* Gateway: preserve Pi transcript parentId for injected messages
Thread: unknown
When: 2026-02-08 20:08 CST
Repo: https://github.com/openclaw/openclaw.git
Branch: codex/wip/2026-02-09/compact-post-compaction-parentid-fix
Problem
- Post-compaction turns sometimes lost the compaction summary + kept suffix in the *next* provider request.
- Root cause was session graph corruption: gateway appended "stopReason: injected" transcript lines via raw JSONL writes without `parentId`.
- Pi's `SessionManager.buildSessionContext()` walks the `parentId` chain from the current leaf; missing `parentId` can sever the active branch and hide the compaction entry.
Fix
- Use `SessionManager.appendMessage(...)` for injected assistant transcript writes so `parentId` is set to the current leaf.
- Route `chat.inject` through the same helper to avoid duplicating the broken raw JSONL append logic.
Why This Matters
- The compaction algorithm may be correct, but if the leaf chain is broken right after compaction, the provider payload cannot include the summary/suffix "shape" Pi expects.
Testing
- pnpm test src/agents/pi-embedded-helpers.post-compaction-shape.test.ts src/agents/pi-embedded-runner/run.overflow-compaction.post-context.test.ts
- pnpm build
Notes
- This is provider-shape agnostic: it fixes transcript structure so Anthropic/Gemini/etc all see the same post-compaction context.
Resume
- If post-compaction looks wrong again, inspect the session transcript for entries missing `parentId` immediately after `type: compaction`.
* Gateway: guardrail test for transcript parentId (chat.inject)
* Gateway: guardrail against raw transcript appends (chat.ts)
* Gateway: add local AGENTS.md note to preserve Pi transcript parentId chain
* Changelog: note gateway post-compaction amnesia fix
* Gateway: store injected transcript messages with valid stopReason
* Gateway: use valid stopReason in injected fallback
