feat(logs): add token consumption to app dashboard and usage records

[ChanZany]

feat(logs): add token consumption to app dashboard and usage records

Neither MongoDB app chat logs nor the wallet usage endpoints carried token
usage, so the cumulative token card and the token trend charts rendered as
zeros in both the app dashboard and the usage dashboard.

Engine

• collect the root node inputTokens/outputTokens into
  NodeResponseWriteSummary and $inc totalInputTokens/totalOutputTokens on
  app_chat_logs, matching the existing totalPoints semantics
• extend AppChatLogSchema and the chat log mongoose schema accordingly

Contracts

• add token fields to the app log data points, the total-data response, the
  wallet usage dashboard item and UsageListItem; seed fakeChartData with
  zeroed token keys so the non-Plus preview still type-checks

FastGPT UI

• add the cumulative "Token consumption" card and the token trend chart to
  the app chat log dashboard
• add total/input/output token columns to the usage table and a token chart
  to the usage dashboard
• register the tokens icon, support allowDecimals in LineChartComponent and
  add the en/zh-CN/zh-Hant i18n keys

Tests

• assert token collection in the saveChat, nodeResponseStorage,
  nodeResponseSink, outLink runtime, debugChat and scheduleTrigger suites