# Phase 1.0DF: inactive title-presence observer

Status: `HOST_OBSERVER_CONTRACT_COMPLETE_LIVE_REQUEST_UNFORMABLE`

Phase 1.0DF implements only a pure host contract and synthetic result model.
It has no socket, target, CLI, clock, file output, target source or artifact.
No PS5 request or other device action occurred.

The model recognizes two future method classes. `SOURCE_BOUND_QUERY` requires
an independently proven read-only query ABI. `EXACT_PATH_METADATA` requires a
literal absolute path plus separate provenance for that exact mapping. It does
not derive a path from `PPSA01659`, enumerate a directory, use a shell or guess
fallback locations.

Both methods bind firmware 9.60, title `PPSA01659`, exact request bytes, one
read-only request and at most 4,096 result bytes. Only a complete, explicitly
typed PRESENT or ABSENT response may produce that classification. An error,
EOF, incomplete response or ambiguity always produces UNKNOWN; an error is
never interpreted as title absence.

The current source set provides neither an independent query ABI nor an exact
title path. A request cannot therefore be formed and the tracked activation is
empty. The synthetic tests demonstrate policy behavior only, not firmware or
device evidence. A live client, shsrv command, title launch, app termination,
device write, retry and reconnect remain forbidden.