Clarify API docs for triage endpoint and S3 configuration

[creslinux]

Two small documentation clarifications:

1. API.md - The triage endpoint documentation says "Moves a card from triage into a column" which implies it only works for cards in triage. The implementation works for cards in any state, so updated to clarify.

2. docker-deployment.md / kamal-deployment.md - Added CSP_CONNECT_SRC to the S3 configuration section. Without this, browser Content Security Policy blocks direct uploads to S3.

[jorgemanrubia]

I think we can just remove the extra sentence — "Moves a card into a column." feels sufficient on its own.

[jorgemanrubia]

Thanks for the contribution! Good catches on both the triage endpoint description and the CSP docs.

[Copilot]

Pull request overview

Documentation-only PR that clarifies the behavior of the card triage API endpoint and documents an additional CSP environment variable needed for S3 direct uploads in container-based deployments.

Changes:

• Update API docs to describe the triage endpoint as moving a card into a column (not only from triage).
• Add CSP_CONNECT_SRC to the documented S3-related environment variables for Docker and Kamal deployments.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
docs/kamal-deployment.md	Documents CSP_CONNECT_SRC alongside S3 env vars for Kamal deployments.
docs/docker-deployment.md	Documents CSP_CONNECT_SRC alongside S3 env vars for Docker deployments.
docs/API.md	Clarifies the POST .../triage endpoint description to match actual behavior.

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