add tag colors to seed data and reverse tag order in project cards

- Add color parameter to seed tags (Rust red, Python blue, etc.)
- Reverse tag display order in ProjectCard (flex-row-reverse)
- Enable release binary stripping in Cargo.toml
- Increase Railway health check timeout to 120s
- Remove backup favicon/icon files

Cargo.toml

@@ -37,3 +37,6 @@ tracing-subscriber = { version = "0.3.22", features = ["env-filter", "json"] }
 ulid = { version = "1", features = ["serde"] }
 urlencoding = "2.1"
 uuid = { version = "1", features = ["serde", "v4"] }
+
+[profile.release]
+strip = true