feat(15-02): add Trello and Notion ReconSource implementations

- TrelloSource searches public Trello boards via /1/search API
- NotionSource uses dorking to discover and scrape public Notion pages
- Both credentialless, follow established Phase 10 pattern
- Tests with httptest mocks confirm Sweep emits findings

pkg/recon/sources/notion.go

@@ -0,0 +1,138 @@
+package sources
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"time"
+
+	"golang.org/x/time/rate"
+
+	"github.com/salvacybersec/keyhunter/pkg/providers"
+	"github.com/salvacybersec/keyhunter/pkg/recon"
+)
+
+// NotionSource searches publicly shared Notion pages for leaked API keys.
+// Notion pages shared with "anyone with the link" are indexable by search
+// engines. This source uses a dorking approach to discover such pages and
+// then scrapes their content for credentials.
+type NotionSource struct {
+	BaseURL  string
+	Registry *providers.Registry
+	Limiters *recon.LimiterRegistry
+	Client   *Client
+}
+
+var _ recon.ReconSource = (*NotionSource)(nil)
+
+func (s *NotionSource) Name() string               { return "notion" }
+func (s *NotionSource) RateLimit() rate.Limit       { return rate.Every(3 * time.Second) }
+func (s *NotionSource) Burst() int                  { return 2 }
+func (s *NotionSource) RespectsRobots() bool        { return true }
+func (s *NotionSource) Enabled(_ recon.Config) bool { return true }
+
+// notionSearchResponse represents dork search results pointing to Notion pages.
+type notionSearchResponse struct {
+	Results []notionSearchResult `json:"results"`
+}
+
+type notionSearchResult struct {
+	URL   string `json:"url"`
+	Title string `json:"title"`
+}
+
+func (s *NotionSource) Sweep(ctx context.Context, _ string, out chan<- recon.Finding) error {
+	base := s.BaseURL
+	if base == "" {
+		base = "https://search.notion.dev"
+	}
+	client := s.Client
+	if client == nil {
+		client = NewClient()
+	}
+
+	queries := BuildQueries(s.Registry, "notion")
+	if len(queries) == 0 {
+		return nil
+	}
+
+	for _, q := range queries {
+		if err := ctx.Err(); err != nil {
+			return err
+		}
+
+		if s.Limiters != nil {
+			if err := s.Limiters.Wait(ctx, s.Name(), s.RateLimit(), s.Burst(), false); err != nil {
+				return err
+			}
+		}
+
+		// Search for public Notion pages via dorking.
+		searchURL := fmt.Sprintf("%s/search?q=%s&format=json",
+			base, url.QueryEscape("site:notion.site OR site:notion.so "+q))
+		req, err := http.NewRequestWithContext(ctx, http.MethodGet, searchURL, nil)
+		if err != nil {
+			continue
+		}
+		req.Header.Set("Accept", "application/json")
+
+		resp, err := client.Do(ctx, req)
+		if err != nil {
+			continue
+		}
+
+		body, err := io.ReadAll(io.LimitReader(resp.Body, 256*1024))
+		_ = resp.Body.Close()
+		if err != nil {
+			continue
+		}
+
+		var results notionSearchResponse
+		if err := json.Unmarshal(body, &results); err != nil {
+			continue
+		}
+
+		// Fetch each discovered Notion page and scan for keys.
+		for _, result := range results.Results {
+			if err := ctx.Err(); err != nil {
+				return err
+			}
+
+			if s.Limiters != nil {
+				if err := s.Limiters.Wait(ctx, s.Name(), s.RateLimit(), s.Burst(), false); err != nil {
+					return err
+				}
+			}
+
+			pageReq, err := http.NewRequestWithContext(ctx, http.MethodGet, result.URL, nil)
+			if err != nil {
+				continue
+			}
+
+			pageResp, err := client.Do(ctx, pageReq)
+			if err != nil {
+				continue
+			}
+
+			pageBody, err := io.ReadAll(io.LimitReader(pageResp.Body, 256*1024))
+			_ = pageResp.Body.Close()
+			if err != nil {
+				continue
+			}
+
+			if ciLogKeyPattern.Match(pageBody) {
+				out <- recon.Finding{
+					ProviderName: q,
+					Source:       result.URL,
+					SourceType:   "recon:notion",
+					Confidence:   "medium",
+					DetectedAt:   time.Now(),
+				}
+			}
+		}
+	}
+	return nil
+}