118 lines
4.2 KiB
Markdown
118 lines
4.2 KiB
Markdown
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---
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phase: 05-multi-wald-system-wald-pagination-und-navigation-zwischen-w-ldern
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plan: 02
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subsystem: ui
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tags: [forest, pagination, navigation, indexeddb, animation]
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# Dependency graph
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requires:
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- phase: 05-01
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provides: renderForestScene with page param, SLOTS_PER_PAGE constant, currentForestPage in Progress
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provides:
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- Arrow navigation between forest pages (prev/next buttons wired in initForestScreen)
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- currentForestPage persisted to IndexedDB on every navigation
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- Fade-out/fade-in opacity transition on page change
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- Post-lesson "Zurück zum Wald" navigates to page containing new element
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- slotIndex in reward.ts uses SLOTS_PER_PAGE constant (no more hardcoded 12)
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affects:
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- forest navigation flow
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- reward screen back-to-forest flow
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# Tech tracking
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tech-stack:
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added: []
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patterns:
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- navigateToPage closure captures currentPage in initForestScreen for correct button wiring
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- saveProgress called with fresh getProgress read to avoid stale data on navigation
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key-files:
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created: []
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modified:
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- src/forest/scene.ts
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- src/forest/reward.ts
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- src/app.ts
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key-decisions:
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- "navigateToPage in initForestScreen reads fresh progress before saving to avoid overwriting concurrent changes"
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- "Zurück zum Wald computes newPage from elements.length before initForestScreen to control which page is shown"
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- "Fade animation uses grid.style.opacity toggle with requestAnimationFrame for natural transition"
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patterns-established:
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- "Pattern: Page persistence reads fresh progress (getProgress) rather than mutating stale reference"
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requirements-completed: [MWLD-05, MWLD-06, MWLD-07]
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# Metrics
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duration: 2min
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completed: 2026-03-29
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---
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# Phase 05 Plan 02: Multi-Wald Navigation Summary
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**Arrow navigation between forest pages with IndexedDB persistence, fade animation, and correct post-lesson page targeting**
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## Performance
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- **Duration:** 2 min
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- **Started:** 2026-03-29T21:01:24Z
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- **Completed:** 2026-03-29T21:03:30Z
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- **Tasks:** 2 (+ 1 auto-approved checkpoint)
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- **Files modified:** 3
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## Accomplishments
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- Wired prev/next navigation buttons in `initForestScreen` with closure over `currentPage`
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- Persists `currentForestPage` to IndexedDB on every page navigation via `saveProgress`
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- Added 0.3s opacity fade-out/fade-in transition to `renderForestScene` for smooth page changes
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- "Zurück zum Wald" after lesson now computes last page from element count and updates progress before `initForestScreen`
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- Replaced hardcoded `% 12` in `reward.ts` slot calculation with `% SLOTS_PER_PAGE` import
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: Wire navigation handlers and page persistence in initForestScreen** - `13b8df5` (feat)
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2. **Task 2: Fix reward flow and all renderForestScene call sites for pagination** - `8f88843` (feat)
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3. **Task 3: Verify multi-forest navigation** - auto-approved checkpoint (--auto mode)
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## Files Created/Modified
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- `src/forest/scene.ts` - Added `saveProgress` import, navigation button handlers with `navigateToPage` closure, fade animation
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- `src/forest/reward.ts` - Imported `SLOTS_PER_PAGE` from `./scene`, replaced `% 12` with `% SLOTS_PER_PAGE`
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- `src/app.ts` - Imported `SLOTS_PER_PAGE` and `getForestElements`; updated Zurück-zum-Wald callback to navigate to element's page
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## Decisions Made
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- `navigateToPage` reads fresh progress before saving to avoid overwriting data changed by other parts of the app during navigation
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- The "Zurück zum Wald" callback computes `newPage` from `elements.length` after the new element is already saved, so it always resolves to the correct last page
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- `initForestScreen` is called after setting `currentForestPage` in progress so the nav renders correctly from the start
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## Deviations from Plan
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None - plan executed exactly as written.
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## Issues Encountered
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None.
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## Next Phase Readiness
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- Multi-Wald navigation complete. Phase 05 is fully done.
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- Forest pagination is interactive, persistent, and animated.
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- No blockers.
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## Self-Check: PASSED
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- src/forest/scene.ts: FOUND
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- src/forest/reward.ts: FOUND
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- src/app.ts: FOUND
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- 05-02-SUMMARY.md: FOUND
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- Commit 13b8df5: FOUND
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- Commit 8f88843: FOUND
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---
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*Phase: 05-multi-wald-system-wald-pagination-und-navigation-zwischen-w-ldern*
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*Completed: 2026-03-29*
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