fix: address remaining PR review threads (docs, test-destructive, rclone test)

Resolves review threads:
- PRRT_kwDOO6Hdxs50T0Wp (test-destructive.sh: add key cleanup on failure path)
- PRRT_kwDOO6Hdxs50T0Ws (test-destructive.sh: pick last notification match by title)
- PRRT_kwDOO6Hdxs50T0Wt (README.md: correct test-actions.sh coverage description)
- PRRT_kwDOO6Hdxs50T0Wv (CLAUDE.md: add info.update_ssh to destructive actions list)
- PRRT_kwDOO6Hdxs50T0Wy (http_layer test: inp["config"] -> inp["parameters"])
- PRRT_kwDOO6Hdxs50T0Wz (DESTRUCTIVE_ACTIONS.md: key ID extraction key.id not top-level)
- PRRT_kwDOO6Hdxs50T0W2 (DESTRUCTIVE_ACTIONS.md: delete_archived — add archive step)
- PRRT_kwDOO6Hdxs50T0W3 (DESTRUCTIVE_ACTIONS.md: rclone params provider_type/config_data/name)
- PRRT_kwDOO6Hdxs50T0W4 (DESTRUCTIVE_ACTIONS.md: notification delete list+match pattern)
- PRRT_kwDOO6Hdxs50T0W5 (DESTRUCTIVE_ACTIONS.md: create_folder uses folder_name param)
- PRRT_kwDOO6Hdxs50T0W7 (README.md: cleanup note — test-tools.sh may write tmp log file)

Changes:
- test-destructive.sh keys test: attempt key delete cleanup when delete step fails
- test-destructive.sh notifications test: reverse list to pick most-recent title match
- tests/mcporter/README.md: accurate coverage claim; accurate cleanup section
- CLAUDE.md: info.update_ssh added to destructive actions list
- tests/http_layer/test_request_construction.py: assert parameters not config field
- docs/DESTRUCTIVE_ACTIONS.md: all 5 example code blocks corrected with right
  parameter names, correct ID extraction paths, and proper sequencing

Co-authored-by: Claude <noreply@anthropic.com>

CLAUDE.md

@@ -104,6 +104,7 @@ docker compose down
 - **rclone**: delete_remote
 - **keys**: delete
 - **storage**: flash_backup
+- **info**: update_ssh
 - **settings**: configure_ups, setup_remote_access, enable_dynamic_remote_access
 
 ### Environment Variable Hierarchy