pub const CREATOR_CWD_PREFIX: &str = "creator:cwd=";Expand description
Tag prefix carrying the writing process’ cwd at write time
(e.g. creator:cwd=/Users/alice/projects/foo).
Why: cwd is the single most useful clue when chasing noise — if a
drawer carries creator:cwd=/Users/alice/projects/claude-mpm, the
operator knows the write came from that working directory and can
look at what was running there. Absent when the writer could not
resolve a cwd (e.g. a remote HTTP client that did not send the
optional header).
Test: creator_info_omits_cwd_when_absent.