Split native Periscope (periscope/src) from inherited PinScope (periscope/dependency).

Keep validate.py and the finding engine as-is. AGPL LICENSE stays at the repo root.
Docker overlays dependency then src. Do not delete the inherited tree.

README.md

@@ -23,12 +23,21 @@ Default routing:
 | Per-IC datasheet review | `deepseek-flash` |
 | Auto-resolve / normalize | `deepseek-flash` |
 
-Override with `PROVIDER_*` and `MODEL_*_DEEPSEEK` in `backend/.env`. See `backend/.env.example`.
+Override with `PROVIDER_*` and `MODEL_*_DEEPSEEK` in `.env`. See `periscope/dependency/backend/.env.example`.
+
+## Layout
+
+- `periscope/src/` — native Periscope
+- `periscope/dependency/` — inherited PinScope (AGPL in-tree dependency; do not delete)
+- `LICENSE` — GNU AGPL v3 (visible at repo root)
+- `vendor/impedancefinder/` — third party (license UNKNOWN)
+
+See `periscope/README.md` and `periscope/src/docs/development/PINSCOPE_INDEPENDENCE_PLAN.md`.
 
 ## How it works
 
 <p align="center">
-  <img src="docs/how-it-works.svg" width="920" alt="Pipeline: the netlist and BOM are parsed into a design graph; datasheet PDFs are extracted into pin tables and specs; a per-IC review reads both and files findings cited to datasheet pages; the derating table and BOM roll-up are computed straight from the graph, no model involved.">
+  <img src="periscope/dependency/docs/how-it-works.svg" width="920" alt="Pipeline: the netlist and BOM are parsed into a design graph; datasheet PDFs are extracted into pin tables and specs; a per-IC review reads both and files findings cited to datasheet pages; the derating table and BOM roll-up are computed straight from the graph, no model involved.">
 </p>
 
 1. **Parse** the BOM (CSV/XLSX) and netlist (PADS-PCB `.asc` or EDIF 2.0.0 `.edn`) into a queryable bipartite graph of components and nets.
@@ -38,29 +47,29 @@ Override with `PROVIDER_*` and `MODEL_*_DEEPSEEK` in `backend/.env`. See `backen
 
 ## Try it on the bundled design
 
-`simple_project/` is a small MSPM0G3507 board with a CH340E USB-UART bridge and an SPX3819 LDO.
+`periscope/dependency/simple_project/` is a small MSPM0G3507 board with a CH340E USB-UART bridge and an SPX3819 LDO.
 
 You need Python 3.12+, Node 20+, and a [DeepSeek API key](https://platform.deepseek.com/):
 
 ```bash
 python3 -m venv .venv
 source .venv/bin/activate
-pip install -r backend/requirements.txt
-cp backend/.env.example backend/.env   # set DEEPSEEK_API_KEY
+pip install -r periscope/dependency/backend/requirements.txt
+cp periscope/dependency/backend/.env.example .env   # set DEEPSEEK_API_KEY
 
 python3 -m uvicorn backend.main:app --reload --host 127.0.0.1 --port 18741
 
 # in another terminal
-cd frontend && npm install
+cd periscope/dependency/frontend && npm install
 NEXT_PUBLIC_API_URL=http://127.0.0.1:18741 npm run dev -- --port 18742 --hostname 127.0.0.1
 ```
 
-Open the frontend URL, create a project, and feed it the netlist and BOM from `simple_project/`. Datasheets are fetched automatically (LCSC, TI, optional DigiKey); you can still drop in PDFs by hand. Fetched PDFs and extracted pin tables land in the **Library** (sidebar) and are reused on later projects. Everything runs locally against your own DeepSeek key; projects and the extraction library live in `data/`. Skills are local `skills/*/SKILL.md` — do not run `scripts/upload_skills.py`.
+Open the frontend URL, create a project, and feed it the netlist and BOM from `periscope/dependency/simple_project/`. Datasheets are fetched automatically (LCSC, TI, optional DigiKey); you can still drop in PDFs by hand. Fetched PDFs and extracted pin tables land in the **Library** (sidebar) and are reused on later projects. Everything runs locally against your own DeepSeek key; projects and the extraction library live in `data/`. Skills are local `periscope/dependency/skills/*/SKILL.md` — do not run `periscope/dependency/scripts/upload_skills.py`.
 
 ## Docker
 
 ```bash
-cp backend/.env.example .env   # set DEEPSEEK_API_KEY
+cp periscope/dependency/backend/.env.example .env   # set DEEPSEEK_API_KEY
 docker compose up --build
 ```