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Add per-channel hybrid audio spread spectrum and env feature toggles

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Spread spectrum v2: independent per-channel embedding with round-robin
bit distribution, preserving spatial stereo/surround mix. Adaptive chip
tiers (256/512/1024) trade capacity for lossy codec robustness. LFE
channel skipped for 5.1+ layouts. v2 header (20B) with backward-
compatible v0 decode fallback.

Environment toggles (STEGASOO_AUDIO, STEGASOO_VIDEO) gate audio/video
features for minimal builds (e.g. Raspberry Pi image-only). Values:
auto (default, detect deps), 1/true (force on), 0/false (force off).

Web UI fixes: accordion defaults to step 1 on load, chevron arrow
styling, required attribute toggling for audio carrier type switch,
"Images & Mode" renamed to "Reference, Carrier, Mode".

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
adlee-was-taken
2026-02-28 11:58:40 -05:00
parent 0248bec813
commit ef5a9ce9cb
41 changed files with 4281 additions and 732 deletions
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2
frontends/cli/main.py
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@@ -361,7 +361,7 @@ def generate(pin, rsa, pin_length, rsa_bits, words, output, password, as_json, q
qr_bytes = generate_qr_code(creds.rsa_key_pem, compress=True, output_format=fmt)
qr_path.write_bytes(qr_bytes)
click.secho(f"─── RSA KEY QR CODE ───", fg="green")
click.secho("─── RSA KEY QR CODE ───", fg="green")
click.secho(f" Saved to: {qr}", fg="bright_white")
click.secho(" ⚠️ Contains unencrypted private key!", fg="yellow")
click.echo()