[LeonardSEO]

What this PR does

Adds a Weekly plan card under the streak card in Settings on Android and macOS/iOS: this week's progress (Monday to Sunday) toward three goals the user sets in days per week, with a dot per weekday:

• sleep at least 7 h, default 5 nights
• reach Effort 10, default 3 days
• walk 8,000 steps, default 5 days

Each goal shows "Done", "On track" or "Out of reach this week", and its days per week can be changed with - / + (0 turns a goal off). The day counts are stored locally (weeklyPlan.<kind>Days, same keys on both platforms, not in .noopbak). Values outside each metric's plausible range never count.

Pure math in WeeklyPlan (StrandAnalytics) with a Kotlin twin and mirrored fixtures; TZ-free civil-day arithmetic. Display-only.

The official app's weekly plan is server-driven; this is a local equivalent with fixed thresholds.

Type of change

• New feature

How it was tested

• WeeklyPlanTests / WeeklyPlanTest (same fixtures: Monday-first weekday index, only this week's days count, implausible values ignored, days left and on-track, goals with 0 days dropped).
• swift test in Packages/StrandAnalytics: 2146 tests pass.
• ./gradlew testFullDebugUnitTest: 6691 tests, all pass apart from the 2 RecoveryDriversTest half-tie cases that fail the same way on unmodified main.
• Tools/i18n_audit.py --ci, Tools/doc_comment_lint.py, docs/protocol-examples checks and Tools/parity_ledger.py --refresh-derived (derived snapshots included): pass.
• Tools unit tests, the parity acceptance suite and the R-R contract: pass apart from the 4 test_check_source_references cases (/var vs /private/var temp path on macOS) that fail the same way on unmodified main.
• Apple: the macOS app (Strand) builds with this change on my development branch; StrandTests and the iOS target were not run locally for this branch. app-build.yml covers both.

Checklist

• Swift package tests pass for any package I touched
• Android unit tests pass if I touched android/ (apart from the 2 RecoveryDriversTest half-tie cases that fail the same way on unmodified main)
• No new build warnings introduced (Android: none; Apple warnings not checked per branch)
• UI changes use only StrandDesign / Palette / Metrics tokens
• 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

None.

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