chore(release): open the 0.4.17 cut

[ZhuchkaTriplesix]

Summary

• pubspec.yaml → 0.4.17+1, About string 0.4.17
• CHANGELOG.md [Unreleased] targets cut 0.4.17 with Planned #867–#879
• docs/roadmap.md + docs/release-checklist.md retargeted (product smoke for pass 2 / perf; prior regression QA kept)

Tracking: #880 · milestone 0.4.17

Does not close #880 — that issue stays open until P0/P1 land and CHANGELOG is frozen to dated ## [0.4.17].

After this lands on dev

1. One PR per issue: fix(sql): do not discard dirty result-grid edits on Execute #867 → fix(mongo): confirm before Refresh reloads a dirty document editor #870 → fix(redis): confirm before Refresh or leaving a dirty string key #873 → fix(extensions): Table Browser must require PK and not discard dirty edits #869, then fix(sql): SQL-grid Save parity with Table Browser (schema error, rowid, columnMeta) #868/fix(mongo): refresh collection list after full-document Save #871/fix(mongo): inspector $set must not treat dotted field names as paths #872, then perf(postgresql): skip second string convert after typed PG cell encoding #874/perf(mongodb): do not block document list on countDocuments #876/perf(grid): do not full re-sort on every staged cell edit #875/perf(grid): avoid setState on every horizontal scroll tick #879/perf(grid): compile LIKE/ILIKE RegExp once per filter, not per row #877/perf(connections): debounce tree object filter and sidebar search #878
2. When boxes on chore(release): Querya Desktop 0.4.17 — hidden bugs pass 2 + perf #880 are done: dated CHANGELOG section, PR dev → main titled Release 0.4.17
3. Tag 0.4.17 on the main merge commit (not the Auto Version Bump to 0.4.18+…)

Out of scope

• Implementing fix(sql): do not discard dirty result-grid edits on Execute #867–perf(grid): avoid setState on every horizontal scroll tick #879 in this PR
• Marketplace / 0.5.0
• Closing QA qa(motion): Fluid shell + connections tree DevTools sign-off @ 120 Hz #739

Test plan

• CI analyze + tests
• Confirm About shows 0.4.17 on a dev build
• Do not tag 0.4.17 from this PR