Add live football detail with animated gridiron (NFL, NCAAF); unify detail options

[gerber55555]

What this adds

Live-game detail for football (NFL, NCAAF), following the pattern of the baseball detail feature:

• Down & distance and field position in a compact row aligned with the timeout indicators; the game clock takes the center row at score size
• Animated gridiron graphic: ball at the current spot (parsed from ESPN's possessionText in the provider, validated against yardLine), yellow first-down line, end zones, 10-yard hash marks
• Play animation: on each new play the ball slides (~1s) from the previous spot to the new one with a fading green/red trail sized to the yards gained or lost; the first-down marker holds the old line-to-gain until the ball has crossed it. Turnovers slide without a trail (drive direction reverses)
• Touchdowns: the ball slides across the goal line into the end zone and stays parked there through the PAT until the kickoff spot arrives
• Last play description below the field (static, ellipsis-truncated), possession indicator under the possessing team's logo, timeouts remaining under each score, red-zone accents
• Full grayscale when colored: false — every field color is gated behind .wrapper.colored, matching the baseball convention

Live play
Gain trail
Red zone
Touchdown
colored: false

Unified config options

showDetail, detailInterval, detailViewOverride now control live detail for both baseball and football. The baseball-specific options (showBaseballDetail, baseballDetailInterval, baseballDetailViewOverride) are deprecated but still work — start() maps them onto the unified options, so existing configs are unaffected. They are removed from the README table. The baseball e2e scenarios intentionally keep the deprecated options so the suite exercises the mapping.

The baseball fast-poll mechanism was generalized to a data-driven per-sport structure (also fixes a hardcoded league-list drift); getBaseballScoresOnly is now getFastPollScoresOnly(leagues).

Robustness fixes found along the way

• node_helper no longer throws at startup when logos/logos_custom is missing (getDirectoryTree existence guard)
• The frontend retries the startup GET-LOCAL-LOGOS handshake until answered — previously, a reply lost during a slow start meant score polling never began (relevant on slow Pi boots)
• e2e harness hardening: the suite had a latent ~1-failure-per-run flake — a page from a finished test can outlive teardown and socket-reconnect to the next scenario's MM on the shared port, wiping its data (instanceId is identical on every page). Fixed with a unique MM port per scenario, a real readiness check (MM core + rendered content, one reload retry), a port-free wait after stop, and a debugHours shim so runs before 3 AM local aren't broken by rolloverHours. Screenshot-only scenarios pass silently on blank pages, which is why this was never caught — the new scenarios assert DOM content

Testing

• 16 new unit tests (computeFieldPosition coordinate math, possession mapping, halftime degradation, SDSU trailing-space abbreviation fix): 129/129 passing
• 6 new e2e scenarios (live, red zone, halftime degradation, touchdown, monochrome + assertions on ball position, goal-to-go marker suppression, and computed mono colors): 30/30 passing, verified stable across 4+ consecutive runs
• Manually verified in a live browser session: slide/trail animations, first-down hold, turnover suppression, punt/FG/TD sequences, fast-poll start/stop, both color modes

🤖 Generated with Claude Code

https://claude.ai/code/session_01S1UJvj9naLkkQgAGqNLVrw