docs: drop completed release-milestone docs; trim roadmap

Remove RELEASE-0.10-PLAN.md and RELEASE-0.10-TASKS.md now that the
0.10.0 milestone work is finished (history preserved in git). Trim
ROADMAP.md to open items only; completed work lives in CHANGELOG.md.
Version stays 0.10.0 — this release is not yet tagged/shipped.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/ROADMAP.md

@@ -1,30 +1,9 @@
 # Roadmap
 
 This file tracks planned GoSentry work that is larger than a single bug fix.
+Completed work is recorded in [CHANGELOG.md](CHANGELOG.md), not here.
 
-## Completed: Release 0.10.0
+## Open Items
 
-**Refactoring Follow-Ups (T6.1)**
-
-File-size guidelines have been addressed:
-- `src/ui/jobs_view.go` split into `jobs_view.go` + `jobs_toolbar.go` and
-  `jobs_details.go` to bring it under the ~250 UI file guideline.
-- `src/app/operations_test.go` remains at 536 lines (soft limit); revisit when
-  next editing if file size becomes a barrier.
-
-**Post-Field-Test Cleanup (T6.2)**
-
-Stale diagnostics and obsolete compatibility code removed:
-- Removed autostart-migration code.
-- Cleaned `.gitignore` and `.dockerignore` of YAML import rules.
-- Kept startup-timing History instrumentation for future performance tracking.
-
-**Delivery And Packaging (T7.1, T7.2)**
-
-Portable distribution variants complete:
-- Windows portable `.zip`: `scripts\package-windows.bat` builds and bundles
-  `gosentry.exe`, `README.md`, and `CHANGELOG.md`.
-- Linux portable `.tar.gz`: `scripts/package-linux.sh` builds `linux-amd64`
-  natively and `linux-arm64` via cross-compilation.
-
-Both formats bundle files at the archive root for direct extraction and use.
+_No open roadmap items. Release 0.10.0 closed out the refactoring follow-ups,
+post-field-test cleanup, and portable packaging work._