📜 Scribe: Updated Technical ARCHITECTURE.md

[google-labs-jules]

🔄 Drift Detected: New structural boundaries and features (packages/shared/src/seasonPairs.ts and packages/bot/src/core/discordAdapters.ts) were added but missing from the architecture breakdown. Also exported the missing SeasonPairs type from @mythicplus/shared to fix frontend compilation.
📄 Docs Updated: [ARCHITECTURE.md]
💎 Note for Showcase: No new links to add to the README.

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PR created automatically by Jules for task 5672010854980755213 started by @TytaniumDev

[google-labs-jules]

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