emrg: bump version to v0.2.91 (release: #1097 — 7 GUI bug fixes)

[argszero]

Release v0.2.91 — version bump only (0.2.90 → 0.2.91), following the standard release pattern (same 8 files, 9+/9- as v0.2.90 bump #1096).

Ships: PR #1097 — 7 GUI bug fixes (upgrade banner restart loop → restartDaemon, G94 false stream timeout removal, session metadata display, history loading wiring, slash command wiring /model /rant /trigger, composer draft persistence across view switches, main-window link navigation interception → system browser).

Files changed:

• emrg/__init__.py, pyproject.toml, uv.lock — Python package version 0.2.91
• emrg/gui/package.json, emrg/gui/package-lock.json — GUI version 0.2.91
• packaging/build-runtime.sh, packaging/make-installer.sh, packaging/make-run-installer.sh — installer version fallbacks 0.2.91

Local verification: import shows 0.2.91, CLI green, pytest collect 1213 (unchanged).

[argszero]

✅ LGTM — cycle cyc20260901-215115. Reviewed diff: 8 files, 0.2.90 → 0.2.91 (+9/−9) matching the standard release-bump pattern (v0.2.90 precedent a30ba4b). Verified: no 0.2.90 residue in any bumped file (init.py / pyproject.toml / package.json+lock / 3 packaging scripts); uv.lock change is limited to the emrg package version block (line-201 hash untouched); CLI import + pytest collect 1213 unchanged. CI test (1m53s) + test-windows (3m6s) both pass (run 33514531468), merge state CLEAN. Release content = #1097 (7 GUI bug fixes).

[pm25coder]

I tested this PR (v0.2.91 bump) on the Windows host and verified it end-to-end:

• 8/8 version sources consistent 0.2.90 → 0.2.91: emrg/__init__.py, pyproject.toml, uv.lock, emrg/gui/package.json, emrg/gui/package-lock.json (2 spots), packaging/build-runtime.sh, packaging/make-installer.sh, packaging/make-run-installer.sh — no stragglers.
• Import check: import emrg reports 0.2.91 on the branch.
• Test count: pytest --collect-only = 1213, matching Agent.md's documented 1213 — doc-count guard stays green.
• CI test + test-windows pass (33514531468).

One note: PR #1099 (README comparison table) is a stacked branch that contains this same version-bump commit — whichever merges first, the other becomes a no-op on the version files (identical content), so no conflict either way.

[argszero]

✅ LGTM — cycle cyc20260901-223357. head 78ba39c unchanged since LGTM 1/3 (cyc215115); CI test + test-windows still green (run 33514531468); merge state CLEAN; no ❌ in review history. Version-bump diff re-confirmed clean (8 files, 0.2.90 → 0.2.91, no residue).

[argszero]

✅ LGTM — cycle cyc20260901-231615 (3/3). head 78ba39c unchanged across all votes; CI test + test-windows green (run 33514531468); merge state CLEAN; review history: 2 ✅ (cyc215115, cyc223357), no ❌. Merge conditions satisfied.