Life Support - Druid Edition

# LifeSupport Druid 0.2.22 — TBC Anniversary

- Adds the missing LOW HEALTH warning (25% default).
- Shows low mana in all forms, including the mana available for returning to caster form.
- Adds LOW ENERGY in Cat Form and LOW RAGE in Bear/Dire Bear Form during combat only, each with a 20% default threshold. Zero disables the corresponding resource warning.
- Displays multiple active warnings together and collapses unused rows.
- Adds health/rage/energy threshold sliders and separate text colors in Warning appearance. Mana uses the existing main-options threshold slider.
- Preview shows all four warning types. Saved position, background appearance, drag controls and addon-network discovery are retained.
- Resource additions are visual warnings; this release does not add rage/energy sounds or group announcements.

Validation: Lua 5.1 syntax, simulated health/mana/rage/energy states, form/resource filtering, out-of-combat suppression, recovery, death, disabled thresholds, zero maximums and actual warning-driver row rendering passed. Archive/TOC verified. Live UI and form transitions still require in-game testing.