Patch Changes

• fix: error at compile time on duplicate snippet/declaration tag definitions (#18351)

• fix: parse declaration tag contents more robustly (#18353)

• fix: correctly transform references to earlier declarators in a declaration tag (e.g. {let a = $state(0), b = $derived(a * 2)}) (#18348)

• fix: avoid spurious state_referenced_locally warnings for $derived declarations in declaration tags (#18348)

• fix: tolerate whitespace before let/const in declaration tags (#18348)

• fix: prevent infinite loop when a tag's expression ends with a trailing / at the end of the input (#18350)

• fix: more robust parsing of declaration tags with regards to type (#18330)

• fix: preserve newlines in spread input values when the type attribute is applied after value (#18345)

• fix: update SvelteURLSearchParams when setting duplicate keys to the same joined value (#18336)

• fix: check references for blockers on server, too (#18352)