Refactor session into runtime, log, fold, reconcile, and wire

CLAUDE.md

@@ -12,20 +12,21 @@ the room goes quiet.
 
 pnpm workspace, Node >= 22.19, ESM only, TypeScript.
 
-| Path                | What                                                                                   |
-| ------------------- | -------------------------------------------------------------------------------------- |
-| `packages/ambion`   | The runtime. One file per concern, in layers Biome holds; `session.ts` composes them   |
-| `packages/cli`      | The `ambion` binary                                                                    |
-| `docs/agent.md`     | Design contract for the core — read before changing the runtime                        |
-| `docs/exchange.md`  | Design contract for the exchange, the room's unit of work — read with `agent.md`       |
-| `docs/presence.md`  | Design contract for presence and visits — read with `agent.md`                         |
-| `docs/assistant.md` | Design contract for the assistant, the room's counterpart to the people in it          |
-| `docs/workspace.md` | Design contract for the workspace an agent's tools reach into — read with `agent.md`   |
-| `docs/roster.md`    | Design contract for a roster that changes while the room runs — read with `agent.md`   |
-| `docs/toolchain.md` | Build, CI, release — read before changing `.github/`, `scripts/`, root configs         |
-| `examples/site`     | Runnable example                                                                       |
-| `demos/`            | One dated report per merged change — regenerate on the branch, then leave it           |
-| `planning/`         | `backlog.md` holds the debt in what is built and the work deferred; `next.md` the five |
+| Path                  | What                                                                                        |
+| --------------------- | ------------------------------------------------------------------------------------------- |
+| `packages/ambion`     | The runtime. One file per concern, in layers Biome holds; `session.ts` composes them        |
+| `packages/cli`        | The `ambion` binary                                                                         |
+| `packages/cloudflare` | The room as Cloudflare Durable Objects: private, tested inside workerd, deployed by nothing |
+| `docs/agent.md`       | Design contract for the core — read before changing the runtime                             |
+| `docs/exchange.md`    | Design contract for the exchange, the room's unit of work — read with `agent.md`            |
+| `docs/presence.md`    | Design contract for presence and visits — read with `agent.md`                              |
+| `docs/assistant.md`   | Design contract for the assistant, the room's counterpart to the people in it               |
+| `docs/workspace.md`   | Design contract for the workspace an agent's tools reach into — read with `agent.md`        |
+| `docs/roster.md`      | Design contract for a roster that changes while the room runs — read with `agent.md`        |
+| `docs/toolchain.md`   | Build, CI, release — read before changing `.github/`, `scripts/`, root configs              |
+| `examples/site`       | Runnable example                                                                            |
+| `demos/`              | One dated report per merged change — regenerate on the branch, then leave it                |
+| `planning/`           | `backlog.md` holds the debt in what is built and the work deferred; `next.md` the five      |
 
 ## Thesis
 
@@ -59,6 +60,7 @@ pnpm install
 pnpm check     # build, typecheck, lint, test — the gate CI runs
 pnpm format    # biome --write, then prettier --write
 pnpm test:live # the room on a real model; needs <PROVIDER>_API_KEY and costs money
+pnpm chaos     # the crash sweep on both storages, the kill at every third write, 200 seeds of the walk
 ```
 
 Run `pnpm format` and `pnpm check` before every push. CI runs the same gate.