Performance improvements to background rendering on active connections.

Added support for concurrent WebTransport connections.

Worker wrapping now uses a Proxy-based recovery system that automatically detects CSP failures, transparently falls back to the original uninstrumented Worker, and remembers the origin for future visits.

ISO BMFF media detection & hex viewer annotations

• Proper ISO BMFF box parser replacing heuristic byte scanning
• Classifies payloads as CMAF, LOC, or fMP4 based on box types and brand codes
• Streams list shows variant + box count (e.g., CMAF(3)) with box names in tooltip
• Hex viewer renders inline boundary banners between objects with content description and offset indicator
• Object navigation (‹ 1/5 ›) in sticky bar for streams with 2+ objects
• Detection retry on subsequent chunks when first chunk arrives before draft detection

Control stream identification

• Bidirectional MoQT control stream correctly labeled "MoQT Control" instead of inheriting a track name
• Control stream preserved when clearing stream data (always-open, unrecoverable)

Track list: faster navigation
- New filters on Messages/Tracks: Active only, TX/RX, and Group by namespace (collapsible with status counts).
- Filters persist between tab switches and browser sessions.

Streams tab: usable at scale
- Added a search box to filter streams by track/namespace.
- Added a stats footer showing stream count + total TX/RX bytes, including filtered vs total when a filter is active.

Better control over captured data
- New recording toggle: pause stream data capture without losing control messages / track lifecycle.
- New clear button: wipes all captured stream data and frees memory/storage instantly.

Reliability fix: no more dropped control messages
- Fixed decoding so all control messages in a chunk are processed (not just the first).
- Added buffering so control messages split across chunks are reassembled correctly.

Performance improvements (large sessions)
- Streams list now uses virtual scrolling (renders only visible rows).
- Reduced repeated work across stream/track/session stats computation.

UI cleanup
- More compact track header layout.
- Better panel alignment.
- Standardized DevTools-style clear icons.

Added stack trace capture for outgoing control messages and unidirectional stream creation. A new "Stack" tab in the message detail panel shows the application call stack with clickable source links and async boundary grouping.