chore: remove dead code in maps & legacy build

[lzxue]

清理死代码（零行为变更）

上一轮包合并 (12→8) 后的走查中发现的零引用文件，纯删除，无新增代码。

maps: 删除零引用 theme.ts ×3

map/theme.ts、mapbox/theme.ts、earth/theme.ts 与 utils/theme.ts 逐字节相同（diff 全空），且全仓无任何 import：

$ grep -rn "from './theme'" packages/maps/src
packages/maps/src/utils/BaseMapService.ts   # 唯一引用方
packages/maps/src/amap-next/map.ts          # 唯一引用方

maps: 删除 tdtmap 孤儿 logo.css

其余 6 个适配器的 map.ts 都有 import './logo.css'，唯独 tdtmap/map.ts 没有，但目录里留有 logo.css —— 孤儿文件。

legacy: 删除旧 rollup 构建脚本

迁移到 father 之前的构建脚本（rollup.config.js、rollup.config.worker.js、rollup-plugin-glsl.js、rollup-plugin-inline-worker.js、rollup-plugin-miniapp.js、bundle.ts），全仓无引用。legacy/dev-docs/、legacy/scripts/ 作为归档保留。

验证

• @antv/l7-maps esm/cjs + umd 全部构建通过
• es 产物仅保留被引用的 utils/theme.ts、amap-next/theme.ts
• tsc、eslint 通过

改动

10 files changed, 336 deletions(-)

[changeset-bot]

⚠️ No Changeset found

Latest commit: 7dc166b

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[gemini-code-assist]

Code Review

This pull request cleans up the codebase by removing several unused configuration files, Rollup plugins (such as glsl and inline-worker), build configurations, duplicate MapTheme definitions, and CSS styles. I have no feedback to provide as there are no review comments to evaluate.

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[lzxue]

CI 失败说明（非代码问题）

本 PR 的 lint / unit-test / size-test 三个 job 都在 install 阶段 ~10s 内失败：

[ERROR] Cannot use 'in' operator to search for 'integrity' in undefined

根因：.github/actions/prepare-install/action.yml 用浮动 version: 11，近期解析到新发布的 pnpm 11.13.0，它读当前 lockfile（由 pnpm@11.12.0 生成）时崩溃。与本 PR 的代码改动无关——本 PR 只动了 (见文件清单)，不碰 lockfile/package.json/workflow。

对照证据：较早的 PR（#2863 / #2856 / #2853 等）跑 lint (20.x) 全 pass 且耗时 2 分钟+；近期 11.13.0 发布后所有新 PR 才开始 10s 内崩在 install。

修复：已开 #2876 固定 pnpm 到 11.12.0。

注：#2876 因 ci.yml 的 paths: [packages/**, __tests__/**] filter 不触发 lint workflow，无法自验证；为让本 PR 的 CI 真正跑起来验证代码，已在本分支附带该 1 行 pin（见相关 commit）。