docs: add full-duplex voice AI assistant guide

[mdydek]

Closes #

⚠️ Breaking changes ⚠️

Introduced changes

Checklist

• Linked relevant issue
• Updated relevant documentation
• Added/Conducted relevant tests
• Performed self-review of the code
• Updated Web Audio API coverage
• Added support for web
• Updated old arch android spec file

[github-actions]

WPT non-regression comparison

PASS — no regressions · 0 improved section(s) · overall 3427 → 3427 (0)

Unchanged sections (28)

Spec section	Base pass	Head pass	Delta
Processing model	1	1	0
Other	56	56	0
AnalyserNode	138	138	0
AudioBuffer	140	140	0
AudioBufferSourceNode	220	220	0
AudioContext	58	58	0
AudioNode	261	261	0
AudioParam	680	680	0
BiquadFilterNode	275	275	0
ChannelMergerNode	30	30	0
ChannelSplitterNode	7	7	0
ConstantSourceNode	64	64	0
ConvolverNode	178	178	0
DelayNode	127	127	0
DestinationNode	0	0	0
DynamicsCompressorNode	4	4	0
GainNode	15	15	0
IIRFilterNode	87	87	0
MediaElementAudioSourceNode	0	0	0
MediaStreamAudioDestinationNode	1	1	0
MediaStreamAudioSourceNode	0	0	0
OfflineAudioContext	35	35	0
OscillatorNode	104	104	0
PannerNode	727	727	0
PeriodicWave	33	33	0
ScriptProcessorNode	0	0	0
StereoPannerNode	104	104	0
WaveShaperNode	82	82	0

_{Baseline: 022b263b41e413915080c2a749e83d32f77eb58c · Candidate: a579fa0653e8b4690c6623ce37ef1643b5b8741b}

_{Workflow run · this comment is updated on every push.}