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ci/woodpecker/pr/ci Pipeline failed
Three guides that existed only as one host's working copy, promoted to framework templates so every estate gets them. A working copy under ~/.mosaic binds one host; only a template here binds all of them. SEAT-IDENTITY.md (new) documents how a seat's git credential is actually resolved after #1311: identity from MOSAIC_GIT_IDENTITY, then mosaic.gitIdentity, then the stdin username; host mapped to a store prefix; then ONE of two stores chosen by whether the seat directory exists, with no precedence and no fallback between them. A seat with a directory and an empty slot fails closed rather than reaching the service store, and that is the point. It also corrects how to find the helper. credential.helper commonly names an absolute path, so `command -v git-credential-mosaic` answers a different question than the one git asks, and the two stop agreeing the moment the PATH copy is removed. Git also tries EVERY configured helper in order, so a fail-closed helper in front silently hands the request to whatever is configured behind it. The guide says to read the whole list. FLEET-COMMS.md (new) documents agent-send.sh: the class table, the addressing preamble, and the exit codes — including that rc=2 means the text reached the pane as an unsubmitted draft, so retrying double-sends it. Confirm with capture-pane instead. It also says to measure the fleet rather than trust roster.yaml, which on a live host was simultaneously naming a socket that did not exist, listing seats that were not running, and omitting seats that were. CODE-REVIEW.md gains an Evidence Discipline section: a green is not a result until you have shown it could go red, measurement and explanation are separate sentences, verify by content on the ref that ships rather than by ancestry of a local sha, and confidence is part of a finding. Plus four shell-measurement rules earned on #1311, each of which produced a wrong conclusion first — `cmd | tail; echo rc=$?` reports tail's status, a missed glob under pipefail exits 2 and kills the run under set -e, nonzero-with-no-output is an environment question before it is a code question, and `git -C` in a non-repo directory answers from the enclosing repo. The estate-specific repository exception that lived in the working copy is not carried here. The template says an estate may document one, scoped to a named repository and never precedent for a second. Both new guides are added to the two routing tables that agents read.