chore: ignore python bytecode and document git workflow

Add __pycache__/*.pyc to .gitignore and remove the tracked bytecode
file. Add version control instructions to AGENTS.md for future sessions.

💘 Generated with Crush

Assisted-by: Crush:glm-5.2

.gitignore

@@ -9,6 +9,10 @@
 \#*\#
 .\#*
 
+# Python bytecode
+__pycache__/
+*.pyc
+
 # Temporary files
 *.tmp
 *.bak

AGENTS.md

@@ -119,6 +119,13 @@ use `deploy-check.sh` / `deploy-tuning.sh` wrapper patterns instead.
 2. `validate-fixes.sh pfv-tsys4` and `validate-fixes.sh pfv-tsys5`
 3. Update PROJECT.md with post-hardware numbers
 
+## Version control
+
+This project is tracked in a local git repo (`main` branch). Use **atomic
+commits with conventional commit messages** (e.g., `docs: add disk utilization
+to storage section`, `feat: add tsys9 validation support`). Never push to
+remote unless explicitly asked.
+
 ## Key scripts
 
 | Script | Purpose |