feat: serve docs flat at /<repo>/ with no redirects

- collect.py copies each repo's built site contents directly to a
  top-level <repo>/ dir (was libs|apis|wiki/<repo>/site nesting)
- nginx uses `index index.html lib/index.html api/index.html` so
  /dagpipe/ -> lib/index.html, /auth-server/ -> api/index.html are
  served internally with no redirects
- _index regenerates links against the flat layout
  (/dagpipe/lib/, /auth-server/api/, /mongo-ops/, /blog/...)
- config.yml static entries point at vendored blog/ + media-manager/
- Dockerfile copies per-repo dirs flat into the nginx html root
- removed stale libs/, apis/, wiki/, tutorials/ category trees

openapi-first/mcp/modules/openapi_first.templates.vet_app.sse.json

@@ -0,0 +1,44 @@
+{
+  "module": "openapi_first.templates.vet_app.sse",
+  "content": {
+    "path": "openapi_first.templates.vet_app.sse",
+    "docstring": null,
+    "objects": {
+      "asyncio": {
+        "name": "asyncio",
+        "kind": "alias",
+        "path": "openapi_first.templates.vet_app.sse.asyncio",
+        "signature": "<bound method Alias.signature of Alias('asyncio', 'asyncio')>",
+        "docstring": null
+      },
+      "random": {
+        "name": "random",
+        "kind": "alias",
+        "path": "openapi_first.templates.vet_app.sse.random",
+        "signature": "<bound method Alias.signature of Alias('random', 'random')>",
+        "docstring": null
+      },
+      "json": {
+        "name": "json",
+        "kind": "alias",
+        "path": "openapi_first.templates.vet_app.sse.json",
+        "signature": "<bound method Alias.signature of Alias('json', 'json')>",
+        "docstring": null
+      },
+      "subscribe": {
+        "name": "subscribe",
+        "kind": "function",
+        "path": "openapi_first.templates.vet_app.sse.subscribe",
+        "signature": "<bound method Function.signature of Function('subscribe', 33, 37)>",
+        "docstring": null
+      },
+      "unsubscribe": {
+        "name": "unsubscribe",
+        "kind": "function",
+        "path": "openapi_first.templates.vet_app.sse.unsubscribe",
+        "signature": "<bound method Function.signature of Function('unsubscribe', 40, 48)>",
+        "docstring": null
+      }
+    }
+  }
+}