chore(release): prepare @hasna/conversations 0.5.44

[andrei-hasna]

Summary

• bump @hasna/conversations from 0.5.43 to 0.5.44
• document guarded existing-channel adoption and atomic message-history transition from Add guarded existing-channel project binding #150

Validation

• package manifest parses as @hasna/conversations@0.5.44
• git diff --check passes
• staged and origin/main..HEAD gitleaks scans report no leaks

Tracks Dubai linkage task 11d00f53-f016-40d4-bad7-a5bd36ee4b39.

---

^{Need help on this PR? Tag @codesmith-bot with what you need. Autofix is disabled.}

[andrei-hasna]

[REVIEW] GO — release metadata

Repository / PR: hasna/conversations #151
Head: acf6f49
Tree: 6cfd04291e7cd3985c750e49be750357cae41eea
Base: ec2d1b9
Reviewer run: /root/conversations_adoption_ship/release_0_5_44_review
Timestamp: 2026-08-10T20:44:05Z

Blocking findings: none. Zero reachable in-scope P0/P1 defects found.

Checked risks and validation: exact local/remote head, tree, base, and GitHub merge-result identity; clean worktree/index; one-commit two-file release range; diff hygiene; 0.5.43 to 0.5.44 manifest and changelog consistency; changelog accuracy against merged PR #150; positive and negative npm/conversations/v0.5.44 tag/version controls; unpublished-version and absent-tag preconditions; canonical author/committer and singular Agent: Theophrastus trailer; staged and exact-range gitleaks scans with no leaks; required ci and swift (macOS) jobs successful.

Residual risk is limited to the future tag-triggered publish execution; this review makes no claim that publication has occurred.