* fix(agents): skip bootstrap files with undefined path
buildBootstrapContextFiles() called file.path.replace() without checking
that path was defined. If a hook pushed a bootstrap file using 'filePath'
instead of 'path', the function threw TypeError and crashed every agent
session — not just the misconfigured hook.
Fix: add a null-guard before the path.replace() call. Files with undefined
path are skipped with a warning so one bad hook can't take down all agents.
Also adds a test covering the undefined-path case.
Fixes#22693
* fix: harden bootstrap path validation and report guards (#22698) (thanks @arosstale)
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Co-authored-by: Peter Steinberger <steipete@gmail.com>