refactor(test): swap chai assertions for vitest's native expect

Replaces ~3,400 chai assertions across 170 test files with vitest's native
`expect` matchers. Unlocks vitest's diff rendering, snapshot testing, typed
matchers, and drops chai/chai-as-promised devDeps from pure-vitest packages.

## Conversions (mechanical, per a shared mapping)

- `to.equal` → `toBe`, `to.deep.equal` → `toEqual`
- `to.be.true/false/null/undefined` → `toBe(true/false)`, `toBeNull`, `toBeUndefined`
- `to.exist` → `toBeDefined` (each site verified — chai's .exist also checks truthy)
- `to.have.length(Of)(n)` → `toHaveLength(n)`
- `to.have.property(p[, v])` → `toHaveProperty(p[, v])`
- `to.match(/r/)` → `toMatch(/r/)`, `to.include`/`to.contain` → `toContain`
- `to.deep.include` → `toContainEqual` (arrays) or `toMatchObject` (objects)
- `to.throw(msg)` → `toThrow(msg)`
- `to.be.{greaterThan,at.least,at.most}` → `toBeGreaterThan(OrEqual)`, etc
- `to.be.closeTo(x, delta)` → `toBeCloseTo(x, precision)` (2 sites; delta→precision)
- `to.be.oneOf([...])` → swap sides: `expect([...]).toContain(x)`
- `to.be.empty` → `toHaveLength(0)`
- `to.be.a('type')` → `toBeTypeOf('type')`
- `to.be.instanceOf(C)` → `toBeInstanceOf(C)`
- `to.have.members(arr)` → `Set` equality
- `to.include.members(arr)` → `expect.arrayContaining(arr)`

## chai-as-promised

- `await expect(p).to.be.rejectedWith(msg)` → `await expect(p).rejects.toThrow(msg)`
- 4× chained `rejectedWith(Err).and.eventually.have.property(...)` in
  http-registry-server restructured into `rejects.toThrow(...)` + `try/catch`
  with `expect(err).toBeInstanceOf(...)` + `expect(err).toHaveProperty(...)`
- `.should.eventually.be.rejectedWith(...)` (1 site in infra/warp-configs) →
  `.rejects.toThrow(...)`
- All `chai.use(chaiAsPromised)` and `import chaiAsPromised` lines removed
- Shared root `vitest.setup.ts` deleted (only purpose was chai-as-promised
  registration); `setupFiles` references removed from 19 per-package configs

## Assertion messages

vitest matchers don't accept a 2nd-arg message; `expect(val, msg)` does.
Moved messages from `.toBeGreaterThanOrEqual(n, msg)` to
`expect(x, msg).toBeGreaterThanOrEqual(n)` in sdk multisigIsm, rebalancer-sim
full-simulation, infra gitleaks tests.

oxlint `jest/valid-expect` disabled for test files since vitest supports the
2-arg expect signature that jest doesn't. Also disabled `no-conditional-expect`,
`require-to-throw-message`, `no-standalone-expect` — these jest plugin rules
are style-level, don't apply to vitest idioms in this codebase, and start
firing because `expect().toBe()` now looks like jest syntax.

## expect.fail()

22 occurrences in rebalancer LiFiBridge.test.ts (inside try/catch blocks),
plus a handful elsewhere → `throw new Error(msg)`. In .then() callbacks
(cli create-altvm-signers.test.ts) rendered as
`.then(() => { throw new Error(msg) })`.

## devDeps cleanup

Pure-vitest packages had `chai`, `chai-as-promised`, `@types/chai`,
`@types/chai-as-promised`, `@types/sinon-chai` removed from devDependencies:
ccip-server, deploy-sdk, fee-quoting, github-proxy, http-registry-server,
keyfunder, metrics, provider-sdk, rebalancer-sim, utils, warp-monitor.

Hybrid packages KEEP chai devDeps for hardhat/e2e suites:
cli, infra, rebalancer, relayer, sdk, plus starknet-sdk/svm-sdk/tron-sdk/
radix-sdk/cosmos-sdk/aleo-sdk/helloworld whose e2e or hardhat paths stay on
mocha.

Root `package.json` drops chai/chai-as-promised/vitest devDeps (only added
in the previous PR to support the shared setup file).

Catalog: `chai`, `chai-as-promised`, `sinon` entries retained — still used
by hardhat/e2e test paths across the monorepo.

## Tests

~2,100 tests green across the migrated vitest suites. `pnpm build` at the
root passes. `pnpm format:check` + `pnpm lint` pass. Full `pnpm test:ci`
deferred to CI.

Author: paulbalaji

oxlint.json

@@ -122,7 +122,11 @@
       ],
       "rules": {
         "no-console": "off",
-        "no-unused-expressions": "off"
+        "no-unused-expressions": "off",
+        "jest/valid-expect": "off",
+        "jest/no-conditional-expect": "off",
+        "jest/require-to-throw-message": "off",
+        "jest/no-standalone-expect": "off"
       }
     },
     {

package.json

@@ -26,8 +26,6 @@
     "@changesets/cli": "^2.26.2"
   },
   "devDependencies": {
-    "chai": "catalog:",
-    "chai-as-promised": "catalog:",
     "husky": "^8.0.0",
     "lint-staged": "^15.5.2",
     "oxfmt": "catalog:",
@@ -36,8 +34,7 @@
     "prettier": "catalog:",
     "prettier-plugin-solidity": "catalog:",
     "tsx": "catalog:",
-    "turbo": "^2.8.11",
-    "vitest": "catalog:"
+    "turbo": "^2.8.11"
   },
   "packageManager": "pnpm@10.30.2",
   "pnpm": {

pnpm-lock.yaml

@@ -49,15 +49,13 @@
   },
   "devDependencies": {
     "@hyperlane-xyz/tsconfig": "workspace:^",
-    "@types/chai": "catalog:",
     "@types/cors": "^2",
     "@types/express": "^4.17.1",
     "@types/node": "catalog:",
     "@types/pg": "^8.16.0",
     "@types/pino-http": "^5.8.4",
     "@types/sinon": "catalog:",
     "@vercel/ncc": "catalog:",
-    "chai": "catalog:",
     "nodemon": "^3.0.3",
     "pino-pretty": "catalog:",
     "sinon": "catalog:",