Add LEGO channel and stock-recommendation feeds to Finance

LEGO channel (🧱, red theme) posts to Matrix with Brickset + The Brick Fan
feeds. Finance gains MarketBeat (analyst ratings/upgrades) and Seeking Alpha
(tier 2; expect paywall stamps).

config.example.toml

@@ -11,6 +11,7 @@ admin_room = "!adminroomid:matrix.example.org"
 tech = "!techroomid:matrix.example.org"
 politics = "!politicsroomid:matrix.example.org"
 gaming = "!gamingroomid:matrix.example.org"
+lego = "!legoroomid:matrix.example.org"
 
 [posting]
 min_interval_seconds = 300
@@ -173,3 +174,35 @@ tier = 1
 poll_interval_minutes = 60
 direct_route = "finance"
 enabled = true
+
+[[sources]]
+name = "MarketBeat"
+feed_url = "https://www.marketbeat.com/feed/"
+tier = 1
+poll_interval_minutes = 60
+direct_route = "finance"
+enabled = true
+
+[[sources]]
+name = "Seeking Alpha"
+feed_url = "https://seekingalpha.com/feed.xml"
+tier = 2
+poll_interval_minutes = 60
+direct_route = "finance"
+enabled = true
+
+[[sources]]
+name = "Brickset"
+feed_url = "https://brickset.com/feed"
+tier = 1
+poll_interval_minutes = 60
+direct_route = "lego"
+enabled = true
+
+[[sources]]
+name = "The Brick Fan"
+feed_url = "https://www.thebrickfan.com/feed/"
+tier = 1
+poll_interval_minutes = 60
+direct_route = "lego"
+enabled = true