feat: mockly-hono — file-based mock API server (Hono)

File path = route. JSON/JSON5, dynamic .ts handlers + faker, templating,
stateful CRUD (pagination/sort/persist), __variants, sequence, chaos,
rate-limit, auth, validation, per-route + global proxy/record, splat routes,
X-Scenario overlays, SSE. Visual docs (Scalar) at /__docs from a live
OpenAPI 3 spec. OpenAPI import script. Zero-build via tsx.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

routes/__test/tpl/echo.json

@@ -0,0 +1,8 @@
+{
+  "feature": "request data — query + headers",
+  "search": "you searched: {{query.q}}",
+  "page": "{{query.page}}",
+  "userAgent": "{{headers.user-agent}}",
+  "tier": "{{headers.x-tier}}",
+  "unresolved": "{{query.missing}} stays literal if absent"
+}