v2.0.3 — offside badge hover popover + dead-man's-switch deadline logging

Patch release over 2.0.2, cut 2026-09-03.

No configuration schema change. Upgrading from 2.0.2 is an IMAGE_TAG bump to 2.0.3; nothing else moves. settings.yml, .env, prompts, and the databases are untouched.

Added

• Offside badge hover popover. The OFFSIDE badge on a symbol card keeps its label; hovering or focusing it now opens a plain-language explanation: which side of the band price is on and against which level, the anchor and spacing that define the band, how long, and the two exits (price returns, or re-anchor). The band is rebuilt from the grid state through the engine's own level math, never from open orders, so a parked symbol with an empty book still gets the full sentence; without a grid state or price it degrades to the duration. Reachable by keyboard and by tap.
• Dead-man's-switch streak logging names the deadline. The first failed reset of a streak logs, at WARNING, where Kraken's last confirmed auto-cancel deadline sits relative to now, and the 3-strike alert carries that timestamp in its context. This is the fact the 2026-09-03 post-mortem could not recover.

Full detail in CHANGELOG.md under [2.0.3] and in docs/planning/roadmap.md.