docs: dashboard v0.5.5 release notes

Author: ualtinok

.alfonso/release-notes/dashboard-v0.5.5.md

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+# Dashboard v0.5.5
+
+## New platforms
+
+- **Linux ARM64** builds (AppImage, deb, rpm) — for ARM laptops, Asahi Linux, and Apple Silicon VMs. Previously only x64 was available, which fails under x86 emulation.
+- **Windows ARM64** builds (NSIS installer) — native builds for Windows on ARM devices.
+
+## Fixes
+
+- Config editor: the **Inject docs** toggle now correctly shows as enabled when the key is absent from your config, matching the actual default behavior (#134). Display-only — docs injection itself was always working.
+
+## Dependencies
+
+- Updated `tar` and `openssl` transitive dependencies.