feat: replace borgbackup and bespoke backup function with borgmatic

secrets/borgbackup-server-offsite.age

@@ -1,9 +0,0 @@
-age-encryption.org/v1
--> ssh-ed25519 LtK9yQ ffY9sDLotAZPq7WYBhBCo/+CG8hs8oSb+Zc26XQ5Kxs
-7JwKBUAUWfuOyfaf/pVcq1zv58OtrPAh9wGqPcEhlt8
--> ssh-ed25519 qLT+DQ ulTuZ469zjWcwcuH54SUDaAsaNcpEqXkO0cdGsv2tEE
-jwqDMwd/hyHvT+FQjHj8fziycK9WMGJqM6UZKB1yXrQ
--> ssh-ed25519 7+xRyQ ZcybG8n14hpc/B9p1KWDzCi9T2UmVzzsTG32LtKtNFY
-81CixZ1eUgAZLS1LDceYeoGbKUPVqqzqjjJ7ACUHCCc
---- 5eJlsZeXReu93xYN6WLtKfFycFyTZyrt0aMYgERe9ME
-ÝÇ"ôŒº4<14>XêtºQqwáýÁ‹˜Æ(„¾Þ¸­ƒ±‚…ò‹èÊ3’.JI¼‹ä6-)ö§áì,˜ó<>ªÕ²ÚqÁI~b®

secrets/borgbackup-server-onsite.age

@@ -1,9 +0,0 @@
-age-encryption.org/v1
--> ssh-ed25519 LtK9yQ klX5fjSXRPWV/ALNcTZ8UIVFEftuS0bMx0oZ0jZDSBQ
-swtF1Mvup7JZszfPgXwZ2363Qrt3oUdP1AWfd0Je8h0
--> ssh-ed25519 qLT+DQ IN4GfoKDEtcs/lbobggKfdbFn8EdqpBv7KRJqs0nxg8
-X+hti2ZVCqZPHV54QzwZN1nQTdBbU/ZaF7iz1QspIW4
--> ssh-ed25519 7+xRyQ TFU9KepaxamXUcwNrwDv368JvfmLb0Aq1oeuQoX3A2g
-XQZxEmfduYOcDoXZuL9ywH2UdJmFsM6mQDqX5SBkvko
---- ud8jMRGHEN6/q5o0GhZdt+Nh38Bhg6nh/ugTPTJFYtI
-ÝuI,ÈÏÖþmîWïJÁz
ÙP/†.]‡ÇmÝøã¶<C3A3>­káb¸há‹+úˆ‚—éîýéJXZ/¡qåX	×Qa.¨¢/­ˆ²¿9Á

secrets/borgmatic-pg.age

@@ -0,0 +1,9 @@
+age-encryption.org/v1
+-> ssh-ed25519 qLT+DQ C3A3TKOyIWzbW8JupvhTmLKetnr+0uzkPq985NA0DCs
+ahrHVR7WadjOfOXBWOqBAf9L0UdCNeD0Ynk6sKDF7WM
+-> ssh-ed25519 7+xRyQ evZ6zSS3olbORnqiCnEAL68D1FNPgg2oBoJSaquLAAA
+BYoo9AVOHsRsTbXkRQdS/7WN25vBuJOAb0YfnSY+hGQ
+-> ssh-ed25519 LtK9yQ jLIdKPvVhPsRIJevWLmads3P2hM29c0B143OWoINzlY
+ziCUQ1TtB6BUgbNZ/zFXoaOtpxyrbKobsTvXo/dSpSA
+--- Q6JHS+5vuYLIqyIb6x3qCbIJvsjk2++ovL1zkVGs69o
+<EFBFBD>ã쇽NM1±WBýy•M.ù²ø-Ø|GlºÈ]¡8Z,(5è±²P¶èè!ÿpmp¡¢°Eaû¤;<3B>Ôâ¿Ä(tq!ÊKÕU4×m

secrets/borgmatic.age

@@ -0,0 +1,9 @@
+age-encryption.org/v1
+-> ssh-ed25519 qLT+DQ zfLZc8A30KjoMrhUSl4OgTp+Yg11fmVjDioxtIYMqDU
+URhJwUCElaJcSd+k5wBQAXvdC/68ZcCA5WbHGAJTYfY
+-> ssh-ed25519 7+xRyQ mrGrjW0fQIRNMDdw4Hoc9N/xAEm1P0IFukShfeVdKE8
+yLUmj7LBfHQ/i4buBB57ktNUOnHpoC8NYTQUnK5e5y4
+-> ssh-ed25519 LtK9yQ THjOsSIr/DQTulFlwd4r5DYb73VQ0vWgyDHkfJV3NR0
+Dl8FwK1WciiEMs5MdrFcUIOFGmlbZf3APOWzLN6rkOE
+--- 3mjYPT9APy0F5NNbbCIQhzZ0XjKBtB9YGGS3t37eoRU
+ôT^væ—U‹§òÏ{™>[÷õ¦dhé§PC6þZ|é£ûýK|~lÝ<6C>bŒÀD¢ûÖÙt”΄¨ø]¨’1P$ø10¨¿ïAý±$

secrets/secrets.nix

@@ -15,8 +15,8 @@ let
 in
 {
   # keep-sorted start
-  "borgbackup-server-offsite.age".publicKeys = users;
-  "borgbackup-server-onsite.age".publicKeys = users;
+  "borgmatic.age".publicKeys = users;
+  "borgmatic-pg.age".publicKeys = users;
   "copyparty-will.age".publicKeys = users;
   "immich.age".publicKeys = users;
   "jellyfin.age".publicKeys = users;