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-cordis-catalog.ts

@@ -209,6 +209,7 @@ const FOUNDATION_TYPE_NAMES = new Set([
   'AsyncIterable',
   'Context',
   'Error',
+  'Partial',
   'Pick',
   'Promise',
   'Readonly',
@@ -237,6 +238,7 @@ const TYPE_LINK_EXEMPTIONS: Readonly<Record<string, string>> = {
   SessionProjectionMap: 'merge-extensible projection key map is owned by packages/session-projection/session-projection/src/types.ts',
   ProjectionChangeListener: 'change-feed listener contract is owned by packages/session-projection/session-projection/src/index.ts',
   ProjectionSnapshot: 'watermark snapshot shape is owned by packages/session-projection/session-projection/src/index.ts',
+  ProjectionCheckpoint: 'persisted checkpoint row map is owned by packages/session-projection/session-projection/src/index.ts',
   CommandExecution: 'executor return contract is owned by packages/ui/commands/src/index.ts',
   InvariantInstaller: 'service-local contribution contract is owned by packages/support/invariants/README.md',
   LocaleDict: 'service-local dictionary shape is owned by packages/client/i18n/src/index.ts',