Compaction moves the folded span into <session>.outputs/fold-<hash>.md and leaves a pointer the model reads back with read_file. The summarizer path, its retries, bounds and tests are removed.
Answering an ask with no selection ends the turn normally instead of reporting a failure.
Find bar, overview and context cards, compact dialog, image preview, root-missing banner, toasts, side panel and prompt refine are aligned to the Chat-Tools board; the agent preset picker follows the Agent-Picker board.
mechanicalFoldDigest, the stand-in when the summarizer cannot digest a
fold, listed each user turn's provider-visible Content. The oldest turns
a fold takes carry the host's date and standing-instruction blocks, so
the 240-character line went on <current-date> and
<project-instructions> and the person's words were cut off, and a turn
of host blocks alone was listed as something the user said.
Read each turn through sessionstore.UserMessageText, the definition the
history index and its snippets already share, and skip a turn with
nothing left.
A summary request the provider rejects as larger than its context (the documented
context_length_exceeded code, nothing else) is retried at 70%, 50% and 35% of the
refused input, shortened by the same deterministic steps as before; a refused request
costs nothing, so the digest is not given up until three smaller inputs were refused.
A provider that refuses every size ends as summary_input_too_large.
On a 1M window the fixed 8K output margin was smaller than the prompt
estimate's own error, so a prompt a percent above its estimate plus a 64K
completion exceeded the window and the provider refused every turn. The margin
is now max(8K, window/32), and a codeless 400/413 is classified as an overflow
when the estimate plus the requested completion is past the window, so the
turn folds and replays instead of repeating the refusal.
Fixes#12694
A fold that was refused or failed ended with an aborted card reading
"folded nothing" and a blocked receipt whose code was empty; the cause lived
only in a sentence. Checkpoint rejections now carry a code per rule, summary
failures are classified by sentinel (truncated, timeout, input too large,
context changed, provider failure), and the code rides both the receipt and
the aborted compaction frame. The Studio card shows a localized cause, and
keeps its before/after token pair on one line when the row wraps.
Projection, compaction and token estimation were 121 methods on *Agent,
free to touch any of its state. They now form one subsystem inside the
agent package:
- windowState holds what the window owns for a conversation: the
installed projection, the compaction in flight, the pressure latches.
It used to sit as eight loose fields on sessionRuntime.
sessionRuntime.reset hands a new conversation to windowState.reset, and
the lifetime guard in sessionstate_test.go now holds both structs to
their reset and carry-over lists.
- The window's methods live on *contextWindow, which carries only its
state, the session, the configuration, the services and a windowHost.
- windowHost is everything the window asks of the loop: eight callbacks
(the todo and host-context tails, tool facts, the provider projection,
preparing a sampling request, the extension compaction intercepts,
failure annotation) and Session. It was derived from the compiler, not
written by hand, so it is the whole dependency.
- The loop reaches the window through a.window(). The agent's public
context API (ContextBudget, CacheState, LoadProjectionSidecar and the
rest) is unchanged and forwards to it.
The new repolint rule window-state holds the boundary. Only methods on
the window's own types may read sess.win, and the owners are declared in
tools/repolint/windowstate.go. REASONIX.md names the boundary.
Behaviour is unchanged. No test was added or removed. Tests reach the
window's internals through a.window() like the loop does.
internal/ was 141 packages side by side, so nothing but a reader's memory
said which were foundations and which assembled the rest. Each now sits in a
layer directory, and the directory is the declaration:
base L0 foundation with no domain in it
contract L1 types and interfaces the layers above agree on
model, tools, safety, ext, state, platform
L2 subsystems, peers of one another
runtime L3 the turn engine
session L4 the controller
assembly L5 the composition root
frontend L6 cli, serve, acp and the host adapters
Only paths change: package names, code and behaviour do not. Imports,
repolint and coverage baselines, sensitive paths, CI package lists and docs
follow the new paths; release notes keep the paths they were written with,
and sample paths inside tests and fixtures keep theirs.
repolint gains layer-order: a package may import its own layer and those
below it, read from where it lives. The 47 imports that point upward today
are recorded as that rule's opening debt (-allow-widen, a new rule's first
baseline) and can only go down. Most of it is config, which still reaches
into eight subsystems and is the next thing to take apart; the rest is
event, history and a few tools reaching into runtime for types that belong
in contract.
yhh