Standardize data directory to ~/.codecora/trapfall/

[ajianaz]

Context

Part of Codecora ecosystem path standardization. All tools must use ~/.codecora/{project}/ as their data directory.

Target

~/.codecora/
├── trapfall/     ← this repo's data directory
│   └── config.toml
├── cora/
├── corin/
├── uteke/
├── rungu/
├── cache/
└── logs/

Scope

• Update Trapfall config/data path resolution to use ~/.codecora/trapfall/ as default
• Ensure config.toml reads/writes to ~/.codecora/trapfall/config.toml
• If custom path via env var or flag is provided, respect that (override)
• First-run: auto-create directory if not exists

Note

Trapfall may run in Docker/server — the config path on the host vs container should be considered (env var override is essential).

Reference

• Corin issue: Standardize Codecora path & settings UI redesign corin#64
• Cora issue: https://github.com/ajianaz/cora/issues/70