Streamline defaults value management

[MakhBeth]

No description provided.

[Copilot]

Pull Request Overview

This PR refactors default value management in OmegaForm by consolidating default value extraction logic and introducing more flexible configuration options.

• Removes the defaultAST.ts file and moves deepMerge function to OmegaFormStuff.ts
• Introduces a new defaultFromSchema configuration option with three modes: "only", "nope", and "merge"
• Replaces the complex extractSchemaDefaults function with a simpler defaultsValueFromSchema implementation

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
packages/vue-components/stories/OmegaForm/Defaults.vue	Adds comprehensive test story demonstrating various default value scenarios and configuration options
packages/vue-components/stories/OmegaForm.stories.ts	Registers the new Defaults story component
packages/vue-components/src/components/OmegaForm/useOmegaForm.ts	Updates default value logic to use new defaultsValueFromSchema function and implements defaultFromSchema configuration option
packages/vue-components/src/components/OmegaForm/defaultAST.ts	Removes entire file containing previous default extraction implementation
packages/vue-components/src/components/OmegaForm/OmegaTaggedUnionInternal.vue	Simplifies tagged union handling by removing complex default value extraction logic for union member switching
packages/vue-components/src/components/OmegaForm/OmegaFormStuff.ts	Adds new deepMerge and defaultsValueFromSchema functions; refactors metadataFromAst (formerly flattenMeta) to return metadata and default values
packages/vue-components/tests/OmegaForm/WithDefaultConstructorPersistency.test.ts	Updates test expectations to match new default value behavior
.changeset/slow-regions-sleep.md	Documents the change as a minor version bump

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[Copilot]

@MakhBeth I've opened a new pull request, #561, to work on those changes. Once the pull request is ready, I'll request review from you.