Improve GitHub Action

[qoomon]

• add more options
• set decent defaults (username, token)

[Copilot]

Pull request overview

This PR expands the local render_svg.ts generator and the bundled composite GitHub Action to support additional options (title filtering, column count, frame/background toggles) and attempts to introduce more convenient defaults for action inputs.

Changes:

• Extended render_svg.ts CLI argument handling (title list, column, no-frame, no-bg) and aligned rendering defaults with shared CONSTANTS.
• Added new composite action inputs (title, column, no_frame, no_bg) and updated the run command to pass them through.
• Updated README usage examples for both local generation and workflow usage.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
render_svg.ts	Adds CLI args for title/column/frame/background and uses shared defaults.
action.yml	Adds new inputs and tries to set default username/token plus passes new args to the script.
README.md	Updates CLI usage and action usage snippet to reflect the new inputs.

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[schembriaiden]

This PR borrows a lot from this: #414

[qoomon]

@schembriaiden oh thats true I was not aware of that PR