Archive El Segundo and Sierra Madre feeds (service discontinued)

Both feeds pointed at static_current URLs in LA Metro's regional GTFS
repository that now return 404. In both cases the underlying service has
ended rather than moved, per LA Metro's README removal table.

Follows the convention in trilliumtransit.com.dmfr.json: static_current
moved into static_historic, tags.status set to archived.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: ChelseaKR

feeds/lacmta.github.com.dmfr.json

@@ -24,11 +24,14 @@
       "id": "f-elsegundo~ca~us",
       "spec": "gtfs",
       "urls": {
-        "static_current": "https://github.com/LACMTA/los-angeles-regional-gtfs/raw/main/elsegundo-ca-us/elsegundo-ca-us.zip",
         "static_historic": [
-          "https://data.trilliumtransit.com/gtfs/elsegundo-ca-us/elsegundo-ca-us.zip"
+          "https://data.trilliumtransit.com/gtfs/elsegundo-ca-us/elsegundo-ca-us.zip",
+          "https://github.com/LACMTA/los-angeles-regional-gtfs/raw/main/elsegundo-ca-us/elsegundo-ca-us.zip"
         ]
       },
+      "tags": {
+        "status": "archived"
+      },
       "operators": [
         {
           "onestop_id": "o-elsegundo~ca~us",
@@ -78,11 +81,14 @@
       "id": "f-sierramadre~ca~us",
       "spec": "gtfs",
       "urls": {
-        "static_current": "https://raw.githubusercontent.com/LACMTA/los-angeles-regional-gtfs/main/sierramadre-ca-us/sierramadre-ca-us.zip",
         "static_historic": [
-          "https://data.trilliumtransit.com/gtfs/sierramadre-ca-us/sierramadre-ca-us.zip"
+          "https://data.trilliumtransit.com/gtfs/sierramadre-ca-us/sierramadre-ca-us.zip",
+          "https://raw.githubusercontent.com/LACMTA/los-angeles-regional-gtfs/main/sierramadre-ca-us/sierramadre-ca-us.zip"
         ]
       },
+      "tags": {
+        "status": "archived"
+      },
       "operators": [
         {
           "onestop_id": "o-sierramadre~ca~us",