Merge remote-tracking branch 'origin/master' into codex/rfc-subagent-background-tasks

Adopts #220 (tool-cordis + the gen-cordis-api gate: the runtime API
catalog regenerated with ctx.tasks/onCleanup on it) and #225 (shared
transcript renderer). Tool-catalog expectations take the union
(cordis_* + task_*); packages/README budget adopts master's 660
ceiling, which absorbs both new group rows.

tsconfig.json

@@ -73,6 +73,7 @@
     { "path": "./packages/tasks/tool-tasks" },
     { "path": "./packages/todo/tool-todo" },
     { "path": "./packages/guard/repeat-tool-guard" },
+    { "path": "./packages/cordis/tool-cordis" },
     { "path": "./packages/hooks/hook-protocol" },
     { "path": "./packages/hooks/hooks-claude" },
     { "path": "./packages/hooks/hooks-codex" }