Merge origin/master: settings seam lands beside web plan mode

Conflicts were the parallel-edit set: packages/README group table (kept
master's session-title wording, re-added the settings row condensed),
doc-budgets AGENTS.md ceiling (took master's 1750), and regenerated
graph/catalog docs plus re-recorded translation pairs. packages/README.md
ceiling 845 -> 850: the table legitimately gained one row for the new
settings group and the row is already minimal.

scripts/gen-doc-graphs.ts

@@ -245,6 +245,22 @@ const SERVICE_ROLES: ServiceRole[] = [
     consumers: ['tui'],
     note: 'Plugins register direct human commands; TUI consumes the effective per-agent catalog without sending invocations to the model.',
   },
+  {
+    key: 'sessionProjections',
+    pkg: 'session-projection',
+    title: 'Session projection units',
+    mode: 'core',
+    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',