Add configurable area asset budgets

.trellis/spec/pipeline/cli-and-stages.md

@@ -323,6 +323,7 @@ node scripts/check-area.js [--config config/areas/<area>.json]
 | Cesium GLB / metadata / preview 缺失或类型错误 | failure |
 | metadata JSON 损坏 | failure |
 | GLB size / nodes / images 超保守预算 | failure |
+| GLB render triangles / embedded image bytes 超保守预算 | failure |
 | expected stage manifest 缺失、损坏或 stale | failure |
 | stage manifest warning 内容包含 budget exceeded | failure |
 | QGIS preview 缺失 | warning，不阻断 |
@@ -481,6 +482,7 @@ File records use this shape:
 - `summary.glb.fileBytes`
 - `summary.glb.counts`
 - `summary.glb.extensionsUsed`
+- `summary.budget`：effective limits、usage 和 violations；warnings 来自同一个预算评估
 
 `cesium` 会调用 preview 生成函数，但 preview HTML / route / vehicle model 的 freshness
 所有权属于独立 `preview` manifest。否则单跑 `--stages preview` 会把 Cesium manifest
@@ -512,6 +514,7 @@ File records use this shape:
 - `summary.options`
 - `summary.compressionRatio`
 - `summary.savedBytes`
+- `summary.budget`：压缩 GLB 的 effective limits、usage 和 violations
 
 Manifest files are written atomically via `*.tmp` then `renameSync`.
 
@@ -524,7 +527,7 @@ Manifest files are written atomically via `*.tmp` then `renameSync`.
 | Manifest output 文件缺失 | 写入时抛错；诊断时报告 stale/missing |
 | Manifest JSON 无法解析 | 诊断报告 invalid warning |
 | Manifest 记录的 input / output sha/bytes 与当前文件不同 | 诊断报告 stale warning |
-| GLB size / nodes / images 超保守预算 | manifest `warnings[]` 记录，诊断继续独立报警 |
+| GLB size / nodes / images / render triangles / embedded image bytes 超保守预算 | manifest `warnings[]` 记录，诊断继续独立报警 |
 | `intermediates` 后留有旧 reimport manifest | 成功后删除旧 reimport manifest |
 | `reimport` 后留有旧 intermediates manifest | 成功后删除旧 intermediates manifest |