[mytrashcan]

Updates the roadmap's Since v0.6.1 list with the work merged since #121:

• Node peers follow multivariant playlists and are rendition-aware (feat(peer): follow a multivariant playlist to one rendition #122, fix(peer): skip peers on another rendition #125).
• Hardening against abusive peers: fix(peer): drop HTTP uploads whose client stops reading #126, fix(tracker): limit broadcast and peer metadata size #129, fix(common): reject IPv4-mapped reserved peer addresses #130, fix(peer): refuse peer hosts that resolve to local addresses #131, fix(tracker): bound each peer's inventory by ID characters #138, fix(sdk,peer): jitter tracker reconnect backoff #124.
• Observability: feat(tracker): export auth failures and refused requests #136 and feat(helm): optional PrometheusRule with tracker alerts #137.
• The SDK's self-contained type declarations (fix(sdk): ship self-contained type declarations #127), a prerequisite for the npm release listed under Next.

[mytrashcan]

Self-review: docs only. Each new bullet maps to a merged PR (#122, #124–#131, #136–#138), and the npm prerequisite matches Next. CI is green.