WS-E.2: ratchet coverage floors to reality; add missing package floors

[LukasWodka]

Part of epic tracebloc/backend#1106. Full spec: report §5 (mirrored on the epic; artifact https://claude.ai/code/artifact/b4b6e6a6-4d76-4e46-a668-6f4f0f944344). WS-E.2: cli 68→80, submit 72→78; ADD push:87 and cluster:75 (the 6.3k-LOC money path has no floor today).

[LukasWodka]

Shipped in #301 (merged to develop). Closing as completed — CLI refactor epic backend#1106 cleanup.