[dangreen]

Supersedes #273.

• @nano_kit/preact, @nano_kit/preact-router and @nano_kit/preact-ssr support Preact 11 next to Preact 10: the peer range is ^10.0.0 || ^11.0.0. The workspace develops and tests on Preact 11.
• Preact 11 types <a> props as a union that ties role to href, so the <a> of Link, which forwards AnchorHTMLAttributes, no longer type-checks. Its href gets a @ts-expect-error with the reason. Casting the spreads instead passes tsc but trips no-unnecessary-type-assertion, which checks each spread on its own. LinkProps stays as is, and the emitted JS is the same.
• The Event Board example moves to Preact 11. With Preact 10 left there, the example and the workspace packages loaded two copies of Preact, and its integration tests timed out.
• preact-render-to-string is ^6.8.1 in the catalog and in the example: Preact 11 declares >=6.7.0 as its peer. @nano_kit/preact-ssr only calls the synchronous render, so the streaming API change of 6.8 does not touch it.

Size: the All publics bundles of @nano_kit/preact (720 B gzip, 662 B brotli) and @nano_kit/preact-router (1569 B gzip, 1469 B brotli) match main to the byte: Preact stays external, and the Link fix is type-only. The documented size tables have no Preact rows, so nothing there needs a new measurement.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.62%. Comparing base (a444406) to head (8a95621).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #302      +/-   ##
==========================================
+ Coverage   83.60%   83.62%   +0.02%     
==========================================
  Files         228      228              
  Lines        4849     4849              
  Branches     1074     1074              
==========================================
+ Hits         4054     4055       +1     
+ Misses        554      553       -1     
  Partials      241      241              

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