Review only. Do not edit files.

Repo: /root/.openclaw/workspace/openclaw-mem
Feature: temporal fact materialized view v1.9.26.

User requirement:
- Implement Phase 0 through Phase 6 from docs/specs/temporal-fact-materialized-view-dev-phases-v0.md.
- Preserve Store / Pack / Observe ownership.
- Add ops skill and public docs hygiene.
- Extraction assist must be review-only.
- No Gateway, cron, memory backend, prompt injection, or runtime topology change.

Review scope:
- openclaw_mem/graph/facts.py
- openclaw_mem/cli.py graph fact parser + command
- tests/test_graph_facts.py and tests/data/temporal_fact_view/*
- docs/temporal-facts.md
- skills/temporal-facts.ops.md
- README.md, mkdocs.yml, CHANGELOG.md, version files, roadmap/architecture/spec status docs

Please produce a phase-matrix review for P0-P6:
- verdict per phase: pass / must-fix / should-fix
- must-fix issues with file:line references if any
- truth-owner/source-link risks
- CLI contract risks
- Pack/trace/citation risks
- extraction review-only risks
- missing tests or counterfactuals
- release/tag readiness verdict

Known verifier receipts from parent agent:
- uv run pytest tests/test_graph_facts.py => 6 passed
- uv run pytest tests/test_graph_facts.py tests/test_graph_query_cli.py tests/test_context_pack_golden.py tests/test_graph_match_cli.py => 27 passed
- uv run python -m py_compile openclaw_mem/graph/facts.py openclaw_mem/cli.py tests/test_graph_facts.py => passed
- git diff --check => passed
- uv run --extra docs mkdocs build --strict => passed
- uv run openclaw-mem status --json reports version 1.9.26
- uv run openclaw-mem graph fact registry emits predicate registry

Use git diff and local files as needed. Output concise findings first.
