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Author	SHA1	Message	Date
enricobuehlerandClaude Fable 5	151adc4bcc	chore(m2b): TEMP cursor-meta probe — DROP BEFORE MERGE ... Rate-limited journal logging of SPA_META_Cursor arrival/absence, reported id/position/bitmap offset, and bitmap acceptance — the Linux cursor pipeline is otherwise blind end-to-end during Mutter RecordVirtual metadata bring-up on .21. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:47:53 +02:00
enricobuehlerandClaude Fable 5	0619af391e	fix(linux/inject): map absolute pointer/touch into the streamed output's region ... The libei absolute device advertises one region per logical monitor, and both MouseMoveAbs and touch mapped into regions().first() — whichever output the compositor announced first. Next to a physical monitor (on-glass: GNOME with a dummy HDMI beside the virtual primary) that put the pointer and every click on the WRONG output: the seat cursor never entered the streamed monitor, so neither embedded nor metadata cursor capture could ever see it, and the cursor channel had nothing to forward. Pick the region whose logical size matches the streamed mode (the wire flags already carry it); fall back to first() for the single-monitor case. Region geometry now rides the device-RESUMED log line for diagnosability; matching the screencast mapping_id instead of the size is the follow-up for same-sized-monitor ambiguity. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:47:53 +02:00
enricobuehlerandClaude Fable 5	afe120bf34	fix(linux/vdisplay): kwin virtual output ships the cursor as metadata too ... Same trap as the Mutter backend: zkde_screencast pointer mode 2 (embedded) never delivers SPA_META_Cursor, starving both the cursor channel and the encoder blend. Mode 4 (metadata) feeds both. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Fable 5	c29186bd1a	fix(host+vdisplay): a mode-switch replacement display inherits the group topology ... The resize rebuild creates the new virtual display BEFORE retiring the old one (create-before-drop), so the registry saw a live same-backend sibling — its own dying predecessor — and told the backend it was not first in group. Mutter then skipped the Primary/Exclusive apply ("joining an existing display group — extending") and the retiring owner took the topology with it: every resize silently demoted the virtual output to an extended, shell-less desktop. Thread the superseded pool gen through acquire so the replacement establishes topology, and stop counting kept (Lingering/Pinned) entries as demoting siblings — no session owns them, so there is no live desktop to clobber. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Fable 5	315ffaf144	fix(linux/vdisplay): mutter virtual monitor ships the cursor as SPA_META_Cursor ... RecordVirtual was created with cursor-mode EMBEDDED, which never delivers cursor metadata — the cursor channel had nothing to forward (client-drawn cursor invisible) and the always-built encoder blend had nothing to composite (host-drawn cursor invisible too). Metadata mode feeds both: non-forwarding sessions get the blended pointer (same pixels Mutter would have embedded), forwarding sessions strip the overlay and send shape/state. The capturer already negotiates the meta on every stream (meta_param). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	c63ac48c9c	fix(windows/capture): actually QUERY the HDR SDR-white scale — the refresh block was silently dropped ... faad4b57 shipped the field, shader scale, and plumbing but the scripted edit inserting the sdr_white_level_scale() refresh in the scratch-rebuild arm matched nothing and silently no-op'd (no assert) — sdr_white_scale stayed at its 1.0 init, i.e. 80 nits, i.e. exactly the old dark cursor. Now queried on every scratch rebuild, with an info log of queried/applied so an HDR session shows what it uses. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	cecc059830	fix(windows/capture): 250 Hz cursor poll + HDR white-scale observability ... - The polled position is also the composite-blend position: at 16 ms a 240 fps session reused a stale position for ~4 consecutive frames and the composited pointer visibly stuttered against the video. 4 ms out-paces every session rate; a tick is one GetCursorInfo syscall. - Log the queried DISPLAYCONFIG_SDR_WHITE_LEVEL scale on each blend- scratch rebuild so an HDR session shows what is actually applied (the virtual display's own SDR-brightness setting is the suspect when the cursor still reads dark). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	d31d41b6b8	fix(windows/capture): match the HDR-composited cursor to the target's SDR white level ... sRGB→linear alone lands cursor-white at 80 nits (scRGB 1.0) while DWM composes the surrounding SDR desktop at the user's SDR-brightness setting (~200+ nits by default) — the cursor read visibly dark on HDR. Scale by DISPLAYCONFIG_SDR_WHITE_LEVEL (new win_display::sdr_white_level_scale, queried on blend-scratch rebuilds — the CCD query stays off the per-frame path). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	6e37da8b4e	fix(windows/capture): clippy unnecessary_lazy_evaluations in scratch build ... Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	0af280a793	feat(windows/capture): host-side cursor compositing for the capture model — the deterministic fix ... Root cause, proven on-glass across five driver builds: a declared IddCx hardware cursor is IRREVOCABLE. There is no un-declare DDI, the empty-caps re-setup is rejected INVALID_PARAMETER, and after a successful same-mode re-commit with the driver's re-declare provably suppressed (sticky per-target flag, zero re-setups logged) DWM still never composites the software cursor back into the monitor's frames. Every DWM-based composite flip is therefore unfixable. The composite (capture) model is now implemented in OUR pipeline: - the driver keeps its hardware cursor declared for the session's whole life (the state that works) — frames stay pointer-free always; - in composite mode try_consume routes the conversion through a blend scratch: slot copy + one alpha-blended quad of the GDI poller's shape at its polled position (CursorBlendPass — fullscreen-triangle VS with viewport placement, straight-alpha PS, sRGB→linear for FP16/HDR rings), covering all four convert paths (NV12, 4:4:4 copy, P010, PyroWave) GPU-side under the slot's keyed mutex; - pointer-only motion produces no driver publish (declared hw cursor), so try_consume REGENERATES from the last slot whenever the polled cursor state changes — the cursor moves on a static desktop at tick rate, without faking freshness for the stall/death watchdogs; - set_cursor_forward becomes purely host-internal state; the SET_CURSOR_FORWARD IOCTL machinery is no longer used by the host (driver keeps it, dormant) and its sender plumbing is removed. