Replace paraphrased constitution with the 1224-line master.

Copy CODING_CONSTITUTION.md from the AgentStore docs/development path and split
the seven always-on .mdc files from that exact text.

.cursor/rules/20-python.mdc

@@ -2,17 +2,27 @@
 alwaysApply: true
 ---
 
-# Periscope Cursor Engineering Rules
+# 32. PYTHON IS THE DEFAULT LANGUAGE
 
-Mandatory for every Cursor agent working on Periscope. This section is copied from `docs/development/CODING_CONSTITUTION.md` and must not contradict that master.
+Python is the default implementation language for Periscope.
 
-## 2. Python
+Use Python for:
+
+* orchestration;
+* datasheet processing;
+* document parsing;
+* LLM integration;
+* requirement extraction;
+* evidence management;
+* project management;
+* CLI;
+* API integration;
+* reporting;
+* test orchestration;
+* external tool integration;
+* high-level analysis.
+
+Do not rewrite Python into Rust merely because Rust exists in the project.
+
+---
 
-- Python 3.12+, Pydantic 2.x, FastAPI on the backend.
-- Parsers and graph builders are pure functions without hidden I/O, except documented loaders (`build_graph` from paths).
-- All shared data structures are Pydantic models in `backend/periscopex/models.py` (or the native successor once rewritten).
-- Tests live under `tests/` against `simple_project/` as ground truth. Emmaforo behavior is a live spec, not a license to skip unit tests.
-- Extraction prompts live in `skills/` and run in-process. Bump `default_model_version` in `skills_manifest.json` when skill prompts change; never call Anthropic Console.
-- Use stdlib hashing (`hashlib.scrypt` in `local_users.hash_password`) for local passwords. Do not invent a homemade hash.
-- `repo_paths.py` locates taxonomy, skills, vendor, changelog. Do not hard-code `/app` without the Docker heuristic that also requires `vendor/`.
-- Format and lint with the repo’s existing tools. Do not drive-by reformat unrelated files.