Initial MVP implementation of Claudia Docs CLI

- Auth commands: login, logout, status
- Document commands: create, list, get, update, delete
- Project commands: list, get
- Folder commands: list, create
- Tag commands: list, create, add
- Search command
- Reasoning save command
- JSON output format with --output text option
- Viper-based configuration management
- Cobra CLI framework

internal/api/search.go

@@ -0,0 +1,72 @@
+package api
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+
+	"github.com/claudia/docs-cli/pkg/types"
+)
+
+// SearchClient handles search API calls
+type SearchClient struct {
+	client *Client
+}
+
+// NewSearchClient creates a new search client
+func NewSearchClient(c *Client) *SearchClient {
+	return &SearchClient{client: c}
+}
+
+// Search performs a full-text search
+func (s *SearchClient) Search(query, projectID, tags string) (*types.SearchResult, error) {
+	params := url.Values{}
+	params.Set("q", query)
+	if projectID != "" {
+		params.Set("project_id", projectID)
+	}
+	if tags != "" {
+		params.Set("tags", tags)
+	}
+
+	path := "/search?" + params.Encode()
+	resp, err := s.client.doRequest(http.MethodGet, path, nil)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read response: %w", err)
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, handleError(resp, body)
+	}
+
+	var searchResp types.Response
+	if err := decodeJSON(body, &searchResp); err != nil {
+		return nil, err
+	}
+
+	return mapToSearchResult(searchResp.Data, query), nil
+}
+
+func mapToSearchResult(data interface{}, query string) *types.SearchResult {
+	result := &types.SearchResult{Query: query}
+	if m, ok := data.(map[string]interface{}); ok {
+		if v, ok := m["documents"].([]interface{}); ok {
+			for _, item := range v {
+				if doc, ok := item.(map[string]interface{}); ok {
+					result.Documents = append(result.Documents, *mapToDocument(doc))
+				}
+			}
+		}
+		if v, ok := m["total"].(float64); ok {
+			result.Total = int(v)
+		}
+	}
+	return result
+}