fix(meta): address PR #155 review — DEVOPS layout + common.py cleanup

Hoshe (QA): docs/DEVOPS.md Repository Layout still listed `decisions/` — corrected to
`governance/` (the DQR tree) and added a `.pql/` entry for the planning store.

Tyre (architecture, non-blocking): tooling/db/common.py docstring named deleted scripts
as consumers and `resolve_db_path`/`load_config`/`get_connection` were dead settledreach.db
code. Trimmed common.py to just `ensure_venv` (the only symbol any kept connector imports)
and rewrote the docstring to name the real consumers.

ruff clean; common.py parses; ensure_venv intact.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/DEVOPS.md

@@ -16,11 +16,12 @@ client/               Godot 4 client (GDScript, scenes, assets)
 server/               Rust/bevy_ecs simulation server
 tooling/              Build tools, scripts, asset pipelines
 tests/                Integration and end-to-end tests (cross-boundary)
-decisions/            Decision domain files (source of truth for all D/Q/R entries)
+governance/           Decision records — decisions/ questions/ rejected/ per domain (pql DQR tree)
+.pql/                 pql planning store — git-tracked changelog/ + config.yaml (pql.db is rebuildable)
 .config/              Configuration files (linters, formatters, CI)
 .cache/               Local caches for testing/linting (gitignored)
 docs/                 Design, architecture, briefings, workshops
-db/                   SQLite schema + seed data (connectors at tooling/db/)
+db/                   Schema + seed data (asset connectors at tooling/db/)
 ```
 
 Unit tests live inside their respective projects (`server/` uses `#[cfg(test)]` inline + `tests/` directory per D-030). The top-level `tests/` directory is for integration tests that cross the client-server boundary (IPC round-trip, serialization fixtures, divergence tests).