[PASS] AdminCallbackCodec::encode uses the reserved "adm" namespace
[PASS] AdminCallbackCodec::encode("t","view",5) is under 64 bytes
[PASS] AdminCallbackCodec round-trips entity
[PASS] AdminCallbackCodec round-trips action
[PASS] AdminCallbackCodec round-trips id
[PASS] AdminCallbackCodec id2 is null when not provided
[PASS] AdminCallbackCodec round-trips both id and id2
[PASS] AdminCallbackCodec rejects a non-"adm" namespace (student "opt:" callback)
[PASS] AdminCallbackCodec rejects an unknown entity
[PASS] AdminCallbackCodec rejects a malformed entity.action (missing dot)
[PASS] AdminCallbackCodec rejects a non-numeric id
[PASS] AdminCallbackCodec rejects an empty string
[PASS] AdminCallbackCodec rejects oversized garbage
[PASS] AdminCallbackCodec::encode throws on an unknown entity
[PASS] AdminCallbackCodec::encode throws LengthException when over 64 bytes
[PASS] AdminEditableSettings::all() is non-empty
[PASS] AdminEditableSettings::byIndex(0) exists and matches all()[0]
[PASS] AdminEditableSettings::byIndex() returns null for an out-of-range index
[PASS] AdminEditableSettings has no duplicate keys
[PASS] Every AdminEditableSettings entry has a supported type (string/int/bool)
[PASS] OptionScoringService::increment starts a missing profile at 1
[PASS] OptionScoringService::increment adds on top of an existing value
[PASS] OptionScoringService::decrement subtracts normally above zero
[PASS] OptionScoringService::decrement floors at 0, never negative
[PASS] OptionScoringService::decrement on a missing profile floors at 0 (not -1)
[PASS] AdminStates::all() is non-empty
[PASS] AdminStates::all() never includes IDLE (only "waiting for input" states)
[PASS] AdminStates::all() has no duplicates
[PASS] Every AdminStates::all() entry uses the 'admin.' prefix (never collides with StudentStates)

PHASE 6 ADMIN UNIT TEST RESULT: OK (0 failures)