Add atomic Todo capability renderers

[kattsushi]

Requested outcome

Replace Todo pseudo-block ownership with six independent atomic generators while preserving exclusive Unit3 surface ownership.

Expected behavior

• Model, event, port, use-case, integration-adapter, and presentation generators each own real implementation bytes.
• Finite capability edges match every generated import.
• Unit3 remains the sole owner of workspace roots, manifests, and barrels.
• Non-default reordered package roots produce valid imports.
• Generated TypeScript passes real semantic tsc --noEmit module resolution.
• Missing mappings and invalid selections fail closed.

Acceptance evidence

• Contracts 67/67 and generation 26/26 pass.
• Generation typecheck, format, and diff checks pass.
• Semantic generated-workspace compile and negative Data/Context/Effect import variants pass.
• Total work unit is exactly 400 changed lines.

Scope

This is Delivery Unit 4 of #131. Frozen v1 parity/default compatibility/owner migration, public E2E, and the PR #130 eligibility gate remain later units.

[kattsushi]

Closing as not planned because Effectify App Builder has been retired in favor of contributing to lloydrichards/stack-effect. No App Builder implementation is retained on dev.