Remove unused kube features, fix stale version and hardcoded date

[rawkode]

Three related housekeeping items:

1. Unused kube features (Cargo.toml:16): runtime (watchers/controllers — unused) and derive (no custom CRDs defined) are enabled but never used. Removing them reduces binary size and compile time.
2. Stale version: Cargo.toml:3 says version = "0.1.0" but git tags go up to v0.2.2.
3. Hardcoded date: generate.rs:144 has "2025-01-01T00:00:00Z" as a date-time placeholder — should use the current date dynamically via chrono or std::time.