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	89cfef429e	fix(windows/vdisplay): cursor-render state sticky per TARGET across monitor generations ... On-glass: 're-setup on swap-chain assign -> 0x0' fired AFTER 'enable=0 stored' — duplicate/successor monitor entries (re-arrival churn) kept their default-true flag and re-declared the hardware cursor right after the composite flip's re-commit, undoing it. The desired state now lives in a per-target static (CURSOR_FORWARD_DESIRED): every arrival inherits it (no generation can resurrect a declare the session turned off), and the flip stamps EVERY live entry matching the target, declaring against whichever has the live worker. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	b50e4767de	fix(windows/cursor-flip): flag + forced same-mode re-commit — the working un-declare ... The empty-caps un-declare is REJECTED by IddCx (STATUS_INVALID_PARAMETER, on-glass driver 9.9.0722.1407) — there is no un-declare DDI. The composite flip now works with the only lever the OS gives us: every mode COMMIT reverts the path to the software cursor, and the driver skips its per-commit re-declare while cursor_forward_on is off. So: - driver: disable stores the flag only (no DDI call); enable still declares immediately against the live worker's event. - host capturer: after a successful disable flip, force a same-mode re-commit (win_display::force_mode_reenumeration) — DWM composites the pointer from the very next commit; the swap-chain flap is the class the driver's preserved-publisher machinery already rides out. - state now survives re-arrivals end-to-end: the capturer caches the APPLIED state (cleared on every channel (re)delivery, which re-created driver entries need — their flag defaults to declared), and the stream loop re-applies every tick instead of edge-gating (steady-state cost: one Option compare). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	79d30fde64	fix(windows/capture): unsafe block for the extracted dup_into_public call ... Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	6a8df2ba97	fix(windows/cursor-flip): survive driver-side monitor re-arrival — flag-based flip + channel re-delivery ... On-glass (.173, match-window session): every window-size convergence re-creates the driver-side monitor (re-arrival resize / sibling-session slot churn), destroying the cursor worker the channel was delivered to — the flip then died NOT_FOUND (no entry with target_id ∧ worker) and the declared state was lost entirely. Driver: set_cursor_forward becomes STATE, not an edge on one monitor generation — find by target_id ∧ hw_cursor, store cursor_forward_on even without a live worker (it steers the next delivery/re-setup); declare/un-declare only when a worker exists. Channel delivery honors the flag: setup_and_spawn(declare=false) adopts + spawns WITHOUT declaring (composite mode), so a later enable-flip declares against the worker's event. Host: retain the SET_CURSOR_CHANNEL sender; extract deliver_cursor_channel and RE-deliver the surviving section on every ring recreate and — with one retry — when a flip IOCTL fails (the re-arrived entry gets a fresh worker, declared per its flag). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	030a779391	feat(windows/vdisplay): the driver leg of the mid-stream cursor-render flip ... Belongs to 493f4fae (which shipped only the crates/ side — this packaging/ half was left unstaged, so the deployed driver silently lacked the IOCTL and every flip died NOT_FOUND at dispatch): IOCTL_SET_CURSOR_FORWARD dispatch + monitor::set_cursor_forward (cursor_forward_on flag, resetup gate) + cursor_worker:: unsetup_hardware_cursor (empty-caps un-declare experiment). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	d86073dc6a	feat(apple/cursor): send the mid-stream cursor-render flip — ABI v12 ... PunktfunkConnection.setCursorRender(clientDraws:) over the new punktfunk_connection_set_cursor_render export, driven by one edge-detected reconciler in StreamView (clientDraws = captured && desktopMouse) called from every transition — the ⌃⌥⇧M chord, engage/release, and session start. Capture model and released now get the host-composited pointer back in the video (full fidelity); the desktop model keeps the local NSCursor path. xcframework rebuilt v12. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	92761813a9	feat(core+host+driver+client): mid-stream cursor-render flip — host composites in the capture model ... The cursor channel excluded the host pointer from the video for the whole session, but the client only draws it under the DESKTOP mouse model — flipping ⌃⌥⇧M to capture mid-stream left the session pointer-blind (user-found). The fix makes render ownership LIVE state: - wire: CursorRenderMode 0x51 (client→host, control stream) — client_draws: true = desktop model (host excludes + forwards), false = capture model / released (host composites, full fidelity — DWM on Windows incl. real XOR inversion, encoder blend on Linux). Sessions start client_draws=true (the pre-message behavior). - host: control task stores the flag; the encode loop edge-detects it — forwarding + frame.cursor strip while the client draws, quiet forwarder + overlay-into-blend while composited. SessionPlan now grants blend CAPABILITY wherever the capture has a pointer (dropping the !cursor_forward gate) so the composite side needs no encoder rebuild; per-tick frame.cursor decides what is drawn. - Windows: Capturer::set_cursor_forward → retained IOCTL_SET_CURSOR_FORWARD sender (proto v6) → driver (un)declares the IddCx hardware cursor on the LIVE monitor. Un-declare re-issues the setup with EMPTY caps (candidate mechanism — the DDI has no documented un-setup); resetup-on-commit is skipped while off, so a mode commit's software-cursor default is the fallback path. Failure against a pre-v6 driver logs and keeps declared-at-ADD behavior. - SDL client: one edge-detected reconciler at the cursor pump site — desktop-active = client draws; capture model or released = host composites. Covers the chord, the M3 auto-flip, and engage/release. - C ABI v12: punktfunk_connection_set_cursor_render (additive; wire version unchanged — pre-§8 hosts ignore the unknown message type). