docs: mark Model Router retired, superseded by Prism in Chromeria

AGENTS.md

@@ -2,13 +2,20 @@
 
 Follow the installed AgentsMD global contract.
 
-- Final PR merges stay with the user. After the user merges, Delivery
-  Authority for this repository includes, without another prompt: the
-  resulting GitHub release through the release workflow, and installing that
-  released version on the maintainer's local hosts once Toolybara promotes it
-  to the marketplace (today the Codex plugin that Chromeria's Prism runs:
-  `codex plugin marketplace upgrade`, then
-  `codex plugin add model-router@toolboxmd`), with post-install verification
-  (`bin/model-router --version` in the installed plugin root) and an entry in
-  the maintainer's runbook. Third-party publication still needs explicit
+This repository is retired: Chromeria's Prism absorbed Model Router. Make no
+further releases or installs.
+
+- Final PR merges stay with the user. Merging grants no release or install
   authority.
+
+## Connected projects
+
+Chromeria's `GLOSSARY.md` is the system glossary for Chromeria, AgentsMD,
+Agent Observer and ContextMD.
+
+| Project | Repository | Glossary |
+| --- | --- | --- |
+| Chromeria (system glossary) | `toolboxmd/chromeria` | [`GLOSSARY.md`](https://github.com/toolboxmd/chromeria/blob/main/GLOSSARY.md) |
+| AgentsMD | `toolboxmd/agentsmd` | [`GLOSSARY.md`](https://github.com/toolboxmd/agentsmd/blob/main/GLOSSARY.md) |
+| Agent Observer | `toolboxmd/agent-observer` | [`GLOSSARY.md`](https://github.com/toolboxmd/agent-observer/blob/main/GLOSSARY.md) |
+| ContextMD | `toolboxmd/contextmd` | [`GLOSSARY.md`](https://github.com/toolboxmd/contextmd/blob/main/GLOSSARY.md) |

GLOSSARY.md

@@ -2,6 +2,11 @@
 
 Canonical terms for Model Router. One term per concept; avoid the synonyms.
 
+Model Router is retired. Terms shared across the user's system, such as task,
+harness, planner, Prism, lane and worker, are defined in Chromeria's system
+glossary, [`toolboxmd/chromeria` `GLOSSARY.md`](https://github.com/toolboxmd/chromeria/blob/main/GLOSSARY.md).
+The table below describes the last release, 0.44.1, in the words it used then.
+
 | Term | Definition | Avoid |
 | --- | --- | --- |
 | Job | One accepted request in the runner, identified by its request id. Several jobs may contribute to one Observer task through `observer_task_id`. | task (in runner code) |

README.md

@@ -1,5 +1,11 @@
 # Model Router
 
+> **Retired.** Model Router is superseded by Prism in
+> [Chromeria](https://github.com/toolboxmd/chromeria), which routes delegated
+> work itself ([note](https://github.com/toolboxmd/chromeria/blob/main/docs/fork.md#absorbed-projects)).
+> The T3 routes this runner calls no longer exist, so it cannot run. The
+> repository is archived; the text below describes the last release, 0.44.1.
+
 The runtime behind Prism in Chromeria (the T3 Code fork). A planner thread
 hands an authorized task to the durable runner, and a dispatcher carries it
 through worker threads to one open PR. Every turn runs as a T3 child thread