all-topics \
-                --execute 2>&1 && log_success "CDC offsets reset for $group" || log_warn "Could not reset offsets for $group"
+                    --execute 2>&1 | grep -q "NEW-OFFSET"; then
+                    log_success "CDC offsets reset for $group"
+                    reset_success=true
                 else
-            log_warn "Kafka container '$KAFKA_CONTAINER' not found. Manual offset reset may be needed."
+                    retry_count=$((retry_count + 1))
+                    if [ $retry_count -lt $max_retries ]; then
+                        log_warn "Consumer group still active, waiting 10s (retry $retry_count/$max_retries)..."
+                        sleep 10
+                    fi
+                fi
+            else
+                log_warn "Kafka container '$KAFKA_CONTAINER' not found"
+                break
             fi
         done
 
-    log_step "Step 6/6: Starting 2.0 services..."
+        if [ "$reset_success" = false ]; then
+            log_warn "Could not reset offsets for $group after $max_retries attempts"
+        fi
+    done
+
+    log_step "Step 4/7: Dropping 2.0 databases..."
+    db_drop
+
+    log_step "Step 5/7: Creating 2.0 databases..."
+    db_create
+
+    log_step "Step 6/7: Running migrations..."
+    db_migrate
+
+    log_step "Step 7/7: Starting 2.0 services..."
     for service in "${MINING_SERVICES[@]}"; do
         service_start "$service"
     done