The /ytdlp command only accepted URLs with hardcoded parameters (format sorting, mp4 recoding, filename restrictions), preventing users from customizing downloads via yt-dlp flags.

Changes

Command parsing

• Parse flags (prefixed with -/--) separately from URLs
• Detect URLs by :// presence to avoid consuming them as flag values
• Pass both flags and URLs to task execution

Task execution

• Accept custom flags array in ytdlp.Task
• Pass flags to yt-dlp before URLs: [FLAGS...] [URLS...]
• Apply default behavior (format sorting, recoding) only when no flags provided
• Always preserve output path for temp directory safety

Data flow

• Added YtdlpFlags []string to tcbdata.Add and ytdlp.Task
• Updated handler chain: handleYtdlpCmd → CreateAndAddYtdlpTaskWithEdit → NewTask

i18n

• Updated usage messages with flag examples (EN/CN)

Usage

# Backward compatible
/ytdlp https://example.com/video

# With custom flags
/ytdlp --format best https://example.com/video
/ytdlp --extract-audio --audio-format mp3 https://example.com/video

# Multiple URLs
/ytdlp --format best https://example.com/v1 https://example.com/v2

Flags and URLs can be mixed in any order. The parser correctly differentiates between flag values and URLs.

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