docs(ui): name only the bump sites, test and hint the code still has

[argszero]

Summary

Three sentences in ui/README.md named something a reader cannot find. Each is corrected in place, naming the change that invalidated it — the idiom this file already uses for its endpoint-card and login-page sections.

1. The bump() wiring (## 动效与系统偏好约定)

The line claimed 4 balance-change sites — wallet top-up, chat deduction, raise-request approval, and the operator crediting themselves via an isMe guard.

The code has 3 sites / 4 bump() calls (ui/js/app.js):

Site	Call
wallet top-up	bump($("#side-balance")) + bump($("#wallet-balance")) (:1360, :1361)
operator credits themselves	u.email === D.USER.email guard (:3102, :3107)
chat deduction	:3304

The approval site lived in the local mock branch that mutated D.USER.balance in place and replayed it into D.TRANSACTIONS. 89963f3 (#94, zero-mock, v1.22) deleted that branch — approveRaise() now POSTs and reloads the list — so the bump went with it, and the isMe guard became the inline comparison above.

Not restored: whether the approver's own balance should bump again is a product decision, not a documentation fix; the doc now describes what the code does.

2. The login "remember me" bullet (## 登录页约定)

It still said a demo-hint element showed the demo account. 35291b3 (#90, v0.6.0 demo-seed removal) deleted that element. Today the class rule in ui/css/style.css:734 is orphaned (no element carries the class) and the login.demo pack key already sits in the unreachable sunset list (src/i18n_pack.rs).

3. The C2113 section (## 交易表「模型」/「Key」列)

It cited transactions_model_and_key_filters_match_the_displayed_placeholder (`src/routes/wallet.rs`). No such test ever existed — dfa7318 (#231) added the README line and, in the same commit, the test tx_model_and_key_filters_match_the_displayed_placeholder (src/routes/wallet.rs:1644). The name now matches the file it cites.

A note on how the corrections read

They describe what was removed instead of re-printing the removed identifiers, so a grep for a stale name still lands nowhere — the same way the C2138 correction above already reads. The login-page section keeps naming its deleted selectors on purpose: there they are the section's own subject.

Tests

• cargo test — 413 passed, 0 failed
• cargo fmt --check — clean
• cargo clippy --all-targets -- -D warnings — clean

Docs only: no production code, no i18n key, no cache-bust token.

Deliberately not in this PR

The orphaned .demo-hint rule in ui/css/style.css is real dead CSS, but deleting it is a code change (and needs a style.css?v= bump), so it belongs in its own PR rather than riding along with a documentation fix.

[argszero]

✅ Self-review (Committer; allow_self_merge: true).

Docs-only change, ui/README.md +3/−3. Verified against the tree, not against the text's own claims:

• bump() call sites in ui/js/app.js: exactly 4 (:1360, :1361 wallet top-up; :3107 operator crediting themselves under u.email === D.USER.email; :3304 chat deduction) — the 3 sites the line now states;
• approveRaise() posts and reloads via loadAdmin() only — no local balance write, no bump;
• the demo-hint element is gone from ui/index.html while the class rule survives at ui/css/style.css:734; the login.demo key is in the unreachable sunset list;
• tx_model_and_key_filters_match_the_displayed_placeholder exists at src/routes/wallet.rs:1644; the prefixed name the README used appears nowhere in the repository and never did;
• every identifier the corrected lines introduce (approveRaise, loadAdmin, numJump, login.demo, .demo-hint) resolves in the tree;
• CI green on this head: test / fmt / clippy 2m53s, msrv 27s; local cargo test 413/0, fmt and clippy --all-targets -- -D warnings clean.

Merging.