Add project scale summary: capacity, building, land, electrical, solar, headcount

All derived figures reviewer-recomputed; BESS runtime corrected to the
chiller's electrical draw (2-3 h, not 1 h of thermal rating)

README.md

@@ -89,6 +89,9 @@ The detail lives in dedicated documents:
 - [Process flow](docs/process-flow.md): the whole chain from audio file to
   delivered record as a chart and stage table, with every check and the
   three artist approval gates (printable diagram alongside)
+- [Project scale](docs/scale.md): rough numbers for everything on one page:
+  output capacity, building area, land, electrical demand, solar and
+  storage, steam and fuel, headcount, and money cross-references
 
 ## Repository Layout
 
@@ -106,6 +109,7 @@ docs/
 ├── facility-security.md   Security, HVAC, fire and life safety, compliance
 ├── process-flow.md        Audio file to delivered record, with all checks
 ├── quality-automation.md  Stamper metrology and layered record QC
+├── scale.md               Rough project sizing on one page
 ├── sustainability.md      Energy, water, materials commitments
 ├── traceability.md        Process logging and per-order traceability
 └── worker-safety.md       Training, clean rooms, PPE