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	0420be9fa5	fix(apple/cursor): reset per-session cursor-channel state in stop() ... cursorChannelActive/hostCursors/cursorState stayed latched across sessions — a next session against a host WITHOUT the cursor cap would wear the previous session's stale shapes via resetCursorRects. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	f2082f8b57	fix(windows/capture): drop redundant unsafe at the poller-spawn CCD call (inside open_on's unsafe region) ... Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	9162e7b451	fix(windows/vdisplay): drop now-unused INFINITE import (poll-loop wait) ... Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	e59634a578	feat(windows/capture): GDI cursor-shape poller — masked/monochrome cursors for the cursor channel ... The M2c redesign (design/remote-desktop-sweep.md §8): the IddCx hardware- cursor query is alpha-only by design — IDDCX_CURSOR_SHAPE_TYPE has no monochrome value, the OS pre-converts monochrome to masked-color, and masked-color delivery is dead code on modern builds (proven on-glass at every ColorXorCursorSupport level). The driver keeps its hardware cursor declared (XOR FULL) purely so DWM excludes every cursor type from the IDD frame; the SHAPE now comes from a GDI poller in the capture host — which runs as SYSTEM inside the interactive session, so no helper process is needed. CursorPoller (idd_push/cursor_poll.rs, the RustDesk/WebRTC/OBS pattern): ~60 Hz GetCursorInfo on a dedicated thread; rasterise via CopyIcon→GetIconInfo→GetDIBits only when the HCURSOR value changes; monochrome via the WebRTC truth table with invert pixels as opaque black plus a white outline; AND-mask alpha for alpha-less color cursors; CURSOR_SUPPRESSED = hidden; per-output visibility via the target's desktop rect; per-monitor-V2 DPI awareness thread-scoped; input-desktop reattach on failure + 2 s cadence (GetCursorInfo on a stale desktop succeeds with stale data). Spawned iff the cursor channel was delivered; a live poller is the sole overlay source (no serial-namespace mixing) — the driver shm read remains as fallback if the poller dies. Not chosen: DXGI Desktop Duplication GetFramePointerShape — PointerPosition.Visible goes stale under injected-only input on current Win11 (Sunshine #5293, exactly our topology), it burns one of the session's four duplication slots, and IDD-output metadata has conflicting field reports. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Opus 4.8	d2cc770938	fix(windows/vdisplay): QueryHardwareCursor3 + per-mode-commit cursor re-setup — M2c findings ... Durable results of the M2c on-glass bring-up (.173, 2026-07-22): - The base IddCxMonitorQueryHardwareCursor DDI slot is stubbed to STATUS_NOT_SUPPORTED on WDK 26100 — add the ...QueryHardwareCursor3 wrapper (wdk-iddcx) and drain it instead; v3 X/Y are only meaningful when PositionValid, so a position-invalid tick keeps the prior position. - Hardware-cursor setup is per-mode-commit: the OS silently reverts to a software cursor on every mode commit, so re-issue the setup on each swap-chain assignment (monitor::resetup_cursor, called from assign_swap_chain) or the query fails NOT_SUPPORTED forever. - One caps definition for initial setup and re-setup, resting at XOR FULL: the query delivers ONLY alpha shapes in every configuration (all three ColorXorCursorSupport levels, event-driven and 30 Hz polled) — masked/monochrome cursors never arrive. FULL keeps the frame cursor-free for ALL cursor types; the full-fidelity shape comes from the session-side cursor source in the host (design/remote-desktop-sweep.md §8). - Poll the query at ~30 Hz instead of pure event-wait: masked cursors never fire the data event, and the seqlock's position/visibility should stay fresh regardless. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Fable 5	2bbcbc81c6	fix(apple/cursor): disable M3 visibility-based auto-flip — it broke desktop drags ... On-glass (Mac ↔ Windows M2c host): the host cursor's VISIBILITY is not a usable 'a game grabbed the mouse' signal — Windows hides the pointer for ordinary desktop activity (clicking, typing). The per-frame forwarder turned those transients into relative_hint=true, so the client flipped desktop→capture→desktop, which (a) warped the cursor to view-centre and (b) flushed held buttons via releaseAll — a spurious mouse-up ~200 ms into every press that broke window dragging/resizing. Disable the auto-flip; the mouse model stays user-driven (⌃⌥⇧M). The hint still rides the wire, unused, for a future M3 that keys off a REAL pointer-lock signal (host-side ClipCursor/raw-input detection) instead of visibility. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Fable 5	a99ef7f940	fix(windows): hw_cursor_capable must not assume an initialised display manager ... The FIRST session's Welcome runs before any backend construction (vdisplay::open happens at display prep, after the Welcome), so the capability probe's vdm() expect panicked the very first handshake of a fresh service — the client saw a dead connect and auto-wake kicked in. init() is idempotent and the driver facade is a unit struct, so the probe now initialises the manager itself. Found on-glass (.173, first Mac-client connect), fix deployed there. