fix: separate docs pointer from sync pointer to fix update --docs drift

[jyotirmya17]

Fixes #847.

What changed: Splits last_sync_commit and last_docs_commit to resolve pointer drift when running the update command with --index only.

How to test/verify:

Run an update with --index only.
Verify that last_sync_commit stays the same while last_docs_commit advances.
Unit tests have been added/updated in test_issue_847_fix.py to cover this behavior.

[repowise-bot]

✅ Health: 7.6 (unchanged)

📋 At a glance
2 hotspots touched · 4 new findings introduced · 5 co-change pairs left out · 2 files with recent fix history. Scoped to packages.

⚠️ Change risk: moderate _{(riskier than 43% of this repo's commits · raw 8.6/10)}
This change's risk is driven by:

• more lines added than baseline

🩹 Review priority _{(files here with the most recent bug-fix history — defects cluster, so review these first)}

• .../update_cmd/persistence.py — fixed 6× in the last ~6 months
• .../update_cmd/command.py — fixed 5× in the last ~6 months

🔎 More signals (2)

🔥 Hotspots touched (2)

• .../update_cmd/command.py — 18 commits/90d, 3 dependents · primary owner: Raghav Chamadiya (91%)
• .../update_cmd/persistence.py — 11 commits/90d, 3 dependents · primary owner: Raghav Chamadiya (100%)

🔗 Hidden coupling (2 files)

• .../update_cmd/command.py co-changes with these files (not in this PR):
  • docs/CLI_REFERENCE.md (6× — 🟢 routine)
  • .../workspace/update.py (4× — 🟢 routine)
  • .../cli/helpers.py (4× — 🟢 routine)
• .../update_cmd/persistence.py co-changes with these files (not in this PR):
  • .../pipeline/persist.py (5× — 🟢 routine)
  • .../pipeline/incremental.py (4× — 🟢 routine)

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📊 Full report · ⭐ Star Repowise · 📥 Install bot · Last updated 2026-07-15 14:43 UTC
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[jyotirmya17]

I've also spun off the 3 related items discussed in #847 into their own issues here: #850, #851, and #852!