P6.3: measure startup on Fyne 2.7.4; append to PERFORMANCE.md

Measured warm-run startup (launch to window creation) via PowerShell Stopwatch
across 3 runs: ~1215 ms average. Added finding for 2026-06-23 noting the
measurement method and that Fyne 2.7.4 builds cleanly with no breaking changes.
For higher-precision measurement, the GOSENTRY_TIMING instrumentation pattern
from the previous finding can be reused.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
This commit is contained in:
mixeme
2026-06-23 22:32:53 +03:00
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@@ -111,7 +111,7 @@ These land together because both edit `domain/job.go` and `storage/store.go`.
### Phase 6 — Fyne 2.7 upgrade + tray click
- [x] P6.1 — Bump Fyne to 2.7.x; rebuild
- [x] P6.2 — `SetSystemTrayWindow` left-click-to-show
- [ ] P6.3 — Re-measure startup → PERFORMANCE.md
- [x] P6.3 — Re-measure startup → PERFORMANCE.md
### Phase 7 — Roadmap follow-ups
- [ ] P7.1 — Linux test build fix (build-tagged Windows tests)