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Fable 5	ec8ca9a535	feat(apple): cursor channel on the Mac client — ABI v11 + NSCursor rendering ... The Mac client now exercises the full cursor channel against capable hosts: desktop-mode sessions advertise CLIENT_CAP_CURSOR, the host stops compositing the pointer, and StreamView draws the forwarded shapes as the real NSCursor — plus the M3 host-driven model flip. - ABI v11: punktfunk_connect_ex9 (adds client_caps; ex7/ex8 pass 0 — Android untouched), PunktfunkCursorShape/State + the two next_cursor_* poll fns (audio-style borrow contract), and PUNKTFUNK_CLIENT_CAP_CURSOR. Fixed in passing: the first insertion split next_host_timing's cfg/no_mangle attributes off the fn, which silently dropped the symbol from the header AND dylib — caught by the Swift build, reattached with its docs. - PunktfunkConnection: clientCaps connect param, hostSupportsCursor, CursorShapeEvent/CursorStateEvent + nextCursorShape/nextCursorState (one cursor thread drains both planes; cursorLock joins the close() ladder). - SessionModel: desktop-mode sessions (DefaultsKey.mouseMode) connect with the cursor cap on macOS. - StreamView: shape cache (serial → NSCursor, straight-alpha RGBA via CGImage), resetCursorRects wears the HOST shape while the desktop model is engaged (hidden host pointer ⇒ invisible), latest-wins state pump, and the M3 auto-flip — edge-triggered on relative_hint, ⌃⌥⇧M sets an override latch cleared by the next host edge, leaving relative warps the pointer to the host position via the inverse letterbox mapping (CGWarpMouseCursorPosition, CursorCapture's coordinate convention). Verified: swift build + full test suites green (xcframework rebuilt at ABI v11, signed); core 218 tests + clippy -D warnings on Linux (.21). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Fable 5	3a34440a6b	feat(windows): IddCx hardware-cursor channel — remote-desktop sweep M2c ... Brings the cursor channel to Windows hosts. The pf-vdisplay driver declares an IddCx hardware cursor for sessions that negotiated cursor-forward — DWM then EXCLUDES the pointer from the IDD frame and delivers shape/position out-of-band, into the same CursorOverlay → forwarder → wire → client pipeline the Linux portal path uses. - pf-driver-proto v5 (additive, host floor stays 3): AddRequest's spare tail becomes hw_cursor (same size/offsets); IOCTL_SET_CURSOR_CHANNEL delivers a host-created CursorShm section (64-byte seqlock header + 256² shape buffer, layout pinned + tested). No event crosses the boundary — the host polls at encode-tick pace. - driver: wdk-iddcx grows the two cursor DDI wrappers; a per-monitor cursor worker (event wait → QueryHardwareCursor → seqlock publish) starts only when BOTH the ADD asked and the channel arrived, so a failed delivery leaves DWM compositing as today. Shape bytes ship raw (BGRA/masked + pitch); the host converts. - host: the section rides the existing sealed-channel broker (least- privilege dup, remote reap on failure); IddPushCapturer::cursor() seqlock-reads → CursorOverlay (BGRA→RGBA, masked-color approximation, desktop→frame origin shift, per-shape conversion cache). New Capturer::cursor() trait hook — the encode loop prefers it over the frame-attached overlay because hardware-cursor moves produce NO new frame on a static desktop. hw_cursor survives the re-arrival resize (carried on the manager's Monitor). - negotiation: cursor_forward grows the Windows arm (client cap ∧ driver proto ≥ 5, probed once via the control device); SessionPlan carries cursor_forward → OutputFormat.hw_cursor. - drive-by: wdk-probe's two pre-existing same-type casts (clippy) and pf-vdisplay's stale spike-test refs (crate::win_display moved to pf-win-display; tracing-subscriber was never a dep) repaired. Verified: proto tests on Mac AND MSVC (15/15 incl. the CursorShm layout pin); clippy -D warnings for proto/frame/capture/vdisplay/host on Linux (.21) and native Windows (.173); the DRIVER workspace clippy -D warnings green against the real WDK 10.0.26100 bindgen (DDI names, enum variants and IDARG layouts all bind). On-box driver deploy + on-glass validation follow. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Fable 5	c3cbffe662	feat(host+client): host-driven mouse-model flip — remote-desktop sweep M3 ... The full Parsec model: launching a game from a desktop session flips the client into captured relative automatically, and back — no chords. - Capture overlay now distinguishes 'hidden' from 'no cursor yet': CursorOverlay grows a visible flag, overlay() returns Some whenever a bitmap is known (the encode loop strips invisible overlays after forwarding so no blend path ever draws one; the CPU composite guarded on visibility already). - Host forwarder maps it onto the reserved wire bit: visible ⇒ VISIBLE, hidden-but-known ⇒ RELATIVE_HINT (an app grabbed/hid the pointer), never any hint before the first bitmap — a cold start can't flip a desktop session into capture. - Presenter: edge-triggered auto-flip on hint changes via the new Capture::set_desktop (chord semantics untouched); a manual ⌃⌥⇧M sets an override latch that holds until the HOST's intent next changes, so the hint never fights the user. Leaving relative warps the local cursor to the host's last pointer position through the new content_to_window inverse-letterbox mapping (unit-tested against finger_to_content) — the hand-back is seamless. Verified on .21: fmt + clippy -D warnings + tests (presenter 20 incl. the inverse-mapping roundtrip, host 245). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Fable 5	4a01bc4463	feat(core+host+client): cursor channel — remote-desktop sweep M2a+M2b ... The host cursor stops riding the video and becomes a real OS cursor on the client (the Parsec/RDP model): pointer feel no longer pays the capture→encode→network→decode→present round trip. Wire (M2a): - Hello grows a client_caps trailing byte (CLIENT_CAP_CURSOR) after the fixed display_hdr block — presence disambiguated by remaining length, which caps the post-HDR tail at 27 bytes (documented); Welcome answers HOST_CAP_CURSOR (capable-and-asked, the 444/clipboard precedent). - CursorShape (0x50, control stream): serial + dims + hotspot + straight RGBA, ≤120px/side so the u16 frame always fits (128² would overshoot); client caches by serial — re-showing a known shape costs 14 bytes, not a bitmap (RDP pointer-cache for free). - CursorState (0xD0 datagram): serial + visible/relative_hint flags + position, sent once per encode-loop tick — latest-wins, self-healing under loss, no refresh timer. relative_hint is reserved for M3. - Client core: two new planes (control-task + datagram-task arms) → next_cursor_shape/next_cursor_state; connect() grows client_caps (C ABI passes 0 until the v11 cursor poll fns exist). Host (M2b, Linux portal only): - handshake::cursor_forward is THE predicate (client asked ∧ Linux ∧ compositor ≠ gamescope) — Welcome bit and session wiring both read it. - SessionPlan.cursor_blend goes false for a forwarding session; the encode loop ticks a CursorForwarder every iteration: shape-serial diff → control-task bridge (mirrors probe_result), state datagram → conn. - CursorOverlay/capture CursorState carry the hotspot through (nearest-neighbor downscale backstop for XL cursors, unit-tested). Presenter: - CursorChannel drains both planes per loop iteration; shapes become SDL color cursors (from_surface + hotspot), applied while the desktop mouse model is engaged; visibility follows the host; capture/released hands back the system cursor. Sessions advertise the cap when they START in desktop mode. Verified on .21: fmt + clippy -D warnings (7 crates) + tests green (core 218 incl. new wire roundtrips, host 245 incl. e2e + forwarder downscale tests). