docs: finalize Phase 0-1 validation

[brunovicco]

Summary

Finalize the Phase 0-1 validation record for the report-only Evidence-Gated Engineering Loop foundation.

• record the published harness, plugin, and marketplace version 0.6.0;
• record the canonical engineering-loop-schemas v0.1.2 provenance;
• document the Phase 0-1 validation and self-evaluation evidence;
• distinguish contract-addressable hard gates from mandatory integrity checks;
• correct the vendoring description to reflect the deterministic, manifest-backed bundle;
• keep the Evidence-Gated Engineering Loop documentation aligned in English and Portuguese;
• clarify that Phase 0-1 does not provide autonomous candidate creation, promotion, merge, or deployment.

This is a documentation-only change and does not alter runtime, template, plugin, security hook, or quality-gate behavior.

Change type

• Bug fix
• Feature
• Documentation
• Security or privacy hardening
• Refactoring or maintenance
• Breaking change

Validation

Validated locally with the repository environment and generated Python 3.13 profiles.

python -m unittest discover -s tests -v

python -m compileall -q \
  bootstrap.py \
  template/.claude/hooks \
  template/scripts \
  plugin/python-engineering-harness/scripts \
  scripts

uvx --from ruff==0.15.20 ruff check --isolated \
  bootstrap.py \
  tests \
  template/.claude/hooks \
  template/scripts \
  plugin/python-engineering-harness/scripts \
  scripts

node --check template/.claude/workflows/review-branch.js

python scripts/loop_self_evaluation.py \
  --output-dir build/loop-self-evaluation

git diff --check