Custom connections are gone: the CLI talks to the LLeMbas server it is logged in to

LLeMbas CLI 2.0 is LLeMbas-server-specific (CLI rule 2). Removed: the
anthropic, gemini, ollama and responses clients, context discovery and
llama-swap unloading (discover.ts), the Connection schema with its dialect,
auth, key_cmd, discover, unload_url and one_model_at_a_time, the model
`fallback` (it only ever moved to another server), effort_map and cache, and
the multi-connection refs. Kept: openai-chat, http, sse, think, effort,
tokens and all of src/lembas.

- connections.yaml holds the login (`type: webui`, as lembas login writes
  it). A custom entry from 1.x is read past with a warning that says how to
  log in, so an old file still starts; with several logins left, the latest
  is used and the others named.
- A model's ref is the id the server serves it under; the older forms
  (`<login>/<id>`, `<login>/<model>`) still resolve and config.yaml is
  rewritten once. Without a login there is no model, and the error (and the
  first-run screen, now the sign-in alone) says `lembas login <address>`.
- A login to another server signs this machine out of the previous one.
- The window is the server's word (no discovery); a capacity group comes
  from the server's `capacity.group` alone; embeddings use the server's
  /v1/embeddings.
- `lembas models` lists the server's models; install.sh's starter files, the
  README and the JSON schemas say the same.

Tests: every fixture is a login now (the fake server lists models, answers
other GETs with 404, and can hand one model to another script, as a server
with several backends); the dialect suites and the cross-connection tests are
gone with their code.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/acp-jobs.test.ts

@@ -34,14 +34,11 @@ function pair(): [Transport, Transport] {
   return [side(a, b), side(b, a)]
 }
 
-/** The parent's model on `f`; a second connection `g` for a subagent's model, when given. */
-function config(url: string, childUrl?: string) {
+/** The parent's model `f/m`; `g/m` for a subagent, when its own script is given (the fake server
+ *  routes it there). */
+function config(url: string, child?: boolean) {
   mkdirSync(paths.config, { recursive: true })
-  writeFileSync(
-    join(paths.config, "connections.yaml"),
-    `connections:\n  f:\n    dialect: openai-chat\n    base_url: ${url}\n    models: { m: {} }\n${childUrl ? `  g:\n    dialect: openai-chat\n    base_url: ${childUrl}\n    models: { m: {} }\n` : ""}`,
-    { mode: 0o600 },
-  )
+  writeFileSync(join(paths.config, "connections.yaml"), `connections:\n  f:\n    type: webui\n    url: ${url}\n    models: { f/m: {}${child ? ", g/m: {}" : ""} }\n`, { mode: 0o600 })
   writeFileSync(join(paths.config, "config.yaml"), "model: f/m\nmode: auto\n")
 }
 
@@ -145,14 +142,14 @@ test("job/stop stops a command and answers once it has; the -32602 cases: a comm
 }, SLOW)
 
 test("a background subagent: its transcript as history turns; send to a finished one starts it again under the same id", async () => {
+  const child = (other = fakeProvider([{ chunks: [delta({ content: "calc.py:2 divides by len(v) - 1." })] }, { chunks: [delta({ content: "The tests cover it." })] }]))
   fake = fakeProvider([
     { chunks: [toolCall(0, "t1", "task", JSON.stringify({ description: "find the bug", prompt: "Find why average is wrong", model: "g/m", background: true }))] },
     { chunks: [delta({ content: "Started it." })] },
     { chunks: [delta({ content: "Got the report." })] },
     { chunks: [delta({ content: "Got the second report." })] },
-  ])
-  other = fakeProvider([{ chunks: [delta({ content: "calc.py:2 divides by len(v) - 1." })] }, { chunks: [delta({ content: "The tests cover it." })] }])
-  config(fake.url, other.url)
+  ], { route: (model) => (model.startsWith("g/") ? child : undefined) })
+  config(fake.url, true)
   const { c, events, sid } = await client()
   await c.request("session/prompt", { sessionId: sid, prompt: [{ type: "text", text: "go" }] })
   expect(await until(() => events.some((e) => e.type === "job" && e.state === "end"))).toBe(true)