feat(priwa): unify mobile map controls

[JesJehle]

Briefing

This simplifies PRIWA mobile map controls around two non-blocking bottom sheets: one for offline maps and one for map layers. It keeps the map visible while users inspect downloaded coverage, select another square area, switch the basemap, or control the Warnkarte, and moves the two primary field actions into one consistent bottom-right stack. The reusable sheet and compact layer cards also improve the DeadTrees mobile layer panel.

What changed

• Consolidated mobile basemap and Warnkarte controls into one draggable, dismissible layers sheet, with explicit Warnkarte visibility and zoom actions.
• Moved offline management and area selection into compact bottom sheets while preserving the centered square download frame and existing coverage polygons.
• Replaced independent panel booleans with one mutually exclusive panel state for layers, offline maps, and the mobile tree list.
• Moved add-tree and locate actions to equal-sized bottom-right buttons; the left stack now contains only layers and the tree list.
• Made Warnkarte load failures action-scoped and temporary, while retaining an explicit desktop retry path.

Validation

• npm --prefix frontend test — 67 files and 333 tests passed.
• npm --prefix frontend run lint — passed.
• npm --prefix frontend run build — passed; only the existing chunk-size warning remains.
• scripts/lint-ast-grep.sh — passed.
• playwright.local.config.ts e2e-local/priwa-warnkarte-local.spec.ts — all 9 mocked Warnkarte desktop, tablet, and mobile journeys passed.
• npm --prefix frontend run test:e2e:local:priwa:write — all 4 isolated Supabase/PWA offline write and sync journeys passed.
• iPhone-size screenshots at 393 x 852 were inspected for the compact layers sheet, primary action placement, offline management sheet, and centered square selection; a separate DeadTrees mobile layers screenshot confirmed the shared compact cards.
• Thermonuclear review and the second/final Codex autoreview found no remaining P0/P1 blocker.

Risk and limitations

This changes mobile control placement and the initial sheet height, and changes the shared DeadTrees mobile layer sheet to open compactly. It does not change offline tile limits, cached data formats, database schema, API contracts, or Warnkarte data.

Reviewer guide

Please focus on the shared bottom-sheet drag/snap behavior, the single active-panel state in PRIWA, and the explicit Warnkarte retry behavior when the initial overlay request fails.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-02T10:22:13.135334Z	95f1377	PR opened

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Frontend preview

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Channel: pr573-feat-priwa-unified-map-c
Commit: 95f13774847395e780b23ad05f5c712e7dc0f7c2