fix(skills): 统一服务图标为纯白 (#65)

## Summary / 摘要

Normalize the Configure Compute, Using Services, and Register Services
source SVG icons to pure white.

将“配置算力”、“使用服务”和“注册服务”的源 SVG 图标统一为纯白。

## Version / 版本

- Market: `1.2.16` → `1.2.17`
- Each affected skill: `1.0.2` → `1.0.3`

## Validation / 验证

- `uv run scripts/i18n/validate-i18n.py`
- `uv run scripts/i18n/translate.py --check`
- Parsed all three SVGs and asserted their only hex color is `#FFFFFF`
- `git diff --check`

skills/using-services/SKILL.md

@@ -5,7 +5,7 @@ description: >-
   catalog. Use when the user asks the Agent to call an API, search for an
   existing service, or query a backend that was registered via the
   registering-services skill. 调用某个 API、查找已有服务、访问已注册的后端服务时使用。
-version: 1.0.2
+version: 1.0.3
 type: meta
 risk_level: low
 status: enabled
@@ -18,7 +18,7 @@ tags:
   - meta
 metadata:
   author: desirecore
-  updated_at: '2026-06-29'
+  updated_at: '2026-07-29'
   i18n:
     default_locale: en-US
     source_locale: zh-CN
@@ -42,7 +42,7 @@ metadata:
       source_hash: sha256:8a20b2835e5e54d1
 market:
   icon: >-
-    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#34C759" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="9" width="6" height="6" rx="1.5"/><rect x="15" y="3" width="6" height="6" rx="1.5"/><rect x="15" y="15" width="6" height="6" rx="1.5"/><path d="M9 11.5h3.5V6H15"/><path d="M9 12.5h3.5V18H15"/></svg>
+    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#FFFFFF" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="9" width="6" height="6" rx="1.5"/><rect x="15" y="3" width="6" height="6" rx="1.5"/><rect x="15" y="15" width="6" height="6" rx="1.5"/><path d="M9 11.5h3.5V6H15"/><path d="M9 12.5h3.5V18H15"/></svg>
   category: productivity
   maintainer:
     name: DesireCore Official