docs(phase-09): complete phase execution

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---
phase: 09-task-creation-ux
verified: 2026-03-18T23:00:00Z
status: human_needed
score: 8/8 must-haves verified
human_verification:
- test: "Create new task — verify frequency section layout"
expected: "4 shortcut chips (Taeglich, Woechentlich, Alle 2 Wochen, Monatlich) appear in a Wrap row; below them an always-visible picker row shows 'Alle [number] [Tage|Wochen|Monate]'; 'Woechentlich' chip is highlighted by default with picker showing '1' and 'Wochen' selected"
why_human: "Visual layout and default highlight state require running the app"
- test: "Tap each shortcut chip and verify bidirectional sync"
expected: "Tapping 'Taeglich' highlights that chip and sets picker to '1'/'Tage'; tapping 'Monatlich' highlights that chip and sets picker to '1'/'Monate'; previously highlighted chip deselects"
why_human: "Widget interaction and visual chip highlight state require running the app"
- test: "Edit the number field and verify chip deselection"
expected: "With 'Woechentlich' highlighted, typing '5' in the number field deselects all chips; changing unit to 'Tage' still shows no chip; typing '1' with 'Tage' selected auto-highlights 'Taeglich'"
why_human: "Bidirectional sync from picker back to chip highlight requires running the app"
- test: "Save a task using each shortcut and verify re-open in edit mode"
expected: "Task saved with 'Alle 2 Wochen' reopens with that chip highlighted and picker showing '2'/'Wochen'; task saved with arbitrary interval (e.g. 5 days) reopens with no chip highlighted and picker showing the correct values"
why_human: "Round-trip edit-mode loading of IntervalType values requires running the app"
- test: "Verify quarterly and yearly tasks load with no chip highlighted"
expected: "An existing quarterly task (IntervalType.quarterly) opens with no chip highlighted and picker showing '3'/'Monate'; a yearly task shows '12'/'Monate' with no chip"
why_human: "Requires an existing quarterly or yearly task in the database to test against"
---
# Phase 9: Task Creation UX Verification Report
**Phase Goal:** Users can set any recurring frequency intuitively without hunting through a grid of preset chips — common frequencies are one tap away, custom intervals are freeform
**Verified:** 2026-03-18T23:00:00Z
**Status:** human_needed
**Re-verification:** No — initial verification
---
## Goal Achievement
### Observable Truths
| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | Frequency section shows 4 shortcut chips (Taeglich, Woechentlich, Alle 2 Wochen, Monatlich) above the freeform picker | VERIFIED | `_buildFrequencySelector()` at line 234 iterates `_ShortcutFrequency.values` in a `Wrap` with `ChoiceChip` for each of the 4 values; `_buildFrequencyPickerRow()` is called unconditionally below the Wrap |
| 2 | The freeform 'Every [N] [unit]' picker row is always visible — not hidden behind a Custom toggle | VERIFIED | `_buildFrequencyPickerRow(l10n, theme)` is called unconditionally at line 262 with no conditional wrapping; `_isCustomFrequency` field removed entirely |
| 3 | Tapping a shortcut chip highlights it AND populates the picker with the corresponding values | VERIFIED | `onSelected` at line 247 calls `shortcut.toPickerValues()` and `setState` setting both `_activeShortcut = shortcut` and updating `_customIntervalController.text` + `_customUnit`; `selected: _activeShortcut == shortcut` drives the highlight |
| 4 | Editing the picker number or unit manually deselects any highlighted chip | VERIFIED | `onChanged` in TextFormField at line 298 calls `_ShortcutFrequency.fromPickerValues(...)` — returns null for non-matching values, clearing `_activeShortcut`; `SegmentedButton.onSelectionChanged` at line 326 does the same |
| 5 | Any arbitrary interval (e.g., every 5 days, every 3 weeks, every 2 months) can be entered directly in the freeform picker | VERIFIED | Picker is a `TextFormField` with `FilteringTextInputFormatter.digitsOnly` (no max) and a 3-segment unit selector; `_resolveFrequency()` at line 393 maps all day/week/month combinations to the correct `IntervalType` values without requiring any mode switch |
| 6 | Editing an existing daily task shows 'Taeglich' chip highlighted and picker showing 1/Tage | VERIFIED | `_loadExistingTask()` at line 56: `case IntervalType.daily` sets `_customUnit = _CustomUnit.days` and `_customIntervalController.text = '1'`; then `_ShortcutFrequency.fromPickerValues(1, days)` returns `daily` — highlighting the chip |
