chore: update deps and remove bun lockfile

[gavin-openops]

/claim #79

Updates made:

• bumped dependencies to latest available versions in package.json (including circuit-json/tscircuit ecosystem packages)
• removed committed bun.lock
• ensured bunfig.toml has lockfile saving disabled ([install.lockfile] save = false)
• ignored bun.lock in .gitignore
• added missing @react-hook/resize-observer dependency required after upgrades

Verification:

• npm install --no-package-lock --legacy-peer-deps
• npm run build (failed initially: missing @react-hook/resize-observer)
• npm install --no-package-lock --legacy-peer-deps @react-hook/resize-observer@latest
• NODE_OPTIONS=--max-old-space-size=8192 npm run build (passes)
• npx vercel build --yes (blocked: invalid Vercel token in this environment)

Notes:

• Vercel CLI could not be fully verified here due to auth (The specified token is not valid). Local production build is passing.

[vercel]

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