docs: regenerate catalogs and graphs for the projection-cache seam; classify its types

gen-cordis-catalog/api, config and persistence catalogs, and doc graphs
regenerated over the new sessionProjectionCache service and the registry's
checkpoint faces. Classifications: ProjectionCheckpoint joins the type-link
exemptions (owned by the projection package source), Partial joins the
foundation names, the cache service gets its capability-seam role row, and
the package takes the one-sentence Model Experience contract (host-side
read-model accelerator, no model surface).

scripts/gen-doc-graphs.ts

@@ -244,6 +244,14 @@ const SERVICE_ROLES: ServiceRole[] = [
     consumers: ['tool-todo', 'session-title', 'host-apiproxy'],
     note: 'Domains register state-driven fold units; the eager drive keeps per-session watermark states and api-proxy serves baselines and pushes changed values.',
   },
+  {
+    key: 'sessionProjectionCache',
+    pkg: 'session-projection-cache',
+    title: 'Persisted projection cache',
+    mode: 'core',
+    consumers: ['host-apiproxy'],
+    note: 'Durably checkpoints projection unit states per session (throttled + turn/end/detach mandatory points) and serves the cold-read ladder: cache row + persistence tail replay, so listings never load full logs.',
+  },
   {
     key: 'tui',
     pkg: 'tui',