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## Why Line-based export parsing can truncate multiline values or mistake their contents for declarations. Snapshot replay also needs to restore Bash options before parsing functions that use extended glob syntax. ## What changed - Capture shell state, aliases, and complete export records with NUL-delimited boundaries, separating capture, credential preparation, and rendering. - Apply credential and environment policy to whole exports, preserving multiline values and making credential aliases follow allowed overrides. - Restore Bash `shopt` options before functions, including for Bash running as `sh`. - Support non-evaluating POSIX `ENV` path expansion and preserve native environment metadata and unset exports. - Move core and exec-server snapshot consumers to the shared capture parser. Allow capture overhead while enforcing the exec-server's 512 KiB state-and-environment limit before filtering. ## Testing Add regression coverage for complete capture records, multiline export filtering and replay, credential alias overrides, `ENV` expansion, and `PATH` export state. Extend exec-server tests to cover Bash-backed `sh`, `extglob`, `nocasematch`, `set -u`, and large environments. GitOrigin-RevId: 7589ab4d137529a395dcee10b5162718de24a621