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injection guard: never arm on a quoted spill path; lift when the file is gone - #338
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…file is gone On 2026-11-14 a session start returned normally, but an injected memory quoted the old overflow message and a placeholder spill path. The guard armed on the quote and blocked every tool (Bash, agent messages) for a file that never existed; reading a missing file is an error, so the clear hook never ran. Now it arms only on a spill file that exists, and the check lifts a gate whose file is gone. Two tests written first and seen to fail; guard suites 117 passed. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MrfsFw8X6iNzKLGMKxzKDR
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A session start returned normally, but an injected memory quoted the old overflow message and a placeholder spill path (
<project>/tool-results/mcp-plur-plur_session_start-<ts>.txt). The guard armed on the quote and blocked every tool for the rest of the session, waiting for a file that never existed (reading a missing file errors, soclearnever ran). Now: arm only on a spill file that exists; the check lifts a gate whose file is gone. Two tests written first and seen to fail; guard suites 117 passed.🤖 Generated with Claude Code
https://claude.ai/code/session_01MrfsFw8X6iNzKLGMKxzKDR