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6b38714cb9
Harden context pruning and tool-result character estimation against malformed `{ type: "text" }` blocks created by void/undefined tool handler results.
- Require text blocks to carry a string before using `.length` in the tool-result estimator.
- Guard context-pruning text/image loops against malformed and null content entries.
- Serialize malformed non-string text blocks for pruning size accounting so they cannot bypass trimming as zero-sized.
- Add regression coverage for malformed text blocks, null entries, and non-string text payloads.
Closes #34979.
Maintainer verification:
- `pnpm test src/agents/pi-embedded-runner/tool-result-char-estimator.test.ts src/agents/pi-hooks/context-pruning/pruner.test.ts`
- `pnpm check:changed`
- GitHub checks passed, including the OpenAI / Opus 4.6 parity gate.
Based on prior work by #39331 and #34980.
Co-authored-by: Charles Dusek <cgdusek@gmail.com>
Co-authored-by: alvinttang <alvinttang@users.noreply.github.com>
Co-authored-by: coffeexcoin <coffeexcoin@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>