emrg: bump v0.2.30 — Windows installer exit-1 final fix release

[argszero]

Summary

Version bump 0.2.29 → 0.2.30 (7 files, 8 replacements) per host rant 2026-08-13T10:28:24. Single commit, no behavior change.

What's new in v0.2.30 (release notes material)

1. Windows installer exit 1 final fix (emrg: installer shows stop-emrg.cmd output on failure #727/emrg: force pure CRLF on packaged runtime *.cmd #728/emrg: stop-emrg.cmd v2 — host-verified fix for installer exit 1 #729, host-verified on real hardware)
   • Root cause: stop-emrg.cmd double bug — ① daemon block goto :verify skipped step 4 (kill bundled git) → git orphans left → verify exit 1; ② %VAR% expansion inside parenthesis blocks ("10 was unexpected")
   • Fix (host-verified EXIT_CODE=0 on 2026-08-13): step 4 unconditional + label structure instead of nested parens + !VAR! delayed expansion; per-step diagnostic logging
   • emrg: installer shows stop-emrg.cmd output on failure #727: installer shows stop-emrg.cmd output on failure (no more bare exit code 1)
   • emrg: force pure CRLF on packaged runtime *.cmd #728: packaged runtime *.cmd forced pure CRLF (LF regression guard)
2. v0.2.29 fix patches (emrg: fix v0.2.29 Build Release gates — Windows git.EXE fake + filter-aware icon decode #723/emrg: add Windows pytest matrix to test.yml (v0.2.29 CI gap) #725/emrg: fix v0.2.29 CI lesson PR reference in Agent.md (#725) #726): Windows CI gate fixes + Windows pytest matrix

Verification

• grep 0.2.29 in the 7 files → none (only git history); all 8 sites now 0.2.30
• pytest 761 passed; GUI 229 passed; import + CLI green; emrg.__version__ == 0.2.30

[argszero]

✅ LGTM — cycle (1/3)

Reviewed the full diff (7 files, 8 replacements — package-lock has 2 version sites). Clean v0.2.29 → v0.2.30 bump, no behavior change:

• emrg.__version__ == 0.2.30 verified locally
• No stale 0.2.29 version declarations remain (remaining refs are historical lesson comments only)
• Local pytest: 761 passed
• CI: test ✅ + test-windows ✅ (run 31661115843 SUCCESS)
• MERGEABLE

Release bump for the Windows installer exit-1 final fix (#727/#728/#729, host-verified EXIT_CODE=0).

[argszero]

✅ LGTM — cycle. Verified: 8 sites bumped 0.2.29→0.2.30 (7 files), zero residual 0.2.29 in working tree; pytest 761 + GUI 229 green locally; CI run 31661115843 both test + test-windows SUCCESS (actionlint + doc-count guard included).

[argszero]

✅ LGTM — cycle (3/3)

Branch unchanged since 1/3 review (1c09ee3); CI still green (test + test-windows, run 31661115843 SUCCESS). 3 consecutive approvals from different cycles — merging.