Sync the self-hosting stack

CHANGELOG.md

@@ -9,6 +9,65 @@ one of them changed. An entry says which artefact and which version, so `web 0.1
 Every version published to a channel appears here. Nothing is written from memory afterwards: a build
 cannot be published without its entry.
 
+## 2026-09-11 — The assistant was reading the first and last pages of a file and nothing in between `api 0.110.0`
+
+Anything the assistant read — a document in a conversation's workspace, a config file on one of your
+machines — was cut down to about 12,000 characters before it reached the model. That cut was the
+problem rather than the size: it kept the beginning and the end and deleted the middle, then joined
+the two halves together. What the assistant received looked like a complete file. It read as
+continuous text, with nothing to indicate that 97% of a long document was missing, so the assistant
+had no way to know it was answering about text it had never seen — and neither did you.
+
+**`read_document` now returns the document itself.** Up to 60,000 characters by default and 200,000
+on request, always a single unbroken run starting where the assistant asked, with a line at the end
+saying how much is left and where to continue. On a document longer than that the assistant reads it
+in order, page after page, instead of receiving a collage. This matters most for editing: a patch has
+to quote the existing text exactly, and text welded together from two ends of a document cannot be
+quoted.
+
+**`ssh_read_file` and `agent_read_file` had the same fault**, plus one of their own: both offered a
+`maxBytes` setting that went up to two megabytes, and everything above roughly 12,000 was discarded
+after being read. They now return what they were asked for — 60,000 bytes by default, 200,000 at
+most — always from the start of the file, with a note saying how much of it is left. Asking for more
+than they can return is now refused with a message, instead of accepted and quietly ignored, and the
+note points at `head`, `tail`, `sed` or `grep` when a file is genuinely too large to read whole.
+
+**Every other tool is unchanged.** A command's output, a directory listing, a query result — these
+are still cut at the same place as before, because for a log or a table the beginning and the end are
+usually the answer. The larger budget belongs only to the tools whose result is meant to be a file.
+
+**Self-hosters:** nothing to do. No schema, no configuration. Note that a large read now genuinely
+occupies the model's context, which it previously only appeared to — if your `OPENAI_MODEL` has a
+small context window, the assistant will be reading in more, smaller pages.
+
+## 2026-09-11 — Pinning a conversation appeared to do nothing `web 0.132.0`
+
+The rail on the left of a conversation held two ideas that were never explained apart: a "working set"
+that the product called something else everywhere you actually touched it, and a pin whose effect was
+invisible. Pinning a conversation left the list looking exactly as it had a moment earlier — same
+rows, same order, no mark on the one just pinned — so the only reasonable conclusion was that the
+pin had not worked.
+
+**It had worked, and the list was refusing to redraw.** The rail deliberately holds its order still
+for a moment after you touch it, so a row never slides out from under a tap. Pinning was the one
+action where nothing came along afterwards to release the hold: the pin was saved, the freeze was
+applied by the same click, and the rail then went on drawing the pre-pin order for as long as the tab
+stayed open. It now lets go on its own the moment the pause is over.
+
+**Pinned conversations have their own section**, above the ones you have merely been in, and a
+conversation stays under "Pinned" even while it is the one you are reading. A pin that moves somewhere
+else when you open it is a pin you cannot find at the moment you go looking for it.
+
+**The pin is now visible without hovering.** It was drawn only when the pointer was over the row,
+which on a touch screen means never, and on a mouse means the state of the list changes depending on
+where the cursor happens to rest.
+
+**One name for one thing.** "Working set" is gone; the rail, the panel, its tooltips and the remove
+action all say "dock", in English, French and German.
+
+**Self-hosters:** nothing to do. Pins and recents are stored in the browser as before, and no pin is
+lost by the upgrade.
+
 ## 2026-09-11 — Fixing one paragraph meant resending the whole document `api 0.109.0`
 
 The assistant could write a document into a conversation and replace its body, but replacing was the