[static-image] rotation_mode "date_based" is a stub that always shows the first image

[ChuckBuilds]

Plugin

• Plugin id: static-image
• Plugin version: 1.0.5

Describe the bug

image_config.rotation_mode offers four values in the schema, and one of them does nothing. date_based is a placeholder that returns the first available image every time:

elif self.rotation_mode == 'date_based':
    # Future implementation
    return available_images[0]

The option is presented in the web UI alongside the three that work, so selecting it looks like a broken rotation rather than an unimplemented feature. There is no log line either — the display simply never advances.

Steps to reproduce

1. Configure two or more images with image_config.mode: "multiple".
2. Set image_config.rotation_mode: "date_based".
3. The first image shows indefinitely.

Related: time_based needs a second switch

Not a bug, but the same class of confusion and worth considering together. rotation_mode: "time_based" does nothing on its own — rotation_settings.time_intervals.enabled must also be true, or the image never advances. Two settings that have to agree, with no feedback when they do not.

Suggested fix

Either implement date-based selection (day-of-year indexing, the way of-the-day picks its entry, would fit), or drop date_based from the schema enum until it exists. Removing it cannot break a working configuration, since no configuration using it works today.

For time_based, the switch could be implied by the mode rather than requiring both.

Documented as a known limitation in #367 in the meantime.