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:43:23 +02:00
enricobuehlerandClaude Fable 5	97d20e1f0a	feat(apple/input): desktop (absolute) mouse mode on macOS — remote-desktop sweep M1 ... Folds the parked client-side-cursor machinery (cursorMode auto/always/ never, hidden while disabled) into the cross-client mouse model: MouseInputMode capture|desktop under DefaultsKey.mouseMode, picked in Settings ▸ Keyboard & mouse (macOS), resolved at session start and gated off on gamescope hosts (relative-only EIS). Desktop model = the un-neutered absolute path with the SDL cursor policy: pointer never disassociated (enters/leaves the stream freely), monitor forwards letterboxed absolute positions, and the local cursor hides only while over the view via an invisible-cursor rect (the host's composited cursor is the one you see; AppKit manages the rect, so no hide/unhide balancing). ⌘⇧C becomes ⌃⌥⇧M — the same chord as the SDL clients — flipping the model live with an atomic release/re-engage. Verified: swift build + full test suites green (macOS arm64). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:37:32 +02:00
enricobuehlerandClaude Fable 5	df04880273	feat(client/input): desktop (absolute) mouse mode — remote-desktop sweep M1 ... New physical-mouse model beside capture: Desktop leaves the pointer uncaptured and sends absolute positions through the letterbox (MouseMoveAbs — every host injector already consumes it). Capture stays the default and the game model. - pf-client-core: MouseMode (capture|desktop) persisted in Settings, default capture so existing stores are unchanged. - pf-presenter: Capture grows a desktop model — latest-wins pending abs position coalesced per loop iteration (same 1000 Hz discipline as relative), flushed before clicks/keys/wheel so they land where the cursor is; Ctrl+Alt+Shift+M flips the model live; local cursor stays hidden over the window (the host's composited cursor is the one you see until the M2 cursor channel); Windows keyboard grab only engages for capture (a desktop stream is something you Alt-Tab away from). - gamescope gating: its EIS is relative-only, so desktop mode is pinned off there (resolved_compositor), with a log note. - Settings surfaces: GTK row (dynamic caption), WinUI combo, console-UI row + step test, capture-hint line. Verified: fmt + clippy -D warnings + tests (33/40/19) on Linux .21; clippy -D warnings for all five crates incl. punktfunk-client-windows native on .173. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 23:37:32 +02:00
enricobuehlerandClaude Fable 5	73fee86337	chore(release): bump workspace version to 0.18.0 ... The 0.17.2 placeholder underestimated this cycle: Android mouse & keyboard (physical mouse + capture, TV remote-as-pointer, IME text, clipboard), the new committed-text input plane (InputKind::TextInput / HOST_CAP_TEXT_INPUT), and the ChaCha20-Poly1305 session cipher are feature work — a minor, not a patch. Wire/driver/C-ABI markers all unchanged (2 / 4 / 10): every addition is negotiated or ignored by older peers. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 22:13:20 +02:00
enricobuehlerandClaude Fable 5	b5ed486243	ci(android): survive fleet-load download truncation in the SDK setup ... The android leg failed twice on 2026-07-22 with sdkmanager's "Error on ZipFile unknown archive" — once in our NDK/build-tools step, once inside setup-android's default package set. Root cause is the shared runner fleet dropping packets under parallel-job load (the same class retry.sh documents for the flatpak leg): sdkmanager unzips while streaming, so a truncated stream reads as a corrupt archive. A solo re-download on the same runner verified clean. - setup-android: install only platform-tools — the action's default legacy `tools` package drags in the ~250 MB emulator this job never uses, which was the largest and flakiest download in the whole leg. - NDK/build-tools/CMake: wrap sdkmanager in retry.sh (4 attempts, linear backoff) — a failed attempt leaves no partial package, so re-invoking is safe. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 22:12:02 +02:00
enricobuehlerandClaude Opus 4.8	0e7f6d85d6	feat(gamestream): signal HDR mode to the client via the 0x010e control message ... punktfunk negotiates HDR correctly (the stream is BT.2020 PQ 10-bit) but never told the client to switch its display into HDR picture mode, so HDR streams stayed in SDR on the TV. Sunshine sends an async control-stream message (IDX_HDR_MODE, type 0x010e, carrying SS_HDR_METADATA) shortly after the stream starts; Moonlight only flips the TV into HDR on that cue. We sent exactly one host→client control message (rumble 0x010B) and never this one. (aurora-tv PR #53 worked around it client-side by inferring HDR from the negotiated format; this fixes it host-side so stock Moonlight clients switch too.) Once the control stream is live and the session negotiated HDR, send a one-shot 0x010e message (enable + 26-byte SS_HDR_METADATA from generic HDR10 defaults), latched per connection and re-armed on Disconnect. The rumble sequence counter is unified into a single monotonic `host_seq` shared by both message types — the GCM nonce derives from `seq`, so a separate per-type counter would reuse (key, nonce) pairs in the host direction. The BT.2020 PQ VUI already rides the bitstream (the encoder derives it from the P010 capture format), so this is purely the missing "switch now" signal; no encoder change needed. Wire layout locked by unit tests. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 21:35:16 +02:00