| 7 | Editing an existing quarterly task (3 months) shows no chip highlighted and picker showing 3/Monate | VERIFIED | `case IntervalType.quarterly` sets `_customUnit = _CustomUnit.months` and `_customIntervalController.text = '3'`; `fromPickerValues(3, months)` returns `null` (3 months is not a shortcut), leaving `_activeShortcut` null |
| 8 | Saving a task from the new picker produces the correct IntervalType and intervalDays values | VERIFIED | `_resolveFrequency()` maps: 1 day → (daily, 1); N days → (everyNDays, N); 1 week → (weekly, 1); 2 weeks → (biweekly, 14); N weeks (N>2) → (everyNDays, N*7); 1 month → (monthly, 1, anchorDay); N months → (everyNMonths, N, anchorDay). Result is applied in `_onSave()` at line 423. All 144 existing tests pass. |
**Score:** 8/8 truths verified (automated)
---
### Required Artifacts
| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `lib/features/tasks/presentation/task_form_screen.dart` | Reworked frequency picker with shortcut chips + freeform picker | VERIFIED | File exists, 536 lines; contains `_ShortcutFrequency` enum (line 504), `_activeShortcut` state (line 37), `_buildFrequencySelector()` (line 234), `_buildFrequencyPickerRow()` (line 280), `_resolveFrequency()` (line 393), `_loadExistingTask()` (line 56) |
| `lib/l10n/app_de.arb` | German l10n strings for shortcut chip labels | VERIFIED | Contains `frequencyShortcutDaily` ("Täglich"), `frequencyShortcutWeekly` ("Wöchentlich"), `frequencyShortcutBiweekly` ("Alle 2 Wochen"), `frequencyShortcutMonthly` ("Monatlich") at lines 51-54 |
| `lib/l10n/app_localizations.dart` | Abstract getters for new shortcut strings | VERIFIED | `frequencyShortcutDaily`, `frequencyShortcutWeekly`, `frequencyShortcutBiweekly`, `frequencyShortcutMonthly` abstract getters present at lines 325-347 |
| `lib/l10n/app_localizations_de.dart` | German implementations of shortcut string getters | VERIFIED | All 4 `@override` getter implementations present at lines 132-141 with correct German strings |
---
### Key Link Verification
| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| `task_form_screen.dart` | `lib/features/tasks/domain/frequency.dart` | `IntervalType` enum in `_resolveFrequency()` and `_loadExistingTask()` | WIRED | `IntervalType.` referenced at 13 sites (lines 71, 74, 83, 86, 89, 92, 95, 98, 398, 400, 403, 406, 408, 411, 413); all 8 enum values handled; `frequency.dart` imported via `../domain/frequency.dart` |
| `task_form_screen.dart` | `lib/l10n/app_de.arb` | `AppLocalizations` for chip labels via `l10n.frequencyShortcut*` | WIRED | `l10n.frequencyShortcutDaily/Weekly/Biweekly/Monthly` called at lines 270-276 in `_shortcutLabel()`; `AppLocalizations` imported at line 10 |
---
### Requirements Coverage
| Requirement | Source Plan | Description | Status | Evidence |
|-------------|------------|-------------|--------|----------|
| TCX-01 | 09-01-PLAN.md | Frequency picker presents an intuitive "Every [N] [unit]" interface instead of a flat grid of preset chips | SATISFIED | `_buildFrequencyPickerRow()` always-visible TextFormField + SegmentedButton row replaces the old 10-chip `FrequencyInterval.presets` grid; `_isCustomFrequency` and `_selectedPreset` removed entirely |
| TCX-02 | 09-01-PLAN.md | Common frequencies (daily, weekly, biweekly, monthly) are available as quick-select shortcuts without scrolling through all options | SATISFIED | `_ShortcutFrequency.values` iterated in a `Wrap` at lines 243-257; 4 ChoiceChips one-tap select and populate the picker |
| TCX-03 | 09-01-PLAN.md | User can set any arbitrary interval without needing to select "Custom" first | SATISFIED | Picker is always visible; number field accepts any positive integer; no mode gate or "Custom" toggle exists in the code |
| TCX-04 | 09-01-PLAN.md | The frequency picker preserves all existing interval types and scheduling behavior (calendar-anchored monthly/quarterly/yearly with anchor memory) | SATISFIED | `_resolveFrequency()` passes `anchorDay: _dueDate.day` for monthly and everyNMonths; `_loadExistingTask()` handles all 8 `IntervalType` values in a complete exhaustive switch; `frequency.dart` not modified; 144 tests pass |
No orphaned requirements found — all 4 TCX-* IDs declared in PLAN frontmatter are present in REQUIREMENTS.md and verified above.
