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

doc-forge/mcp/nav.json

@@ -0,0 +1,90 @@
+[
+  {
+    "module": "docforge",
+    "resource": "doc://modules/docforge"
+  },
+  {
+    "module": "docforge.cli",
+    "resource": "doc://modules/docforge.cli"
+  },
+  {
+    "module": "docforge.cli.commands",
+    "resource": "doc://modules/docforge.cli.commands"
+  },
+  {
+    "module": "docforge.cli.main",
+    "resource": "doc://modules/docforge.cli.main"
+  },
+  {
+    "module": "docforge.cli.mcp_utils",
+    "resource": "doc://modules/docforge.cli.mcp_utils"
+  },
+  {
+    "module": "docforge.cli.mkdocs_utils",
+    "resource": "doc://modules/docforge.cli.mkdocs_utils"
+  },
+  {
+    "module": "docforge.loaders",
+    "resource": "doc://modules/docforge.loaders"
+  },
+  {
+    "module": "docforge.loaders.griffe_loader",
+    "resource": "doc://modules/docforge.loaders.griffe_loader"
+  },
+  {
+    "module": "docforge.models",
+    "resource": "doc://modules/docforge.models"
+  },
+  {
+    "module": "docforge.models.module",
+    "resource": "doc://modules/docforge.models.module"
+  },
+  {
+    "module": "docforge.models.object",
+    "resource": "doc://modules/docforge.models.object"
+  },
+  {
+    "module": "docforge.models.project",
+    "resource": "doc://modules/docforge.models.project"
+  },
+  {
+    "module": "docforge.nav",
+    "resource": "doc://modules/docforge.nav"
+  },
+  {
+    "module": "docforge.nav.mkdocs",
+    "resource": "doc://modules/docforge.nav.mkdocs"
+  },
+  {
+    "module": "docforge.nav.resolver",
+    "resource": "doc://modules/docforge.nav.resolver"
+  },
+  {
+    "module": "docforge.nav.spec",
+    "resource": "doc://modules/docforge.nav.spec"
+  },
+  {
+    "module": "docforge.renderers",
+    "resource": "doc://modules/docforge.renderers"
+  },
+  {
+    "module": "docforge.renderers.base",
+    "resource": "doc://modules/docforge.renderers.base"
+  },
+  {
+    "module": "docforge.renderers.mcp_renderer",
+    "resource": "doc://modules/docforge.renderers.mcp_renderer"
+  },
+  {
+    "module": "docforge.renderers.mkdocs_renderer",
+    "resource": "doc://modules/docforge.renderers.mkdocs_renderer"
+  },
+  {
+    "module": "docforge.servers",
+    "resource": "doc://modules/docforge.servers"
+  },
+  {
+    "module": "docforge.servers.mcp_server",
+    "resource": "doc://modules/docforge.servers.mcp_server"
+  }
+]