refactor(session): fold the session family into packages/session/

git mv the 12 packages from session-persistence/, session-projection/,
session-title/, and telemetry/ into one session/ group per the
regrouping RFC; merge the four group READMEs into one bilingual
triplet; rewrite the group segment in tsconfig references (intra-group
references shorten to ../<pkg>), tsconfig.base.json paths/globs,
knip.json keys, vitest include, gate scripts, and authored doc/note
citations; regenerate module graph, doc graphs, catalogs, and the
lockfile importer keys. No npm names change.

Full unit suite: 8779 passed; the 18 reported failures reproduce as
env flakes (ambient-proxy IPv6 tunneling, watched-dir inotify
timeouts under parallel load) — each passes in isolation with
NO_PROXY set, matching their known pre-existing behavior on master.

packages/ui/jsonrpc/tests/built-scope-carrier.e2e.ts

@@ -35,7 +35,7 @@ const [
   load("vendor/cordis/lib/index.js"),
   load("packages/examples/agent-spine-demo/lib/index.js"),
   load("packages/subagent/subagent/lib/index.js"),
-  load("packages/session-persistence/session-persistence-jsonl/lib/index.js"),
+  load("packages/session/session-persistence-jsonl/lib/index.js"),
   load("packages/ui/jsonrpc/lib/index.js"),
   load("packages/core/session/lib/index.js"),
 ]);

packages/ui/permission/tsconfig.json

@@ -36,7 +36,7 @@
       "path": "../../support/invariants"
     },
     {
-      "path": "../../session-projection/session-projection"
+      "path": "../../session/session-projection"
     },
     {
       "path": "../../settings/settings"