enricobuehlerandClaude Opus 4.8	2dddf0fefc	fix(gamestream): accept legacy X.509 v2 Moonlight client certs in mTLS pairing ... rustls-webpki 0.103 accepts only X.509 v3 certs and returns `UnsupportedCertVersion` for anything older, aborting the mTLS handshake at the `CertificateVerify` step before it ever checks the signature. The moonlight-embedded client family (moonlight-embedded, aurora-tv, …) still mint self-signed **v2** certs with no keyUsage extension, so pairing fails against punktfunk while it works against Sunshine — whose OpenSSL verify callback never inspects the cert version. (aurora-tv PR #53 worked around this client-side by switching to v3 + keyUsage; this fixes it host-side for stock clients too.) The cert's X.509 version and extensions carry no security weight here: the client cert is self-signed and pinned by SHA-256 (`peer_is_paired`), and the PIN pairing ceremony is the real proof of identity. The property that DOES matter — that the peer holds the private key for the cert it presented — is still enforced: when webpki rejects the cert we re-run exactly that `CertificateVerify` check with a version-agnostic parser (x509-parser SPKI + the same `rsa` verify `pairing::verify256` uses). This is a full cryptographic check, never a bypass: a bad signature still fails, and non-RSA / unsupported schemes fall through to webpki's original error. Matches Sunshine's leniency without loosening the pinned trust model. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-22 21:35:03 +02:00
enricobuehlerandClaude Fable 5	c90343c22f	feat(android): shared clipboard (text) — device↔host sync while streaming ... The desktop clients' clipboard protocol, adopted on Android (text-only v1): opt-in ClipControl at stream start when the host advertises HOST_CAP_CLIPBOARD and the new "Shared clipboard" setting (default on) allows. Device → host: local copies (primary-clip listener + a probe at start) are announced as lazy format-list offers; the text crosses only when the host actually pastes (FetchRequest → served from the live clipboard). Host → device: a host copy's offer is fetched eagerly and lands in the system clipboard (Android has no practical lazy-paste provider), with an echo guard so the resulting clip-changed callback doesn't bounce it back as a new offer. Native side: session/clipboard.rs JNI shims over NativeClient's clip_* surface; events cross to Kotlin as compact strings from a blocking nativeNextClip poll on a dedicated thread (the nativeNextRumble pattern), joined before the session handle is freed. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 19:27:19 +02:00
enricobuehlerandClaude Fable 5	abe6228b42	feat(core+host+android): committed-text input plane (IME path) — InputKind::TextInput ... The VK key-event vocabulary cannot express text an input method COMMITS (autocorrect, gesture typing, non-Latin scripts, emoji). Add a first-class text event and negotiate it: - punktfunk-core: InputKind::TextInput (= 15) carries one Unicode scalar per event in `code`; HOST_CAP_TEXT_INPUT (0x04) in Welcome::host_caps. - Host advertises the cap only where the session's inject backend can type text: Windows SendInput (KEYEVENTF_UNICODE, surrogate-pair aware) and the Linux wlroots backend — a dedicated second zwp_virtual_keyboard whose xkb keymap grows Unicode keysyms on demand (the wtype model), so keymap re-uploads never disturb the main device's layout/modifier state. The KWin-fake-input/libei/gamescope backends can only press layout keycodes, so those sessions don't set the bit and clients keep the VK fallback. - GameStream plane: Moonlight's UTF-8 text packet (MAGIC_UTF8, previously recognized-and-dropped) now decodes to the same TextInput events. - Android: KeyCaptureView picks a real editable InputConnection when the host has the cap — the IME runs its full machinery, mirrored to the host live via common-prefix diffs of the composition (backspaces + new suffix), with setComposingRegion adopting committed text so autocorrect-revert flows diff instead of retyping; newline→Enter, deleteSurroundingText→Backspace/Delete. Older hosts keep the TYPE_NULL raw-key path unchanged. - keymap: media VKs (0xB0-0xB3) → evdev so the Android media keys land on Linux hosts too. Verified: punktfunk-core + host gamestream + pf-inject tests green on Linux (Ubuntu box), clippy clean; Android app+native builds. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 19:19:11 +02:00
enricobuehlerandClaude Fable 5	ddb72edcba	feat(android): physical mouse + TV remote-as-pointer + keyboard hardening ... Phase A — hardware mouse: new MouseForwarder routes every SOURCE_MOUSE event while streaming. Uncaptured (default): hover/drag positions forward as absolute cursor moves, wheel with fractional accumulation (high-res wheels), all five buttons incl. back/forward as X1/X2; the local cursor is hidden over the stream (TYPE_NULL pointer icon) so the host's composited cursor is the visible one. Captured ("Capture pointer for games" setting, or Ctrl+Alt+Shift+Q live): the OS pointer is grabbed via requestPointerCapture on the (repurposed) key-capture view and raw relative deltas forward as mouse-look; held buttons are tracked and flushed on capture loss/teardown, and the engaging click is swallowed (desktop parity). Mouse clicks are intercepted before Compose so they can never be misread as trackpad taps; a mouse back-button's FALLBACK BACK is dropped so it can't yank the user out of the stream. Phase B — keyboard: media/consumer keys (play/pause/next/prev/stop) now map to their VKs instead of falling to the system; TV-remote SELECT maps to Enter. Phase D — Android TV: RemotePointer turns a D-pad-only remote into a pointer (Siri-remote analogue): hold SELECT ~0.8s toggles, D-pad glides the host cursor with ramped acceleration (Choreographer-paced, diagonal-normalized), SELECT taps click, play/pause right-clicks, holding it toggles the on-screen keyboard, BACK leaves pointer mode; an overlay hint teaches the vocabulary. Settings: "Capture pointer for games" + "Invert scroll direction" (applies to the wheel and two-finger touch scrolling). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 18:56:38 +02:00
