TimeManager v2.0.0

Major version reset. Same code as previously published v2.12.3 — this release just renumbers the versioning so future development starts from a clean 2.0.0 baseline.

What's in 2.0.0

• Seasons engine — day and night length sweep through the year. Six latitude-style presets (Equatorial, Mediterranean, Temperate, Subarctic, Arctic, Custom), hemisphere switch, sinusoidal sweep between solstices, configurable year length (default 32 MC days). Off by default; opt in with seasons.enabled: true.
• /tm gui — three-page admin panel with click feedback. Aliases: /tm admin, /tm panel, /tm menu, /tm settings.
• /tm season — console admin: status | enable | disable | preset <NAME> | year <days> | apply | list.
• 10 GUI languages — English, Turkish, German, Spanish (ES/MX), French, Italian, Dutch, Portuguese, Hebrew.
• Five season placeholders — %tm_season%, %tm_season_preset%, %tm_season_dayofyear%, %tm_season_daylight%, %tm_season_hemisphere%.
• /now season suffix in chat when seasons are enabled (overworld only).
• Smart /time routing — vanilla /time set goes through TimeManager for consistent chat output.

Existing 1.12.2 configs load unchanged. Drop in, restart.