refactor(ssr): Phase 5 — full Selmer migration of Invoice Bulk Edit; remove the wizard; implement live totals

Migrates the Invoice Bulk Edit modal off the wizard to a plain Selmer form,
building on the parity gate. Structurally Phase 3's bulk-code applied to invoices
(selected entities -> expense-account rows), so near-pure reuse of bulk-code's
flat-state plumbing + edit's account-totals-tbody.

What changed
- Wizard removed: deleted BulkEditWizard/AccountsStep records, MultiStepFormState,
  the step-params[...] prefix, the EDN snapshot, and all mm/* for this modal.
  Replaced with a plain handler + flat wrap-bulk-state (decode straight into
  bulk-edit-schema, no snapshot).
- Selection-as-ids round-trip: the non-editable invoice selection is resolved to a
  concrete not-locked id vector at open and ridden back in hidden ids[] fields (the
  bulk analog of edit's single db/id) -- no filter re-query.
- De-cursored bulk-edit-account-row* to Selmer (sc/*), explicit-id location swap
  (#account-location-<index>, replacing the old find * swap), reusing
  tx-edit/location-select*.
- 100% Selmer modal render path; the surgical edit was done with the text-based
  Edit tool (the clojure-mcp structural tools reformat the whole 1812-line file),
  so the diff is contained to the requires + the bulk-edit region.
- Routes 5 -> 3: GET bulk-edit, PUT bulk-edit-submit, POST bulk-edit-form-changed
  (one whole-form op dispatcher folding the old new-account route).

Implemented the dead totals
- The wizard's TOTAL/BALANCE percentage rows were commented out (#_(...)) with a
  duplicate id="total". Implemented as a #expense-totals sibling-<tbody> refreshed by
  a Rule-4 percentage-keyup swap (the new-account + total + balance routes all fold
  into form-changed / the sibling-tbody).

Scorecard delta (bulk-edit modal): wizard records 2->0, bulk-edit routes 5->3,
step-params/fc-cursor (modal) ->0, location swap find *-> explicit-id, totals
dead->implemented.

Verification: invoice-bulk-edit spec 5/5 (incl. add-row, save, validation, the
implemented totals); full Playwright suite 50/50; cljfmt clean; diff confined to
the modal region. Skill fed: scorecard row + settled repeated-row target-selector
convention; gotcha (structural tools reformat large files -> use text Edit).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.claude/skills/ssr-form-migration/reference/scorecard.md

@@ -133,3 +133,31 @@ Each migration appends one row (after-numbers), referencing the before in the di
 > proper `#summary-totals` block shows running Total + Balanced/Unbalanced (a Rule-4 targeted swap
 > on manual amount edits). The spec was updated to assert the fixed behavior. New cookbook entries:
 > the **inline click-to-edit cell** and the **db/id-keyed item merge** for partially-posted rows.
+
+> **Phase 5 — Invoice Bulk Edit (cold apply in a 1812-line shared file).** Structurally
+> Phase 3's bulk-code applied to invoices (selected entities → expense-account rows:
+> account/location/percentage), so it was near-pure reuse: bulk-code's flat-state plumbing
+> (ids round-trip, `wrap-bulk-state`, schema/decode) + edit's `account-totals-tbody` for the
+> live totals. `BulkEditWizard`/`AccountsStep` + `MultiStepFormState` deleted, `step-params`
+> dropped, the rows de-cursored to Selmer with the explicit-id location swap, bulk-edit
+> routes 5→**3** (the `new-account` + `total` + `balance` routes folded into one
+> `form-changed` op dispatcher + the sibling-`<tbody>` totals swap). **Implemented the dead
+> TOTAL/BALANCE display** (the wizard had them commented out with a duplicate `id="total"`)
+> as a `#expense-totals` sibling-`<tbody>` refreshed by a Rule-4 percentage-keyup swap.
+> Parity held: invoice-bulk-edit spec 5/5, full suite 50/50.
+>
+> **Editing a wizard buried in a large shared file:** the clojure-mcp structural tools
+> (`clojure_edit` / `replace_sexp`) **reformat the whole file** — here that was a spurious
+> 650-line whitespace diff that would bury the real change. For a surgical migration inside a
+> big multi-modal file, use the **text-based Edit tool** instead (the AGENTS.md "absolutely
+> necessary" carve-out), then `load-file` + `cljfmt` to verify. The resulting diff was fully
+> contained to the requires + the bulk-edit region.
+>
+> **Repeated-row target-selector convention — settled (the Phase 5 exit criterion).** Across
+> edit / bulk-code / sales-summary / invoice-bulk-edit the convention converged on: **explicit
+> per-row ids** (`#account-location-<index>`, `#account-row-<index>`) for a cell-local swap
+> (Rule 2), and a **single stable-id sibling-`<tbody>`** (`#account-totals` / `#expense-totals`)
+> for running totals (Rule 4) — *not* data-attribute selectors or a `form-path→selector`
+> helper. Per-row ids are generated from the row index the form already uses for field names
+> (`path->name2`), so server and markup agree by construction. Whole-form swap (Rule 3) covers
+> structural changes (add/remove row). This is now the cookbook default; see `swap-doctrine.md`.