feat(09-05): add recon full/list commands and remove stub

- cmd/recon.go owns reconCmd with full and list subcommands
- Wires pkg/recon.Engine.SweepAll + Dedup with ExampleSource registered
- Adds --stealth, --respect-robots (default true), --query flags
- Removes reconCmd stub from cmd/stubs.go

cmd/recon.go

@@ -0,0 +1,74 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/salvacybersec/keyhunter/pkg/recon"
+	"github.com/spf13/cobra"
+)
+
+var (
+	reconStealth       bool
+	reconRespectRobots bool
+	reconQuery         string
+)
+
+var reconCmd = &cobra.Command{
+	Use:   "recon",
+	Short: "Run OSINT recon across internet sources",
+	Long:  "Run OSINT recon sweeps across registered sources. Phase 9 ships with an ExampleSource stub; real sources land in Phases 10-16.",
+}
+
+var reconFullCmd = &cobra.Command{
+	Use:   "full",
+	Short: "Sweep all enabled sources in parallel and deduplicate findings",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		eng := buildReconEngine()
+		cfg := recon.Config{
+			Stealth:       reconStealth,
+			RespectRobots: reconRespectRobots,
+			Query:         reconQuery,
+		}
+		ctx := context.Background()
+		all, err := eng.SweepAll(ctx, cfg)
+		if err != nil {
+			return fmt.Errorf("recon sweep: %w", err)
+		}
+		deduped := recon.Dedup(all)
+		fmt.Printf("recon: swept %d sources, %d findings (%d after dedup)\n", len(eng.List()), len(all), len(deduped))
+		for _, f := range deduped {
+			fmt.Printf("  [%s] %s  %s  %s\n", f.SourceType, f.ProviderName, f.KeyMasked, f.Source)
+		}
+		return nil
+	},
+}
+
+var reconListCmd = &cobra.Command{
+	Use:   "list",
+	Short: "List registered recon sources",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		eng := buildReconEngine()
+		for _, name := range eng.List() {
+			fmt.Println(name)
+		}
+		return nil
+	},
+}
+
+// buildReconEngine constructs the recon Engine with all sources registered.
+// Phase 9 ships ExampleSource only; Phases 10-16 will add real sources here
+// (or via a registration side-effect in their packages).
+func buildReconEngine() *recon.Engine {
+	e := recon.NewEngine()
+	e.Register(recon.ExampleSource{})
+	return e
+}
+
+func init() {
+	reconFullCmd.Flags().BoolVar(&reconStealth, "stealth", false, "enable UA rotation and jitter delays")
+	reconFullCmd.Flags().BoolVar(&reconRespectRobots, "respect-robots", true, "respect robots.txt for web-scraping sources")
+	reconFullCmd.Flags().StringVar(&reconQuery, "query", "", "override query sent to each source")
+	reconCmd.AddCommand(reconFullCmd)
+	reconCmd.AddCommand(reconListCmd)
+}