fix(cli): honor editor_files opt-outs during init and update

[z2Ace0107]

Summary

Fix editor_files.<project_file_id>: false being ignored during editor project-file setup.

• Resolve persisted opt-outs once in the setup layer using registered agent target descriptors.
• Honor vscode_mcp: false during both init and update.
• Keep explicit per-run project-file overrides stronger than persisted opt-outs.
• Keep Codex MCP and hooks registration independent from the agents_md opt-out.

The separate project-file purge behavior mentioned in the issue remains out of scope.

Validation

• uv run pytest tests/unit/cli/test_editor_setup.py tests/unit/cli/test_vscode_setup.py tests/unit/cli/test_agent_target_baseline.py -q (78 passed)
• uv run ruff check packages/cli/src/repowise/cli/editor_setup.py packages/cli/src/repowise/cli/editor_integrations/codex.py tests/unit/cli/test_editor_setup.py (passed)
• uv run ruff format --check packages/cli/src/repowise/cli/editor_setup.py packages/cli/src/repowise/cli/editor_integrations/codex.py tests/unit/cli/test_editor_setup.py (passed)
• uv run mypy packages/cli/src/repowise/cli/editor_setup.py packages/cli/src/repowise/cli/editor_integrations/codex.py (passed)
• npm run lint (passed; existing warning in an untouched UI file)
• npm run type-check (passed)

Fixes #2137

[RaghavChamadiya]

Thanks @z2Ace0107. Resolving explicit editor-file opt-outs into disabled_project_files preserves default behavior and explicit overrides while keeping the Codex MCP and hook toggles separate from AGENTS.md generation. The regression tests cover those contracts. Approved.