Forward Sony controller input through owned native HID sessions

[zortos293]

Scope

Adds the Sony input path to the Qt/native client: complete typed SDL snapshots flow through one shared wire adapter, C ABI 11, bounded native HID state, and the existing reliable NVST control channel. This PR contains only the 38-file Sony delta on merged dev c1bd5f95. The Windows UDP correction and decoder-fixture pacing fix are already in its base.

Ownership and recovery

• Source claims and snapshots use the selected logical player consistently. New claims precede reports; source/session incarnations reject stale input and rumble.
• Capture loss preserves a neutral release across rapid resume without pretending the device detached. Removal releases before retiring the remote ID. Retired IDs cannot be rebound within the same association, so a replacement or selection change can use ordinary-gamepad fallback.
• Endpoint guards close on failed startup and terminal paths. Admission and enqueue share synchronization. Healthy shutdown flushes release/removal through the real peer before disconnect.
• The control writer reserves separate 64 KiB normal and teardown budgets within a 128 KiB total. Existing decoder-only recovery remains independent of input ownership.

End-to-end verification

The Linux Qt integration test uses virtual SDL devices, the production ControllerInput, shared SonySnapshotWire adapter, real NativeStreamRuntime/FFI, an accepted software-decoding session, and a genuine local ICE/DTLS/SCTP peer. It checks actual received reports, not just queued bytes or an idle runtime.

Six scenarios cover buttons/touch/click and both Sony Y signs; negotiated ordinary fallback and Y inversion; capture neutralization with rapid resume; detach/replacement tombstones; selected-second-source logical-zero claims and in-session selection; and peer-originated rumble routed to the selected physical source. Inactive/retired rumble is checked after an exact native post-dispatch receipt and two subsequent ordered cursor events that drain the callback path.

The peer has separate physical/logical ICE addressing, bounded stdin lines/commands and per-iteration work, and an isolated probe-only Cargo build. Its diagnostic capture has owned cleanup and bounded storage. A focused Sony test build explicitly deploys the peer. The ALSA null fixture is explicit, not a developer-machine configuration dependency.

Checks

• Independent parent replay: 869 bundled-native tests passed, 16 ignored, with --features linux-ffmpeg-bundled.
• Strict Clippy covers the whole workspace/all targets with bundled FFmpeg and the peer feature; formatting passed.
• Full primary Qt suite: 351/351 passed. Final focused chain replay: six scenarios, eight QtTest passes including setup/cleanup, zero skips.
• 158 contracts and localization passed. The software-ready Qt acceptance mode was also explicitly rendered and inspected.
• Real-peer shutdown, endpoint lifecycle, stale-incarnation, release-ordering, and budget/flood regressions passed. The bounded peer-line regression was reproduced on the original binary and rejected by the corrected binary.

Limits

The end-to-end peer is local and the SDL devices are virtual. This does not claim authenticated GFN gameplay or physical USB qualification. G29/HOTAS production support remains blocked on the separately documented physical output, release, identity, and remote-activation gates; this PR does not silently enable or defer those profiles. No nightly signing, tag, version bump, or release is triggered here.

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