feat(app-builder): add post-generation evolution

[kattsushi]

Closes #119

Tracker: #92

Summary

• Add deterministic, dependency-closed atomic Todo generation blocks for model, port, event, use case, integration adapter, and bounded CLI presentation.
• Compose the initial Todo preset and post-generation evolution from the same owned block manifests and provenance.
• Prove real Nx Devkit Tree evolution, zero-diff reapplication, and pre-write ownership conflict behavior.

Chain Context

• Strategy: feature-branch-chain
• Start: feat/app-builder-golden-todo-behavior at e0a657c01d37cdcc79f1ee5d01be32fe5ce8a974
• End: 65b8899cec6472fce29955aa9eeaf5ecd00d522a
• Scope: PR 04 only; protocol, replay, E2E, showcase, Effect AI, MCP, marketplace, and unrelated refactors remain out of scope.

#92 tracker
  └─ PR 01 catalog plan
      └─ PR 02 topology
          └─ PR 03 Todo behavior
              └─ 📍 PR 04 post-generation evolution
                  └─ PR 05 closed CLI protocol

Verification

• pnpm nx test @effectify/app-builder-generation — 3 files / 13 tests passed.
• pnpm nx typecheck @effectify/app-builder-generation
• pnpm nx lint @effectify/app-builder-generation
• pnpm nx build @effectify/app-builder-generation
• Exact-parent affected lint/typecheck/test/build checks passed.
• pnpm nx run @effectify/repo:format:check

Rollback

Revert only the atomic generator registry, evolution planner/tests, shared preset composition, and PR 04 task marks; prior planning, topology, and Todo behavior remain intact.

Checklist

• Linked approved issue
• One type label will be applied
• Conventional commit
• No AI attribution

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[kattsushi]

Closing this PR because we are deprecating the Effectify App Builder initiative in favor of contributing to stack-effect, which already implements the broader Effect-first scaffolding platform we intended to build.

This work was not merged into dev. We will keep the branch temporarily while we inventory narrowly reusable ideas, such as deterministic planning and replay, structured diagnostics, atomic writes, locking, recovery, and negative-path tests, before proposing any upstream contributions.