D39 — Server-side KB bootstrap from git remote (replaces the k8s init container)

Decision. cartographer serve clones each kbs: [{remote: ...}]/CARTOGRAPHER_KB_REMOTES into <data>/<nome> before opening the KBs, only if the destination does not already exist; GIT_SSH_COMMAND is built from git.ssh_key/git.known_hosts if not already present in the environment (env always wins). Rationale. The previous k8s deployment required a separate init container for the initial clone — one more failure point, no sharing with the existing fetch/pull-rebase path. Bringing it into the serve process removes the init container; "skip if already present" avoids re-clones at every pod restart. Details: docs/deployment.md §KB bootstrap from git remote.