The previous normalization logic aligned the upper bound using (b // 100) * 100 + 99,
which rounded down to a block start and then extended to +99. For any input where
the upper bound did not already end in 99 (such as 10000-15000 or 10000-20000),
this spilled over by (99 - (b % 100)) ports past the user's requested range
(e.g. 10000-15000 became 10000-15099).
Ports outside the user's input may be in use or unavailable. Align the upper
bound strictly inward so each allocated block is a subset of the input:
- calculate hi as ((b + 1) / PortsPerUser) * PortsPerUser - 1 (ending in ...99 <= b)
- mirror the calculation in scripts/00-ip-ask.sh normalize_user_ports
- update unit tests in internal/cfg to verify strict inward alignment
- update docs/configuration.md examples and container capacity readouts
bluebluesoda
1fdcf3f37b