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* fix(cli): reject --description-file/--content-file paths outside the workdir (MUL-4252) Cross-environment context leak root cause: a quick-create run wrote its issue description to a fixed, machine-shared /tmp/desc.md. The Write silently failed because a different environment's run had left a stale file there, and `multica issue create --description-file /tmp/desc.md` fed that stale content in as the new issue's description. Two profiles on one host share /tmp even though their workdirs are isolated. PR-1 (fail-closed guardrail + guidance): - resolveTextFlag now rejects a --<name>-file path that resolves (after EvalSymlinks on both sides) outside the current working directory, turning "silently used another run's file" into a loud command error. Escape hatch: --allow-external-file. Covers issue create/update --description-file, comment add --content-file, and user profile --description-file via the single choke point. - Templates/brief: the quick-create prompt and the runtime brief now require agent temp files to live inside the task workdir (never /tmp), and to treat a failed write as fatal. Server, daemon, DB, and claim delivery were exonerated in the investigation; the fix stays in the CLI and the prompt layer. Co-authored-by: multica-agent <github@multica.ai> * fix(daemon): quick-create description guidance mandates --description-file for rich text Addresses PR review (MUL-4252): the earlier "prefer inline --description" line conflicted with the runtime brief (which prefers --description-file for long bodies) and reintroduced the MUL-2904 risk — quick-create descriptions are usually multi-line and carry code/quotes/backticks/$(), which the shell rewrites or truncates when passed inline. Now: only short, simple single-line bodies may go inline; anything multi-line or containing special characters must be written to ./description.md and passed via --description-file. Write-failure-is-fatal and workdir-only rules unchanged. Co-authored-by: multica-agent <github@multica.ai> --------- Co-authored-by: J <j@multica.ai> Co-authored-by: multica-agent <github@multica.ai>