feat: Add adaptive post spacing to prevent feed floodingPost interval

[rmdes]

Problem

When the queue has multiple posts (e.g., 10 items), they all publish within seconds, flooding followers' feeds.

Solution

Adds adaptive spacing that dynamically calculates delays between posts based on queue size.

New Configuration Options

Option	Type	Default	Description
adaptiveSpacing	boolean	false	Enable/disable adaptive spacing
spacingWindow	number	600	Target time window (seconds) to spread the queue over
minSpacing	number	1	Minimum delay between posts (seconds)
maxSpacing	number	60	Maximum delay between posts (seconds)

How It Works

The delay between posts is calculated as: spacingWindow / queueSize, clamped between minSpacing and maxSpacing.

Example with defaults (spacingWindow: 600, minSpacing: 1, maxSpacing: 60):

Queue Size	Calculated Delay	Clamped Result
5 posts	120s	60s (capped at max)
10 posts	60s	60s
20 posts	30s	30s
100 posts	6s	6s
1000 posts	0.6s	1s (raised to min)

This means:

• A 10-post queue with spacingWindow: 600 takes ~10 minutes to fully publish
• A 100-post queue with the same settings also takes ~10 minutes (posts are closer together)

The minSpacing and maxSpacing bounds prevent edge cases: extremely long waits for small queues, or spam-like bursts for huge queues.

[rmdes]

@milanmdev Alright, I think this is now better and clear, let me know what you think, i'm already testing this since several months and it works really well