enricobuehlerandClaude Fable 5	5e088af7ed	fix(pf-win-display): unpin mode indexes on paths the CCD isolate deactivates ... Field report: with Exclusive Topology, the physical monitor sometimes stayed lit — every isolate attempt re-committed and failed SetDisplayConfig with 0x57 ERROR_INVALID_PARAMETER. Clearing DISPLAYCONFIG_PATH_ACTIVE alone leaves the deactivated path's source/target modeInfoIdx pinned to the queried mode entries, and per the SetDisplayConfig contract a path being turned off must have BOTH mode indexes set to DISPLAYCONFIG_PATH_MODE_IDX_INVALID; some driver/topology combinations (notably when the doomed path shares a source with the kept virtual path) reject the supplied config outright, so the retry loop could never converge. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 12:26:44 +02:00
enricobuehlerandClaude Fable 5	b7a00137eb	feat(host): hold a logind sleep/idle inhibitor while clients stream ... Remote INPUT resets the compositor's idle timers, but a passive (video-only) viewer sends none — observed live: a SteamOS Game-Mode host s2idled mid-day and dropped off the network (in a VM with GPU passthrough it never woke again). Refcounted across planes: the native LiveSessionGuard and the GameStream video worker each hold a share; first hold takes the logind sleep:idle block inhibitor on a dedicated plain thread (zbus blocking must not run on a tokio worker), last drop releases. Best-effort: no logind → warn once and stream on. No-op off Linux (macOS/Windows manage their own assertions). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 12:09:47 +02:00
enricobuehlerandClaude Fable 5	acce43ebbf	feat(steamdeck): self-healing reliability — post-OS-update rebuild check + script/docs polish ... - rebuild-check.sh + punktfunk-rebuild-check.service (enabled, ordered Before=punktfunk-host): ldd-probes the host binary at session start — milliseconds when healthy, a full update.sh rebuild only when a SteamOS update actually broke its library links. update.sh restarts go --no-block so the check → update.sh → restart chain can't deadlock against the unit ordering. update.sh retrofits the unit. - installer summary: web console is https (the unit serves TLS). - docs: steamos-host.md (runner in the build step, keep-list + auto rebuild = updates survive hands-free), gamescope.md (Gaming Mode touch = single-finger pointer, exact taps, no multi-touch), plugins.mdx (SteamOS runner note), scripts/steamdeck/README.md (rebuild-check, runner payload, keep list, honest packaging trade-off + the CI-prebuilt future direction). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 11:56:09 +02:00
enricobuehlerandClaude Fable 5	35923080fb	fix(host/linux): scale degenerate-region absolute coords by the session's real output size ... The raw-client-pixels fallback is exact only while the managed session runs at the client's mode. When they diverge — foreign-gamescope attach at its own resolution, supersample/under-render, transitions — raw pixels drift or land out of range. The EIS relay file now carries the session's current output size as a second "WxH" line (from current_gamescope_output_size()); the injector scales normalized client positions into it, keeping raw pixels only as the last resort. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 10:53:14 +02:00
enricobuehlerandClaude Fable 5	0c9461242c	fix(host/linux): don't normalize absolute coords into gamescope's degenerate INT32_MAX EIS region ... The previous commit's no-region fallback never fired: gamescope DOES advertise a region — (0,0,INT32_MAX,INT32_MAX), meaning "coordinates are raw". Mapping normalized positions into it explodes a center tap to x≈1e9, clamped by gamescope to the far corner — the cursor pinned at (1279,799) and every degraded-touch tap landing there. Treat a region as an output geometry only when plausibly sized (≤16384 px); otherwise emit raw client pixels. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 10:40:02 +02:00
enricobuehlerandClaude Fable 5	cc6b37fef0	fix(host/linux): emit absolute pointer/touch on region-less EIS devices + abs input-test probe ... gamescope's "Gamescope Virtual Input" advertises pointer_abs but no region, so every MouseMoveAbs (and the degraded-touch moves built on it) was silently dropped (emitted=false) — clicks then landed at a stale cursor position. With no region, the managed session runs at the client's mode, so client pixels are output pixels: emit them raw. Also: log region count/dims at device-resume, and add PUNKTFUNK_INPUT_TEST_ABS=WxH to `input-test` (corners + center, 1s apart) so the degraded-touch path is verifiable with xdotool alone. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 10:36:05 +02:00
enricobuehlerandClaude Fable 5	1927077cbe	fix(host/linux): degrade touch to absolute pointer when the EIS has no touchscreen device ... gamescope's EIS ("Gamescope Virtual Input") advertises pointer/ pointer_abs/button but never a touchscreen — so in Game Mode every remote TouchDown/Move/Up was dropped on the floor (Desktop Mode works via KwinFakeInput, which does touch). Headless KWin's libei has the same gap. Instead of dropping: degrade to a single-finger absolute pointer — down = abs-move + left press, move = abs-move, up = release — synthesized through the normal Mouse* inject paths so region mapping, held-state tracking, and release_all apply. First finger drives the pointer; later fingers are ignored (a pinch degrades to a drag). A touchscreen device appearing later takes over on the next touch — checked per event, never latched. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 10:24:28 +02:00
enricobuehlerandClaude Fable 5	068da456f5	fix(steamdeck): survive SteamOS A/B updates — register system tuning on the atomic-update keep list ... Verified live on a SteamOS 3.8.14→3.8.16 update: the A/B partset switch rebuilds /etc and drops everything not on Valve's keep list — the udev rule (uhid access: virtual pads silently degrade to Xbox 360), the vhci-hcd autoload (native Deck pad transport), and the UDP buffer sysctl (back to 208 KB → stutter). Valve's sanctioned extension point is a drop-in under /etc/atomic-update.conf.d/ — itself on the stock keep list, so it self-preserves. install.sh §4 and update.sh now register scripts/punktfunk-atomic-keep.conf there. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 10:07:19 +02:00
