chore: drop unused tooling and lint exceptions

Removes the leftover prettier config and ambient declaration (oxfmt has
been the formatter since the prior switch), drops the @ts-morph/common
devDep that nothing imports, points the make pretty target at oxlint
instead of the missing eslint binary, and drops the unicorn
nested-ternary rule now that the codebase uses iife blocks for branching
instead.

Author: maxholman

.oxlintrc.json

@@ -10,7 +10,6 @@
 	"rules": {
 		"typescript/no-non-null-assertion": "error",
 		"no-nested-ternary": "error",
-		"unicorn/no-nested-ternary": "error",
 		"import/no-named-as-default": "error",
 		"max-lines-per-function": "off",
 		"func-style": ["error", "declaration", { "allowArrowFunctions": true }],

Makefile

@@ -64,5 +64,5 @@ docker: __tests__/fixtures/docker.json
 
 .PHONY: pretty
 pretty: node_modules
-	pnpm exec eslint --fix . || true
+	pnpm exec oxlint --fix . || true
 	pnpm exec oxfmt --write .

lib/prettier.d.ts

@@ -31,7 +31,6 @@
 	"devDependencies": {
 		"@block65/custom-error": "^14.0.0",
 		"@block65/rest-client": "^12.1.1",
-		"@ts-morph/common": "^0.29.0",
 		"@tsconfig/node24": "^24.0.4",
 		"@tsconfig/strictest": "^2.0.8",
 		"@types/node": "^25.6.0",