cli: add --config and --toggle options to override api configs/toggles

[sam-shift72]

Lets you override API config and toggle values when running a template render / dev server to help with testing.

kibble render --watch --port 8081 --config foo=123 --config bar=456  --toggle test=true

You can also specify these in kibble.json

{
  "configOverrides": {
    "foo": "bar"
  },
  "toggleOverrides": {
    "test": true
  }
}

Command line args > kibble.json > api

Obviously, this only affects the site template, and any configs/toggles that might get passed through to the frontend JS!

The command line args are only supported on the render command, however the kibble.json settings should affect all places in the code that render the site. If you deployed a site with kibble.json overrides, those overrides would be applied to the built site too!

[sam-shift72]

Re: overrides in kibble.json, I could possibly take out the json serialization tags so that these could only be set via command line.

I had to tap into the Kibble config as it's the way the app passes stuff around, and I figured it might be useful to be able to put local settings into your kibble.json rather than modifying application.jet or whatever directly.

I don't think it's desirable to deploy site templates with these overrides (seeing as we could set them via the APIs) but probably harmless?

[Copilot]

Pull Request Overview

This PR adds support for overriding API configuration values and feature toggles via command-line flags (--config, --toggle) and kibble.json (configOverrides, toggleOverrides), and merges those overrides into both the CLI render command and the API-loading functions.

• Introduce ConfigOverrides and ToggleOverrides in the models.Config struct.
• Initialize override maps in default config loading and in kibble.json.
• Add --config and --toggle flags to the render command and merge overrides in both CLI and API paths.

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
kibble/models/config.go	Added ConfigOverrides and ToggleOverrides fields to the model
kibble/go.mod	Bumped github.com/spf13/pflag to v1.0.6
kibble/config/config.go	Initialized override maps in default LoadConfig
kibble/cmd/render.go	Defined CLI flags, parsed and applied config/toggle overrides
kibble/api/config.go	Merged override maps into API-loaded configs and feature toggles

Comments suppressed due to low confidence (1)

kibble/models/config.go:40

• Add a comment for the ToggleOverrides field (e.g., // allows overriding feature toggles) to match the style used for ConfigOverrides.

	ToggleOverrides map[string]bool   `json:"toggleOverrides"`

[l0ud0gg]

not tested directly but looks good to me. super useful espec for testing new features / site upgrades locally.