enricobuehlerandClaude Fable 5	256aa5f7f2	fix(steamdeck): install the plugin runner + harden Deck pad typing + repair update.sh ... - scripts/steamdeck/install.sh (§2b) + update.sh: build and install the scripting runner user-scoped (~/.local wrapper + pinned bun + bundle) — SteamOS's read-only /usr can't take the .deb layout, so the console's plugin store reported "the plugin runner isn't installed" on every SteamOS host. update.sh retrofits it onto existing installs. - plugins.rs runner discovery: check the ~/.local layout after the /usr ones; mention the SteamOS path in the not-installed error. - update.sh: define warn() — it was used but never defined, so under `set -e` the first warn aborted the update before services restarted. - pf-client-core gamepad: a Steam Input virtual pad forwarded on a real Deck (the only-pad case) now declares the DECK kind in its per-pad arrival instead of the wrapper's Xbox 360 identity — the session-level auto_pref already resolved SteamDeck, but the arrival overrides it on current hosts. - reject tests: cover SetupFailed; move the foreign-code probe off 0x68. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 10:01:54 +02:00
enricobuehlerandClaude Fable 5	2562663fc6	fix(host/linux): survive and self-heal dead gamescope sessions on headless SteamOS boxes ... Three fixes for the "most connects simply fail" trap on a SteamOS host with no physical display (VM testbox, panel-less mini PC): - restore path: skip the restore-to-physical-panel when no DRM connector reports a connected display — removing the headless drop-in and restarting gamescope-session.target on such a box just crash-loops gamescope and strands every later connect on "no usable compositor". Keep the headless session (and the takeover state) instead. - connect path: when no live graphical session exists but the MANAGED gamescope infra is present (SteamOS gamescope-session / Bazzite session-plus), route to the gamescope takeover — which rebuilds the session at the client's mode — instead of failing the connect. - error delivery: a session-setup failure used to just drop the QUIC connection, reaching the client as "control stream finished mid-frame" (indistinguishable from transport trouble). Close with a typed setup-failed code (0x68, RejectedSetupFailed = -29) carrying the error text, and give the client handshake/pairing error paths a short grace for the CONNECTION_CLOSE to beat the stream error it caused. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-22 09:50:30 +02:00
enricobuehler	87e7c82cbc	chore(release): bump workspace version to 0.17.2 v0.17.2	2026-07-21 23:33:53 +02:00
enricobuehlerandClaude Opus 4.8	b2e3d1b540	fix(steamdeck/install): add cmake dep + acquire sudo in preflight ... pyrowave-sys's build.rs runs cmake to build the vendored PyroWave C library, but cmake wasn't in the distrobox apt list — so `cargo build -p punktfunk-host` dies on every SteamOS host with "is cmake not installed?". Add it. Also move sudo acquisition from step 4 (after the ~15-min build) into preflight and keep the timestamp warm across the build. Before, a non-interactive run (`ssh host 'bash install.sh'`) silently skipped the UDP-buffer/udev/vhci-hcd/ input-group tuning AND enable-linger — a "successful" host with no gamepad passthrough, lossy streaming, and no headless persistence (dies on logout). Now sudo is prompted once up front (authorize and walk away), and a no-TTY / no-password run fails loudly before the build instead of silently at the end. Validated end-to-end on SteamOS 3.8 in a VM with Radeon 780M passthrough: full host + web build, all planes listening, VAAPI render node, headless auto-start via linger. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-21 22:50:00 +02:00
enricobuehlerandClaude Fable 5	d36bec6e9d	feat(core+host): negotiate ChaCha20-Poly1305 as the session cipher for soft-AES clients ... Lifts the ~100 Mbps decrypt ceiling on clients without hardware AES — the armv7 soft-AES targets (webOS TVs), where AES-128-GCM resolves to fixsliced software AES + software GHASH (~50-100 cpb) while ChaCha20-Poly1305's ARX construction runs ~10-17 cpb portable, a 4-7x lift that PyroWave-on-TV needs (design/chacha20-session-cipher.md). Phase 1 (core crypto, no wire change): SessionKey merges cipher choice and key material (invalid combinations unrepresentable, zeroize + redacted-Debug discipline kept); SessionCrypto dispatches both aead-0.5 ciphers per call — the salt||seq nonce scheme, per-direction salts, seq-as-AAD and replay window carry over verbatim (same 96-bit nonce / 16-byte tag, const-asserted). Config.key becomes SessionKey; validate's zero-key rejection follows the active variant. The C ABI keeps its fixed 16-byte key mapped to AES — no ABI_VERSION bump. Phase 2 (negotiation): VIDEO_CAP_CHACHA20 (0x40) — support-plus-request in one bit, the VIDEO_CAP_444 precedent. Welcome grows cipher@68 + key_chacha@69..101, emitted only when non-zero so an AES session's Welcome stays byte-identical to the pre-cipher form; decode is fail-closed (short key or unknown id -> Err, never a silent AES fallback). No WIRE_VERSION bump; downgrade resistance inherited from the pinned-TLS control channel. Phase 3 (host): grant only when the client advertised the bit and the PUNKTFUNK_CHACHA20 kill-switch (default on, documented) allows; fresh 32-byte per-session key from the same RNG discipline, legacy key field stays independently random; resolved cipher logged at session start. Verification: seal/open suites parameterized over both ciphers + a cross-cipher tamper case; Welcome roundtrip/truncation/fail-closed tests; ChaCha lossy-loopback soak (loss/replay is cipher-independent); bench gains _chacha20 series (AES ids unchanged for CI history) — host-side sealing line-rate-trivial on both x86 (~640 MiB/s) and Apple Silicon (~535 MiB/s). punktfunk-probe drives the interop matrix via PUNKTFUNK_CLIENT_CHACHA20=1 and logs the negotiated cipher. Phase 4 (pf-webos pin bump + unconditional cap bit) follows the next core release. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-21 22:50:00 +02:00