v0.1.4

The web server and the poller now run on Bun (#222, #223). RSSHub, embedded in the poller, stays on Node 24.

Measured on dev2 over 30 minutes: web latency is the same or better, with less CPU (27.5% → 23.8%) and fewer error lines (12 → 1); web memory is higher (881 → 1,266 MiB, stable). The poller uses less memory (351 → 263 MiB) and less CPU, and its crawl throughput and error rate are unchanged, with faster ticks (82 s → 72 s).