CHANGELOG: [Unreleased] for 2.0

What a user sees change: the CLI uses the server it is logged in to and
nothing else, models by their served names, memory on the server, stacked
instruction files, short tool results that are never rewritten, recall and
show, link protocol 3, and a chat's model or a refusal.

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

CHANGELOG.md

@@ -6,6 +6,47 @@ All notable changes to LLeMbas CLI. The format follows
 
 ## [Unreleased]
 
+LLeMbas CLI 2.0 works with LLeMbas 2.0 and nothing else: it uses the server it is logged in to,
+keeps tool results short without ever rewriting what the model has already read, and reads every
+instruction file on the way down to where it was started. Harness spec 3.0.0.
+
+### Changed
+
+- **The CLI talks only to the LLeMbas server it is logged in to.** Custom connections are gone:
+  the OpenAI-compatible, Responses, Anthropic, Gemini and Ollama connections in `connections.yaml`,
+  with their `dialect`, `key_cmd`, `auth`, `discover`, `unload_url` and `one_model_at_a_time`,
+  and a model's `fallback`. Log in with `lembas login <address>`; without a login the CLI says so
+  and how. An old `connections.yaml` still starts: an entry that is not the login is named in a
+  warning and ignored. One server at a time: logging in to another signs this machine out of the
+  first.
+- **Models are named as the server serves them** (`deepseek/deepseek-flash`), with no connection
+  in front; a `config.yaml` naming one the old way is rewritten once. The context window,
+  efforts and capacity are the server's word.
+- **Memory is the server's**, shared with your chats there (when the login's token may reach it):
+  the `memory` tool and the memory in the prompt. Notes, knowledge bases and skills stay on this
+  machine.
+- **Instruction files stack.** Every `AGENTS.md` (or `CLAUDE.md`) from the project root down to the
+  working directory goes to the model, outermost first — not only the nearest one.
+- **Tool results are kept short when they come in, and never changed afterwards**, so the server's
+  prompt cache holds. Every result has an id (`[#0001]`); a read says its lines and a hash of the
+  file; reading an unchanged file again, or the same listing or search with the same result,
+  answers with a pointer to the earlier result; output over 400 lines or 40,000 characters keeps its
+  beginning and its end; edits answer with their diff. `compaction.prune`, which cut old outputs
+  and made the server read the whole conversation again, is removed.
+- **The link speaks protocol 3** with a LLeMbas 2.0 server. A 1.x server is refused at login and by
+  the link, saying to update the server (or use LLeMbas CLI 1.x); a newer one says to update the CLI.
+- **A chat started on a model runs on that model.** When the web UI opens a session on this device
+  with a model the device cannot run, it is refused with the reason instead of being answered on
+  the device's own model.
+
+### Added
+
+- **`recall`**: the model can see any earlier tool result again, in full or from a line on — the
+  part of a long output left out, or a result from before the conversation was summarised. After
+  a summary the model also gets a table of the files it had read.
+- **`show`**, in a session the web UI or LLeMbas Desktop opened: the model can open a file it made
+  — a page, a document — in your viewer beside the chat.
+
 ## [1.5.2] — 2026-10-25
 
 Logging in again leaves one device, and a link that cannot connect says why.