ptBR: Forever Essentials, swing timer, Group Finder options, bulk buy and more

[Barbiero]

Summary

• Translates the new Forever Essentials options (fishing key, bobber indicator, fishing sounds, auto summon pet, per-character favorites, most valuable reward, zone levels)
• Swing Timer Attack State and Movement Guide options
• Group Finder options page, Merchant Bulk Buy, pandemic borders for raid frames, Also Show Below, and low bag-space visibility
• Spell names taken from the official Forever Portuguese (Brazil) data
• Regenerates the static locale key list

Test plan

• File compiles and loads; added keys read back with the expected values
• Checked every added key for duplicates, malformed lines and matching format specifiers
• Repository guardrails pass