fix(ci): Downgrade setup-uv action from v6 to v5

The setup-uv@v6 action has deprecated Node 18 support mid-version by
using the File API, causing workflow failures. Temporarily downgrading
to v5 until we migrate to a better runner image with Node 20+ support.

.envrc

@@ -2,6 +2,8 @@
 
 dotenv_if_exists
 
-# use flake ".#${DIRENV_DEVSHELL:-default}"
+if [ -f /etc/os-release ] && grep -q '^ID=nixos' /etc/os-release; then
+    use flake ".#${DIRENV_DEVSHELL:-default}"
+fi
 
 PATH_add bin

.forgejo/workflows/prek-checks.yml

@@ -18,7 +18,7 @@ jobs:
           persist-credentials: false
 
       - name: Install uv
-        uses: https://github.com/astral-sh/setup-uv@v6
+        uses: https://github.com/astral-sh/setup-uv@v5
         with:
           enable-cache: true
           ignore-nothing-to-cache: true

flake.lock

@@ -516,16 +516,16 @@
     "rocksdb": {
       "flake": false,
       "locked": {
-        "lastModified": 1741308171,
-        "narHash": "sha256-YdBvdQ75UJg5ffwNjxizpviCVwVDJnBkM8ZtGIduMgY=",
-        "ref": "v9.11.1",
-        "rev": "3ce04794bcfbbb0d2e6f81ae35fc4acf688b6986",
-        "revCount": 13177,
+        "lastModified": 1753385396,
+        "narHash": "sha256-/Hvy1yTH/0D5aa7bc+/uqFugCQq4InTdwlRw88vA5IY=",
+        "ref": "10.4.fb",
+        "rev": "28d4b7276c16ed3e28af1bd96162d6442ce25923",
+        "revCount": 13318,
         "type": "git",
         "url": "https://forgejo.ellis.link/continuwuation/rocksdb"
       },
       "original": {
-        "ref": "v9.11.1",
+        "ref": "10.4.fb",
         "type": "git",
         "url": "https://forgejo.ellis.link/continuwuation/rocksdb"
       }

flake.nix

@@ -17,7 +17,7 @@
     nix-filter.url = "github:numtide/nix-filter?ref=main";
     nixpkgs.url = "github:NixOS/nixpkgs?ref=nixpkgs-unstable";
     rocksdb = {
-      url = "git+https://forgejo.ellis.link/continuwuation/rocksdb?ref=v9.11.1";
+      url = "git+https://forgejo.ellis.link/continuwuation/rocksdb?ref=10.4.fb";
       flake = false;
     };
   };
@@ -62,7 +62,7 @@
               }).overrideAttrs
                 (old: {
                   src = inputs.rocksdb;
-                  version = "v9.11.1";
+                  version = "v10.4.fb";
                   cmakeFlags =
                     pkgs.lib.subtractLists [
                       # No real reason to have snappy or zlib, no one uses this