Codifies the bar every fetch must hit:
- one plain English .srt per episode, named <base>.eng.srt
- drop SDH / HearingImpaired / MachineTranslated / AiTranslated / Forced
- prefer fps-matched, then highest download count
- UI label collapsed to just "English" via web-overrides shim
README.md now points at STYLE.md as a hard prereq before any fetch run.
The picker logic in v1/v2/v3 helpers already encodes these rules; STYLE.md
is the canonical source of truth that they should be checked against if
anyone (or future-me) is tempted to relax them.
