A first-run experience & correctness update to v1.0.1.

CHANGED: Locked (tier-gated) modules now read as gated, not broken — the danger-red dim is replaced with a clear lock glyph, a tier tag (ENTHUSIAST / PRO), and a legible label, so a Free first-timer can tell a locked module is available on a paid tier rather than malfunctioning

CHANGED: The resting "off" (not-yet-enabled) state is recolored from danger red to the primary accent — the disabled label, left accent bar, media dot, and Enable ring/glow no longer look like a fault when the extension is simply idle

NEW: A "Free includes: EQ, spectrum, RMS meters" line now states what the Free tier provides

CHANGED: The first-run coach mark now opens with a one-sentence statement of what TabDSP does before the control walkthrough
NEW: A dedicated first-enable hint appears the first time DSP is enabled, so it is clear the extension is active even when the current audio needs no correction

FIXED: The keyboard-shortcut help tooltip now lists the actual key bindings

FIXED: The high-contrast styles now match on modern Chromium (prefers-contrast: high → more); the ruleset itself is unchanged

NEW: The INPUT and OUTPUT gain trims now have hover tooltips clarifying they are signal gain, distinct from the limiter's input/output stages

No audio-path changes.

v1.0.1: A refinement update to v1.0.0.

Cross-Site DSP Parity
• FIXED: Single-band Compressor Analog mode, EQ shelf band types, and the full limiter control set now apply identically on every site — including DRM-protected sites (Spotify, Netflix) and Web Audio sites (YouTube, SoundCloud), not just standard media-element sites. Previously these three feature groups were silently ignored anywhere audio was captured through the destination-chain or tab-capture paths
• FIXED: Compressor Analog mode now uses RMS detection with analog knee/attack/release scaling and post-compression saturation on all sites; a latent bug that ran Digital mode with RMS detection on those sites is corrected
• FIXED: EQ low-shelf and high-shelf bands now render correctly on all sites in both Stereo and Mid/Side modes (previously forced to peaking on the affected paths)
• FIXED: Limiter filter mode (ITU / Kaiser) and look-ahead now take effect on all sites, with correct ceiling and release when the native fallback limiter is in use

Reliability
• FIXED: Capturing audio on DRM-protected sites (Spotify, Netflix) now retries briefly if the capture engine is not immediately ready and shows a clear error if it cannot start, instead of silently producing broken (processed-but-inaudible) capture
• NEW: Firefox 153+ — the popup now surfaces the "Access local files" affordance when viewing a local file:// page, so DSP can be enabled on locally-opened media

Performance
• IMPROVED: Compressor/limiter visualization history is now produced only for the module you are viewing, avoiding wasted work for hidden modules (metering accuracy is unchanged)
• IMPROVED: Loudness Range (LRA) is recomputed at ~1 Hz with reused scratch buffers instead of every frame
• IMPROVED: The LUFS histogram and stack stop repainting while their panel is collapsed, repainting once when expanded