docs(13-01): complete package registry sources plan

- SUMMARY.md with 4 sources, 16 tests, 8 files
- STATE.md updated with decisions and metrics
- Requirements RECON-PKG-01, RECON-PKG-02 marked complete

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: completed
-stopped_at: Completed 12-04-PLAN.md
-last_updated: "2026-04-06T09:45:38.963Z"
+stopped_at: Completed 13-01-PLAN.md
+last_updated: "2026-04-06T09:54:51.064Z"
 last_activity: 2026-04-06
 progress:
   total_phases: 18
   completed_phases: 12
   total_plans: 69
-  completed_plans: 70
+  completed_plans: 71
   percent: 20
 ---
 
@@ -93,6 +93,7 @@ Progress: [██░░░░░░░░] 20%
 | Phase 11 P01 | 3min | 2 tasks | 11 files |
 | Phase 12 P01 | 3min | 2 tasks | 6 files |
 | Phase 12 P04 | 14min | 2 tasks | 4 files |
+| Phase 13 P01 | 3min | 2 tasks | 8 files |
 
 ## Accumulated Context
 
@@ -135,6 +136,8 @@ Recent decisions affecting current work:
 - [Phase 11]: All five search sources use dork query format to focus on paste/code hosting leak sites
 - [Phase 12]: Shodan/Censys/ZoomEye use bare keyword queries; Censys POST+BasicAuth, Shodan key param, ZoomEye API-KEY header
 - [Phase 12]: RegisterAll extended to 28 sources (18 Phase 10-11 + 10 Phase 12); cloud scanners credentialless, IoT scanners credential-gated
+- [Phase 13]: PyPI uses HTML scraping with extractAnchorHrefs since no public search JSON API
+- [Phase 13]: CratesIO sets custom User-Agent per crates.io API requirements
 
 ### Pending Todos
 
@@ -149,6 +152,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-04-06T09:42:09.000Z
-Stopped at: Completed 12-04-PLAN.md
+Last session: 2026-04-06T09:54:51.060Z
+Stopped at: Completed 13-01-PLAN.md
 Resume file: None