[Bug]: Custom spells outside CC_TYPE never announce

[Xerrion]

Problem

The README advertises "Custom spells - Add any spell ID." However, Listeners/AuraListener.lua:142-145 has an early if not CC_TYPE[spellId] then return end that short-circuits before the custom-spell dispatch at line 187. Any spellId not in the hard-coded CC_TYPE table never reaches AnnounceCustom.

Result: custom spells are silently ineffective unless they happen to also be in the built-in CC list.

Proposed Solution

Move the custom-spell dispatch path before the CC_TYPE filter, OR introduce a dedicated CustomSpellListener that registers its own SPELL_AURA_APPLIED + SPELL_CAST_SUCCESS handlers (so custom spells are not tied to CC semantics at all).

Alternatives

• Document the limitation: "custom spells must also be CC-type debuffs."
• Auto-add user custom spells into CC_TYPE at runtime with a generic type label.

Open Questions (need design discussion)

• What event types should custom spells support?
• Should they also support buffs (HELPFUL), or only debuffs?
• Should they support SPELL_CAST_SUCCESS for instant cast announcements?

Acceptance Criteria

• A custom spellId that is not in CC_TYPE successfully announces when applied.
• Documentation clarifies which event types are supported for custom spells.
• No regression in existing CC announcements.