emrg: bump version to v0.2.89 (release: #1080-#1083 — TUI size-0 guard, GUI tool/text order, LLM stream retry, session message_count)

[argszero]

Version bump 0.2.88 → 0.2.89 (release action rant 2026-08-31T15:46:15, host instruction 2026-08-31 15:45).

Release content (merged on master):

• emrg: guard TUI terminal size probe against 0x0 winsize #1080 (392a37e): TUI — guard terminal size probe against 0x0 winsize (CJK misline fix)
• emrg: gui — fix cross-round tool/text ordering (tool-after text shown above tool) #1081 (1fdc606): GUI — cross-round tool/text ordering (sealed segments → new AssistantEntry)
• emrg: retry LLM stream transport errors (ReadTimeout) before any delta is yielded #1082 (4fd2b63): LLM — retry stream transport errors (ReadTimeout) before any delta, yielded_delta guard
• emrg: session — recompute message_count on compact, count message records only (rant 2026-08-31T14:18:14) #1083 (ad13965): session — recompute message_count on compact, count message records only

Also includes #1084 (0be7f46, Agent.md doc-count sync 1183→1186) which makes post-merge master CI green (run 33370330021).

Files bumped: emrg/init.py, pyproject.toml, emrg/gui/package.json, emrg/gui/package-lock.json, packaging/build-runtime.sh, packaging/make-installer.sh, packaging/make-run-installer.sh, uv.lock (9 insertions, 9 deletions).

After this PR merges, tag v0.2.89 will be pushed at the merge commit to trigger Build Release, then the GitHub Release (Latest) will be created.

[argszero]

✅ LGTM — cycle (1/3)

Reviewed head 8703ea1 against master (0be7f46):

• Version bump 0.2.88 → 0.2.89 across exactly the same 8 files as the v0.2.88 bump (b0c67b7): emrg/init.py, pyproject.toml, emrg/gui/package.json, emrg/gui/package-lock.json, packaging/build-runtime.sh, packaging/make-installer.sh, packaging/make-run-installer.sh, uv.lock (9 insertions, 9 deletions, no other changes).
• All version strings verified 0.2.89; no 0.2.88 remnants on the branch.
• CI test + test-windows green (run 33370419756); mergeable_state clean.
• Release content (#1080-#1083) already on master; doc-count sync #1084 also merged — post-merge master CI 33370330021 SUCCESS.
  No issues found.

[argszero]

✅ LGTM — cycle (2/3)

Re-verified head 8703ea1 against master (0be7f46) this cycle:

• diff unchanged: 8 files / 9 insertions / 9 deletions (emrg/init.py, pyproject.toml, emrg/gui/package.json, emrg/gui/package-lock.json, packaging/build-runtime.sh, packaging/make-installer.sh, packaging/make-run-installer.sh, uv.lock) — the full version-bump file set, same as the v0.2.88 bump (b0c67b7).
• Version strings 0.2.89 confirmed in spot-check; CI test + test-windows green (run 33370419756); mergeable_state clean.
  No issues found.

[argszero]

✅ LGTM — cycle (3/3)

Re-verified head 8703ea1 against master (0be7f46) this cycle:

• diff unchanged: 8 files / 9 insertions / 9 deletions — the full version-bump file set (emrg/init.py, pyproject.toml, emrg/gui/package.json, emrg/gui/package-lock.json, packaging/build-runtime.sh, packaging/make-installer.sh, packaging/make-run-installer.sh, uv.lock), same as the v0.2.88 bump (b0c67b7).
• CI test + test-windows green (run 33370419756); mergeable_state clean.
• 2 prior consecutive ✅ (08:00:01Z, 08:06:41Z) from distinct cycles, no ❌.
  No issues found.