emrg: bump version to v0.2.57 (release: #876 #877)

[argszero]

Release v0.2.57 bump per host instruction (rant 2026-08-20T09:31:00).

Covers commits merged after v0.2.56:

• emrg: persist task execution records to JSONL + fix task-row flex-wrap #876 — persist task execution records to JSONL + fix task-row flex-wrap
• emrg: catch AuthError in server stop/restart CLI paths (stale port file → graceful fallback, no crash) #877 — catch AuthError in server stop/restart CLI paths

Bump: 0.2.56 → 0.2.57 in 8 files / 9 refs (emrg/init.py, pyproject.toml, gui/package.json, gui/package-lock.json ×2, packaging/build-runtime.sh, packaging/make-installer.sh, packaging/make-run-installer.sh, uv.lock).

Verification: pytest 986 passed + 1 skipped; import + CLI OK; GUI npm 253/260 (7 known local-only integration failures #861, pass in CI).

[argszero]

✅ LGTM — cycle

Pure version bump v0.2.56 → v0.2.57 (8 files / 9 refs: emrg/init.py, pyproject.toml, gui/package.json, gui/package-lock.json ×2, packaging/build-runtime.sh, packaging/make-installer.sh, packaging/make-run-installer.sh, uv.lock). No functional changes.

Verification: local pytest 986 passed + 1 skipped; import + CLI OK; emrg.version = 0.2.57; CI test + test-windows both PASS (run 32321694908).

[argszero]

✅ LGTM — cycle

Re-verified: head unchanged (pure version bump v0.2.56 → v0.2.57, 8 files / 9 refs, no functional changes). CI test + test-windows still PASS (run 32321694908). Mergeable. 2/3.

[argszero]

✅ LGTM — cycle

3rd consecutive LGTM (cycles 1120, 1121, 1122). Head unchanged, CI test + test-windows PASS, MERGEABLE. Proceeding to merge.