feat(tools): repo_search with allowlist post-filter

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

internal/gitea/repos.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"net/url"
 )
 
 type Repo struct {
@@ -38,6 +39,37 @@ func (c *Client) ListRepos(ctx context.Context, owner string, page, limit int) (
 	return repos, nil
 }
 
+type repoSearchEnvelope struct {
+	Data []Repo `json:"data"`
+	OK   bool   `json:"ok"`
+}
+
+func (c *Client) SearchRepos(ctx context.Context, q, owner string, page, limit int) ([]Repo, error) {
+	if page < 1 {
+		page = 1
+	}
+	if limit < 1 {
+		limit = 30
+	}
+	path := fmt.Sprintf("/api/v1/repos/search?q=%s&page=%d&limit=%d",
+		url.QueryEscape(q), page, limit)
+	if owner != "" {
+		path += "&owner=" + url.QueryEscape(owner)
+	}
+	body, status, err := c.GetJSON(ctx, path)
+	if err != nil {
+		return nil, err
+	}
+	if err := MapStatus(status, body); err != nil {
+		return nil, err
+	}
+	var env repoSearchEnvelope
+	if err := json.Unmarshal(body, &env); err != nil {
+		return nil, err
+	}
+	return env.Data, nil
+}
+
 func (c *Client) GetRepo(ctx context.Context, owner, name string) (*Repo, error) {
 	path := fmt.Sprintf("/api/v1/repos/%s/%s", owner, name)
 	body, status, err := c.GetJSON(ctx, path)