feat(jupiter): add newsreader profile (RSSHub + Miniflux)

X killed guest API access and now prices reads at $0.005 each with no free
tier, so the only workable personal news reader is a scraping bridge fed by a
burner account's session cookie.

RSSHub turns X accounts, lists and keyword searches into RSS on loopback;
Miniflux is the reader, exposed on the LAN and registered with homepage.
Both secrets live outside the Nix store as root-owned EnvironmentFiles.

Note: the packaged RSSHub reads TWITTER_AUTH_TOKEN — the username/password
login that upstream docs still describe is commented out in that build.

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

machines/jupiter/environments.nix

@@ -22,6 +22,7 @@ in
     jellyfin.enable = true;
     jellyseerr.enable = true;
     immich.enable = true;
+    newsreader.enable = true;
     development.enable = true;
     home-assistant.enable = true;
 

modules/environments/default.nix

@@ -20,5 +20,6 @@
     ./jellyfin
     ./jellyseerr
     ./immich
+    ./newsreader
   ];
 }

modules/environments/newsreader/default.nix

@@ -0,0 +1,102 @@
+# X (Twitter) news reader: RSSHub feed bridge + Miniflux reader
+{
+  config,
+  lib,
+  ...
+}:
+let
+  cfg = config.my.profiles.newsreader;
+  hostName = config.networking.hostName;
+
+  # RSSHub only ever talks to Miniflux on the same host, so it stays on
+  # loopback and out of the firewall.
+  rsshubPort = 1200;
+in
+{
+  options.my.profiles.newsreader = with lib; {
+    enable = mkEnableOption "RSSHub + Miniflux news reader";
+
+    port = mkOption {
+      type = types.port;
+      default = 8085; # 8080 is taken by aria on jupiter
+      description = "Port Miniflux listens on.";
+    };
+
+    rsshubSecretFile = mkOption {
+      type = types.path;
+      default = "/var/lib/secrets/rsshub.env";
+      description = ''
+        EnvironmentFile holding RSSHub's X session, in the form
+
+        ```
+        TWITTER_AUTH_TOKEN=<auth_token cookie>,<optional second cookie>
+        ```
+
+        X removed guest access, so the bridge needs a logged-in session: copy
+        the `auth_token` cookie from a burner account and close the tab without
+        logging out, since logging out invalidates it. Listing several cookies
+        gives RSSHub rotation headroom when one gets suspended.
+
+        Create this file by hand, root-owned and chmod 600 — it must not end up
+        in the Nix store.
+      '';
+    };
+
+    minifluxSecretFile = mkOption {
+      type = types.path;
+      default = "/var/lib/secrets/miniflux.env";
+      description = ''
+        EnvironmentFile holding the Miniflux admin account:
+
+        ```
+        ADMIN_USERNAME=finn
+        ADMIN_PASSWORD=<at least 6 characters>
+        ```
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    # Turns X accounts, lists and keyword searches into RSS. Feed URLs look
+    # like http://127.0.0.1:1200/twitter/user/<handle>, /twitter/list/<id> or
+    # /twitter/keyword/<query>.
+    services.rsshub = {
+      enable = true;
+      redis.enable = true;
+      secretFiles = [ cfg.rsshubSecretFile ];
+      settings = {
+        PORT = rsshubPort;
+        LISTEN_INADDR_ANY = false;
+        # X throttles aggressively and answers with an empty 200 rather than an
+        # error, so cache for an hour and keep retries low.
+        CACHE_EXPIRE = "3600";
+        REQUEST_RETRY = "3";
+      };
+    };
+
+    services.miniflux = {
+      enable = true;
+      adminCredentialsFile = cfg.minifluxSecretFile;
+      config = {
+        LISTEN_ADDR = "0.0.0.0:${toString cfg.port}";
+        BASE_URL = "http://${hostName}:${toString cfg.port}/";
+        CREATE_ADMIN = 1;
+        # Minutes. Matched to RSSHub's cache; polling harder just burns the
+        # X session for nothing.
+        POLLING_FREQUENCY = 60;
+      };
+    };
+
+    networking.firewall.allowedTCPPorts = [ cfg.port ];
+
+    my.homepage.services = [
+      {
+        group = "Services";
+        name = "Miniflux";
+        description = "RSS reader";
+        href = "http://${hostName}:${toString cfg.port}";
+        icon = "miniflux.png";
+      }
+    ];
+  };
+}