Majestic to Waybeam conversion

[Lupinixx]

In this (draft) PR I compile a list of everything that needs to change to make PixelPilot compatible with waybeam_venc instead of Majestic, and track progress on the implementation.
If anything is missing, let me know and I'll add it to the list.

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Sensor / Mode

• Replace separate Size, FPS, and Video Mode dropdowns with a single Mode dropdown backed by GET /api/v1/modes

Recording

• get air camera rec_enable — query recording state via GET /api/v1/record/status
• set air camera rec_enable — start/stop via GET /api/v1/record/start|stop with retry-and-status-check loop (no Majestic CLI fallback)

Infrastructure helpers (gsmenu.sh)

• waybeam_api_get(endpoint) — base curl wrapper
• waybeam_record_active() — checks /record/status for "active": true
• waybeam_record_start() / waybeam_record_stop()
• waybeam_record_set_with_retry_bg(on|off) — retry loop with status verification, background subshell
• waybeam_set_config(key, value) — calls /api/v1/set?key=value; returns 1 and logs to stderr on failure
• waybeam_mode_options() / waybeam_mode_index_from_label() — mode dropdown helpers
• waybeam_get_config(key) — GET /api/v1/get?key, replaces get_majestic_value()
• waybeam_get_iq(param) — query a single ISP IQ parameter from GET /api/v1/iq
• waybeam_set_iq(param, value) — set a single ISP IQ parameter via GET /api/v1/iq/set
• waybeam_restart() — GET /api/v1/restart (needed after setting RESTART-mutability fields)

Image settings — get side

• get air camera mirror → GET /api/v1/get?image.mirror
• get air camera flip → GET /api/v1/get?image.flip
• get air camera contrast → GET /api/v1/iq → contrast param
• get air camera hue → renamed to get air camera brightness → GET /api/v1/iq → brightness param
• get air camera saturation → GET /api/v1/iq → saturation param
• get air camera luminace → renamed to get air camera lightness → GET /api/v1/iq → lightness param
• get air camera sharpness (new) → GET /api/v1/iq → sharpness param
• get air camera hsv (new) → GET /api/v1/iq → hsv param

Image settings — set side

• set air camera mirror → GET /api/v1/set?image.mirror= + restart
• set air camera flip → GET /api/v1/set?image.flip= + restart
• set air camera contrast → GET /api/v1/iq/set?param=contrast&value= (LIVE)
• set air camera hue → renamed to set air camera brightness → GET /api/v1/iq/set?param=brightness&value= (LIVE)
• set air camera saturation → GET /api/v1/iq/set?param=saturation&value= (LIVE)
• set air camera luminace → renamed to set air camera lightness → GET /api/v1/iq/set?param=lightness&value= (LIVE)
• set air camera sharpness (new) → GET /api/v1/iq/set?param=sharpness&value= (LIVE)
• set air camera hsv (new) → GET /api/v1/iq/set?param=hsv&value= (LIVE)

Video encoding — get side

• get air camera bitrate → GET /api/v1/get?video0.bitrate
• get air camera gopsize → GET /api/v1/get?video0.gopSize
• get air camera rc_mode → GET /api/v1/get?video0.rcMode (added qvbr option)
• get air camera codec → returns h265 statically; control hidden in UI (Waybeam is H.265-only on star6e)

Video encoding — set side

• set air camera bitrate → GET /api/v1/set?video0.bitrate= (LIVE)
• set air camera gopsize → GET /api/v1/set?video0.gopSize= (LIVE)
• set air camera rc_mode → GET /api/v1/set?video0.rcMode= + restart
• set air camera codec → no-op; control hidden in UI

ISP / exposure — get side

• get air camera antiflicker → GET /api/v1/iq → ae_flicker param
• get air camera exposure → GET /api/v1/iq → ae_ev_comp (EV compensation, range -4 to 4); UI label renamed to "EV Compensation"
• get air camera sensor_file → GET /api/v1/get?isp.sensorBin

ISP / exposure — set side

• set air camera antiflicker → GET /api/v1/iq/set?param=ae_flicker&value=
• set air camera exposure → GET /api/v1/iq/set?param=ae_ev_comp&value= (LIVE)
• set air camera sensor_file → GET /api/v1/set?isp.sensorBin= + restart

FPV / ROI — get side

• get air camera fpv_enable → GET /api/v1/get?fpv.roiEnabled
• get air camera noiselevel → GET /api/v1/get?fpv.noiseLevel (range 0–7)

FPV / ROI — set side

• set air camera fpv_enable → GET /api/v1/set?fpv.roiEnabled= (LIVE)
• set air camera noiselevel → GET /api/v1/set?fpv.noiseLevel= + restart

Recording config (drone-side) — get side

• get air camera rec_split → GET /api/v1/get?record.maxSeconds (range 0–300)
• get air camera rec_maxusage → GET /api/v1/get?record.maxMB (range 0–10000)

Recording config (drone-side) — set side

• set air camera rec_split → GET /api/v1/set?record.maxSeconds= + restart
• set air camera rec_maxusage → GET /api/v1/set?record.maxMB= + restart

Additional fixes

• set air wfbng adaptivelink — removed majestic CLI calls; uses waybeam_set_config for video0.qpDelta
• reload_switch_value — fix callback double-fire bug (remove/re-add event cb around lv_obj_set_state)
• bitrate visibility — no longer toggled by gsmenu_toggle_rxmode

Infrastructure cleanup

• Remove get_majestic_value() (all camera reads now use Waybeam API)
• Remove MAJESTIC_YAML variable
• Remove majestic.yaml from refresh_cache() SCP
• wfb.yaml / alink.conf SCP cache retained — still needed for WFB-ng and alink settings

Out of scope for this PR

• WFB-ng wireless settings (channel, MCS, STBC, LDPC, FEC) — controlled via wifibroadcast cli, not Majestic/waybeam
• Telemetry settings — controlled via wifibroadcast cli
• Alink drone feature — separate process, separate scope

[Lupinixx]

I've bench tested it and it all works. Will keep this as draft as long as the main VTX images does not yet implement waybeam_venc yet.