feat(wallet): transaction summary aggregation + daily gift ledger + net whitelist (rants 2026-08-22T00:04:21/00:07:08/06:34:37)

[argszero]

Summary

Fix the transaction summary accounting + add full token statistics, per host rants 2026-08-22T00:04:21, 2026-08-22T00:07:08 and 2026-08-22T06:34:37 (project=aitokenpool). These three rants share the same root: income/expense classification and full-aggregation statistics.

Backend:

• GET /api/transactions response now includes summary — full SQL aggregation (not page-dependent), respecting the current type filter:

  "summary": { "income_pts", "expense_pts", "net_pts", "tokens", "input_tokens", "cached_tokens", "output_tokens" }

  Income whitelist = earn/topup/gift (positive), consume = negative; input = tokens − cached − output
• type filter now accepts gift
• Daily gift now writes a transactions row (type='gift') in gift.rs ensure_daily_gift — the ledger finally matches the balance (previously invisible)
• Dashboard net/series SQL whitelist fixed (06:34:37): only earn was counted positive → topup (+2000) was subtracted as −2000. Now earn/topup/gift positive, consume negative.

Frontend:

• renderTxSummary uses the backend summary (no longer local page-only sum); falls back to type-based classification (not pts-sign) when summary is absent
• Token stats displayed: Total / Input / Cached / Output (M/K format)
• i18n: tx.summary.tokens/input/cached/output zh+en

Tests (138/138 + fmt + clippy + node --check clean):

• transactions_summary_and_dashboard_net_with_topup: topup(+2000) + consume(0.5, 1000 tok, 200 cached, 100 out) + gift(+1) → income 2001 / expense 0.5 / net 2000.5; token sums; type=consume filter scopes summary; dashboard net = 2000.5 (topup positive)
• gift_writes_transaction_record: gift grant writes type='gift' tx
• wallet_summary_and_dashboard updated: net now includes the daily gift (+1) since it's ledgered

Related Issue

Host rants (project=aitokenpool), verbatim summaries:

• 2026-08-22T00:04:21 — 交易记录汇总条错误：consume 被算进「总收入」+ 每日赠送不入账
• 2026-08-22T00:07:08 — 交易记录汇总条增加 Token 统计（后端 summary 全量聚合，与 00:04:21 一起实现）
• 2026-08-22T06:34:37 — 仪表盘「本月净变化」错误：topup 充值被当成负数扣减

Changes

• Backend summary aggregation (income/expense/net + 4 token fields), full-SQL, type-filter aware
• Gift ledgered into transactions
• Dashboard net/series whitelist (earn/topup/gift positive)
• Frontend summary uses backend data + token stats; type-based fallback
• i18n zh/en for the new summary labels

Tests

• cargo test — 138/138 passed
• cargo fmt --check — clean
• cargo clippy --all-targets -- -D warnings — clean
• node --check ui/js/app.js — clean

Checklist

• Branch name follows convention (feat/tx-summary)
• Commit message uses Conventional Commits
• Single responsibility, minimal change