Merge main into the Phase 17 refactor

`main` changed the four files this branch split into packages, so all four
came back as modify/delete conflicts. Each change is ported to the module
that now holds the code, unchanged in behavior:

- `delete_action` moves to `routers/adventures/actions.py`. It reaches the
  turn lock as `turns.acquire_turn_lock` and `turns._active_turns`, which is
  the rule this branch set: the package root no longer re-exports the names a
  test rebinds.
- `EMIT_RULE` moves to `worldstate/parse.py`, and `_describe_stat` and
  `render_reference` to `worldstate/render.py`.
- The chip-wrap rules move to `styles/schema-editor.css`, and
  `StateChangeChips` to `pages/Play/reports.jsx`. `index.css` keeps this
  branch's import list.

`test_delete_state.py` needed four edits to run here. It drops the eight-line
database prologue, because `conftest.py` does that once now. It imports the
shared `ScriptedProvider` from `fakes.py` instead of carrying a copy. It
patches `adventures.turns.OpenAICompatibleProvider` and reaches the lock the
same way. And it no longer passes `index=0` when it builds the start action,
because migration 71 drops that column.

564 tests pass. `npm run lint` and `npm run build` are clean, and the CSS
bundle is 56.71 kB, which is the pre-merge size plus main's new rules.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

backend/app/worldstate/parse.py

@@ -23,8 +23,9 @@ EMIT_RULE = (
     "while a large change — or reaching a stat's minimum or maximum — is reserved for a "
     "genuinely pivotal, defining moment (a passing remark shifts a relationship a little; a "
     "lasting act of loyalty or betrayal shifts it a lot). Do not move a value across most of "
-    'its range in a single ordinary turn. Use the paths exactly as shown in the world state: '
-    '"player.<stat>", '
+    'its range in a single ordinary turn. Every stat is listed by its exact path in the '
+    'stat guide and again beside its live value — copy a path from there rather than '
+    'building one out of a name. The shapes are "player.<stat>", '
     '"world.<stat>", "npc.<id>.<stat>" (use the id in parentheses, e.g. npc.gwen.trust, '
     'not the display name); "flags.<name>": true or false to toggle an on/off state; and '
     '"milestones.<id>": true when an objective is completed. Some stats marked (free text) in '