Android: Sleep screen — Hours vs Needed and Sleep Consistency analytics cards

[ujix]

What this PR does

Executive summary: Adds two new analytics cards to the Sleep screen — "Hours vs Needed" with a component breakdown bar, and "Sleep Consistency" with a Canvas-drawn nightly bar chart.

Details:

Sleep screen — analytics cards

• Added: "Hours vs Needed" card — score %, trend arrow, gradient progress bar, stacked Healthy/Strain/Debt component bar, slept/needed/debt footer row
• Added: "Sleep Consistency" card — Canvas-drawn vertical bar chart with bed-time at top / wake-time at bottom, Y-axis time labels, X-axis day labels, dashed typical overlay lines (typical bed and wake times)
• Fixed: Consistency score now counts nights where both bed and wake fall within 45 min of the user's typical times; the previous SD-based formula always returned 0 %
• Fixed: Consistency card Y-axis orientation flipped to match natural night flow (early evening → morning, top-to-bottom)
• Fixed: typicalBed / typicalWake declared before the consistentNights count block that references them (was a forward-reference compile error)

Validation: :app:assembleFullDebug, testFullDebugUnitTest, and testDemoDebugUnitTest all green.

Type of change

• Bug fix
• New feature
• Refactor / cleanup
• Documentation
• CI / tooling

How it was tested

Android 16. Real Samsung device. WHOOP 4.0. Tested: consistency card with real multi-night data, score correctly increments when within 45-min window, Hours vs Needed bar reflects actual debt/surplus, component bar proportions sum correctly.

Checklist

• Swift package tests pass for any package I touched (swift test in Packages/<name>)
• Android unit tests pass if I touched android/ (./gradlew testFullDebugUnitTest)
• No new build warnings introduced
• UI changes use only StrandDesign tokens — no hardcoded colors, fonts, or spacing
• No hardcoded hex frame bytes; protocol facts live in the schema / decoders
• Follows the conventions in docs/CONTRIBUTING.md
• I did not commit generated output (Strand.xcodeproj/) or any secrets/keystores

Related issues

[NoopApp]

Solid analytics cards — the Hours-vs-Needed breakdown and the Consistency bedtime/wake scatter both have correct math. Two things before this could land on its own:

1. The Consistency chart uses a hardcoded android.graphics.Color.argb(140, 200, 200, 200) Paint (~line 397) — NOOP requires Palette tokens, no hardcoded colors anywhere.
2. There are ~280 lines of SleepMetricDetailScreen / SleepMetricDetailSheetContent defined but never called — dead code to remove.

More importantly: this is an intermediate rung of your Sleep series — #260 re-adds these same two cards in their final form alongside the bed/wake editing. To avoid reviewing the same cards three times, we're resolving the whole Sleep-screen direction via #260. If we decide we want the cards without the editing, we'll fix-and-ship this one instead. Holding open pending that call — thank you.

[ujix]

Both issues addressed:

• Hardcoded color: replaced android.graphics.Color.argb(140, 200, 200, 200) with Palette.textTertiary.toArgb() on the Consistency chart Y-axis labels.
• Dead code: removed both SleepMetricDetailScreen and SleepMetricDetailSheetContent — neither is called from this PR. SleepMetricDetailSheetContent has been moved to Android: Sleep screen — metric detail ModalBottomSheet #259 where it's actually used.

Branch updated and force-pushed.

[NoopApp]

Thanks — the Palette.textTertiary.toArgb() swap and removing the dead SleepMetricDetailScreen/SheetContent both look right. To set expectations: these two cards land in their final form via #260 (which re-adds them alongside the bed/wake editing), so we're still resolving the whole Sleep-screen direction as one decision on #260 rather than merging the intermediate rungs — your fixes here carry forward into that. Keeping open pending the #260 call.

[NoopApp]

Superseded — the Hours-vs-Needed + Consistency cards shipped in v2.9.0 as part of the combined Sleep update (#260). Thanks @ujix! Closing.