Compaction summaries drop or soften user-stated constraints,
corrections, and prohibitions, so post-compaction assistants repeat
behavior the user already corrected. Add a summary prompt bullet that
instructs the summarizer to quote them, treat them as standing until
revoked, and attribute rules to their true source instead of
defaulting to the user.
Validated offline on unseen human chats: holdout P1 delta +0.175
(arbitrated), 13/18 cases improve. This improves per-compaction
retention only; it does not address deep-chain correction loss.
Two additions to the compaction summary prompt:
1. Error specificity: the "errors encountered" bullet now instructs the
model to keep error notes specific (name the file, the error, the
fix) and not generalize from a specific failure to a blanket
tool-avoidance rule. This addresses the doctrine crystallization
pattern where a single tool failure gets promoted to a standing
"avoid tool X" rule that persists across compactions and model swaps.
2. Reproducibility: a new closing sentence instructs the model to
reference reproducible content by path, command, or URL rather than
inlining it. Content without a stable reproducer is still preserved
inline with a brief summary. This targets summary bloat from
inlined code blocks (worst case: 34k chars, 76 code blocks
reproducing repo content verbatim).
Refs CODAGT-331
We had a bug where computer use base64-encoded screenshots would not be
interpreted as screenshots anymore once saved to the db, loaded back
into memory, and sent to Anthropic. Instead, they would be interpreted
as regular text. Once a computer use agent made enough screenshots and
stopped, and you tried sending it another message, you'd get an out of
context error:
<img width="808" height="367" alt="Screenshot 2026-03-23 at 12 02 54"
src="https://github.com/user-attachments/assets/f0bf6be2-4863-47ca-a7a9-9e6d9dfceeed"
/>
This PR fixes that.
- Moves `coderd/chatd/`, `coderd/gitsync/`, `enterprise/coderd/chatd/`
under `x/` parent directories to signal instability
- Adds `Experimental:` glue code comments in `coderd/coderd.go`
> 🤖 This PR was created with the help of Coder Agents, and was
reviewed by my human. 🧑💻
Mathias Fredriksson