feat(bindings): add component data-binding contracts

[artiphishle]

Summary

Implements #48.

Replaces the old node-local prop binding model with app-level component data-binding contracts.

Adds/reworks:

• ComponentInstanceId
• ComponentTypeId
• BindingOperationRef
• BindingValueSource
• BindingValueExpression
• BindingFallback
• BindingLifecycleBehavior
• PropBinding
• BindingInputValue
• BindingInputMap
• BindingCondition
• EventBindingTarget
• EventBinding
• ComponentDataBinding
• ComponentDataBindingRegistry
• AppManifest.dataSources
• AppManifest.dataBindings

Removes from the public model:

• NodePropBinding
• DbCollectionQueryBinding
• special source: 'db.collection' binding source
• node-local UiNode.bindings
• node-local UiNode.events
• old action-binding contract layer from types.ts

Scope intentionally excluded

• no Runtime resolver implementation
• no Studio UI migration
• no ZORA metadata migration
• no @ankhorage/data-sources implementation

Those are follow-up repo-local tasks.

Verification

I could not run local validation from this session because the environment cannot reliably clone/resolve GitHub repositories.

Please run before merge:

bun install
bun run build
bun run lint:fix
bun run test

Notes

DB-backed reads are now represented through data-source operation references instead of the old direct db.collection binding source. Runtime lifecycle/cache state remains outside the serializable binding contracts.