diff --git a/HISTORY.md b/HISTORY.md
index 7e065a7..c58ee00 100644
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@@ -9,6 +9,10 @@
 
 - **[Tracker] Killed the getTracker N+1 (was ~2–3 DB round-trips × N bills every home-page load)** — inside `bills.map`, `getTracker` ran a payments query per bill (`fetchPaymentsForBillCycle`) plus `computeAmountSuggestion` per bill, and the suggestion alone fired up to 12 queries per bill (6 months × 2) — roughly 70–450 queries for a 35-bill account on every Tracker load. Now one query fetches all bills' cycle payments (grouped in JS by each bill's own range) and two queries compute all amount suggestions (`computeAmountSuggestionsBatch`), replacing the per-bill loops. Behavior-preserving — `tests/amountSuggestionService.test.js` pins the batched suggestion to be byte-identical to the per-bill function, and the `trackerService` tests still pass unchanged. (Tracker P1)
 
+### 🧹 Bill modal decompose
+
+- **[Bill modal] Broke the 1,733-line God-component into focused sub-components** — `BillModal.jsx` did bill fields + payment CRUD + linked-transaction unmatch + merchant rules + templates + debt/autopay all in one file. Extracted seven presentational components under `client/components/bill-modal/` (`DebtDetailsSection`, `AutopayTrustIndicator`, `PaymentHistoryList`, `PaymentFormFields`, `UnmatchDialogs`, `LinkedTransactionsSection`, `TemplateSection`) plus a shared `transactionDisplay.js` helper module, threading state/handlers via props. State stays in the parent (the save action is unchanged), so it's **behavior-preserving** — each extraction was its own commit, verified with `npm run build` + `npm run test:client`. BillModal is now **1,090 lines (from 1,733, −37%)** and the big interwoven blocks (payments, linked transactions, unmatch flows, debt) are each their own testable file. (Tracker BM2)
+
 ### 🎨 Tracker summary cards
 
 - **[Tracker] Fixed the two identical "Paid" boxes + surfaced Remaining + month-progress** — the summary row rendered `SummaryCard type="paid"` **twice** (this month and last month), visually indistinguishable, while the actionable *remaining* number only lived in the CashFlow card below. Now the previous-month figure is a muted **"Last month: $X" hint** under Total Paid (not a second green box), and a **Remaining** card (the existing-but-unused blue card type) surfaces `summary.remaining` when there's no bank hero (in bank mode the hero already shows the projected remaining, so it isn't duplicated). Added a compact **"$X of $Y paid · N bills left"** progress line under the cards. Respects the `tracker_show_summary_cards` setting; light/dark + a11y unchanged. *(The Playwright visual baseline for `/` may need a refresh via `npm run test:e2e:update` since the card row changed intentionally.)* (Tracker T3)