feat: CI/CD pipeline + Learning/Medicine/Travel services

- Add Gitea Actions workflow for automated build & deploy
- Add K8s manifests: webui, travel-svc, medicine-svc, sandbox-svc
- Update kustomization for localhost:5000 registry
- Add ingress for gooseek.ru and api.gooseek.ru
- Learning cabinet with onboarding, courses, sandbox integration
- Medicine service with symptom analysis and doctor matching
- Travel service with itinerary planning
- Server setup scripts (NVIDIA/CUDA, K3s, Gitea runner)

Made-with: Cursor

backend/internal/agent/travel_data_client.go

@@ -1,6 +1,7 @@
 package agent
 
 import (
+	"bytes"
 	"context"
 	"encoding/json"
 	"fmt"
@@ -40,6 +41,24 @@ func NewTravelDataClient(baseURL string) *TravelDataClient {
 }
 
 func (c *TravelDataClient) doWithRetry(ctx context.Context, req *http.Request) (*http.Response, error) {
+	// http.Request.Clone does NOT recreate the Body. If we retry a request with a Body,
+	// we must be able to recreate it; otherwise retries will send an empty body and may
+	// fail with ContentLength/body length mismatch.
+	var bodyCopy []byte
+	if req.Body != nil && req.GetBody == nil {
+		b, err := io.ReadAll(req.Body)
+		if err != nil {
+			return nil, fmt.Errorf("read request body for retry: %w", err)
+		}
+		_ = req.Body.Close()
+		bodyCopy = b
+		req.GetBody = func() (io.ReadCloser, error) {
+			return io.NopCloser(bytes.NewReader(bodyCopy)), nil
+		}
+		req.Body = io.NopCloser(bytes.NewReader(bodyCopy))
+		req.ContentLength = int64(len(bodyCopy))
+	}
+
 	var lastErr error
 	for attempt := 0; attempt <= c.maxRetries; attempt++ {
 		if attempt > 0 {
@@ -51,7 +70,18 @@ func (c *TravelDataClient) doWithRetry(ctx context.Context, req *http.Request) (
 			}
 		}
 
-		resp, err := c.httpClient.Do(req.Clone(ctx))
+		reqAttempt := req.Clone(ctx)
+		if req.GetBody != nil {
+			rc, err := req.GetBody()
+			if err != nil {
+				lastErr = err
+				continue
+			}
+			reqAttempt.Body = rc
+			reqAttempt.ContentLength = req.ContentLength
+		}
+
+		resp, err := c.httpClient.Do(reqAttempt)
 		if err != nil {
 			lastErr = err
 			continue
@@ -306,13 +336,16 @@ func (c *TravelDataClient) SearchHotels(ctx context.Context, lat, lng float64, c
 
 // PlaceResult represents a place from 2GIS Places API.
 type PlaceResult struct {
-	ID      string  `json:"id"`
-	Name    string  `json:"name"`
-	Address string  `json:"address"`
-	Lat     float64 `json:"lat"`
-	Lng     float64 `json:"lng"`
-	Type    string  `json:"type"`
-	Purpose string  `json:"purpose"`
+	ID          string            `json:"id"`
+	Name        string            `json:"name"`
+	Address     string            `json:"address"`
+	Lat         float64           `json:"lat"`
+	Lng         float64           `json:"lng"`
+	Type        string            `json:"type"`
+	Purpose     string            `json:"purpose"`
+	Rating      float64           `json:"rating"`
+	ReviewCount int               `json:"reviewCount"`
+	Schedule    map[string]string `json:"schedule,omitempty"`
 }
 
 func (c *TravelDataClient) SearchPlaces(ctx context.Context, query string, lat, lng float64, radius int) ([]PlaceResult, error) {