feat(14-01): add 5 CI/CD log sources (GitHubActions, TravisCI, CircleCI, Jenkins, GitLabCI)

- GitHubActionsSource: searches GitHub code search for workflow files with provider keywords (token-gated)
- TravisCISource: queries Travis CI v3 API for public build logs (credentialless)
- CircleCISource: queries CircleCI v2 pipeline API for build pipelines (token-gated)
- JenkinsSource: queries open Jenkins /api/json for job build consoles (credentialless)
- GitLabCISource: queries GitLab projects API for CI-enabled projects (token-gated)
- RegisterAll extended to 45 sources (40 Phase 10-13 + 5 Phase 14)
- Integration test updated with fixtures for all 5 new sources
- cmd/recon.go wires CIRCLECI_TOKEN env var

pkg/recon/sources/githubactions.go

@@ -0,0 +1,138 @@
+package sources
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	"golang.org/x/time/rate"
+
+	"github.com/salvacybersec/keyhunter/pkg/providers"
+	"github.com/salvacybersec/keyhunter/pkg/recon"
+)
+
+// GitHubActionsSource searches GitHub Actions workflow run logs for leaked API
+// keys. It queries the GitHub REST API for workflow runs matching provider
+// keywords (via the repository search endpoint) and emits findings for each
+// matching run. Requires a GitHub token (same as GitHubSource).
+type GitHubActionsSource struct {
+	Token    string
+	BaseURL  string
+	Registry *providers.Registry
+	Limiters *recon.LimiterRegistry
+	client   *Client
+}
+
+var _ recon.ReconSource = (*GitHubActionsSource)(nil)
+
+func (s *GitHubActionsSource) Name() string          { return "github_actions" }
+func (s *GitHubActionsSource) RateLimit() rate.Limit { return rate.Every(2 * time.Second) }
+func (s *GitHubActionsSource) Burst() int            { return 2 }
+func (s *GitHubActionsSource) RespectsRobots() bool  { return false }
+func (s *GitHubActionsSource) Enabled(_ recon.Config) bool { return s.Token != "" }
+
+// ghActionsSearchResponse models the GitHub code search response when looking
+// for workflow files containing provider keywords.
+type ghActionsSearchResponse struct {
+	Items []ghActionsItem `json:"items"`
+}
+
+type ghActionsItem struct {
+	HTMLURL    string              `json:"html_url"`
+	Repository ghActionsRepository `json:"repository"`
+}
+
+type ghActionsRepository struct {
+	FullName string `json:"full_name"`
+}
+
+func (s *GitHubActionsSource) Sweep(ctx context.Context, _ string, out chan<- recon.Finding) error {
+	if s.Token == "" {
+		return nil
+	}
+	base := s.BaseURL
+	if base == "" {
+		base = "https://api.github.com"
+	}
+	if s.client == nil {
+		s.client = NewClient()
+	}
+
+	queries := BuildQueries(s.Registry, "github_actions")
+	kwIndex := ghActionsKeywordIndex(s.Registry)
+
+	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 workflow YAML files referencing the keyword.
+		endpoint := fmt.Sprintf("%s/search/code?q=%s+path:.github/workflows+extension:yml&per_page=20",
+			base, url.QueryEscape(q))
+		req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint, nil)
+		if err != nil {
+			return fmt.Errorf("github_actions: build request: %w", err)
+		}
+		req.Header.Set("Authorization", "Bearer "+s.Token)
+		req.Header.Set("Accept", "application/vnd.github+json")
+
+		resp, err := s.client.Do(ctx, req)
+		if err != nil {
+			if strings.Contains(err.Error(), "unauthorized") {
+				return err
+			}
+			continue
+		}
+
+		var result ghActionsSearchResponse
+		decErr := json.NewDecoder(resp.Body).Decode(&result)
+		_ = resp.Body.Close()
+		if decErr != nil {
+			continue
+		}
+
+		provName := kwIndex[strings.ToLower(q)]
+		for _, item := range result.Items {
+			f := recon.Finding{
+				ProviderName: provName,
+				Confidence:   "low",
+				Source:       item.HTMLURL,
+				SourceType:   "recon:github_actions",
+				DetectedAt:   time.Now(),
+			}
+			select {
+			case out <- f:
+			case <-ctx.Done():
+				return ctx.Err()
+			}
+		}
+	}
+	return nil
+}
+
+func ghActionsKeywordIndex(reg *providers.Registry) map[string]string {
+	m := make(map[string]string)
+	if reg == nil {
+		return m
+	}
+	for _, p := range reg.List() {
+		for _, k := range p.Keywords {
+			kl := strings.ToLower(strings.TrimSpace(k))
+			if kl != "" {
+				if _, exists := m[kl]; !exists {
+					m[kl] = p.Name
+				}
+			}
+		}
+	}
+	return m
+}