feeds: Vendor repository indexes

Keep the native APK indexes alongside the expanded package
metadata so image builds do not fetch mutable repository state.

Generate pins atomically and retry transient generation failures.

cache/25.12.5/packages/mips_24kc/routing.nix

@@ -265,7 +265,7 @@
       "luasocket"
     ];
     provides = [ "cjdns-any" ];
-    sha256 = "f1833b18e809bb470f07d1be1740ec410ac452b79af786af54f6c1c6bd2f481b";
+    sha256 = "bd7c576cbc2944d5520598aec74e65bf81c188056d0cc5ddf0a768953bd7e738";
   };
   cjdns-tests = {
     version = "21.1-r6";
@@ -276,7 +276,7 @@
       "librt"
     ];
     provides = [ "cjdns-tests-any" ];
-    sha256 = "187c6915496af672a47a56fcfdb571ecc2024da1fc79fe536035acc55e1fe214";
+    sha256 = "96f4b320e45984b0a76e14f915f1fc6f3ff0b909d9b7a2d3f3a7766b819c8980";
   };
   luci-app-cjdns = {
     version = "1.3-r9";
@@ -288,7 +288,7 @@
       "luci-compat"
     ];
     provides = [ "luci-app-cjdns-any" ];
-    sha256 = "868fe8da66b4d81308549b1dc507af19218a4b75d30cce80557d272e7a357a6c";
+    sha256 = "14b72a613285ee5d4c2cdd5b3af78ad322ec5b9d91d4547b4bfca6bf243fa592";
   };
   mesh11sd = {
     version = "6.2.1-r1";
@@ -305,7 +305,7 @@
       "owipcalc"
     ];
     provides = [ "naywatch-any" ];
-    sha256 = "cecc0e9edc3bd8999f6509f73c73e76f09687eef1ebe1db523f003e05bca14d2";
+    sha256 = "17f9716f95f141f599ab532cd21e1398febfefa9609bb4c3c9c74fd572a8e243";
   };
   ndppd = {
     version = "0.2.6-r1";
@@ -354,7 +354,7 @@
       "libubus20251202"
     ];
     provides = [ "olsrd-any" ];
-    sha256 = "4a50a498b9d6f2dc3a78f4f99dff747e226e223a0799725695d7b54d9ffcddba";
+    sha256 = "644513084620ca397723d2802028a3e6ece867e284eb9345f9151d53860f9c02";
   };
   olsrd-mod-arprefresh = {
     version = "2024.06.09~d72be9ad-r2";