Port upstream 0.58.0: re-land stranded Usage & Spend daily ledger (#492) with the 0.67.0 30-row cap

[Finesssee]

Summary

Re-lands the upstream v0.58.0 Usage & Spend port #492. It was merged on 2026-09-13 only into the stacked base port/upstream-0.58.0 and never reached main; git cherry against main @ 7695471b still reported both commits as missing.

• Daily ledger (Settings > Usage & Spend): a table built from the existing SpendContract.daily cost and token fields, newest day first. A missing cost or token count shows "Unknown", and an explicit zero stays $0.00 / 0 tokens.
• Local cost chart hover titles (tray card): each bar's title now also shows that day's token count from chartData.tokensHistory.
• Upstream 0.67.0 Fix Usage & Spend scroll lag on long ranges steipete/CodexBar#3998, which applies once the ledger exists: long ledgers open with the newest 30 days plus a Show all (N) / Show less control. 0.67.0.md row 18 marked this SKIP because Windows had no ledger. This PR adds the ledger, so the row is ported here.

The original commits are cherry-picked with -x. The second commit adapts them to main, which already keeps the canonical spend formatters in lib/usageSpendSharing.ts. The ledger reuses formatUsd, and the token-cell helper is added there as formatSpendTokens instead of a second formatter module.

Upstream reference

• Port v0.58 usage spend daily ledger and chart details #492: upstream commits 36cf4e3aeaee18ebe9cd2655efb8b9e09cfb0a2c (Add hover details to inline cost charts steipete/CodexBar#3413, inline cost chart hover details) and 5e5a9003efb26b9291e48b31a0088e7b666b65c0 (Add focused daily spend ledger steipete/CodexBar#2635, daily spend ledger), v0.58.0.
• Fix Usage & Spend scroll lag on long ranges steipete/CodexBar#3998: upstream ce1b80863e4b78607d7323dc18087cc199a71c38 (perf(spend): bound initial ledger layout on long ranges steipete/CodexBar#4001, v0.67.0 release note Fix Usage & Spend scroll lag on long ranges steipete/CodexBar#3998). spendDailyLedgerVisibleSummaries and SpendDailyLedger.collapsedRowCount = 30 are in Sources/CodexBar/PreferencesSpendDashboardPane.swift, unchanged at v0.70.0 (tag-pinned GET).
• Translated test: SpendDashboardDailyLedgerTests ledger expansion preserves every day in newest first order (arguments 0, 7, 30, 31, 365) → dailyLedgerVisibleRows in UsageSpendDailyLedger.test.tsx.

Ported / Deferred

Change	Status
Daily ledger with unknown vs zero cells	Ported (#492)
Token counts in local cost chart hover titles	Ported (#492)
Newest 30 rows + Show all / Show less	Ported (steipete#3998)
Upstream ledger Providers and Requests columns	Not ported. The Windows SpendContract.daily point has no per-day provider mix or request count, and wire shapes are not invented.

Locale: six new keys (UsageSpendDailyLedger, UsageSpendDailyLedgerHelper, UsageSpendNoDailyData, UsageSpendColDate, UsageSpendColCost, UsageSpendColTokens) are in rust/src/locale.rs, keys.ts and all eight .ftl files. The toggle reuses the existing UsageSpendShowAll / UsageSpendShowLess.

Validation

Run in the worker worktree on Rust 1.98.0 and Node 24:

Command	Result
pnpm install --frozen-lockfile	pass
pnpm run check-locale	877 keys match between Rust and TS
pnpm test	66 files, 404 tests passed
pnpm run lint	0 errors. The 11 warnings are the same unused imports as on main
pnpm run build	pass
cargo +1.98.0 fmt --all --check	pass
cargo +1.98.0 clippy --workspace --all-targets -- -D warnings	pass
cargo +1.98.0 test -p codexbar	2160 passed, 0 failed, 1 ignored
cargo +1.98.0 test -p codexbar-desktop-tauri -- --skip bootstrap_payload_exposes_every_provider_variant	459 passed, 0 failed

The skipped desktop test is the non-hermetic #684 test, which reads the real %APPDATA%\CodexBar\settings.json on main. #711 fixes it separately.

Affected areas

• apps/desktop-tauri/src/components/UsageSpendDailyLedger.tsx (new) and its test
• apps/desktop-tauri/src/components/MenuCardDetails.tsx (chart hover titles) and MenuCard.test.tsx
• apps/desktop-tauri/src/lib/usageSpendSharing.ts (formatSpendTokens) and its test
• apps/desktop-tauri/src/surfaces/settings/tabs/UsageSpendTab.tsx (mounts the ledger)
• apps/desktop-tauri/src/styles.css, apps/desktop-tauri/src/i18n/keys.ts, rust/src/locale.rs, rust/src/locale/*.ftl

UI proof

Pending: a browser-use proof over WebView2 CDP of Settings > Usage & Spend (ledger, 30-row cap, Show all) and the tray card chart titles, built from this head with isolated data. It will be posted as a "UI proof (browser-use)" comment.

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