Release ShuffleMuse v0.1.1

[ColderCoder]

Summary

• add folder.jpg / folder.png cover fallbacks
• lazily display metadata TITLE and share its ffprobe with embedded-cover discovery
• fix playlist seam, intermediate-width player controls, and clickable bottom-bar paths
• document trusted proxy and dual LAN/Tunnel deployment
• bump release metadata and changelog to 0.1.1

Verification

• go mod verify
• go test -count=1 ./...
• go test -race -count=1 ./...
• go test -cover -count=1 ./internal/...
• go vet ./...
• bun install --frozen-lockfile
• bun run test:run (17 files, 64 tests)
• bun run build
• all three Compose config checks
• default and mainland Dockerfile release-candidate builds
• isolated Chromium QA at responsive boundary widths with real sample playback
• git diff --check