refactor(container): update styles and variables for container component

[gene9831]

• Translated footer text in demo to Chinese for localization.
• Moved CSS variable definitions for the container component to a new LESS file for better organization and maintainability.
• Updated icon button hover background to use the new container background variable.
• Cleaned up unused styles in the container component to streamline the codebase.

Summary by CodeRabbit

• New Features
  • Improved container theming with fullscreen-aware tokens and reliance on global theme variables.
  • Icon Button hover now follows theme colors for consistent visuals.
• Style
  • Replaced hard-coded background colors with theme variables; refined load order of component styles.
• Documentation
  • Demo footer text updated and redundant background styles removed.

[coderabbitai]

Walkthrough

Reworks container theming to emit global CSS tokens via a new Less mixin and maps those tokens to scoped CSS custom properties in the component; switches icon-button hover to a theme variable; adds container styles to component style imports; updates a docs demo's footer text and removes demo background styles.

Changes

Cohort / File(s)	Summary
Container component scoped vars packages/components/src/container/index.vue	Removes in-file Less variable generator and instead defines scoped CSS custom properties that map to global tokens; adds fullscreen fallbacks. Public API unchanged.
Container theme token generator packages/components/src/styles/components/container.less	Adds .tr-container-vars() mixin that emits --tr-container-* variables and -fullscreen variants under :root and [data-tr-theme]; mixin is invoked to produce tokens.
Styles import ordering packages/components/src/styles/components/index.css	Adds @import './container.less'; at top so container tokens/styles load before existing component styles (bubble, bubble-list, bubble-tool).
Icon button hover theming packages/components/src/icon-button/index.vue	Replaces hard-coded hover background #f5f5f5 with var(--tr-container-bg-hover) to follow theme tokens.
Docs demo content & styles docs/demos/container/basic.vue	Footer slot text changed to "这是 footer"; removed background-color rules from .content and .footer styles.
Variables comment only packages/components/src/styles/variables.css	Inserts a comment noting a naming conflict and planned unification for container background variable; no runtime value changes.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

I hop and nibble at the code,
New tokens sprout along the road.
Hover blends with themed delight,
Containers shine in softer light.
A tiny footer speaks in cheer—
I wiggle whiskers, changes near.

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📥 Commits

Reviewing files that changed from the base of the PR and between 69bf57a and 5a0a035.

📒 Files selected for processing (2)

• packages/components/src/styles/components/index.css (1 hunks)
• packages/components/src/styles/variables.css (1 hunks)

✅ Files skipped from review due to trivial changes (1)

• packages/components/src/styles/variables.css

🚧 Files skipped from review as they are similar to previous changes (1)

• packages/components/src/styles/components/index.css

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)

• GitHub Check: e2e-tests

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[coderabbitai]

Actionable comments posted: 3

🧹 Nitpick comments (2)

docs/demos/container/basic.vue (1)

13-13: Avoid hard-coded locale strings; use i18n token.
Use a translatable key so the demo works across locales.

Example (if vue-i18n is available):

-      <div class="footer">这是 footer</div>
+      <div class="footer">{{ $t('container.demo.footer') }}</div>

packages/components/src/styles/components/container.less (1)

11-16: Consider rem units for scalability.
Pixels are fine, but rem improves zoom/accessibility without retuning tokens.

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

💡 Knowledge Base configuration:

• MCP integration is disabled by default for public repositories
• Jira integration is disabled by default for public repositories
• Linear integration is disabled by default for public repositories

You can enable these sources in your CodeRabbit configuration.

📥 Commits

Reviewing files that changed from the base of the PR and between b13a1f0 and 69bf57a.

⛔ Files ignored due to path filters (1)

• packages/svgs/src/assets/new-session.svg is excluded by !**/*.svg

📒 Files selected for processing (5)

• docs/demos/container/basic.vue (1 hunks)
• packages/components/src/container/index.vue (0 hunks)
• packages/components/src/icon-button/index.vue (1 hunks)
• packages/components/src/styles/components/container.less (1 hunks)
• packages/components/src/styles/components/index.css (1 hunks)

💤 Files with no reviewable changes (1)

• packages/components/src/container/index.vue

🧰 Additional context used

🧠 Learnings (1)

📚 Learning: 2025-06-18T09:29:47.974Z

Learnt from: SonyLeo
PR: opentiny/tiny-robot#119
File: packages/components/src/attachments/index.less:213-213
Timestamp: 2025-06-18T09:29:47.974Z
Learning: 在 packages/components/src/attachments/index.less 中，.tr-file-card__close 的背景色使用了硬编码的 rgb(194, 194, 194)，但这个UI元素（关闭按钮）将会被直接替换为图标，所以不需要抽取为CSS变量。

Applied to files:

• packages/components/src/icon-button/index.vue

🪛 GitHub Actions: E2E Tests

packages/components/src/styles/components/index.css

[error] 1-1: Build failed during 'pnpm -F @opentiny/tiny-robot-* build' (vue-tsc && vite build). ENOENT: no such file or directory, open './bubble.less'. Unable to resolve @import './bubble.less' in packages/components/src/styles/components/index.css.

🔇 Additional comments (2)

packages/components/src/styles/components/container.less (1)

19-23: Confirm fullscreen typography.
title-font-size increases to 16px but title-line-height remains 22px. Verify intended rhythm; 24px is common for 16px.

packages/components/src/styles/components/index.css (1)

1-2: Check cascade/order impacts.
New imports load before prompt styles; verify no unintended precedence shifts for overlapping selectors.