Implement nose coupling so run-arounds work, and stop coupling wiping the district

README.md

@@ -24,15 +24,24 @@ single browser.
 
 ```
 station-master/
+├── CHANGELOG.md        ← what changed and why, in detail, commit to commit
+├── TODO.md             ← open questions, provisional numbers, things to come back to
 ├── docs/
 │   ├── rules/          ← the ruleset, card reference, glossary, decision record
-│   └── architecture/   ← how it is built, and what the pieces are
+│   ├── architecture/   ← how it is built, and what the pieces are
+│   └── design/         ← board layout studies and rendering samples
+├── public/replays/     ← saved games published to the site's replay directory
+├── scripts/            ← build and deploy the static site
 ├── src/
-│   └── engine/         ← pure rules engine: no I/O, no clock, deterministic from a seed
+│   ├── engine/         ← pure rules engine: no I/O, no clock, deterministic from a seed
+│   ├── sim/            ← bot, harness, replay, board rendering
+│   └── web/            ← the playable site: splash, game, replay viewer
 └── test/
 ```
 
-Start with [`docs/design.md`](docs/design.md) — it indexes everything.
+Start with [`docs/design.md`](docs/design.md) — it indexes everything. Commit messages stay high
+level; [`CHANGELOG.md`](CHANGELOG.md) carries the reasoning and the measurements, and
+[`TODO.md`](TODO.md) is what we have decided not to forget.
 
 ## Development