site: Sync missing changes from prod + new updates

[AniLeo]

• .htaccess: Add redirect from /blog to the subdomain
• site: Sync missing changes from prod
• .editorconfig: Add initial editorconfig
• .gitattributes: Add initial gitattributes
• .gitignore: Remove obsolete entries
• update: Add update API file call
• patreon: Use relative URL
• menu: Move out of place wordpress code to the blog
• workflows: Update phpstan workflow
• latest-appimage: Remove deprecated redirect
• latest: Throw if compat plugin is missing
• meta: Update keywords to mention x64, arm64
• download: Update linux CLI instructions
• freebsd: Update supported versions
• quickstart: Remove windows 10 recommendation
• quickstart: Update storage requirements
• quickstart: Update Linux versions
• quickstart: Update min macOS version to 14.4
• menu: Remove obsolete inform msg code
• index: Reduce ad block height and padding
• site: Fix HTML spec errors/warnings
• js: Fix ImageCycler errors on non-RPCN pages
• site: Fix more HTML spec errors
• html: Restore video carousel div hack
• download: Enable Windows arm64 builds
• home: Add 2025 highlights showcase video
• download: Update example RPCS3 windows path
• quickstart: Move emulator UI to FAQ
• quickstart: Simplify installing PS3 system software instructions
• faq: Revamp FAQ, remove unnecessary info and update some answers
• quickstart: Move manual updating to FAQ, split software requirement instructions
• quickstart: Revamp the sidebar to be more concise

[rxhfcy]

Random nitpicks:

While you're at it, could macOS supported versions also be changed to
"macOS 14.4 or later"?

(instead of "macOS 14.3+, 15.0+ or later")

• using the weird nonstandard "+" notation seems redundant and needlessly confusing to casual users ("+" seems to just mean "or later", which is already spelled out)
• minimum seems to be 14.4 now (since rpcs3 commit 1147f47)
• mentioning macOS 15 seems redundant: "14.4 or later" already includes 15, 26 etc

[AniLeo]

We don't officially support/recommend macOS 26 yet. Some users claim there are some issues that only happen on it. It needs to be validated.