Remove generated artifacts and machine-specific paths

README.md

@@ -25,7 +25,7 @@ This first rebuild focuses on SolidWorks feature-process learning:
 ## Run Backend
 
 ```powershell
-cd D:\CSharpProjects\agent3\agent4
+cd <repository-root>
 .\run_backend.ps1
 ```
 
@@ -35,6 +35,14 @@ Backend URL:
 http://127.0.0.1:7200
 ```
 
+## Local Configuration
+
+Copy `.env.example` to `.env` and fill in only the paths available on the
+current machine. Keep `project_paths.json`, `appsettings.Local.json`, and
+`.env` local; they are intentionally ignored by Git. Large CAD/knowledge
+assets are also distributed separately and are not required for a source
+checkout.
+
 The default backend is now the C# API:
 
 ```text
@@ -77,14 +85,16 @@ Extracted records such as `*_modeling_plan.json`, `*_skill_flow.json`, and
 `*_skill_flow_validation.json` should be imported as standard-answer assets:
 
 ```powershell
-cd D:\CSharpProjects\agent3
-.\.venv\Scripts\python.exe agent4\scripts\import_standard_records.py --source "D:\Desktop\鎻愬彇璁板綍" --target "D:\CSharpProjects\agent3\agent4\data\standards"
+cd <repository-root>
+python -m venv .venv
+.\.venv\Scripts\python.exe -m pip install -r requirements.txt
+.\.venv\Scripts\python.exe scripts\import_standard_records.py --source "<extracted-records-directory>" --target "$(Get-Location)\data\standards"
 ```
 
 The importer copies records into categorized folders and writes:
 
 ```text
-agent4/data/standards/manifest.json
+data/standards/manifest.json
 ```
 
 The manifest is the main lookup index for teaching and testing. The raw JSON