feat(tools): add blake3 hash tool

[rwv]

Summary

• add a BLAKE3 hash text/file tool with configurable output length and keyed hashing
• document BLAKE3 and wire the tool into the registry
• add DOM tests for tool exports and view rendering

Testing

• pnpm test:unit

Screenshots

• not provided

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	85.35%	9299 / 10895
🔵	Statements	83.79%	10260 / 12244
🔵	Functions	84.67%	3481 / 4111
🔵	Branches	72.35%	4527 / 6257

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
tools/hash/blake3-hash-text-or-file/src/Blake3HashTextOrFileView.vue	40.62%	33.33%	60%	46.42%	47-69, 8, 11
tools/hash/blake3-hash-text-or-file/src/WhatIsBlake3.vue	0%	100%	100%	0%	12-4
tools/hash/blake3-hash-text-or-file/src/index.ts	100%	100%	100%	100%
tools/hash/blake3-hash-text-or-file/src/info.ts	100%	100%	100%	100%
tools/hash/blake3-hash-text-or-file/src/routes.ts	50%	100%	0%	50%	7

Generated in workflow #857 for commit a8722ae by the Vitest Coverage Report Action