---
### Anti-Patterns Found
| File | Line | Pattern | Severity | Impact |
|------|------|---------|----------|--------|
| None | — | — | — | — |
No TODOs, FIXMEs, placeholders, empty implementations, or console.log-only handlers found in any modified file.
**Removed code confirmed absent:**
- `_selectedPreset` field: not found
- `_isCustomFrequency` field: not found
- `FrequencyInterval.presets` iteration loop: not found
- `_buildCustomFrequencyInput` (old name): not found (correctly renamed to `_buildFrequencyPickerRow`)
**Backward compatibility confirmed:**
- `frequency.dart` is unchanged; `FrequencyInterval.presets` remains in the model for `template_picker_sheet.dart` and `task_row.dart` usage
---
### Human Verification Required
All automated checks passed. The following items require a running app to confirm the interactive UX behavior:
#### 1. Frequency Section Layout
**Test:** Launch the app, navigate to any room, tap "+" to create a new task, scroll to the "Wiederholung" section.
**Expected:** A row of 4 shortcut chips (Täglich, Wöchentlich, Alle 2 Wochen, Monatlich) appears in a compact Wrap; below them the always-visible "Alle [N] [Tage|Wochen|Monate]" picker row; "Wöchentlich" chip is highlighted by default; picker shows "1" with "Wochen" segment selected.
**Why human:** Visual layout, spacing, and default highlight state require running the app.
#### 2. Chip-to-Picker Bidirectional Sync
**Test:** Tap "Täglich" — verify chip highlights and picker updates to "1"/"Tage". Tap "Monatlich" — verify chip highlights and picker updates to "1"/"Monate". Previous chip deselects.
**Expected:** Smooth single-tap update of both chip highlight and picker values.
**Why human:** Widget interaction and visual state transitions require running the app.
#### 3. Picker-to-Chip Reverse Sync
**Test:** With "Wöchentlich" highlighted, type "5" in the number field. Verify all chips deselect. Change unit to "Tage" — still no chip selected. Type "1" with "Tage" selected — verify "Täglich" chip auto-highlights.
**Expected:** The picker editing recalculates chip highlight in real time.
**Why human:** Text field onChange and SegmentedButton interaction require running the app.
#### 4. Round-Trip Edit Mode — Shortcut Task
**Test:** Create a task using "Alle 2 Wochen" shortcut. Re-open it in edit mode.
**Expected:** "Alle 2 Wochen" chip is highlighted; picker shows "2" with "Wochen" selected.
**Why human:** Requires saving to database and reopening to test _loadExistingTask() end-to-end.
#### 5. Round-Trip Edit Mode — Non-Shortcut Task
**Test:** Create a task with freeform "5"/"Tage". Re-open it in edit mode.
**Expected:** No chip highlighted; picker shows "5" with "Tage" selected.
**Why human:** Requires running the app and database round-trip.
#### 6. Quarterly / Yearly Task Edit Mode
**Test:** If an existing quarterly or yearly task is available, open it in edit mode.
**Expected:** Quarterly task: no chip highlighted, picker shows "3"/"Monate". Yearly task: picker shows "12"/"Monate" with no chip.
**Why human:** Requires an existing task with IntervalType.quarterly or IntervalType.yearly in the database.
---
### Static Analysis and Tests
- `flutter analyze --no-fatal-infos`: **No issues found** (ran 2026-03-18)
- `flutter test`: **144/144 tests passed** (ran 2026-03-18)
- Commit `8a0b69b` verified: feat(09-01) with correct 4-file diff (task_form_screen.dart +179/-115, app_de.arb +4, app_localizations.dart +24, app_localizations_de.dart +12)
---
### Gaps Summary
No gaps found. All automated must-haves are verified. The phase goal — intuitive frequency selection with shortcut chips and always-visible freeform picker — is fully implemented in the codebase. Human verification of interactive UX behavior is the only remaining item.
---
_Verified: 2026-03-18T23:00:00Z_
_Verifier: Claude (gsd-verifier)_