chore: initial backup of Claude Code configuration

Includes: CLAUDE.md, settings.json, agents, commands, rules, skills,
hooks, contexts, evals, get-shit-done, plugin configs (installed list
and marketplace sources). Excludes credentials, runtime caches,
telemetry, session data, and plugin binary cache.

skills/wsl-python/SKILL.md

@@ -0,0 +1,50 @@
+---
+name: wsl-python
+description: WSL + Conda Python workflow patterns for Invoice Master projects
+---
+
+# WSL Python Workflow
+
+## Command Prefix (REQUIRED)
+
+All Python commands MUST use this prefix:
+
+```bash
+wsl bash -c "source ~/miniconda3/etc/profile.d/conda.sh && conda activate invoice-sm120 && <command>"
+```
+
+NEVER run Python commands directly in Windows PowerShell/CMD.
+
+## Common Commands
+
+### Run Tests
+```bash
+wsl bash -c "source ~/miniconda3/etc/profile.d/conda.sh && conda activate invoice-sm120 && cd /mnt/c/Users/yaoji/git/ColaCoder/invoice-master-poc-v2 && pytest tests/ -v"
+```
+
+### Run Specific Test File
+```bash
+wsl bash -c "source ~/miniconda3/etc/profile.d/conda.sh && conda activate invoice-sm120 && cd /mnt/c/Users/yaoji/git/ColaCoder/invoice-master-poc-v2 && pytest tests/<path> -v -s"
+```
+
+### Run Tests with Coverage
+```bash
+wsl bash -c "source ~/miniconda3/etc/profile.d/conda.sh && conda activate invoice-sm120 && cd /mnt/c/Users/yaoji/git/ColaCoder/invoice-master-poc-v2 && pytest --cov=packages --cov-report=term-missing tests/"
+```
+
+### Format Code
+```bash
+wsl bash -c "source ~/miniconda3/etc/profile.d/conda.sh && conda activate invoice-sm120 && cd /mnt/c/Users/yaoji/git/ColaCoder/invoice-master-poc-v2 && black packages/ && ruff check --fix packages/"
+```
+
+## Environment Details
+
+- Python: 3.10.19
+- Conda env: `invoice-sm120`
+- PDF DPI: 150 (not 300)
+- Pre-existing test failures: `tests/shared/storage/test_s3.py`, `test_azure.py` (missing boto3/azure modules - safe to ignore)
+
+## Path Mapping
+
+- Windows: `c:\Users\yaoji\git\ColaCoder\invoice-master-poc-v2\`
+- WSL: `/mnt/c/Users/yaoji/git/ColaCoder/invoice-master-poc-v2/`