fix: retain data panel sessions across tab switches

[jackhai9]

Switching between Binance tabs used to stop both data panels and initialize them again on return, clearing CMC rows and repeating clock, funding, and historical requests. Keep activated route sessions, in-flight requests, displayed values, and expanded details across visibility changes; only fetch again when the foreground deadline is due.

• CMC refreshes 30 seconds after completion in the foreground and five minutes in the background. Current funding uses 15 seconds and 60 seconds respectively. Failed attempts retain the same cooldown rules.
• Historical data keeps its five-minute publication schedule and hourly clock calibration. Hidden tabs pause the second-by-second display and update it immediately on return, including settlement expiry. Missed windows are not replayed, and late historical responses cannot claim a fresh snapshot.
• Closing or changing routes still invalidates old work. History also validates the full route session when Binance replaces its history methods before the route watchdog notices. Initially hidden tabs wait until first visited.

Release Trading Data 1.2.2 and CoinMarketCap Data 0.2.2 with rebuilt install artifacts and updated lifecycle documentation.

Validation: full npm test passed 2548/2548, including 23 background lifecycle scenarios; the generated-panel Playwright suites passed 41/41. Both builds, syntax and metadata checks, test lint, and git diff --check passed. Independent read-only review approved the final implementation. Rendered browser output was inspected. Visibility and suspended animation frames were simulated; live Chrome throttling/freezing, Tampermonkey installation, and live Binance responses were not exercised.