fix: refine earth hud structure and bun startup flow

- refactor the /earth HUD into class-first CSS layers with dedicated base, hud, and toolbar responsibilities
- clean up Earth markup and runtime DOM hooks so shared panel, toolbar, tooltip, and status classes stay consistent after dynamic updates
- keep HUD scaling configurable through extracted constants and remove leftover legacy panel/toolbar styling paths
- make planet.sh self-bootstrap Bun and uv by prepending local runtime bins to PATH and auto-installing missing tools in fresh environments
- document Bun as the frontend package manager of record and sync repository version metadata to 0.24.1

docs/version-history.md

@@ -16,7 +16,7 @@
 ## Current Version
 
 - `main` 当前主线历史推导到：`0.16.5`
-- `dev` 当前开发分支历史推导到：`0.23.3`
+- `dev` 当前开发分支历史推导到：`0.24.1`
 
 ## Timeline
 
@@ -72,6 +72,8 @@
 | `0.22.9` | bugfix | `dev` | `6bfcd053` | simplify `planet.sh` readiness messaging and only show retry counts on actual restart |
 | `0.23.0` | feature | `dev` | `pending` | add dedicated `aiprovider` service, multi-protocol AI adapters, uv-only Python runtime, and AI Provider restart controls |
 | `0.23.3` | bugfix | `dev` | `pending` | refine `planet.sh` zsh runtime compatibility, startup logging, and frontend readiness feedback |
+| `0.24.0` | feature | `dev` | `pending` | add AI Playground entry, provider diagnostics, and frontend layout guidance |
+| `0.24.1` | bugfix | `dev` | `pending` | refactor Earth HUD into class-first CSS layers, unify Bun-only frontend tooling guidance, and auto-bootstrap Bun/uv in `planet.sh` |
 
 ## Maintenance Commits Not Counted as Version Bumps